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Dou X, Chen Z, Liu Y, Li Y, Ye J, Lu L. Zebrafish mutants in egln1 display a hypoxic response and develop polycythemia. Life Sci 2024; 344:122564. [PMID: 38492922 DOI: 10.1016/j.lfs.2024.122564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/10/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
AIMS Prolyl hydroxylase domain 2 (PHD2), encoded by the Egln1 gene, serves as a pivotal regulator of the hypoxia-inducible factor (HIF) pathway and acts as a cellular oxygen sensor. Somatic inactivation of Phd2 in mice results in polycythemia and congestive heart failure. However, due to the embryonic lethality of Phd2 deficiency, its role in development remains elusive. Here, we investigated the function of two egln1 paralogous genes, egln1a and egln1b, in zebrafish. MAIN METHODS The egln1 null zebrafish were generated using the CRISPR/Cas9 system. Quantitative real-time PCR assays and Western blot analysis were employed to detect the effect of egln1 deficiency on the hypoxia signaling pathway. The hypoxia response of egln1 mutant zebrafish were assessed by analyzing heart rate, gill agitation frequency, and blood flow velocity. Subsequently, o-dianisidine staining and in situ hybridization were used to investigate the role of egln1 in zebrafish hematopoietic function. KEY FINDINGS Our data show that the loss of egln1a or egln1b individually has no visible effects on growth rate. However, the egln1a; egln1b double mutant displayed significant growth retardation and elevated mortality at around 2.5 months old. Both egln1a-null and egln1b-null zebrafish embryo exhibited enhanced tolerance to hypoxia, systemic hypoxic response that include hif pathway activation, increased cardiac activity, and polycythemia. SIGNIFICANCE Our research introduces zebrafish egln1 mutants as the first congenital embryonic viable systemic vertebrate animal model for PHD2, providing novel insights into hypoxic signaling and the progression of PHD2- associated disease.
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Affiliation(s)
- Xuehan Dou
- Laboratory for Marine Drugs and Bioproducts of Laoshan Laboratory, Qingdao, China; Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Zhongyuan Chen
- Laboratory for Marine Drugs and Bioproducts of Laoshan Laboratory, Qingdao, China; Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Yunzhang Liu
- Laboratory for Marine Drugs and Bioproducts of Laoshan Laboratory, Qingdao, China; Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Yun Li
- Laboratory for Marine Drugs and Bioproducts of Laoshan Laboratory, Qingdao, China; Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Junli Ye
- Department of Physiology and Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Ling Lu
- Laboratory for Marine Drugs and Bioproducts of Laoshan Laboratory, Qingdao, China; Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.
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Cai F, Yang X, Ma G, Wang P, Zhang M, Zhang N, Zhang R, Liang H, Nie Y, Dong C, Deng J. EGLN3 attenuates gastric cancer cell malignant characteristics by inhibiting JMJD8/NF-κB signalling activation independent of hydroxylase activity. Br J Cancer 2024; 130:597-612. [PMID: 38184692 PMCID: PMC10876699 DOI: 10.1038/s41416-023-02546-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 01/08/2024] Open
Abstract
BACKGROUND The expression of Egl-9 family hypoxia-inducible factor 3 (EGLN3) is notably decreased in various malignancies, including gastric cancer (GC). While the predominant focus has been on the hydroxylase activity of EGLN3 for its antitumour effects, recent findings have suggested nonenzymatic roles for EGLN3. METHODS This study assessed the clinical significance of EGLN3 expression in GC and explored the connection between EGLN3 DNA promoter methylation and transcriptional silencing. To investigate the effect of EGLN3 on GC cells, a gain-of-function strategy was adopted. RNA sequencing was conducted to identify the key effector molecules and signalling pathways associated with EGLN3. RESULTS EGLN3 expression was significantly reduced in GC tissues, correlating with poorer patient prognosis. EGLN3 hypermethylation disrupts transcriptional equilibrium, contributing to deeper tumour invasion and lymph node metastasis, thus exacerbating GC progression. Conversely, restoration of EGLN3 expression in GC cells substantially inhibited cell proliferation and metastasis. EGLN3 was also found to impede the malignant progression of GC cells by downregulating Jumonji C domain-containing protein 8-mediated activation of the NF-κB pathway, independent of its hydroxylase activity. CONCLUSIONS EGLN3 has the potential to hinder the spread of GC cells through a nonenzymatic mechanism, thereby shedding light on the complex nature of GC progression.
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Affiliation(s)
- Fenglin Cai
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Haihe Laboratory of Cell Ecosystem, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
- Department of Biochemistry and Molecular Biology, Tianjin Medical University, 300070, Tianjin, China
| | - Xiuding Yang
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Gang Ma
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Pengliang Wang
- Department of Gastrointestinal Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Mengmeng Zhang
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Nannan Zhang
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Rupeng Zhang
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Han Liang
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Cheng Dong
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Haihe Laboratory of Cell Ecosystem, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China.
- Department of Biochemistry and Molecular Biology, Tianjin Medical University, 300070, Tianjin, China.
| | - Jingyu Deng
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Digestive Cancer; Tianjin's Clinical Research Center for Cancer, Tianjin, 300060, China.
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Sluiter TJ, Tillie RJHA, de Jong A, de Bruijn JBG, Peters HAB, van de Leijgraaf R, Halawani R, Westmaas M, Starink LIW, Quax PHA, Sluimer JC, de Vries MR. Myeloid PHD2 Conditional Knockout Improves Intraplaque Angiogenesis and Vascular Remodeling in a Murine Model of Venous Bypass Grafting. J Am Heart Assoc 2024; 13:e033109. [PMID: 38258662 DOI: 10.1161/jaha.123.033109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/08/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Intraplaque angiogenesis occurs in response to atherosclerotic plaque hypoxia, which is driven mainly by highly metabolically active macrophages. Improving plaque oxygenation by increasing macrophage hypoxic signaling, thus stimulating intraplaque angiogenesis, could restore cellular function and neovessel maturation, and decrease plaque formation. Prolyl hydroxylases (PHDs) regulate cellular responses to hypoxia. We therefore aimed to elucidate the role of myeloid PHD2, the dominant PHD isoform, on intraplaque angiogenesis in a murine model for venous bypass grafting. METHODS AND RESULTS Myeloid PHD2 conditional knockout (PHD2cko) and PHD2 wild type mice on an Ldlr-/- background underwent vein graft surgery (n=11-15/group) by interpositioning donor caval veins into the carotid artery of genotype-matched mice. At postoperative day 28, vein grafts were harvested for morphometric and compositional analysis, and blood was collected for flow cytometry. Myeloid PHD2cko induced and improved intraplaque angiogenesis by improving neovessel maturation, which reduced intraplaque hemorrhage. Intima/media ratio was decreased in myeloid PHD2cko vein grafts. In addition, PHD2 deficiency prevented dissection of vein grafts and resulted in an increase in vessel wall collagen content. Moreover, the macrophage proinflammatory phenotype in the vein graft wall was attenuated in myeloid PHD2cko mice. In vitro cultured PHD2cko bone marrow-derived macrophages exhibited an increased proangiogenic phenotype compared with control. CONCLUSIONS Myeloid PHD2cko reduces vein graft disease and ameliorates vein graft lesion stability by improving intraplaque angiogenesis.
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Affiliation(s)
- Thijs J Sluiter
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine Leiden University Medical Centre Leiden The Netherlands
| | - Renée J H A Tillie
- Department of Pathology, CARIM School for Cardiovascular Sciences Maastricht University Medical Centre Maastricht The Netherlands
| | - Alwin de Jong
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine Leiden University Medical Centre Leiden The Netherlands
| | - Jenny B G de Bruijn
- Department of Pathology, CARIM School for Cardiovascular Sciences Maastricht University Medical Centre Maastricht The Netherlands
| | - Hendrika A B Peters
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine Leiden University Medical Centre Leiden The Netherlands
| | | | - Raghed Halawani
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
| | - Michelle Westmaas
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
| | - Lineke I W Starink
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
| | - Paul H A Quax
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine Leiden University Medical Centre Leiden The Netherlands
| | - Judith C Sluimer
- Department of Pathology, CARIM School for Cardiovascular Sciences Maastricht University Medical Centre Maastricht The Netherlands
- Centre for Cardiovascular Sciences University of Edinburgh Edinburgh United Kingdom
| | - Margreet R de Vries
- Department of Surgery Leiden University Medical Centre Leiden The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine Leiden University Medical Centre Leiden The Netherlands
- Department of Surgery Brigham and Women's Hospital, Harvard Medical School Boston MA
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Xu J, Ding X, Fu Y, Meng Q, Wang L, Zhang M, Xu C, Chen S, Aliper A, Ren F, Zhavoronkov A, Ding X. Discovery of Novel and Potent Prolyl Hydroxylase Domain-Containing Protein (PHD) Inhibitors for The Treatment of Anemia. J Med Chem 2024; 67:1393-1405. [PMID: 38189253 DOI: 10.1021/acs.jmedchem.3c01932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Stabilization of hypoxia-inducible factor (HIF) by inhibiting prolyl hydroxylase domain enzymes (PHDs) represents a breakthrough in treating anemia associated with chronic kidney disease. Here, we identified a novel scaffold for noncarboxylic PHD inhibitors by utilizing structure-based drug design (SBDD) and generative models. Iterative optimization of potency and solubility resulted in compound 15 which potently inhibits PHD thus stabilizing HIF-α in vitro. X-ray cocrystal structure confirmed the binding model was distinct from previously reported carboxylic acid PHD inhibitors by pushing away the R383 and Y303 residues resulting in a larger inner subpocket. Furthermore, compound 15 demonstrated a favorable in vitro/in vivo absorption, distribution, metabolism, and excretion (ADME) profile, low drug-drug interaction risk, and clean early safety profiling. Functionally, oral administration of compound 15 at 10 mg/kg every day (QD) mitigated anemia in a 5/6 nephrectomy rat disease model.
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Affiliation(s)
- Jianyu Xu
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Xiaoyu Ding
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Yanyun Fu
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Qingyuan Meng
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Ling Wang
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Man Zhang
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Chenxi Xu
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Shan Chen
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Alex Aliper
- Insilico Medicine AI Limited, Masdar City, Abu Dhabi 145748, United Arab Emirates
| | - Feng Ren
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
| | - Alex Zhavoronkov
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
- Insilico Medicine AI Limited, Masdar City, Abu Dhabi 145748, United Arab Emirates
| | - Xiao Ding
- Insilico Medicine Shanghai Ltd, Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong New District, Shanghai 201203, China
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Lee FS. Hypoxia Inducible Factor pathway proteins in high-altitude mammals. Trends Biochem Sci 2024; 49:79-92. [PMID: 38036336 PMCID: PMC10841901 DOI: 10.1016/j.tibs.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 12/02/2023]
Abstract
Humans and other mammals inhabit hypoxic high-altitude locales. In many of these species, genes under positive selection include ones in the Hypoxia Inducible Factor (HIF) pathway. One is PHD2 (EGLN1), which encodes for a key oxygen sensor. Another is HIF2A (EPAS1), which encodes for a PHD2-regulated transcription factor. Recent studies have provided insights into mechanisms for these high-altitude alleles. These studies have (i) shown that selection can occur on nonconserved, unstructured regions of proteins, (ii) revealed that high altitude-associated amino acid substitutions can have differential effects on protein-protein interactions, (iii) provided evidence for convergent evolution by different molecular mechanisms, and (iv) suggested that mutations in different genes can complement one another to produce a set of adaptive phenotypes.
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Affiliation(s)
- Frank S Lee
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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Xiang L, Wei H, Ye W, Wu S, Xie G. Prolyl hydroxylase 2 inhibits glycolytic activity in colorectal cancer via the NF‑κB signaling pathway. Int J Oncol 2024; 64:2. [PMID: 37975227 DOI: 10.3892/ijo.2023.5590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023] Open
Abstract
A variety of malignancies preferentially meet energy demands through the glycolytic pathway. Hypoxia‑induced cancer cell adaptations are essential for tumor development. However, in cancerous glycolysis, the functional importance and underlying molecular mechanism of prolyl hydroxylase domain protein 2 (PHD2) have not been fully elucidated. Gain‑ and loss‑of‑function assays were conducted to evaluate PHD2 functions in colon cancer cells. Glucose uptake, lactate production and intracellular adenosine‑5'‑triphosphate/adenosine diphosphate ratio were measured to determine glycolytic activities. Protein and gene expression levels were measured by western blot analysis and reverse transcription‑quantitative PCR, respectively. The human colon cancer xenograft model was used to confirm the role of PHD2 in tumor progression in vivo. Functionally, the data demonstrated that PHD2 knockdown leads to increased glycolysis, while PHD2 overexpression resulted in suppressed glycolysis in colorectal cancer cells. In addition, the glycolytic activity was enhanced without PHD2 and normalized after PHD2 reconstitution. PHD2 was shown to inhibit colorectal tumor growth, suppress cancer cell proliferation and improve tumor‑bearing mice survival in vivo. Mechanically, it was found that PHD2 inhibits the expression of critical glycolytic enzymes (glucose transporter 1, hexokinase 2 and phosphoinositide‑dependent protein kinase 1). In addition, PHD2 inhibited Ikkβ‑mediated NF‑κB activation in a hypoxia‑inducible factor‑1α‑independent manner. In conclusion, the data demonstrated that PHD2/Ikkβ/NF‑κB signaling has critical roles in regulating glycolysis and suggests that PHD2 potentially suppresses colorectal cancer.
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Affiliation(s)
- Lisha Xiang
- Division of Thoracic Tumor Multimodality Treatment and Department of Medical Oncology, Cancer Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hao Wei
- Division of Thoracic Tumor Multimodality Treatment and Department of Medical Oncology, Cancer Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Wentao Ye
- West China Medical School, West China Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Shuang Wu
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Ganfeng Xie
- Department of Oncology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
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Xie D, Liu M, Lin Y, Liu X, Yan H. Silencing of topical proline hydroxylase domain 2 promotes the healing of rat diabetic wounds by phosphorylating AMPK. PLoS One 2023; 18:e0294566. [PMID: 38039326 PMCID: PMC10691724 DOI: 10.1371/journal.pone.0294566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 11/04/2023] [Indexed: 12/03/2023] Open
Abstract
BACKGROUND For diabetic ulcers, the impaired response to hypoxia is a key feature associated with delayed healing. In the early phase of hypoxia, hypoxic signaling activates the AMPK system through direct phosphorylation of the PHD2 pathway, producing a significant endogenous hypoxic protective effect. METHODS Twenty Sprague-Dawley (SD) rats were randomly divided into two groups: treatment (sh-PHD2) and control (sh-Control). Using lentiviral encapsulation of PHD2-shRNA and transfection, the silencing efficiency of PHD2 expression was verified in rat dermal fibroblasts (RDF) and in rat aortic endothelial cells (RAECs). Changes in the ability of RDF and RAECs to proliferate, migrate, and in the rate of ATP production were observed and then tested after inhibition of AMPK phosphorylation using dorsomorphin. The lentiviral preparation was injected directly into the wounds of rats and wound healing was recorded periodically to calculate the healing rate. Wounded tissues were excised after 14 days and the efficiency of PHD2 silencing, as well as the expression of growth factors, was examined using molecular biology methods. Histological examination was performed to assess CD31 expression and therefore determine effects on angiogenesis. RESULTS Lentiviral-encapsulated PHD2-sh-RNA effectively suppressed PHD2 expression and improved the proliferation, migration, and ATP production rate of RDF and RAEC, which were restored to their previous levels after inhibition of AMPK. The rate of wound healing, vascular growth, and expression of growth factors were significantly improved in diabetic-model rats after local silencing of PHD2 expression. CONCLUSION Silencing of PHD2 promoted wound healing in diabetic-model SD rats by activating AMPK phosphorylation.
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Affiliation(s)
- Defu Xie
- Southwest Medical University, No. 1 Section 1, Xianglin Road, Luzhou City, Sichuan Province, 646000, China
- National Key Clinical Construction Specialty, Wound Repair & Regeneration Laboratory, Department of Plastic & Burn Surgery, Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou,Sichuan Province, 646000, China
| | - Mengchang Liu
- Southwest Medical University, No. 1 Section 1, Xianglin Road, Luzhou City, Sichuan Province, 646000, China
- National Key Clinical Construction Specialty, Wound Repair & Regeneration Laboratory, Department of Plastic & Burn Surgery, Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou,Sichuan Province, 646000, China
| | - Yingxi Lin
- Southwest Medical University, No. 1 Section 1, Xianglin Road, Luzhou City, Sichuan Province, 646000, China
- National Key Clinical Construction Specialty, Wound Repair & Regeneration Laboratory, Department of Plastic & Burn Surgery, Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou,Sichuan Province, 646000, China
| | - Xingke Liu
- Southwest Medical University, No. 1 Section 1, Xianglin Road, Luzhou City, Sichuan Province, 646000, China
- National Key Clinical Construction Specialty, Wound Repair & Regeneration Laboratory, Department of Plastic & Burn Surgery, Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou,Sichuan Province, 646000, China
| | - Hong Yan
- Southwest Medical University, No. 1 Section 1, Xianglin Road, Luzhou City, Sichuan Province, 646000, China
- National Key Clinical Construction Specialty, Wound Repair & Regeneration Laboratory, Department of Plastic & Burn Surgery, Affiliated Hospital of Southwest Medical University, No. 25 Taiping Street, Jiangyang District, Luzhou,Sichuan Province, 646000, China
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Liao Q, Deng H, Wang Z, Yu G, Zhu C, Jia S, Liu W, Bai Y, Sun X, Chen X, Xiao W, Liu X. Deletion of prolyl hydroxylase domain-containing enzyme 3 (phd3) in zebrafish facilitates hypoxia tolerance. J Biol Chem 2023; 299:105420. [PMID: 37923141 PMCID: PMC10724695 DOI: 10.1016/j.jbc.2023.105420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/16/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023] Open
Abstract
Prolyl hydroxylase domain (PHD)-containing enzyme 3 (PHD3) belongs to the Caenorhabditis elegans gene egl-9 family of prolyl hydroxylases. PHD3 catalyzes proline hydroxylation of hypoxia-inducible factor α (HIF-α) and promotes HIF-α proteasomal degradation through coordination with the pVHL complex under normoxic conditions. However, the relationship between PHD3 and the hypoxic response is not well understood. In this study, we used quantitative real-time PCR assay and O-dianisidine staining to characterize the hypoxic response in zebrafish deficient in phd3. We found that the hypoxia-responsive genes are upregulated and the number of erythrocytes was increased in phd3-null zebrafish compared with their wild-type siblings. On the other hand, we show overexpression of phd3 suppresses HIF-transcriptional activation. In addition, we demonstrate phd3 promotes polyubiquitination of zebrafish hif-1/2α proteins, leading to their proteasomal degradation. Finally, we found that compared with wild-type zebrafish, phd3-null zebrafish are more resistant to hypoxia treatment. Therefore, we conclude phd3 has a role in hypoxia tolerance. These results highlight the importance of modulation of the hypoxia signaling pathway by phd3 in hypoxia adaptation.
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Affiliation(s)
- Qian Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Hongyan Deng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; College of Life Science, Wuhan University, Wuhan, P. R.China
| | - Zixuan Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China
| | - Chunchun Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China
| | - Shuke Jia
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Wen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Yao Bai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Xueyi Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Xiaoyun Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, P. R.China.
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, P. R.China.
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Figg WD, Fiorini G, Chowdhury R, Nakashima Y, Tumber A, McDonough MA, Schofield CJ. Structural basis for binding of the renal carcinoma target hypoxia-inducible factor 2α to prolyl hydroxylase domain 2. Proteins 2023; 91:1510-1524. [PMID: 37449559 PMCID: PMC10952196 DOI: 10.1002/prot.26541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/08/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023]
Abstract
The hypoxia-inducible factor (HIF) prolyl-hydroxylases (human PHD1-3) catalyze prolyl hydroxylation in oxygen-dependent degradation (ODD) domains of HIFα isoforms, modifications that signal for HIFα proteasomal degradation in an oxygen-dependent manner. PHD inhibitors are used for treatment of anemia in kidney disease. Increased erythropoietin (EPO) in patients with familial/idiopathic erythrocytosis and pulmonary hypertension is associated with mutations in EGLN1 (PHD2) and EPAS1 (HIF2α); a drug inhibiting HIF2α activity is used for clear cell renal cell carcinoma (ccRCC) treatment. We report crystal structures of PHD2 complexed with the C-terminal HIF2α-ODD in the presence of its 2-oxoglutarate cosubstrate or N-oxalylglycine inhibitor. Combined with the reported PHD2.HIFα-ODD structures and biochemical studies, the results inform on the different PHD.HIFα-ODD binding modes and the potential effects of clinically observed mutations in HIFα and PHD2 genes. They may help enable new therapeutic avenues, including PHD isoform-selective inhibitors and sequestration of HIF2α by the PHDs for ccRCC treatment.
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Affiliation(s)
- William D. Figg
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
| | - Giorgia Fiorini
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
| | - Rasheduzzaman Chowdhury
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
| | - Yu Nakashima
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
- Institute of Natural Medicine, University of ToyamaToyamaJapan
| | - Anthony Tumber
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
| | - Michael A. McDonough
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
| | - Christopher J. Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos OxfordInstitute for Antimicrobial Research, University of OxfordOxfordUK
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10
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Delamare M, Le Roy A, Pacault M, Schmitt L, Garrec C, Maaziz N, Myllykoski M, Rimbert A, Karaghiannis V, Aral B, Catherwood M, Airaud F, Mansour-Hendili L, Hoogewijs D, Peroni E, Idriss S, Lesieur V, Caillaud A, Si-Tayeb K, Chariau C, Gaignerie A, Rab M, Haferlach T, Meggendorfer M, Bézieau S, Benetti A, Casadevall N, Hirsch P, Rose C, Wemeau M, Galacteros F, Cassinat B, Bellosillo B, Bento C, Van Wijk R, Petrides PE, Randi ML, McMullin MF, Koivunen P, Girodon F, Gardie B. Characterization of genetic variants in the EGLN1/PHD2 gene identified in a European collection of patients with erythrocytosis. Haematologica 2023; 108:3068-3085. [PMID: 37317877 PMCID: PMC10620589 DOI: 10.3324/haematol.2023.282913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023] Open
Abstract
Hereditary erythrocytosis is a rare hematologic disorder characterized by an excess of red blood cell production. Here we describe a European collaborative study involving a collection of 2,160 patients with erythrocytosis sequenced in ten different laboratories. We focused our study on the EGLN1 gene and identified 39 germline missense variants including one gene deletion in 47 probands. EGLN1 encodes the PHD2 prolyl 4-hydroxylase, a major inhibitor of hypoxia-inducible factor. We performed a comprehensive study to evaluate the causal role of the identified PHD2 variants: (i) in silico studies of localization, conservation, and deleterious effects; (ii) analysis of hematologic parameters of carriers identified in the UK Biobank; (iii) functional studies of the protein activity and stability; and (iv) a comprehensive study of PHD2 splicing. Altogether, these studies allowed the classification of 16 pathogenic or likely pathogenic mutants in a total of 48 patients and relatives. The in silico studies extended to the variants described in the literature showed that a minority of PHD2 variants can be classified as pathogenic (36/96), without any differences from the variants of unknown significance regarding the severity of the developed disease (hematologic parameters and complications). Here, we demonstrated the great value of federating laboratories working on such rare disorders in order to implement the criteria required for genetic classification, a strategy that should be extended to all hereditary hematologic diseases.
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Affiliation(s)
- Marine Delamare
- Ecole Pratique des Hautes Etudes, EPHE, Université PSL, France; Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Amandine Le Roy
- Ecole Pratique des Hautes Etudes, EPHE, Université PSL, France; Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Mathilde Pacault
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France; Service de Génétique Médicale, CHU de Nantes, Nantes
| | - Loïc Schmitt
- Ecole Pratique des Hautes Etudes, EPHE, Université PSL, France; Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Céline Garrec
- Service de Génétique Médicale, CHU de Nantes, Nantes
| | - Nada Maaziz
- Service d'Hématologie Biologique, Pôle Biologie, CHU de Dijon, Dijon
| | - Matti Myllykoski
- Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, 90014 Oulu, Finland. 90014 Oulu
| | - Antoine Rimbert
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Valéna Karaghiannis
- Ecole Pratique des Hautes Etudes, EPHE, Université PSL, France; Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Bernard Aral
- Service d'Hématologie Biologique, Pôle Biologie, CHU de Dijon, Dijon
| | | | | | - Lamisse Mansour-Hendili
- Département de Biochimie-Biologie Moléculaire, Pharmacologie, Génétique Médicale AP-HP, Hôpitaux Universitaires Henri Mondor, Créteil, France; Université Paris-Est Créteil, IMRB Equipe Pirenne, Laboratoire d'excellence LABEX GRex, Créteil
| | - David Hoogewijs
- Section of Medicine, Department of Endocrinology, Metabolism and Cardiovascular System, University of Fribourg, CH-1700 Fribourg, Switzerland; National Center of Competence in Research "Kidney.CH"
| | - Edoardo Peroni
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology, IOV-IRCCS, 35128 Padova, Italy; Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro
| | - Salam Idriss
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Valentine Lesieur
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Amandine Caillaud
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Karim Si-Tayeb
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes
| | - Caroline Chariau
- Nantes Université, CHU Nantes, CNRS, Inserm, BioCore, FR-44000, Nantes
| | - Anne Gaignerie
- Nantes Université, CHU Nantes, CNRS, Inserm, BioCore, FR-44000, Nantes
| | - Minke Rab
- Central Diagnostic Laboratory - Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands; Department of Hematology, University Medical Center Utrecht, Utrecht University, Utrecht
| | | | | | - Stéphane Bézieau
- Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France; Service de Génétique Médicale, CHU de Nantes, Nantes
| | - Andrea Benetti
- Department of Medicine-DIMED, University of Padua, Via Giustiniani 2, 35128, Padua
| | - Nicole Casadevall
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, CRSA, AP-HP, SIRIC CURAMUS, Hôpital Saint-Antoine, Service d'Hématologie Biologique, 75012, Paris
| | - Pierre Hirsch
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, CRSA, AP-HP, SIRIC CURAMUS, Hôpital Saint-Antoine, Service d'Hématologie Biologique, 75012, Paris
| | - Christian Rose
- Service d'onco-hématologie, Saint-Vincent de Paul Hospital, Boulevard de Belfort, Université Catholique de Lille, Univ. Nord de France, F-59000 Lille
| | - Mathieu Wemeau
- Hematology Department, Claude Huriez Hospital, Lille Hospital, 59000 Lille
| | - Frédéric Galacteros
- Département de Biochimie-Biologie Moléculaire, Pharmacologie, Génétique Médicale AP-HP, Hôpitaux Universitaires Henri Mondor, Créteil, France; Red Cell Disease Referral Center-UMGGR, AP-HP, Hôpitaux Universitaires Henri Mondor, Créteil
| | - Bruno Cassinat
- Université Paris Cité, APHP, Hôpital Saint-Louis, Laboratoire de Biologie Cellulaire, Paris
| | | | - Celeste Bento
- Hematology Department, Centro Hospitalar e Universitário de Coimbra; CIAS, University of Coimbra
| | - Richard Van Wijk
- Central Diagnostic Laboratory - Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands; Department of Hematology, University Medical Center Utrecht, Utrecht University, Utrecht
| | - Petro E Petrides
- Hematology Oncology Center and Ludwig-Maximilians-University Munich Medical School, Munich
| | - Maria Luigia Randi
- Department of Medicine-DIMED, University of Padua, Via Giustiniani 2, 35128, Padua
| | - Mary Frances McMullin
- Belfast Health and Social Care Trust, Belfast N.Ireland; Queen's University, Belfast, N. Ireland
| | - Peppi Koivunen
- Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, 90014 Oulu, Finland. 90014 Oulu
| | - François Girodon
- Service d'Hématologie Biologique, Pôle Biologie, CHU de Dijon, Dijon, France; Inserm U1231, Université de Bourgogne, Dijon, France; Laboratoire d'Excellence GR-Ex
| | - Betty Gardie
- Ecole Pratique des Hautes Etudes, EPHE, Université PSL, France; Université de Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France; Laboratoire d'Excellence GR-Ex
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11
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Jiang W, Zhang M, Gao C, Yan C, Gao R, He Z, Wei X, Xiong J, Ruan Z, Yang Q, Li J, Li Q, Zhong Z, Zhang M, Yuan Q, Hu H, Wang S, Hu M, Cai C, Wu G, Jiang C, Zhang Y, Zhang C, Zhang J. A mitochondrial EglN1-AMPKα axis drives breast cancer progression by enhancing metabolic adaptation to hypoxic stress. EMBO J 2023; 42:e113743. [PMID: 37661833 PMCID: PMC10577635 DOI: 10.15252/embj.2023113743] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 09/05/2023] Open
Abstract
Mitochondria play essential roles in cancer cell adaptation to hypoxia, but the underlying mechanisms remain elusive. Through mitochondrial proteomic profiling, we here find that the prolyl hydroxylase EglN1 (PHD2) accumulates on mitochondria under hypoxia. EglN1 substrate-binding region in the β2β3 loop is responsible for its mitochondrial translocation and contributes to breast tumor growth. Furthermore, we identify AMP-activated protein kinase alpha (AMPKα) as an EglN1 substrate on mitochondria. The EglN1-AMPKα interaction is essential for their mutual mitochondrial translocation. After EglN1 prolyl-hydroxylates AMPKα under normoxia, they rapidly dissociate following prolyl-hydroxylation, leading to their immediate release from mitochondria. In contrast, hypoxia results in constant EglN1-AMPKα interaction and their accumulation on mitochondria, leading to the formation of a Ca2+ /calmodulin-dependent protein kinase 2 (CaMKK2)-EglN1-AMPKα complex to activate AMPKα phosphorylation, ensuring metabolic homeostasis and breast tumor growth. Our findings identify EglN1 as an oxygen-sensitive metabolic checkpoint signaling hypoxic stress to mitochondria through its β2β3 loop region, suggesting a potential therapeutic target for breast cancer.
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Affiliation(s)
- Weiwei Jiang
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Mengyao Zhang
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Chuan Gao
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Chaojun Yan
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Ronghui Gao
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Ziwei He
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Xin Wei
- Life Sciences InstituteZhejiang UniversityHangzhouChina
| | - Jingjing Xiong
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Zilun Ruan
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Qian Yang
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Jinpeng Li
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Qifang Li
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Ziyi Zhong
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Mengna Zhang
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Qianqian Yuan
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Hankun Hu
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, School of Pharmaceutical SciencesWuhan UniversityWuhanChina
| | - Shuang Wang
- Mabnus Biological Technology IncorporationWuhanChina
| | - Ming‐Ming Hu
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Cheguo Cai
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Gao‐Song Wu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
| | - Chao Jiang
- Life Sciences InstituteZhejiang UniversityHangzhouChina
| | - Ya‐Lin Zhang
- State Key Laboratory for Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life SciencesXiamen UniversityFujianChina
| | - Chen‐Song Zhang
- State Key Laboratory for Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life SciencesXiamen UniversityFujianChina
| | - Jing Zhang
- Department of Thyroid and Breast Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhanChina
- Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research CenterZhongnan Hospital of Wuhan UniversityWuhanChina
- Wuhan Research Center for Infectious Diseases and CancerChinese Academy of Medical SciencesWuhanChina
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12
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Tian J, Bao X, Yang F, Tang X, Jiang Q, Li Y, Yao K, Yin Y. Elevation of Intracellular Alpha-Ketoglutarate Levels Inhibits Osteoclastogenesis by Suppressing the NF-κB Signaling Pathway in a PHD1-Dependent Manner. Nutrients 2023; 15:nu15030701. [PMID: 36771407 PMCID: PMC9921543 DOI: 10.3390/nu15030701] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023] Open
Abstract
Age-related osteoporosis, a high-prevalence disease in the aged population, is generally attributed to the excessive activity of osteoclasts. Most approved drugs treat osteoporosis by inhibition of osteoclasts. Although in vivo studies have shown that alpha-ketoglutarate (AKG), an intermediate in the TCA cycle, can ameliorate age-related osteoporosis, the effects of AKG on osteoclastogenesis and the underlying mechanism of its action have not been studied yet. Here, we showed that the elevation of intracellular AKG levels by supplementing dimethyl AKG (DM-AKG, a cell-permeable derivative of AKG) inhibits the receptor activator of NF-κB ligand (RANKL)-induced osteoclasts differentiation from primary bone marrow-derived macrophages (BMMs) and RAW264.7 cells in vitro. We further found that DM-AKG treatment suppresses NF-κB signaling and oxidative phosphorylation (OXPHOS) during RANKL-induced osteoclastogenesis in RAW264.7 cells. Interestingly, dimethyl oxalylglycine (DMOG), an AKG competitive inhibitor of AKG-dependent prolyl hydroxylases (PHDs), antagonizes the suppression of the RANKL-activated NF-κB signaling pathway caused by DM-AKG treatment. Furthermore, blocked PHD1 expression (also known as EglN2), instead of PHD2 or PHD3, was confirmed to reverse the DM-AKG treatment-induced suppression of the RANKL-activated NF-κB signaling pathway. Accordingly, blocked PHD1 expression antagonized the inhibitory effects of DM-AKG on osteoclastogenesis. Together, our finding suggests that the elevation of intracellular AKG levels inhibits osteoclastogenesis by suppressing RANKL-activated NF-κB signaling in a PHD1-dependent manner, which may provide a novel nutritional strategy for osteoporosis treatment.
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Affiliation(s)
- Junquan Tian
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- University of Chinese Academy of Sciences, Beijing 100008, China
| | - Xuetai Bao
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- University of Chinese Academy of Sciences, Beijing 100008, China
| | - Fan Yang
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- University of Chinese Academy of Sciences, Beijing 100008, China
| | - Xiongzhuo Tang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410000, China
| | - Qian Jiang
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410000, China
- Correspondence: (Q.J.); (K.Y.)
| | - Yuying Li
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
| | - Kang Yao
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- University of Chinese Academy of Sciences, Beijing 100008, China
- Correspondence: (Q.J.); (K.Y.)
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- University of Chinese Academy of Sciences, Beijing 100008, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410000, China
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13
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Yang J, Xing J, Zhu X, Xie X, Wang L, Zhang X. Effects of hypoxia-inducible factor-prolyl hydroxylase inhibitors vs. erythropoiesis-stimulating agents on iron metabolism in non-dialysis-dependent anemic patients with CKD: A network meta-analysis. Front Endocrinol (Lausanne) 2023; 14:1131516. [PMID: 37008953 PMCID: PMC10060950 DOI: 10.3389/fendo.2023.1131516] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 03/01/2023] [Indexed: 03/18/2023] Open
Abstract
OBJECTIVE To compare the effects of five hypoxia-inducible factor-prolyl hydroxylase domain inhibitors (HIF-PHIs), two erythropoiesis-stimulating agents (ESAs), and placebo on iron metabolism in renal anemia patients with non-dialysis-dependent chronic kidney disease (NDD-CKD). METHOD Five electronic databases were searched for studies. Randomized controlled clinical trials comparing HIF-PHIs, ESAs, and placebo in NDD-CKD patients were selected. The statistical program used for network meta-analysis was Stata/SE 15.1. The main outcomes were the change in hepcidin and hemoglobin (Hb) levels. The merits of intervention measures were predicted by the surface under the cumulative ranking curve method. RESULTS Of 1,589 original titles screened, data were extracted from 15 trials (3,228 participants). All HIF-PHIs and ESAs showed greater Hb level-raising ability than placebo. Among them, desidustat demonstrated the highest probability of increasing Hb (95.6%). Hepcidin [mean deviation (MD) = -43.42, 95%CI: -47.08 to -39.76], ferritin (MD= -48.56, 95%CI: -55.21 to -41.96), and transferrin saturation (MD = -4.73, 95%CI: -5.52 to -3.94) were decreased, while transferrin (MD = 0.09, 95%CI: 0.01 to 0.18) and total iron-binding capacity (MD = 6.34, 95%CI: 5.71 to 6.96) was increased in HIF-PHIs versus those in ESAs. In addition, this study observed heterogeneity in the ability of HIF-PHIs to decrease hepcidin. Compared with darbepoetin, only daprodustat (MD = -49.09, 95% CI: -98.13 to -0.05) could significantly reduce hepcidin levels. Meanwhile, daprodustat also showed the highest hepcidin-lowering efficacy (84.0%), while placebo was the lowest (8.2%). CONCLUSION For NDD-CKD patients, HIF-PHIs could ameliorate functional iron deficiency by promoting iron transport and utilization, which may be achieved by decreasing hepcidin levels. Interestingly, HIF-PHIs had heterogeneous effects on iron metabolism. SYSTEMATIC REVIEW REGISTRATION https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=242777, Identifier CRD42021242777.
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Affiliation(s)
- Junlan Yang
- Department of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Jie Xing
- Department of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Xiaodong Zhu
- Department of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Xiaotong Xie
- Department of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Lina Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Southeast University/Hospital, Nanjing, Jiangsu, China
| | - Xiaoliang Zhang
- Department of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
- *Correspondence: Xiaoliang Zhang,
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14
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Liu B, Peng Y, Yi D, Machireddy N, Dong D, Ramirez K, Dai J, Vanderpool R, Zhu MM, Dai Z, Zhao YY. Endothelial PHD2 deficiency induces nitrative stress via suppression of caveolin-1 in pulmonary hypertension. Eur Respir J 2022; 60:2102643. [PMID: 35798360 PMCID: PMC9791795 DOI: 10.1183/13993003.02643-2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/24/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Nitrative stress is a characteristic feature of the pathology of human pulmonary arterial hypertension. However, the role of nitrative stress in the pathogenesis of obliterative vascular remodelling and severe pulmonary arterial hypertension remains largely unclear. METHOD Our recently identified novel mouse model (Egln1Tie2Cre, Egln1 encoding prolyl hydroxylase 2 (PHD2)) has obliterative vascular remodelling and right heart failure, making it an excellent model to use in this study to examine the role of nitrative stress in obliterative vascular remodelling. RESULTS Nitrative stress was markedly elevated whereas endothelial caveolin-1 (Cav1) expression was suppressed in the lungs of Egln1Tie2Cre mice. Treatment with a superoxide dismutase mimetic, manganese (III) tetrakis (1-methyl-4-pyridyl) porphyrin pentachloride or endothelial Nos3 knockdown using endothelial cell-targeted nanoparticle delivery of CRISPR-Cas9/guide RNA plasmid DNA inhibited obliterative pulmonary vascular remodelling and attenuated severe pulmonary hypertension in Egln1Tie2Cre mice. Genetic restoration of Cav1 expression in Egln1Tie2Cre mice normalised nitrative stress, reduced pulmonary hypertension and improved right heart function. CONCLUSION These data suggest that suppression of Cav1 expression secondary to PHD2 deficiency augments nitrative stress through endothelial nitric oxide synthase activation, which contributes to obliterative vascular remodelling and severe pulmonary hypertension. Thus, a reactive oxygen/nitrogen species scavenger might have therapeutic potential for the inhibition of obliterative vascular remodelling and severe pulmonary arterial hypertension.
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Affiliation(s)
- Bin Liu
- Division of Pulmonary, Critical Care and Sleep, Dept of Internal Medicine, University of Arizona, Phoenix, AZ, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
| | - Yi Peng
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Dan Yi
- Division of Pulmonary, Critical Care and Sleep, Dept of Internal Medicine, University of Arizona, Phoenix, AZ, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
| | - Narsa Machireddy
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Daoyin Dong
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Karina Ramirez
- Division of Pulmonary, Critical Care and Sleep, Dept of Internal Medicine, University of Arizona, Phoenix, AZ, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
| | - Jingbo Dai
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rebecca Vanderpool
- College of Medicine Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, USA
| | - Maggie M Zhu
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Zhiyu Dai
- Division of Pulmonary, Critical Care and Sleep, Dept of Internal Medicine, University of Arizona, Phoenix, AZ, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
- Zhiyu Dai and You-Yang Zhao contributed equally to this article as lead authors and supervised the work
| | - You-Yang Zhao
- Program for Lung and Vascular Biology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Section for Injury Repair and Regeneration Research, Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Division of Critical Care, Dept of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Dept of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Dept of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Feinberg Cardiovascular and Renal Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Zhiyu Dai and You-Yang Zhao contributed equally to this article as lead authors and supervised the work
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15
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Song D, Peng K, Palmer BE, Lee FS. The ribosomal chaperone NACA recruits PHD2 to cotranslationally modify HIF-α. EMBO J 2022; 41:e112059. [PMID: 36219563 PMCID: PMC9670199 DOI: 10.15252/embj.2022112059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/23/2022] [Accepted: 09/23/2022] [Indexed: 01/13/2023] Open
Abstract
Prolyl hydroxylase domain protein 2 (PHD2)-catalyzed modification of hypoxia-inducible factor (HIF)-α is a key event in oxygen sensing. We previously showed that the zinc finger of PHD2 binds to a Pro-Xaa-Leu-Glu (PXLE) motif. Here, we show that the zinc finger binds to this motif in the ribosomal chaperone nascent polypeptide complex-α (NACA). This recruits PHD2 to the translation machinery to cotranslationally modify HIF-α. Importantly, this cotranslational modification is enhanced by a translational pause sequence in HIF-α. Mice with a knock-in Naca gene mutation that abolishes the PXLE motif display erythrocytosis, a reflection of HIF pathway dysregulation. In addition, human erythrocytosis-associated mutations in the zinc finger of PHD2 ablate interaction with NACA. Tibetans, who have adapted to the hypoxia of high altitude, harbor a PHD2 variant that we previously showed displays a defect in zinc finger binding to p23, a PXLE-containing HSP90 cochaperone. We show here that Tibetan PHD2 maintains interaction with NACA, thereby showing differential interactions with PXLE-containing proteins and providing an explanation for why Tibetans are not predisposed to erythrocytosis.
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Affiliation(s)
- Daisheng Song
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Kai Peng
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Present address:
Chime BiologicsWuhanChina
| | - Bradleigh E Palmer
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Present address:
Department of BiologyJohns Hopkins UniversityBaltimoreMDUSA
| | - Frank S Lee
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
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16
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Wang C, Zhang W, Xu W, Liu Z, Huang K. AMP-activated protein kinase α1 phosphorylates PHD2 to maintain systemic iron homeostasis. Clin Transl Med 2022; 12:e854. [PMID: 35538889 PMCID: PMC9091988 DOI: 10.1002/ctm2.854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Iron is essential for all mammalian life, and either a deficiency or excess of iron can cause diseases. AMP-activated protein kinase (AMPK) is a critical regulator of metabolic homeostasis; however, it has not been established whether AMPK regulates iron metabolism. METHODS Iron, hepcidin and ferroportin levels were examined in mice with global and hepatocyte-specific knockout of AMPKα1 and AMPKα2. Primary AMPKα1 or AMPKα2 deleted hepatocytes were isolated and cultured in hypoxia condition to explore PHD2, HIF and hydroxylated HIF1α levels. We performed immunoprecipitation, in vitro AMPK kinase assay and site-direct mutant assay to detect phosphorylation sites of PHD2. We also obtained liver tissues from patients with anaemia of chronic disease undergoing surgery, AMPKα1 and hydroxylated HIF1α levels were measured by immunohistochemical analysis. RESULTS We found that mice with global deficiency of AMPKα1, but not AMPKα2, exhibited hypoferraemia as well as iron sequestration in the spleen and liver. Hepatocyte-specific, but not myeloid-specific, ablation of AMPKα1 also reduced serum iron levels in association with increased hepcidin and decreased ferroportin protein levels. Mechanistically, AMPKα1 directly phosphorylated prolyl hydroxylase domain-containing (PHD)2 at serines 61 and 136, which suppressed PHD2-dependent hydroxylation of hypoxia-inducible factor (HIF)1α and subsequent regulation of hepatic hepcidin-related iron signalling. Inhibition of PHD2 hydroxylation ameliorated abnormal iron metabolism in hepatic AMPKα1-deficient mice. Furthermore, we found hepatic AMPKα/PHD2/HIFα/ hepcidin axes were highly clinically relevant to anaemia of chronic disease. CONCLUSION In conclusion, these observations suggest that hepatic AMPKα1 has an essential role in maintaining iron homeostasis by PHD2-dependent regulation of hepcidin, thus providing a potentially promising approach for the treatment of iron disturbances in chronic diseases.
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Affiliation(s)
- Cheng Wang
- Clinic Center of Human Gene ResearchUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Metabolic Abnormalities and Vascular AgingTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Department of RheumatologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Wencheng Zhang
- Department of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinanChina
| | - Wenjing Xu
- Clinic Center of Human Gene ResearchUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Zhaoyu Liu
- Department of CardiologySun Yat‐sen Memorial HospitalSun Yat‐sen University, GuangzhouChina
| | - Kai Huang
- Clinic Center of Human Gene ResearchUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Hubei Key Laboratory of Metabolic Abnormalities and Vascular AgingTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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17
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Vultaggio P, Loria F, Fakhouri F, Leuenberger N, Pruijm M. [New insights in the pathophysiology and treatment of renal anemia]. Rev Med Suisse 2022; 18:358-363. [PMID: 35235258 DOI: 10.53738/revmed.2022.18.771.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Renal anemia is a frequently encountered complication in patients suffering from advanced chronic kidney disease. This is mainly due to the decreased secretion of erythropoietin by the diseased kidneys. The current treatment of renal anemia is based on iron substitution and administration of recombinant erythropoietin. The discovery of HIF (Hypoxia-Inducible Factor) has led to the development of a new class of molecules that block the activity of prolyl-4-hydroxylases and stabilize HIF (Hypoxia-Inducible Factor), a transcription factor that plays an essential role in numerous cellular pathways, including those linked to erythropoiesis and iron metabolism. In this article, we discuss the current understanding of the pathophysiological mechanisms underlying renal anemia and the potential role of the new HIF-stabilizers in its treatment.
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Affiliation(s)
- Pauline Vultaggio
- Service de néphrologie et d'hypertension, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Francesco Loria
- Laboratoire suisse d'analyse du dopage, Centre universitaire romand de médecine légale, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Fadi Fakhouri
- Service de néphrologie et d'hypertension, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Nicolas Leuenberger
- Laboratoire suisse d'analyse du dopage, Centre universitaire romand de médecine légale, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne, Hôpitaux universitaires de Genève, 1211 Genève 14
| | - Menno Pruijm
- Service de néphrologie et d'hypertension, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
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18
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Ramirez-Moral I, Ferreira BL, Butler JM, van Weeghel M, Otto NA, de Vos AF, Yu X, de Jong MD, Houtkooper RH, van der Poll T. HIF-1α Stabilization in Flagellin-Stimulated Human Bronchial Cells Impairs Barrier Function. Cells 2022; 11:cells11030391. [PMID: 35159204 PMCID: PMC8834373 DOI: 10.3390/cells11030391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/15/2022] [Accepted: 01/21/2022] [Indexed: 11/16/2022] Open
Abstract
The respiratory epithelium provides a first line of defense against pathogens. Hypoxia-inducible factor (HIF)1α is a transcription factor which is stabilized in hypoxic conditions through the inhibition of prolyl-hydroxylase (PHD)2, the enzyme that marks HIF1α for degradation. Here, we studied the impact of HIF1α stabilization on the response of primary human bronchial epithelial (HBE) cells to the bacterial component, flagellin. The treatment of flagellin-stimulated HBE cells with the PHD2 inhibitor IOX2 resulted in strongly increased HIF1α expression. IOX2 enhanced the flagellin-induced expression of the genes encoding the enzymes involved in glycolysis, which was associated with the intracellular accumulation of pyruvate. An untargeted pathway analysis of RNA sequencing data demonstrated the strong inhibitory effects of IOX2 toward key innate immune pathways related to cytokine and mitogen-activated kinase signaling cascades in flagellin-stimulated HBE cells. Likewise, the cell-cell junction organization pathway was amongst the top pathways downregulated by IOX2 in flagellin-stimulated HBE cells, which included the genes encoding claudins and cadherins. This IOX2 effect was corroborated by an impaired barrier function, as measured by dextran permeability. These results provide a first insight into the effects associated with HIF1α stabilization in the respiratory epithelium, suggesting that HIF1α impacts properties that are key to maintaining homeostasis upon stimulation with a relevant bacterial agonist.
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Affiliation(s)
- Ivan Ramirez-Moral
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
- Correspondence: ; Tel.: +31-631080615
| | - Bianca L. Ferreira
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo 04023-062, Brazil
| | - Joe M. Butler
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.v.W.); (R.H.H.)
- Core Facility Metabolomics, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Natasja A. Otto
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
| | - Alex F. de Vos
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
| | - Xiao Yu
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (X.Y.); (M.D.d.J.)
| | - Menno D. de Jong
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (X.Y.); (M.D.d.J.)
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.v.W.); (R.H.H.)
| | - Tom van der Poll
- Center of Experimental and Molecular Medicine, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (B.L.F.); (J.M.B.); (N.A.O.); (A.F.d.V.); (T.v.d.P.)
- Division of Infectious Diseases, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
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19
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Bai J, Li L, Li Y, Zhang L. Genetic and immune changes in Tibetan high-altitude populations contribute to biological adaptation to hypoxia. Environ Health Prev Med 2022; 27:39. [PMID: 36244759 PMCID: PMC9640738 DOI: 10.1265/ehpm.22-00040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 08/19/2022] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Tibetans have lived at very high altitudes for thousands of years, and have a distinctive suite of physiological traits that enable them to tolerate environmental hypoxia. Expanding awareness and knowledge of the differences in hematology, hypoxia-associated genes, immune system of people living at different altitudes and from different ethnic groups may provide evidence for the prevention of mountain sickness. METHOD Ninety-five Han people at mid-altitude, ninety-five Tibetan people at high-altitude and ninety-eight Han people at high-altitude were recruited. Red blood cell parameters, immune cells, the contents of cytokines, hypoxia-associated gene single nucleotide polymorphisms (SNPs) were measured. RESULTS The values of Hematocrit (HCT), Mean cell volume (MCV) and Mean cell hemoglobin (MCH) in red blood cell, immune cell CD19+ B cell number, the levels of cytokines Erb-B2 receptor tyrosine kinase 3 (ErbB3) and Tumor necrosis factor receptor II (TNF-RII) and the levels of hypoxia-associated factors Hypoxia inducible factor-1α (HIF-1α), Hypoxia inducible factor-2α (HIF-2α) and HIF prolyl 4-hydroxylase 2 (PHD2) were decreased, while the frequencies of SNPs in twenty-six Endothelial PAS domain protein 1 (EPAS1) and Egl-9 family hypoxia inducible factor 1 (EGLN1) were increased in Tibetan people at high-altitude compared with that of Han peoples at high-altitude. Furthermore, compared with mid-altitude individuals, high-altitude individuals showed lower blood cell parameters including Hemoglobin concentration (HGB), HCT, MCV and MCH, higher Mean cell hemoglobin concentration (MCHC), lower immune cells including CD19+ B cells, CD4+ T cells and CD4/CD8 ratio, higher immune cells containing CD8+ T cells and CD16/56NK cells, decreased Growth regulated oncogene alpha (GROa), Macrophage inflammatory protein 1 beta (MIP-1b), Interleukin-8 (IL-8), and increased Thrombomodulin, downregulated hypoxia-associated factors including HIF1α, HIF2α and PHD2, and higher frequency of EGLN1 rs2275279. CONCLUSIONS These results indicated that biological adaption to hypoxia at high altitude might have been mediated by changes in immune cells, cytokines, and hypoxia-associated genes during the evolutionary history of Tibetan populations. Furthermore, different responses to high altitude were observed in different ethnic groups, which may provide a useful knowledge to improve the protection of high-altitude populations from mountain sickness.
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Affiliation(s)
- Jun Bai
- Institute of Hematology, Lanzhou University Second Hospital, Lanzhou 730000, China
- Gansu Key Laboratory of Hematology, Lanzhou 730000, China
| | - Lijuan Li
- Institute of Hematology, Lanzhou University Second Hospital, Lanzhou 730000, China
- Gansu Key Laboratory of Hematology, Lanzhou 730000, China
| | - Yanhong Li
- Institute of Hematology, Lanzhou University Second Hospital, Lanzhou 730000, China
- Gansu Key Laboratory of Hematology, Lanzhou 730000, China
| | - Liansheng Zhang
- Institute of Hematology, Lanzhou University Second Hospital, Lanzhou 730000, China
- Gansu Key Laboratory of Hematology, Lanzhou 730000, China
- Dingxi People’s Hospital, Dingxi 730500, China
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20
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Votava JA, Reese SR, Deck KM, Nizzi CP, Anderson SA, Djamali A, Eisenstein RS. Dysregulation of the sensory and regulatory pathways controlling cellular iron metabolism in unilateral obstructive nephropathy. Am J Physiol Renal Physiol 2022; 322:F89-F103. [PMID: 34843656 PMCID: PMC8742730 DOI: 10.1152/ajprenal.00537.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 01/03/2023] Open
Abstract
Chronic kidney disease involves disturbances in iron metabolism including anemia caused by insufficient erythropoietin (EPO) production. However, underlying mechanisms responsible for the dysregulation of cellular iron metabolism are incompletely defined. Using the unilateral ureteral obstruction (UUO) model in Irp1+/+ and Irp1-/- mice, we asked if iron regulatory proteins (IRPs), the central regulators of cellular iron metabolism and suppressors of EPO production, contribute to the etiology of anemia in kidney failure. We identified a significant reduction in IRP protein level and RNA binding activity that associates with a loss of the iron uptake protein transferrin receptor 1 (TfR1), increased expression of the iron storage protein subunits H- and L-ferritin, and a low but overall variable level of stainable iron in the obstructed kidney. This reduction in IRP RNA binding activity and ferritin RNA levels suggests the concomitant rise in ferritin expression and iron content in kidney failure is IRP dependent. In contrast, the reduction in the Epo mRNA level in the obstructed kidney was not rescued by genetic ablation of IRP1, suggesting disruption of normal hypoxia-inducible factor (HIF)-2α regulation. Furthermore, reduced expression of some HIF-α target genes in UUO occurred in the face of increased expression of HIF-α proteins and prolyl hydroxylases 2 and 1, the latter of which is not known to be HIF-α mediated. Our results suggest that the IRP system drives changes in cellular iron metabolism that are associated with kidney failure in UUO but that the impact of IRPs on EPO production is overridden by disrupted hypoxia signaling.NEW & NOTEWORTHY This study demonstrates that iron metabolism and hypoxia signaling are dysregulated in unilateral obstructive nephropathy. Expression of iron regulatory proteins (IRPs), central regulators of cellular iron metabolism, and the iron uptake (transferrin receptor 1) and storage (ferritins) proteins they target is strongly altered. This suggests a role of IRPs in previously observed changes in iron metabolism in progressive renal disease. Hypoxia signaling is disrupted and appeared to dominate the action of IRP1 in controlling erythropoietin expression.
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Affiliation(s)
- James A Votava
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Shannon R Reese
- Division of Nephrology, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Kathryn M Deck
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Christopher P Nizzi
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Sheila A Anderson
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Arjang Djamali
- Division of Nephrology, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin
- Division of Transplant, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin
| | - Richard S Eisenstein
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, Wisconsin
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21
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Eckardt L, Prange-Barczynska M, Hodson EJ, Fielding JW, Cheng X, Lima JDCC, Kurlekar S, Douglas G, Ratcliffe PJ, Bishop T. Developmental role of PHD2 in the pathogenesis of pseudohypoxic pheochromocytoma. Endocr Relat Cancer 2021; 28:757-772. [PMID: 34658364 PMCID: PMC8558849 DOI: 10.1530/erc-21-0211] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 09/20/2021] [Indexed: 01/03/2023]
Abstract
Despite a general role for the HIF hydroxylase system in cellular oxygen sensing and tumour hypoxia, cancer-associated mutations of genes in this pathway, including PHD2, PHD1, EPAS1 (encoding HIF-2α) are highly tissue-restricted, being observed in pseudohypoxic pheochromocytoma and paraganglioma (PPGL) but rarely, if ever, in other tumours. In an effort to understand that paradox and gain insights into the pathogenesis of pseudohypoxic PPGL, we constructed mice in which the principal HIF prolyl hydroxylase, Phd2, is inactivated in the adrenal medulla using TH-restricted Cre recombinase. Investigation of these animals revealed a gene expression pattern closely mimicking that of pseudohypoxic PPGL. Spatially resolved analyses demonstrated a binary distribution of two contrasting patterns of gene expression among adrenal medullary cells. Phd2 inactivation resulted in a marked shift in this distribution towards a Pnmt-/Hif-2α+/Rgs5+ population. This was associated with morphological abnormalities of adrenal development, including ectopic TH+ cells within the adrenal cortex and external to the adrenal gland. These changes were ablated by combined inactivation of Phd2 with Hif-2α, but not Hif-1α. However, they could not be reproduced by inactivation of Phd2 in adult life, suggesting that they arise from dysregulation of this pathway during adrenal development. Together with the clinical observation that pseudohypoxic PPGL manifests remarkably high heritability, our findings suggest that this type of tumour likely arises from dysregulation of a tissue-restricted action of the PHD2/HIF-2α pathway affecting adrenal development in early life and provides a model for the study of the relevant processes.
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Affiliation(s)
- Luise Eckardt
- Target Discovery Institute, University of Oxford, Oxford, UK
- Institute of Physiology and Pathophysiology, University of Heidelberg, Heidelberg, Germany
| | - Maria Prange-Barczynska
- Target Discovery Institute, University of Oxford, Oxford, UK
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Emma J Hodson
- The Francis Crick Institute, London, UK
- The Department of Experimental Medicine and Immunotherapeutics, University of Cambridge, Cambridge, UK
| | - James W Fielding
- Target Discovery Institute, University of Oxford, Oxford, UK
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Xiaotong Cheng
- Target Discovery Institute, University of Oxford, Oxford, UK
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | | | - Samvid Kurlekar
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - Gillian Douglas
- BHF Centre of Research Excellence, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Peter J Ratcliffe
- Target Discovery Institute, University of Oxford, Oxford, UK
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
- The Francis Crick Institute, London, UK
- Correspondence should be addressed to P J Ratcliffe or T Bishop: or
| | - Tammie Bishop
- Target Discovery Institute, University of Oxford, Oxford, UK
- Correspondence should be addressed to P J Ratcliffe or T Bishop: or
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22
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Angelini A, Saha PK, Jain A, Jung SY, Mynatt RL, Pi X, Xie L. PHDs/CPT1B/VDAC1 axis regulates long-chain fatty acid oxidation in cardiomyocytes. Cell Rep 2021; 37:109767. [PMID: 34610308 PMCID: PMC8658754 DOI: 10.1016/j.celrep.2021.109767] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/19/2021] [Accepted: 09/02/2021] [Indexed: 12/23/2022] Open
Abstract
Cardiac metabolism is a high-oxygen-consuming process, showing a preference for long-chain fatty acid (LCFA) as the fuel source under physiological conditions. However, a metabolic switch (favoring glucose instead of LCFA) is commonly reported in ischemic or late-stage failing hearts. The mechanism regulating this metabolic switch remains poorly understood. Here, we report that loss of PHD2/3, the cellular oxygen sensors, blocks LCFA mitochondria uptake and β-oxidation in cardiomyocytes. In high-fat-fed mice, PHD2/3 deficiency improves glucose metabolism but exacerbates the cardiac defects. Mechanistically, we find that PHD2/3 bind to CPT1B, a key enzyme of mitochondrial LCFA uptake, promoting CPT1B-P295 hydroxylation. Further, we show that CPT1B-P295 hydroxylation is indispensable for its interaction with VDAC1 and LCFA β-oxidation. Finally, we demonstrate that a CPT1B-P295A mutant constitutively binds to VDAC1 and rescues LCFA metabolism in PHD2/3-deficient cardiomyocytes. Together, our data identify an oxygen-sensitive regulatory axis involved in cardiac metabolism.
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Affiliation(s)
- Aude Angelini
- Department of Medicine, Section of Athero & Lipo, Baylor College of Medicine, Houston, TX 77030, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
| | - Pradip K Saha
- Department of Medicine, Division of Diabetes, Endocrinology & Metabolism, Diabetes Research Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Antrix Jain
- Department of Biochemistry and Molecular Biology, Mass Spectrometry Proteomics Core, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sung Yun Jung
- Department of Biochemistry and Molecular Biology, Mass Spectrometry Proteomics Core, Baylor College of Medicine, Houston, TX 77030, USA
| | - Randall L Mynatt
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Xinchun Pi
- Department of Medicine, Section of Athero & Lipo, Baylor College of Medicine, Houston, TX 77030, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
| | - Liang Xie
- Department of Medicine, Section of Athero & Lipo, Baylor College of Medicine, Houston, TX 77030, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA.
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Miao J, Wang C, Lucky AB, Liang X, Min H, Adapa SR, Jiang R, Kim K, Cui L. A unique GCN5 histone acetyltransferase complex controls erythrocyte invasion and virulence in the malaria parasite Plasmodium falciparum. PLoS Pathog 2021; 17:e1009351. [PMID: 34403450 PMCID: PMC8396726 DOI: 10.1371/journal.ppat.1009351] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 08/27/2021] [Accepted: 07/21/2021] [Indexed: 12/14/2022] Open
Abstract
The histone acetyltransferase GCN5-associated SAGA complex is evolutionarily conserved from yeast to human and functions as a general transcription co-activator in global gene regulation. In this study, we identified a divergent GCN5 complex in Plasmodium falciparum, which contains two plant homeodomain (PHD) proteins (PfPHD1 and PfPHD2) and a plant apetela2 (AP2)-domain transcription factor (PfAP2-LT). To dissect the functions of the PfGCN5 complex, we generated parasite lines with either the bromodomain in PfGCN5 or the PHD domain in PfPHD1 deleted. The two deletion mutants closely phenocopied each other, exhibiting significantly reduced merozoite invasion of erythrocytes and elevated sexual conversion. These domain deletions caused dramatic decreases not only in histone H3K9 acetylation but also in H3K4 trimethylation, indicating synergistic crosstalk between the two euchromatin marks. Domain deletion in either PfGCN5 or PfPHD1 profoundly disturbed the global transcription pattern, causing altered expression of more than 60% of the genes. At the schizont stage, these domain deletions were linked to specific down-regulation of merozoite genes involved in erythrocyte invasion, many of which contain the AP2-LT binding motif and are also regulated by AP2-I and BDP1, suggesting targeted recruitment of the PfGCN5 complex to the invasion genes by these specific factors. Conversely, at the ring stage, PfGCN5 or PfPHD1 domain deletions disrupted the mutually exclusive expression pattern of the entire var gene family, which encodes the virulent factor PfEMP1. Correlation analysis between the chromatin state and alteration of gene expression demonstrated that up- and down-regulated genes in these mutants are highly correlated with the silent and active chromatin states in the wild-type parasite, respectively. Collectively, the PfGCN5 complex represents a novel HAT complex with a unique subunit composition including an AP2 transcription factor, which signifies a new paradigm for targeting the co-activator complex to regulate general and parasite-specific cellular processes in this low-branching parasitic protist. Epigenetic regulation of gene expression plays essential roles in orchestrating the general and parasite-specific cellular pathways in the malaria parasite Plasmodium falciparum. To better understand the epigenetic mechanisms in this parasite, we characterized the histone acetyltransferase GCN5-mediated transcription regulation during intraerythrocytic development of the parasite. Using tandem affinity purification and proteomic characterization, we identified that the PfGCN5-associated complex contains nine core components, including two PHD domain proteins (PfPHD1 and PfPHD2) and an AP2-domain transcription factor, which is divergent from the canonical GCN5 complexes evolutionarily conserved from yeast to human. To understand the functions of the PfGCN5 complex, we performed domain deletions in two subunits of this complex, PfGCN5 and PfPHD1. We found that the two deletion mutants displayed very similar growth phenotypes, including significantly reduced merozoite invasion rates and elevated sexual conversion. These two mutants were associated with dramatic decreases in histone H3K9 acetylation and H3K4 trimethylation, which led to global changes in chromatin states and gene expression. Consistent with the phenotypes, genes significantly affected by the PfGCN5 and PfPHD1 gene disruption include those participating in parasite-specific pathways such as invasion, virulence, and sexual development. In conclusion, this study presents a new model of the PfGCN5 complex for targeting the co-activator complex to regulate general and parasite-specific cellular processes in this low-branching parasitic protist.
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Affiliation(s)
- Jun Miao
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- * E-mail: (JM); (LC)
| | - Chengqi Wang
- Center for Global Health and Infectious Diseases Research, College of Public Health, University of South Florida, Tampa, Florida, United States of America
| | - Amuza Byaruhanga Lucky
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Xiaoying Liang
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Hui Min
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Swamy Rakesh Adapa
- Center for Global Health and Infectious Diseases Research, College of Public Health, University of South Florida, Tampa, Florida, United States of America
| | - Rays Jiang
- Center for Global Health and Infectious Diseases Research, College of Public Health, University of South Florida, Tampa, Florida, United States of America
| | - Kami Kim
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
| | - Liwang Cui
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, United States of America
- * E-mail: (JM); (LC)
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Liu L, Liu X, Liu M, Xie D, Yan H. Proline hydroxylase domain-containing enzymes regulate calcium levels in cardiomyocytes by TRPA1 ion channel. Exp Cell Res 2021; 407:112777. [PMID: 34389294 DOI: 10.1016/j.yexcr.2021.112777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/01/2021] [Accepted: 08/07/2021] [Indexed: 11/15/2022]
Abstract
The proline hydroxylase domain-containing enzymes (PHDs) acts as cellular oxygen sensors, inducing a series of responses to hypoxia, especially during the regulation of metabolism and energy homeostasis. The increase of Ca2+ in cardiomyocytes, induced by the opening of PHD signaling pathway, is the key initiation signal necessary for the PHD-mediated regulation of the energy metabolism pathway, but the underlying molecular mechanism remains incompletely understood. This study used PHD inhibitors (PHIs) and PHD2-specific RNA interference (PHD2shRNA) to inhibit PHD signals in cardiomyocytes to explore whether transient receptor potential ankyrin 1 (TRPA1) is involved in the regulation of calcium ion influx in the PHD activation pathway associated with to AMP-activated protein kinase (AMPK). The Fluo-3AM probe was used to measure changes in free intracellular calcium ion concentrations, and western blot analysis was used to detect the levels of phosphorylated (P)-AMPK, TRPA1, and P-Ca2+/calmodulin-dependent protein kinase Ⅱ (CaMKⅡ) levels. The PHI-mediated inhibition of PHD resulted in an increase in free Ca2+ fluorescence in cardiomyocytes, which activated AMPK, TRPA1, and CaMKⅡ. The TRPA1 inhibitor HC030031, the CaMKII inhibitor KN93, and a ryanodine inhibitor (Ryanodine) were all able to inhibit the PHI-induced increase in intracellular Ca2+ and AMPK activation. Both PHIs and PHD2shRNA were able to effectively activate CaMKII and TRPA1. However, an inositol 1,4,5-triphosphate receptor (IP3R) inhibitor and the protein kinase A (PKA) inhibitor H89 did not significantly inhibit the PHI-induced increase in intracellular Ca2+ and AMPK activation. These results indicated that PHD might activate the CaMKⅡ pathway through the TRPA1 ion channel, inducing the release of calcium from the sarcoplasmic reticulum through ryanodine receptor 2 (RyR2), activating AMPK to initiate the protective effects of hypoxia in cardiomyocytes.
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Affiliation(s)
- Lan Liu
- Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, National Key Clinical Construction Specialty, Wound Repair and Regeneration Laboratory, Luzhou, Sichuan Province, 646000, China
| | - Xingke Liu
- Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, National Key Clinical Construction Specialty, Wound Repair and Regeneration Laboratory, Luzhou, Sichuan Province, 646000, China
| | - Mengchang Liu
- Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, National Key Clinical Construction Specialty, Wound Repair and Regeneration Laboratory, Luzhou, Sichuan Province, 646000, China
| | - Defu Xie
- Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, National Key Clinical Construction Specialty, Wound Repair and Regeneration Laboratory, Luzhou, Sichuan Province, 646000, China
| | - Hong Yan
- Department of Plastic and Burn Surgery, Affiliated Hospital of Southwest Medical University, National Key Clinical Construction Specialty, Wound Repair and Regeneration Laboratory, Luzhou, Sichuan Province, 646000, China.
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25
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Prados ME, Correa-Sáez A, Unciti-Broceta JD, Garrido-Rodríguez M, Jimenez-Jimenez C, Mazzone M, Minassi A, Appendino G, Calzado MA, Muñoz E. Betulinic Acid Hydroxamate is Neuroprotective and Induces Protein Phosphatase 2A-Dependent HIF-1α Stabilization and Post-transcriptional Dephosphorylation of Prolyl Hydrolase 2. Neurotherapeutics 2021; 18:1849-1861. [PMID: 34339019 PMCID: PMC8608974 DOI: 10.1007/s13311-021-01089-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2021] [Indexed: 02/04/2023] Open
Abstract
Huntington's disease (HD) is a neurodegenerative disorder characterized by unwanted choreatic movements, behavioral and psychiatric disturbances, and dementia. The activation of the hypoxic response pathway through the pharmacological inhibition of hypoxia-inducing factor (HIF) prolyl-hydroxylases (PHDs) is a promising approach for neurodegenerative diseases, including HD. Herein, we have studied the mechanism of action of the compound Betulinic acid hydroxamate (BAH), a hypoximimetic derivative of betulinic acid, and its efficacy against striatal neurodegeneration using complementary approaches. Firstly, we showed the molecular mechanisms through which BAH modifies the activity of the PHD2 prolyl hydroxylase, thus directly affecting HIF-1α stability. BAH treatment reduces PHD2 phosphorylation on Ser-125 residue, responsible for the control of its hydrolase activity. HIF activation by BAH is inhibited by okadaic acid and LB-100 indicating that a protein phosphatase 2A (PP2A) is implicated in the mechanism of action of BAH. Furthermore, in striatal cells bearing a mutated form of the huntingtin protein, BAH stabilized HIF-1α protein, induced Vegf and Bnip3 gene expression and protected against mitochondrial toxin-induced cytotoxicity. Pharmacokinetic analyses showed that BAH has a good brain penetrability and experiments performed in a mouse model of striatal neurodegeneration induced by 3-nitropropionic acid showed that BAH improved the clinical symptoms. In addition, BAH also prevented neuronal loss, decreased reactive astrogliosis and microglial activation, inhibited the upregulation of proinflammatory markers, and improved antioxidant defenses in the brain. Taken together, our results show BAH's ability to activate the PP2A/PHD2/HIF pathway, which may have important implications in the treatment of HD and perhaps other neurodegenerative diseases.
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Affiliation(s)
| | - Alejandro Correa-Sáez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain
- Department of Cellular Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Hospital Reina Sofia, Cordoba, Spain
| | | | - Martín Garrido-Rodríguez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain
- Department of Cellular Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Hospital Reina Sofia, Cordoba, Spain
| | - Carla Jimenez-Jimenez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain
- Department of Cellular Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
- Hospital Universitario Hospital Reina Sofia, Cordoba, Spain
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB-KULeuven, 3000, Leuven, Belgium
| | - Alberto Minassi
- Department of Drug Science, University of Piemonte Orientale, Novara, Italy
| | - Giovanni Appendino
- Department of Drug Science, University of Piemonte Orientale, Novara, Italy
| | - Marco A Calzado
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain.
- Department of Cellular Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain.
- Hospital Universitario Hospital Reina Sofia, Cordoba, Spain.
| | - Eduardo Muñoz
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain.
- Department of Cellular Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain.
- Hospital Universitario Hospital Reina Sofia, Cordoba, Spain.
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26
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Wing PAC, Liu PJ, Harris JM, Magri A, Michler T, Zhuang X, Borrmann H, Minisini R, Frampton NR, Wettengel JM, Mailly L, D'Arienzo V, Riedl T, Nobre L, Weekes MP, Pirisi M, Heikenwalder M, Baumert TF, Hammond EM, Mole DR, Protzer U, Balfe P, McKeating JA. Hypoxia inducible factors regulate hepatitis B virus replication by activating the basal core promoter. J Hepatol 2021; 75:64-73. [PMID: 33516779 PMCID: PMC8214165 DOI: 10.1016/j.jhep.2020.12.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Hypoxia inducible factors (HIFs) are a hallmark of inflammation and are key regulators of hepatic immunity and metabolism, yet their role in HBV replication is poorly defined. HBV replicates in hepatocytes within the liver, a naturally hypoxic organ, however most studies of viral replication are performed under conditions of atmospheric oxygen, where HIFs are inactive. We therefore investigated the role of HIFs in regulating HBV replication. METHODS Using cell culture, animal models, human tissue and pharmacological agents inhibiting the HIF-prolyl hydroxylases, we investigated the impact of hypoxia on the HBV life cycle. RESULTS Culturing liver cell-based model systems under low oxygen uncovered a new role for HIFs in binding HBV DNA and activating the basal core promoter, leading to increased pre-genomic RNA and de novo HBV particle secretion. The presence of hypoxia responsive elements among all primate members of the hepadnaviridae highlights an evolutionary conserved role for HIFs in regulating this virus family. CONCLUSIONS Identifying a role for this conserved oxygen sensor in regulating HBV transcription suggests that this virus has evolved to exploit the HIF signaling pathway to persist in the low oxygen environment of the liver. Our studies show the importance of considering oxygen availability when studying HBV-host interactions and provide innovative routes to better understand and target chronic HBV infection. LAY SUMMARY Viral replication in host cells is defined by the cellular microenvironment and one key factor is local oxygen tension. Hepatitis B virus (HBV) replicates in the liver, a naturally hypoxic organ. Hypoxia inducible factors (HIFs) are the major sensors of low oxygen; herein, we identify a new role for these factors in regulating HBV replication, revealing new therapeutic targets.
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Affiliation(s)
- Peter A C Wing
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; Chinese Academy of Medical Sciences (CAMS) Oxford Institute (COI), University of Oxford, Oxford, UK
| | | | - James M Harris
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Andrea Magri
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Thomas Michler
- Institute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany; German Center for Infection Research (DZIF), Munich partner site, Munich, Germany
| | - Xiaodong Zhuang
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Helene Borrmann
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Rosalba Minisini
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy
| | - Nicholas R Frampton
- Institute of Inflammation and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Jochen M Wettengel
- Institute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany; German Center for Infection Research (DZIF), Munich partner site, Munich, Germany
| | - Laurent Mailly
- Université de Strasbourg, Strasbourg, France; INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | | | - Tobias Riedl
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Luis Nobre
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Michael P Weekes
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Mario Pirisi
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Thomas F Baumert
- Université de Strasbourg, Strasbourg, France; INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Ester M Hammond
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | - David R Mole
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Ulrike Protzer
- Institute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany; German Center for Infection Research (DZIF), Munich partner site, Munich, Germany
| | - Peter Balfe
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Jane A McKeating
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; Chinese Academy of Medical Sciences (CAMS) Oxford Institute (COI), University of Oxford, Oxford, UK.
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Ju S, Lim L, Wi K, Park C, Ki YJ, Choi DH, Song H. LRP5 Regulates HIF-1α Stability via Interaction with PHD2 in Ischemic Myocardium. Int J Mol Sci 2021; 22:ijms22126581. [PMID: 34205318 PMCID: PMC8235097 DOI: 10.3390/ijms22126581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 12/22/2022] Open
Abstract
Low-density lipoprotein receptor-related protein 5 (LRP5) has been studied as a co-receptor for Wnt/β-catenin signaling. However, its role in the ischemic myocardium is largely unknown. Here, we show that LRP5 may act as a negative regulator of ischemic heart injury via its interaction with prolyl hydroxylase 2 (PHD2), resulting in hypoxia-inducible factor-1α (HIF-1α) degradation. Overexpression of LRP5 in cardiomyocytes promoted hypoxia-induced apoptotic cell death, whereas LRP5-silenced cardiomyocytes were protected from hypoxic insult. Gene expression analysis (mRNA-seq) demonstrated that overexpression of LRP5 limited the expression of HIF-1α target genes. LRP5 promoted HIF-1α degradation, as evidenced by the increased hydroxylation and shorter stability of HIF-1α under hypoxic conditions through the interaction between LRP5 and PHD2. Moreover, the specific phosphorylation of LRP5 at T1492 and S1503 is responsible for enhancing the hydroxylation activity of PHD2, resulting in HIF-1α degradation, which is independent of Wnt/β-catenin signaling. Importantly, direct myocardial delivery of adenoviral constructs, silencing LRP5 in vivo, significantly improved cardiac function in infarcted rat hearts, suggesting the potential value of LRP5 as a new target for ischemic injury treatment.
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Affiliation(s)
- Sujin Ju
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, Gwangju 61452, Korea; (S.J.); (K.W.)
| | - Leejin Lim
- Cancer Mutation Research Center, Chosun University, Gwangju 61452, Korea;
| | - Kwanhwan Wi
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, Gwangju 61452, Korea; (S.J.); (K.W.)
| | - Changwon Park
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
| | - Young-Jae Ki
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju 61452, Korea; (Y.-J.K.); (D.-H.C.)
| | - Dong-Hyun Choi
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju 61452, Korea; (Y.-J.K.); (D.-H.C.)
| | - Heesang Song
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, Gwangju 61452, Korea; (S.J.); (K.W.)
- Correspondence: ; Tel.: +82-62-230-6290
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Ogawa C, Tsuchiya K, Tomosugi N, Maeda K. Hypoxia-inducible factor prolyl hydroxylase domain inhibitor may maintain hemoglobin synthesis at lower serum ferritin and transferrin saturation levels than darbepoetin alfa. PLoS One 2021; 16:e0252439. [PMID: 34143801 PMCID: PMC8213169 DOI: 10.1371/journal.pone.0252439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/14/2021] [Indexed: 12/18/2022] Open
Abstract
Background Hypoxia-inducible factor (HIF) prolyl hydroxylase domain inhibitors, which have recently become clinically available for treating renal anemia, are attracting attention for their novel mechanisms of action. Methods Relationships of reticulocyte hemoglobin content (CHr), which reflects recent Hb synthesis, with serum ferritin (s-ft) and transferrin saturation (TSAT) were examined in 30 patients on hemodialysis after switching from darbepoetin alfa (DA) to roxadustat (Rox). Iron deficiency was defined as CHr < 32.0 pg. Cutoff values of s-ft and TSAT were determined using receiver operating characteristic curves for the endpoint CHr ≥ 32.0 pg. Logistic analysis was performed with the reference group having s-ft or TSAT below the corresponding cutoff value (low vs high). Results With the endpoint CHr ≥ 32.0 pg on Day 0, cutoff values for s-ft and TSAT were respectively 49.7 ng/mL and 21.6% on Day 0 and 35.5 ng/mL and 16.2% on Day 28. With the endpoint CHr ≥ 32.0 pg on Day 28, cutoff values for s-ft and TSAT on Day 0 were 81.6 ng/mL and 23.9%, respectively. According to multivariable logistic analysis, the odds ratios of CHr ≥ 32.0 pg on Day 0 were significantly higher for high TSAT on Day 0 [34.7 (95% CI 2.42–131.0), p<0.003] and Day 28 [24.8 (95% CI 2.75–224.0), p = 0.004]. There were no significant differences by s-ft. Odd ratios of CHr ≥ 32.0 pg on Day 28 were also significantly higher for high s-ft on Day 0 [16.0 (95% CI 1.57–163.0), p = 0.019] and high TSAT on Day 0 [13.5 (95% CI 1.24–147.0), p<0.033]. Conclusions Our results suggest Hb synthesis was maintained with lower TSAT and s-ft during Rox therapy compared with DA therapy. To avoid iron deficiency during the 4 weeks after switching DA to Rox, ideal s-ft and TSAT levels before the switch are 81.6 ng/mL and 23.9%, respectively.
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Affiliation(s)
- Chie Ogawa
- Maeda Institute of Renal Research, Kawasaki, Kanagawa, Japan
- Biomarker Society, Inc., Kawasaki, Kanagawa, Japan
- * E-mail:
| | - Ken Tsuchiya
- Biomarker Society, Inc., Kawasaki, Kanagawa, Japan
- Department of Blood Purification, Tokyo Women’s Medical University, Tokyo, Japan
| | - Naohisa Tomosugi
- Biomarker Society, Inc., Kawasaki, Kanagawa, Japan
- Division of Systems Bioscience for Drug Discovery Project Research Center, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Kunimi Maeda
- Maeda Institute of Renal Research, Kawasaki, Kanagawa, Japan
- Biomarker Society, Inc., Kawasaki, Kanagawa, Japan
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Singh L, Singh M, Rastogi S, Choudhary A, Kumar D, Raj R, Ansari MN, Saeedan AS, Kaithwas G. Effect of Voacamine upon inhibition of hypoxia induced fatty acid synthesis in a rat model of methyln-nitrosourea induced mammary gland carcinoma. BMC Mol Cell Biol 2021; 22:33. [PMID: 34090331 PMCID: PMC8180083 DOI: 10.1186/s12860-021-00371-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/04/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In the present study, fatty acid synthesis is targeted to combat mammary gland carcinoma by activating prolyl hydroxylase-2 with Voacamine alone and in combination with Tamoxifen. It was hypothesized that the activation of prolyl hydroxylase-2 would inhibit the hypoxia-induced fatty acid synthesis and mammary gland carcinoma. Mammary gland carcinoma was induced with a single dose administration of N-methyl-N-nitrosourea (50 mg/kg,i.p.) and treatment with Voacamine and Tamoxifen 15 days after carcinogen administration. RESULTS At the end of the study, hemodynamic profiling of animals was recorded to assess the cardiotoxic potential of the drug. Blood serum was separated and subjected to nuclear magnetic resonance spectroscopy. Carmine staining and histopathology of mammary gland tissue were performed to evaluate the anti-angiogenic potential of the drug. The antioxidant potential of the drug was measured with antioxidant markers. Western blotting was performed to study the effect of the drug at the molecular level. CONCLUSION Results of the study have shown that Voacamine treatment stopped further decrease in body weight of experimental animals. The hemodynamic study evidenced that Voacamine at a low dose is safe in cardiac patients. Microscopic evaluation of mammary gland tissue documented the anti-angiogenic potential of Voacamine and Tamoxifen therapy. Perturbed serum metabolites were also restored to normal along with antioxidant markers. Immunoblotting of mammary gland tissue also depicted restoration of proteins of the hypoxic and fatty acid pathway. Conclusively, Voacamine and its combination with Tamoxifen activated prolyl hydroxylase-2 to combat mammary gland carcinoma.
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Affiliation(s)
- Lakhveer Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, VidyaVihar, Raebareily Road, Lucknow, 226025, India
| | - Manjari Singh
- Department of Pharmaceutical Sciences, Assam University, Silchar, Assam, 788011, India
| | - Shubham Rastogi
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, VidyaVihar, Raebareily Road, Lucknow, 226025, India
| | - Anurag Choudhary
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, VidyaVihar, Raebareily Road, Lucknow, 226025, India
| | - Dinesh Kumar
- Center for Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Science, Lucknow, India
| | - Ritu Raj
- Center for Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Science, Lucknow, India
| | - Mohd Nazam Ansari
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdulaziz S Saeedan
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Gaurav Kaithwas
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, VidyaVihar, Raebareily Road, Lucknow, 226025, India.
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Niu J, Wu C, Zhang M, Yang Z, Liu Z, Fu F, Li J, Feng N, Gu X, Zhang S, Liu Y, Fan R, Li J, Pei J. κ-opioid receptor stimulation alleviates rat vascular smooth muscle cell calcification via PFKFB3-lactate signaling. Aging (Albany NY) 2021; 13:14355-14371. [PMID: 34016793 PMCID: PMC8202865 DOI: 10.18632/aging.203050] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/31/2021] [Indexed: 12/15/2022]
Abstract
In the present study, the effects and mechanism of action of U50,488H (a selective κ-opioid receptor agonist) on calcification of rat vascular smooth muscle cells (VSMCs) induced by β-glycerophosphate (β-GP) were investigated. VSMCs were isolated and cultured in traditional FBS-based media. A calcification model was established in VSMCs under hyperphosphatemia and intracellular calcium contents. Alkaline phosphatase (ALP), lactate dehydrogenase (LDH), and lactate were detected in cell culture supernatants before and after treatment. Alizarin red staining was used to detect the degree of calcification of VSMCs. Expression levels of key molecules of osteogenic markers, fructose-2,6-biphosphatase 3 (PFKFB3), and proline hydroxylase 2 (PHD2), were determined using western blotting. Further, vascular calcification was induced by vitamin D3 plus nicotine in rats and isolated thoracic aortas, calcium concentration was assessed in rat aortic rings in vitro. We demonstrated that U50,488H inhibited VSMC calcification in a concentration-dependent manner. Moreover, U50,488H significantly inhibited osteogenic differentiation and ALP activity in VSMCs pretreated with β-GP. Further studies confirmed that PFKFB3 expression, LDH level, and lactate content significantly increased during calcification of VSMCs; U50,488H reversed these changes. PHD2 expression showed the opposite trend compared to PFKFB3 expression. nor-BNI or 3-PO abolished U50,488H protective effects. Besides, U50,488H inhibited VSMC calcification in rat aortic rings ex vivo. Collectively, our experiments show that κ-opioid receptor activation inhibits VSMC calcification by reducing PFKFB3 expression and lactate content, providing a potential drug target and strategy for the clinical treatment of vascular calcification.
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Affiliation(s)
- Jin Niu
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
- Department of Healthcare of 940 Hospital, Joint Logistics Support Force of PLA, Lanzhou 730000, Gansu Province, China
| | - Chen Wu
- Department of Neurology, Xinjiang Military General Hospital, Urumqi 830000, Xinjiang Province, China
| | - Min Zhang
- Department of College of Life Sciences, Northwest University, Xi'an 710032, Shaanxi Province, China
| | - Zhen Yang
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Zhenhua Liu
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Feng Fu
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Jun Li
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Na Feng
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Xiaoming Gu
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Shumiao Zhang
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yali Liu
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Rong Fan
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Juan Li
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Jianming Pei
- Department of Physiology and Pathophysiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
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Richardson NL, O'Malley LJ, Weissberger D, Tumber A, Schofield CJ, Griffith R, Jones NM, Hunter L. Discovery of neuroprotective agents that inhibit human prolyl hydroxylase PHD2. Bioorg Med Chem 2021; 38:116115. [PMID: 33862469 DOI: 10.1016/j.bmc.2021.116115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/13/2021] [Indexed: 12/17/2022]
Abstract
Prolyl hydroxylase (PHD) enzymes play a critical role in the cellular responses to hypoxia through their regulation of the hypoxia inducible factor α (HIF-α) transcription factors. PHD inhibitors show promise for the treatment of diseases including anaemia, cardiovascular disease and stroke. In this work, a pharmacophore-based virtual high throughput screen was used to identify novel potential inhibitors of human PHD2. Two moderately potent new inhibitors were discovered, with IC50 values of 4 μM and 23 μM respectively. Cell-based studies demonstrate that these compounds exhibit protective activity in neuroblastoma cells, suggesting that they have the potential to be developed into clinically useful neuroprotective agents.
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Affiliation(s)
- Nicole L Richardson
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia
| | - Laura J O'Malley
- School of Medical Sciences, University of New South Wales (UNSW), Sydney, Australia
| | - Daniel Weissberger
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia
| | - Anthony Tumber
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Resistance, 12, Mansfield Road, Department of Chemistry, University of Oxford, OX1 3TA, United Kingdom
| | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Resistance, 12, Mansfield Road, Department of Chemistry, University of Oxford, OX1 3TA, United Kingdom
| | - Renate Griffith
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia
| | - Nicole M Jones
- School of Medical Sciences, University of New South Wales (UNSW), Sydney, Australia.
| | - Luke Hunter
- School of Chemistry, University of New South Wales (UNSW), Sydney, Australia.
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Shinozaki Y, Fukui K, Kobayashi H, Yoshiuchi H, Matsuo A, Matsushita M. JTZ-951 (enarodustat), a hypoxia-inducible factor prolyl hydroxylase inhibitor, improves iron utilization and anemia of inflammation: Comparative study against recombinant erythropoietin in rat. Eur J Pharmacol 2021; 898:173990. [PMID: 33657422 DOI: 10.1016/j.ejphar.2021.173990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/14/2021] [Accepted: 02/22/2021] [Indexed: 10/22/2022]
Abstract
Anemia with inflammation-induced defective iron utilization is a pathological condition observed in patients suffering from chronic kidney disease (CKD) or chronic inflammatory disease. There is no reasonable treatment for these conditions, because the effects of erythropoiesis stimulating agents (ESAs) or iron supplementation in the treatment of anemia are insufficient. JTZ-951 (enarodustat) has been characterized as a novel, orally bioavailable inhibitor of hypoxia-inducible factor prolyl hydroxylase (HIF-PH), and has been developed as a novel therapeutic agent for anemia with CKD. In this study, the effects of JTZ-951 on iron utilization during erythropoiesis and on anemia of inflammation were compared with those of recombinant human erythropoietin (rHuEPO) using normal rat and rat model of anemia of inflammation. In normal rats, under conditions in which JTZ-951 and rHuEPO showed similar erythropoietic effect, repeated doses of JTZ-951 induced erythropoiesis while retaining the hemoglobin content in red blood cells, while administration of rHuEPO resulted in decrease in some erythrocyte-related parameters. As for iron-related parameters during erythropoiesis, JTZ-951 exhibited more efficient iron utilization compared to rHuEPO. A single dose of JTZ-951 resulted in decrease in hepcidin expression observed within 24 h after administration, but a single dose of rHuEPO did not. In a rat model of anemia of inflammation (also known as a model with functional iron-deficiency), JTZ-951 showed erythropoietic effect, in contrast with rHuEPO. These results suggest that, unlike rHuEPO, JTZ-951 stimulates erythropoiesis by increasing iron utilization, and improves anemia of inflammation.
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Affiliation(s)
- Yuichi Shinozaki
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan.
| | - Kenji Fukui
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan
| | - Hatsue Kobayashi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan
| | - Hiromi Yoshiuchi
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan
| | - Akira Matsuo
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan
| | - Mutsuyoshi Matsushita
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, 569-1125, Japan
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Dengler F, Sova S, Salo AM, Mäki JM, Koivunen P, Myllyharju J. Expression and Roles of Individual HIF Prolyl 4-Hydroxylase Isoenzymes in the Regulation of the Hypoxia Response Pathway along the Murine Gastrointestinal Epithelium. Int J Mol Sci 2021; 22:4038. [PMID: 33919829 PMCID: PMC8070794 DOI: 10.3390/ijms22084038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/07/2021] [Accepted: 04/11/2021] [Indexed: 12/11/2022] Open
Abstract
The HIF prolyl 4-hydroxylases (HIF-P4H) control hypoxia-inducible factor (HIF), a powerful mechanism regulating cellular adaptation to decreased oxygenation. The gastrointestinal epithelium subsists in "physiological hypoxia" and should therefore have an especially well-designed control over this adaptation. Thus, we assessed the absolute mRNA expression levels of the HIF pathway components, Hif1a, HIF2a, Hif-p4h-1, 2 and 3 and factor inhibiting HIF (Fih1) in murine jejunum, caecum and colon epithelium using droplet digital PCR. We found a higher expression of all these genes towards the distal end of the gastrointestinal tract. We detected mRNA for Hif-p4h-1, 2 and 3 in all parts of the gastrointestinal tract. Hif-p4h-2 had significantly higher expression levels compared to Hif-p4h-1 and 3 in colon and caecum epithelium. To test the roles each HIF-P4H isoform plays in the gut epithelium, we measured the gene expression of classical HIF target genes in Hif-p4h-1-/-, Hif-p4h-2 hypomorph and Hif-p4h-3-/- mice. Only Hif-p4h-2 hypomorphism led to an upregulation of HIF target genes, confirming a predominant role of HIF-P4H-2. However, the abundance of Hif-p4h-1 and 3 expression in the gastrointestinal epithelium implies that these isoforms may have specific functions as well. Thus, the development of selective inhibitors might be useful for diverging therapeutic needs.
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Affiliation(s)
- Franziska Dengler
- Unit of Physiology, Pathophysiology and Experimental Endocrinology, University of Veterinary Medicine, 1210 Vienna, Austria
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
- Institute of Veterinary Physiology, University of Leipzig, 04103 Leipzig, Germany
| | - Sofia Sova
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
| | - Antti M. Salo
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
| | - Joni M. Mäki
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
| | - Peppi Koivunen
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
| | - Johanna Myllyharju
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, 90220 Oulu, Finland; (S.S.); (A.M.S.); (J.M.M.); (P.K.); (J.M.)
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Gheware A, Dholakia D, Kannan S, Panda L, Rani R, Pattnaik BR, Jain V, Parekh Y, Enayathullah MG, Bokara KK, Subramanian V, Mukerji M, Agrawal A, Prasher B. Adhatoda Vasica attenuates inflammatory and hypoxic responses in preclinical mouse models: potential for repurposing in COVID-19-like conditions. Respir Res 2021; 22:99. [PMID: 33823870 PMCID: PMC8022127 DOI: 10.1186/s12931-021-01698-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 03/29/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND COVID-19 pneumonia has been associated with severe acute hypoxia, sepsis-like states, thrombosis and chronic sequelae including persisting hypoxia and fibrosis. The molecular hypoxia response pathway has been associated with such pathologies and our recent observations on anti-hypoxic and anti-inflammatory effects of whole aqueous extract of Adhatoda Vasica (AV) prompted us to explore its effects on relevant preclinical mouse models. METHODS In this study, we tested the effect of whole aqueous extract of AV, in murine models of bleomycin induced pulmonary fibrosis, Cecum Ligation and Puncture (CLP) induced sepsis, and siRNA induced hypoxia-thrombosis phenotype. The effect on lung of AV treated naïve mice was also studied at transcriptome level. We also determined if the extract may have any effect on SARS-CoV2 replication. RESULTS Oral administration AV extract attenuates increased airway inflammation, levels of transforming growth factor-β1 (TGF-β1), IL-6, HIF-1α and improves the overall survival rates of mice in the models of pulmonary fibrosis and sepsis and rescues the siRNA induced inflammation and associated blood coagulation phenotypes in mice. We observed downregulation of hypoxia, inflammation, TGF-β1, and angiogenesis genes and upregulation of adaptive immunity-related genes in the lung transcriptome. AV treatment also reduced the viral load in Vero cells infected with SARS-CoV2. CONCLUSION Our results provide a scientific rationale for this ayurvedic herbal medicine in ameliorating the hypoxia-hyperinflammation features and highlights the repurposing potential of AV in COVID-19-like conditions.
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Affiliation(s)
- Atish Gheware
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, 110007, India
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics) CSIR-IGIB, Delhi, 110007, India
- Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics), CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Dhwani Dholakia
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, 110007, India
- Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics), CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sadasivam Kannan
- Center for High Computing, CSIR- Central Leather Research Institute (CLRI), Chennai, 600020, India
| | - Lipsa Panda
- Center for Translational Research in Lung Disease, CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ritu Rani
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, 110007, India
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics) CSIR-IGIB, Delhi, 110007, India
- Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics), CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | | | - Vaibhav Jain
- Center for Translational Research in Lung Disease, CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Yash Parekh
- CSIR-Center for Cellular and Molecular Biology, Annexe-II, Medical Biotechnology Complex, Uppal Road, Hyderabad, Telangana, 500007, India
| | - M Ghalib Enayathullah
- CSIR-Center for Cellular and Molecular Biology, Annexe-II, Medical Biotechnology Complex, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Kiran Kumar Bokara
- CSIR-Center for Cellular and Molecular Biology, Annexe-II, Medical Biotechnology Complex, Uppal Road, Hyderabad, Telangana, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Venkatesan Subramanian
- Center for High Computing, CSIR- Central Leather Research Institute (CLRI), Chennai, 600020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Mitali Mukerji
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, 110007, India
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics) CSIR-IGIB, Delhi, 110007, India
- Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics), CSIR- IGIB, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Anurag Agrawal
- Center for Translational Research in Lung Disease, CSIR- IGIB, Delhi, 110007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| | - Bhavana Prasher
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research -Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, 110007, India.
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics) CSIR-IGIB, Delhi, 110007, India.
- Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRoughAyurgenomics), CSIR- IGIB, Delhi, 110007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Zacharias NM, Wang L, Maity T, Li L, Millward SW, Karam JA, Wood CG, Navai N. Prolyl Hydroxylase 3 Knockdown Accelerates VHL-Mutant Kidney Cancer Growth In Vivo. Int J Mol Sci 2021; 22:2849. [PMID: 33799686 PMCID: PMC8001211 DOI: 10.3390/ijms22062849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 03/07/2021] [Indexed: 01/01/2023] Open
Abstract
Von Hippel Lindau (VHL) inactivation, which is common in clear cell renal cell carcinoma (ccRCC), leads directly to the disruption of oxygen homoeostasis. VHL works through hypoxia-inducible factors (HIFs). Within this VHL-HIF system, prolyl hydroxylases (PHDs) are the intermediary proteins that initiate the degradation of HIFs. PHD isoform 3's (PHD3) role in ccRCC growth in vivo is poorly understood. Using viral transduction, we knocked down the expression of PHD3 in the human ccRCC cell line UMRC3. Compared with control cells transduced with scrambled vector (UMRC3-SC cells), PHD3-knockdown cells (UMRC3-PHD3KD cells) showed increased cell invasion, tumor growth, and response to sunitinib. PHD3 knockdown reduced HIF2α expression and increased phosphorylated epidermal growth factor (EGFR) expression in untreated tumor models. However, following sunitinib treatment, expression of HIF2α and phosphorylated EGFR were equivalent in both PHD3 knockdown and control tumors. PHD3 knockdown changed the overall redox state of the cell as seen by the increased concentration of glutathione in PHD3 knockdown tumors relative to control tumors. UMRC3-PHD3KD cells had increased proliferation in cell culture when grown in the presence of hydrogen peroxide compared to UMRC3-SC control cells. Our findings illustrate (1) the variable effect of PHD3 on HIF2α expression, (2) an inverse relationship between PHD3 expression and tumor growth in ccRCC animal models, and (3) the role of PHD3 in maintaining the redox state of UMRC3 cells and their proliferative rate under oxidative stress.
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Affiliation(s)
- Niki M. Zacharias
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
| | - Lei Wang
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
| | - Tapati Maity
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
| | - Li Li
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
| | - Steven W. Millward
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Jose A. Karam
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Christopher G. Wood
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
| | - Neema Navai
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.Z.); (L.W.); (T.M.); (L.L.); (J.A.K.); (C.G.W.)
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36
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Zheng F, Chen J, Zhang X, Wang Z, Chen J, Lin X, Huang H, Fu W, Liang J, Wu W, Li B, Yao H, Hu H, Song E. The HIF-1α antisense long non-coding RNA drives a positive feedback loop of HIF-1α mediated transactivation and glycolysis. Nat Commun 2021; 12:1341. [PMID: 33637716 PMCID: PMC7910558 DOI: 10.1038/s41467-021-21535-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 01/25/2021] [Indexed: 12/22/2022] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a master driver of glucose metabolism in cancer cells. Here, we demonstrate that a HIF-1α anti-sense lncRNA, HIFAL, is essential for maintaining and enhancing HIF-1α-mediated transactivation and glycolysis. Mechanistically, HIFAL recruits prolyl hydroxylase 3 (PHD3) to pyruvate kinase 2 (PKM2) to induce its prolyl hydroxylation and introduces the PKM2/PHD3 complex into the nucleus via binding with heterogeneous nuclear ribonucleoprotein F (hnRNPF) to enhance HIF-1α transactivation. Reciprocally, HIF-1α induces HIFAL transcription, which forms a positive feed-forward loop to maintain the transactivation activity of HIF-1α. Clinically, high HIFAL expression is associated with aggressive breast cancer phenotype and poor patient outcome. Furthermore, HIFAL overexpression promotes tumor growth in vivo, while targeting both HIFAL and HIF-1α significantly reduces their effect on cancer growth. Overall, our results indicate a critical regulatory role of HIFAL in HIF-1α-driven transactivation and glycolysis, identifying HIFAL as a therapeutic target for cancer treatment.
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Affiliation(s)
- Fang Zheng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Jianing Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Xiaoqian Zhang
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Zifeng Wang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, China
| | - Jiewen Chen
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Xiaorong Lin
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Hongyan Huang
- Chongqing Key Laboratory of Molecular Oncology and Epigenetics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Wenkui Fu
- Department of Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Jing Liang
- Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University Health Science Center, 38 Xueyuan Road, Beijing, 100191, China
| | - Wei Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Bo Li
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Herui Yao
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Hai Hu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
- Department of Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Erwei Song
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
- Bioland Laboratory, Guangzhou, 510005, China.
- Fountain-Valley Institute for Life Sciences, 4th Floor, Building D, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Huangpu District, Guangzhou, 510535, China.
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Katagiri N, Hitomi H, Mae SI, Kotaka M, Lei L, Yamamoto T, Nishiyama A, Osafune K. Retinoic acid regulates erythropoietin production cooperatively with hypoxia-inducible factors in human iPSC-derived erythropoietin-producing cells. Sci Rep 2021; 11:3936. [PMID: 33594180 PMCID: PMC7887226 DOI: 10.1038/s41598-021-83431-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 02/03/2021] [Indexed: 12/13/2022] Open
Abstract
Erythropoietin (EPO) is a crucial hormone for erythropoiesis and produced by adult kidneys. Insufficient EPO production in chronic kidney disease (CKD) can cause renal anemia. Although hypoxia-inducible factors (HIFs) are known as a main regulator, the mechanisms of EPO production have not been fully elucidated. In this study, we aimed to examine the roles of retinoic acid (RA) in EPO production using EPO-producing cells derived from human induced pluripotent stem cells (hiPSC-EPO cells) that we previously established. RA augmented EPO production by hiPSC-EPO cells under hypoxia or by treatment with prolyl hydroxylase domain-containing protein (PHD) inhibitors that upregulate HIF signals. Combination treatment with RA and a PHD inhibitor improved renal anemia in vitamin A-depleted CKD model mice. Our findings using hiPSC-EPO cells and CKD model mice may contribute to clarifying the EPO production mechanism and developing efficient therapies for renal anemia.
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Affiliation(s)
- Naoko Katagiri
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Hirofumi Hitomi
- Department of iPS Stem Cell Regenerative Medicine, Kansai Medical University, Osaka, 573-1010, Japan
| | - Shin-Ichi Mae
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Maki Kotaka
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Li Lei
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Takuya Yamamoto
- Department of Life Science Frontiers, CiRA, Kyoto University, Kyoto, 606-8507, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, 606-8501, Japan
- AMED-CREST, AMED 1-7-1 Otemachi, Chiyodaku, Tokyo, 100-0004, Japan
- Medical-Risk Avoidance Based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto, 606-8507, Japan
| | - Akira Nishiyama
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Kenji Osafune
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan.
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Anderson SE, Longbotham JE, O'Kane PT, Ugur FS, Fujimori DG, Mrksich M. Exploring the Ligand Preferences of the PHD1 Domain of Histone Demethylase KDM5A Reveals Tolerance for Modifications of the Q5 Residue of Histone 3. ACS Chem Biol 2021; 16:205-213. [PMID: 33314922 PMCID: PMC8168426 DOI: 10.1021/acschembio.0c00891] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Understanding the ligand preferences of epigenetic reader domains enables identification of modification states of chromatin with which these domains associate and can yield insight into recruitment and catalysis of chromatin-acting complexes. However, thorough exploration of the ligand preferences of reader domains is hindered by the limitations of traditional protein-ligand binding assays. Here, we evaluate the binding preferences of the PHD1 domain of histone demethylase KDM5A using the protein interaction by SAMDI (PI-SAMDI) assay, which measures protein-ligand binding in a high-throughput and sensitive manner via binding-induced enhancement in the activity of a reporter enzyme, in combination with fluorescence polarization. The PI-SAMDI assay was validated by confirming its ability to accurately profile the relative binding affinity of a set of well-characterized histone 3 (H3) ligands of PHD1. The assay was then used to assess the affinity of PHD1 for 361 H3 mutant ligands, a select number of which were further characterized by fluorescence polarization. Together, these experiments revealed PHD1's tolerance for H3Q5 mutations, including an unexpected tolerance for aromatic residues in this position. Motivated by this finding, we further demonstrate a high-affinity interaction between PHD1 and recently identified Q5-serotonylated H3. This work yields interesting insights into permissible PHD1-H3 interactions and demonstrates the value of interfacing PI-SAMDI and fluorescence polarization in investigations of protein-ligand binding.
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Affiliation(s)
- Sarah E Anderson
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - James E Longbotham
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, California 94158, United States
| | - Patrick T O'Kane
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Fatima S Ugur
- Chemistry and Chemical Biology Graduate Program, University of California San Francisco, San Francisco, California 94158, United States
| | - Danica Galonić Fujimori
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, California 94158, United States
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94158, United States
- Quantitative Biosciences Institute, University of California San Francisco, San Francisco, California 94158, United States
| | - Milan Mrksich
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Cell and Developmental Biology, Northwestern University, Evanston, Illinois 60208, United States
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Abstract
The gut microbiota is essential for human health. Microbial supply of short-chain fatty acids (SCFAs), particularly butyrate, is a well-established contributor to gut homeostasis and disease resistance. Reaching millimolar luminal concentrations, butyrate is sequestered and utilized in the colon as the favored energy source for intestinal epithelia. Given the steep oxygen gradient across the anoxic lumen and the highly oxygenated lamina propria, the colon provides a particularly interesting environment to study oxygen sensing. Previous studies have shown that the transcription factor hypoxia-inducible factor (HIF) is stabilized in healthy colonic epithelia. Here we show that butyrate directly inhibits HIF prolyl hydroxylases (PHDs) to stabilize HIF. We find that butyrate stabilizes HIF in vitro despite eliminating β-oxidation and resultant oxygen consumption. Using recombinant PHD protein in combination with nuclear magnetic resonance and enzymatic biochemical assays, we identify butyrate to bind and function as a unique, noncompetitive inhibitor of PHDs relative to other SCFAs. Butyrate inhibited PHD with a noncompetitive Ki of 5.3 ± 0.5 mM, a physiologically relevant concentration. We also confirm that microbiota-derived butyrate is necessary to stabilize HIF in mice colonic tissue through antibiotic-induced butyrate depletion and reconstitution experiments. Our results suggest that the co-evolution of mammals and mutualistic microbiota has selected for butyrate to impact a critical gene regulation pathway that can be extended beyond the mammalian gut. As PHDs are a major target for drug development in the stabilization of HIF, butyrate holds great potential as a well-tolerated endogenous inhibitor with far-reaching therapeutic impact.
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Affiliation(s)
- Ruth X. Wang
- Department of Medicine, Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- School of Medicine, Medical Scientist Training Program, University of Colorado, Aurora, CO, USA
| | - Morkos A. Henen
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Pharmaceutical Organic Chemistry, Mansoura University, Mansoura, Egypt
| | - J. Scott Lee
- Department of Medicine, Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Beat Vögeli
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Sean P. Colgan
- Department of Medicine, Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Minuzzi LG, da Conceição LR, Muñoz VR, Vieira RFL, Gaspar RC, da Silva ASR, Cintra DE, Pereira de Moura L, Ropelle ER, Teixeira AM, Pauli JR. Effects of short-term physical training on the interleukin-15 signalling pathway and glucose tolerance in aged rats. Cytokine 2021; 137:155306. [PMID: 33010727 DOI: 10.1016/j.cyto.2020.155306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/10/2020] [Accepted: 09/18/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Interleukin-15 (IL-15) is a myokine that has been proposed to modulate skeletal muscle and adipose tissue mass, as well as insulin sensitivity. However, the evidence suggesting a role for IL-15 in improving whole-body insulin sensitivity and decreasing adiposity comes mainly from studies using supraphysiological levels of this cytokine. This study examined the effect of a short-term exercise training protocol on the protein content of IL-15, it's signaling pathway, and glucose tolerance in aged rats. METHODS Fourteen Wistar rats were divided into Young Sedentary (Young, n = 4); Old Sedentary (Old, n = 5); Old Exercise (Old.Exe, n = 5) groups. The animals from the exercised group were submitted to a short-term physical exercise protocol for five days. At the end of physical training and after 16 h of the last exercise session, the animals were euthanized, and tissue collection was done. RESULTS Physical exercise decreased epididymal and mesenteric fat mass and promoted positive effects on glucose tolerance and insulin sensitivity. Muscle IL-15 protein levels were not changed following the short-term physical exercise training with no alterations in the post-exercise IL-15-JAK/STAT signaling pathway. We found a tendency to increased HIF1α and a significant increase in its regulator, PHD2, in the skeletal muscle after exercise. CONCLUSION The elderly rats submitted to short-term aerobic physical training did not present skeletal muscle alteration in the protein content of the IL-15 and IL-15-JAK/STAT signaling pathway. However, short-term aerobic physical training was able to modulate the expression of HIF1α and its regulator PHD2, suggesting an essential role of these proteins in improving post-exercise glucose tolerance and insulin sensitivity in elderly rats.
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Affiliation(s)
- Luciele Guerra Minuzzi
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; University of Coimbra Research, Center for Sport and Physical Activity, Faculty of Sport Sciences and Physical Education, Coimbra, Portugal; Exercise and Immunometabolism Research Group, Post-Graduation Program in Movement Sciences, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil.
| | - Luciana Renata da Conceição
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Vitor Rosetto Muñoz
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Renan Fudoli Lins Vieira
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Rafael Calais Gaspar
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Adelino S R da Silva
- Post-graduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, USP, Ribeirão Preto, São Paulo, Brazil
| | - Dennys Esper Cintra
- Laboratory of Nutritional Genomics (LabGeN), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; Laboratory of Cell Signalling, Obesity and Comorbidities Research Center (OCRC), University of Campinas, Campinas, SP, Brazil
| | - Leandro Pereira de Moura
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; Laboratory of Cell Signalling, Obesity and Comorbidities Research Center (OCRC), University of Campinas, Campinas, SP, Brazil; CEPECE - Center of Research in Sport Sciences. School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Eduardo Rochete Ropelle
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; Laboratory of Cell Signalling, Obesity and Comorbidities Research Center (OCRC), University of Campinas, Campinas, SP, Brazil; CEPECE - Center of Research in Sport Sciences. School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Ana Maria Teixeira
- University of Coimbra Research, Center for Sport and Physical Activity, Faculty of Sport Sciences and Physical Education, Coimbra, Portugal
| | - José Rodrigo Pauli
- Laboratory of Molecular Biology of Exercise (LaBMEx), University of Campinas (UNICAMP), Limeira, São Paulo, Brazil; Laboratory of Cell Signalling, Obesity and Comorbidities Research Center (OCRC), University of Campinas, Campinas, SP, Brazil; CEPECE - Center of Research in Sport Sciences. School of Applied Sciences, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil.
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Xia X, Wang S, Ni B, Xing S, Cao H, Zhang Z, Yu F, Zhao E, Zhao G. Hypoxic gastric cancer-derived exosomes promote progression and metastasis via MiR-301a-3p/PHD3/HIF-1α positive feedback loop. Oncogene 2020; 39:6231-6244. [PMID: 32826951 DOI: 10.1038/s41388-020-01425-6] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 07/19/2020] [Accepted: 08/10/2020] [Indexed: 12/22/2022]
Abstract
Hypoxic tumor microenvironment(TME) is a universal feature in solid carcinoma and is associated with unfavorable prognosis. Tumor-derived exosomes are now significantly implicating in mediating cellular communication and interactions in TME. The aim of this study was to identify exosomal miR-301a-3p involved in gastric cancer(GC) progression and metastasis. Here, we found hypoxia promote GC exosomes release and miR-301a-3p expression in an HIF-1α-dependent manner. In hypoxic TME, enriched miR-301a-3p could be transmitted between GC cells via exosomes and then contributed to inhibit HIF-1α degradation through targeting PHD3, that were capable to hydroxylate HIF-1α subunits to ubiquitinate degradation. This synergistical positive feedback loop between HIF-1α and miR-301a-3p facilitated GC proliferation, invasion, migration, and epithelial-mesenchymal transition. In clinical samples, we further discovered circulating exosomal miR-301a-3p in serum was positively related with peritoneal metastasis. Collectively, these data indicate that GC cells could generate miR-301a-3p-rich exosomes in the hypoxic TME, which then help to HIF-1α accumulation and promote GC malignant behaviors and metastasis. Exosomal miR-301a-3p/HIF-1α signaling axis may serve as a promising predictor and potential therapeutic target of GC with metastasis.
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Affiliation(s)
- Xiang Xia
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shuchang Wang
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bo Ni
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shunpeng Xing
- Department of Critical Care, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hui Cao
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zizhen Zhang
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fengrong Yu
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Enhao Zhao
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Gang Zhao
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Lee SB, Ko A, Oh YT, Shi P, D'Angelo F, Frangaj B, Koller A, Chen EI, Cardozo T, Iavarone A, Lasorella A. Proline Hydroxylation Primes Protein Kinases for Autophosphorylation and Activation. Mol Cell 2020; 79:376-389.e8. [PMID: 32640193 PMCID: PMC7849370 DOI: 10.1016/j.molcel.2020.06.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 03/25/2020] [Accepted: 06/11/2020] [Indexed: 02/07/2023]
Abstract
Activation of dual-specificity tyrosine-phosphorylation-regulated kinases 1A and 1B (DYRK1A and DYRK1B) requires prolyl hydroxylation by PHD1 prolyl hydroxylase. Prolyl hydroxylation of DYRK1 initiates a cascade of events leading to the release of molecular constraints on von Hippel-Lindau (VHL) ubiquitin ligase tumor suppressor function. However, the proline residue of DYRK1 targeted by hydroxylation and the role of prolyl hydroxylation in tyrosine autophosphorylation of DYRK1 are unknown. We found that a highly conserved proline in the CMGC insert of the DYRK1 kinase domain is hydroxylated by PHD1, and this event precedes tyrosine autophosphorylation. Mutation of the hydroxylation acceptor proline precludes tyrosine autophosphorylation and folding of DYRK1, resulting in a kinase unable to preserve VHL function and lacking glioma suppression activity. The consensus proline sequence is shared by most CMGC kinases, and prolyl hydroxylation is essential for catalytic activation. Thus, formation of prolyl-hydroxylated intermediates is a novel mechanism of kinase maturation and likely a general mechanism of regulation of CMGC kinases in eukaryotes.
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Affiliation(s)
- Sang Bae Lee
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Aram Ko
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Young Taek Oh
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Peiguo Shi
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Fulvio D'Angelo
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Brulinda Frangaj
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - Antonius Koller
- Proteomics Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Emily I Chen
- Proteomics Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Timothy Cardozo
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, NYU Langone Health, New York, NY 10016, USA
| | - Antonio Iavarone
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA; Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA; Department of Neurology, Columbia University Medical Center, New York, NY 10032, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA.
| | - Anna Lasorella
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA; Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA; Department of Pediatrics, Columbia University Medical Center, New York, NY 10032, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA.
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Yoon H, Spinelli JB, Zaganjor E, Wong SJ, German NJ, Randall EC, Dean A, Clermont A, Paulo JA, Garcia D, Li H, Rombold O, Agar NYR, Goodyear LJ, Shaw RJ, Gygi SP, Auwerx J, Haigis MC. PHD3 Loss Promotes Exercise Capacity and Fat Oxidation in Skeletal Muscle. Cell Metab 2020; 32:215-228.e7. [PMID: 32663458 PMCID: PMC8065255 DOI: 10.1016/j.cmet.2020.06.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 10/04/2019] [Accepted: 06/21/2020] [Indexed: 12/14/2022]
Abstract
Rapid alterations in cellular metabolism allow tissues to maintain homeostasis during changes in energy availability. The central metabolic regulator acetyl-CoA carboxylase 2 (ACC2) is robustly phosphorylated during cellular energy stress by AMP-activated protein kinase (AMPK) to relieve its suppression of fat oxidation. While ACC2 can also be hydroxylated by prolyl hydroxylase 3 (PHD3), the physiological consequence thereof is poorly understood. We find that ACC2 phosphorylation and hydroxylation occur in an inverse fashion. ACC2 hydroxylation occurs in conditions of high energy and represses fatty acid oxidation. PHD3-null mice demonstrate loss of ACC2 hydroxylation in heart and skeletal muscle and display elevated fatty acid oxidation. Whole body or skeletal muscle-specific PHD3 loss enhances exercise capacity during an endurance exercise challenge. In sum, these data identify an unexpected link between AMPK and PHD3, and a role for PHD3 in acute exercise endurance capacity and skeletal muscle metabolism.
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Affiliation(s)
- Haejin Yoon
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Jessica B Spinelli
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Elma Zaganjor
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Samantha J Wong
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Natalie J German
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Elizabeth C Randall
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Boston, MA, USA
| | - Afsah Dean
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA, USA
| | - Allen Clermont
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA, USA
| | - Joao A Paulo
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Daniel Garcia
- The Salk Institute for Biological Studies, 10010 N. Torrey Pines Road, La Jolla, CA, USA
| | - Hao Li
- Laboratory of Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland
| | - Olivia Rombold
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Nathalie Y R Agar
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Boston, MA, USA; Departments of Neurosurgery and Cancer Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Laurie J Goodyear
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Boston, MA, USA
| | - Reuben J Shaw
- The Salk Institute for Biological Studies, 10010 N. Torrey Pines Road, La Jolla, CA, USA
| | - Steven P Gygi
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Johan Auwerx
- Laboratory of Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland
| | - Marcia C Haigis
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA.
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Han F, Wu G, Han S, Li Z, Jia Y, Bai L, Li X, Wang K, Yang F, Zhang J, Wang X, Guan H, Linlin S, Han J, Hu D. Hypoxia-inducible factor prolyl-hydroxylase inhibitor roxadustat (FG-4592) alleviates sepsis-induced acute lung injury. Respir Physiol Neurobiol 2020; 281:103506. [PMID: 32726645 DOI: 10.1016/j.resp.2020.103506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/07/2020] [Accepted: 07/19/2020] [Indexed: 12/17/2022]
Abstract
Acute lung injury (ALI) is one of the most severe outcomes of sepsis which still waiting for effective treatment method. Roxadustat (FG-4592) which is often used for treatment of anemia in patients with chronic kidney disease (CKD), its affection on LPS-induced ALI haven't been evaluated. MH-S and MLE-12 cell injury and ALI mouse model was induced LPS. Several assays were used to explore the role of FG-4592 in reducing the damage caused by LPS. FG-4592 treatment significantly upregulated HIF-1α and HO-1 and strikingly attenuated inflammation in vivo and in vitro. Furthermore, septic mice overexpressing HIF-1α had high level of survival rate and lower expression of inflammatory factors while down-regulation can enhance the damage of LPS. HIF-1α has a protective effect on acute lung injury in LPS induced septic mice. FG-4592 treatment remarkably ameliorated the LPS-induced lung injury through the stabilization of HIF-1α. Besides the role in treating CKD anemia, the clinical use of FG-4592 also might be extended to ALI.
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Affiliation(s)
- Fu Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Shichao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Zhenzhen Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Lu Bai
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Xiaoqiang Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Kejia Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Fangfang Yang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Jian Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Xujie Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Hao Guan
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Su Linlin
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China
| | - Juntao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China.
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, China.
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Dey A, Prabhudesai S, Zhang Y, Rao G, Thirugnanam K, Hossen MN, Dwivedi SKD, Ramchandran R, Mukherjee P, Bhattacharya R. Cystathione β-synthase regulates HIF-1α stability through persulfidation of PHD2. Sci Adv 2020; 6:eaaz8534. [PMID: 32937467 PMCID: PMC7458453 DOI: 10.1126/sciadv.aaz8534] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 05/20/2020] [Indexed: 05/10/2023]
Abstract
The stringent expression of the hypoxia inducible factor-1α (HIF-1α) is critical to a variety of pathophysiological conditions. We reveal that, in normoxia, enzymatic action of cystathionine β-synthase (CBS) produces H2S, which persulfidates prolyl hydroxylase 2 (PHD2) at residues Cys21 and Cys33 (zinc finger motif), augmenting prolyl hydroxylase activity. Depleting endogenous H2S either by hypoxia or by inhibiting CBS via chemical or genetic means reduces persulfidation of PHD2 and inhibits activity, preventing hydroxylation of HIF-1α, resulting in stabilization. Our in vitro findings are further supported by the depletion of CBS in the zebrafish model that exhibits axis defects and abnormal intersegmental vessels. Exogenous H2S supplementation rescues both in vitro and in vivo phenotypes. We have identified the persulfidated residues and defined their functional significance in regulating the activity of PHD2 via point mutations. Thus, the CBS/H2S/PHD2 axis may provide therapeutic opportunities for pathologies associated with HIF-1α dysregulation in chronic diseases.
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Affiliation(s)
- Anindya Dey
- Department of Obstetrics and Gynecology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
| | - Shubhangi Prabhudesai
- Department of Pediatrics, Department of Obstetrics and Gynecology, Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Yushan Zhang
- Department of Pathology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
| | - Geeta Rao
- Department of Pathology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
| | - Karthikeyan Thirugnanam
- Department of Pediatrics, Department of Obstetrics and Gynecology, Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Md Nazir Hossen
- Department of Pathology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
| | - Shailendra Kumar Dhar Dwivedi
- Department of Obstetrics and Gynecology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
| | - Ramani Ramchandran
- Department of Pediatrics, Department of Obstetrics and Gynecology, Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Priyabrata Mukherjee
- Department of Pathology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA.
| | - Resham Bhattacharya
- Department of Obstetrics and Gynecology, Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA.
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Cheng L, Xing Z, Zhang P, Xu W. Long non-coding RNA LINC00662 promotes proliferation and migration of breast cancer cells via regulating the miR-497-5p/EglN2 axis. Acta Biochim Pol 2020; 67:229-237. [PMID: 32558530 DOI: 10.18388/abp.2020_5203] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 03/25/2020] [Indexed: 11/10/2022]
Abstract
Previous reports indicated that long noncoding RNA 662 (LINC00662) plays a crucial role in several human cancers. Here, we studied the expression pattern of LINC00662 and explored its function in human breast cancer. The expression level of LINC00662 was determined in human breast cancer cell lines and tissues by real-time quantitative polymerase chain reaction (RT-qPCR). Cytoplasmic and nuclear RNA from MDA-MB-157 cells were extracted to analyze the subcellular location of LINC00662. Moreover, the MTT assay, wound-healing assay, colony-forming assay and transwell assay were employed in MDA-MB-157 cells to detect the effect of LINC00662 on cell apoptosis, invasion, migration and proliferation, respectively. LINC00662-specific miRNA and miRNA-gene axis were examined in a dual-luciferase reporter assay and Western blot. We found that LINC00662 was overexpressed in both breast cancer cell lines and tissue compared to normal breast cell lines and healthy breast tissue. Analysis of subcellular localization revealed that LINC00662 was mainly found in the cytoplasm. Furthermore, LINC00662 silencing reduced cell viability and inhibited the proliferation, migration and invasion of MDA-MB-157 cells. Bioinformatics analysis predicted that LNC00662 binds to miR-497-5p. A series of studies confirmed that LINC00662 directly interacted with miR-497-5p and downregulated its expression in MDA-MB-157 cells. MiR-497-5p knockdown significantly reversed the inhibitory effect of shLINC00662. Moreover, egl-9 family hypoxia inducible factor 2 (EglN2) was verified as a target of miR-497-5p. Overall, our results demonstrated that overexpression of LINC00662 accelerated the malignant growth of breast cancer cells via sponging miR-497-5p and upregulating EglN2 expression, and indicate that targeting LINC00662 may represent a novel strategy for breast cancer therapy.
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Affiliation(s)
- Long Cheng
- Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu City, Anhui Province, 241001, China
| | - Zihe Xing
- Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu City, Anhui Province, 241001, China
| | - Peng Zhang
- Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu City, Anhui Province, 241001, China
| | - Wuqin Xu
- Department of Pathology, The First Affiliated Hospital of Wannan Medical College, Wuhu City, Anhui Province, 241001, China
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Blersch J, Francisco V, Rebelo C, Jiménez-Balsa A, Antunes H, Pinto S, Simões S, Rai A, Ferreira L. A light-triggerable formulation to control the stability of pro-angiogenic transcription factor hypoxia inducible factor-1α (HIF-1α). Nanoscale 2020; 12:9935-9942. [PMID: 32352454 DOI: 10.1039/c9nr10503d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The control of vascular remodeling mediated by transcription factor HIF-1α is critical in the treatment of several diseases including cancer, retinopathies, chronic wounds, and ischemic heart disease, among others. Gene silencing using a small interfering RNA (siRNA) is a promising therapeutic strategy to regulate HIF-1α; however, the delivery systems developed so far have limited endothelial targeting and efficiency. Herein, we have synthesized a light-triggerable polymeric nanoparticle (NP) library composed of 110 formulations which showed variable morphology, charge and disassembly rates after UV exposure. More than 35% of the formulations of the library were more efficient in gene knockdown than the siRNA delivered by a commercial transfection agent (lipofectamine RNAiMAX). The most efficient siRNA delivery formulations were tested against different cell types to identify one with preferential targeting to endothelial cells. Using a two-step methodology, we have identified a formulation that shows exquisite targeting to endothelial cells and is able to deliver more efficiently the siRNA that modulates HIF-1α than commercial transfection agents. Overall, the strategy reported here increases the specificity for tissue regulation and the efficiency for the intracellular delivery of siRNAs.
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Affiliation(s)
- Josephine Blersch
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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Laitakari A, Tapio J, Mäkelä KA, Herzig KH, Dengler F, Gylling H, Walkinshaw G, Myllyharju J, Dimova EY, Serpi R, Koivunen P. HIF-P4H-2 inhibition enhances intestinal fructose metabolism and induces thermogenesis protecting against NAFLD. J Mol Med (Berl) 2020; 98:719-731. [PMID: 32296880 PMCID: PMC7220983 DOI: 10.1007/s00109-020-01903-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/06/2020] [Accepted: 03/24/2020] [Indexed: 02/07/2023]
Abstract
Abstract Non-alcoholic fatty liver disease (NAFLD) parallels the global obesity epidemic with unmet therapeutic needs. We investigated whether inhibition of hypoxia-inducible factor prolyl 4-hydroxylase-2 (HIF-P4H-2), a key cellular oxygen sensor whose inhibition stabilizes HIF, would protect from NAFLD by subjecting HIF-P4H-2-deficient (Hif-p4h-2gt/gt) mice to a high-fat, high-fructose (HFHF) or high-fat, methionine-choline-deficient (HF-MCD) diet. On both diets, the Hif-p4h-2gt/gt mice gained less weight and had less white adipose tissue (WAT) and its inflammation, lower serum cholesterol levels, and lighter livers with less steatosis and lower serum ALT levels than the wild type (WT). The intake of fructose in majority of the Hif-p4h-2gt/gt tissues, including the liver, was 15–35% less than in the WT. We found upregulation of the key fructose transporter and metabolizing enzyme mRNAs, Slc2a2, Khka, and Khkc, and higher ketohexokinase activity in the Hif-p4h-2gt/gt small intestine relative to the WT, suggesting enhanced metabolism of fructose in the former. On the HF-MCD diet, the Hif-p4h-2gt/gt mice showed more browning of the WAT and increased thermogenesis. A pharmacological pan-HIF-P4H inhibitor protected WT mice on both diets against obesity, metabolic dysfunction, and liver damage. These data suggest that HIF-P4H-2 inhibition could be studied as a novel, comprehensive treatment strategy for NAFLD. Key messages • HIF-P4H-2 inhibition enhances intestinal fructose metabolism protecting the liver. • HIF-P4H-2 inhibition downregulates hepatic lipogenesis. • Induced browning of WAT and increased thermogenesis can also mediate protection. • HIF-P4H-2 inhibition offers a novel, comprehensive treatment strategy for NAFLD. Electronic supplementary material The online version of this article (10.1007/s00109-020-01903-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anna Laitakari
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland
| | - Joona Tapio
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland
| | - Kari A Mäkelä
- Research Unit of Biomedicine, Biocenter Oulu, Medical Research Center and University Hospital, Oulu, Finland
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine, Biocenter Oulu, Medical Research Center and University Hospital, Oulu, Finland
- Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Helena Gylling
- Internal Medicine, University of Helsinki and Helsinki University Hospital, 00029 HUS, Helsinki, Finland
| | | | - Johanna Myllyharju
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland
| | - Elitsa Y Dimova
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland
| | - Raisa Serpi
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland
| | - Peppi Koivunen
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, Oulu Center for Cell-Matrix Research, University of Oulu, Aapistie 7C, FIN-90014, Oulu, Finland.
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Ghanim H, Abuaysheh S, Hejna J, Green K, Batra M, Makdissi A, Chaudhuri A, Dandona P. Dapagliflozin Suppresses Hepcidin And Increases Erythropoiesis. J Clin Endocrinol Metab 2020; 105:5733667. [PMID: 32044999 DOI: 10.1210/clinem/dgaa057] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 02/10/2020] [Indexed: 02/07/2023]
Abstract
CONTEXT Dapagliflozin and other SGLT2 inhibitors are known to increase hematocrit, possibly due to its diuretic effects and hemoconcentration. OBJECTIVE Since type 2 diabetes is a proinflammatory state and since hepcidin, a known suppressor of erythropoiesis, is increased in proinflammatory states, we investigated the possibility that dapagliflozin suppresses hepcidin concentrations and thus increases erythropoiesis. DESIGN Prospective, randomized, and placebo-controlled study. SETTING Single endocrinology center. PATIENTS Fifty-two obese type 2 diabetes patients. INTERVENTION Patients were randomized (1:1) to either dapagliflozin (10 mg daily) or placebo for 12 weeks. Blood samples were collected before and after treatments and serum, plasma, and mononuclear cells (MNC) were prepared. MAIN OUTCOME MEASURE Hepcidin and other hematopoietic factors. RESULTS Following dapagliflozin treatment, there was a significant fall in HbA1c and a significant increase in hemoglobin concentration and hematocrit. Dapagliflozin treatment significantly reduced circulating hepcidin and ferritin concentrations while causing a significant increase in levels of the hepcidin inhibitor, erythroferrone, and a transient increase in erythropoietin. Additionally, dapagliflozin increased plasma transferrin levels and expression of transferrin receptors 1 and 2 in MNC, while there was no change in the expression of the iron cellular transporter, ferroportin. Dapagliflozin treatment also caused a decrease in hypoxia-induced factor-1α expression in MNC while it increased the expression of its inhibitor, prolyl hydroxylase-2. There were no significant changes in any of these indices in the placebo group. CONCLUSIONS We conclude that dapagliflozin increases erythropoiesis and hematocrit through mechanisms that involve the suppression of hepcidin and the modulation of other iron regulatory proteins.
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Affiliation(s)
- Husam Ghanim
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Sanaa Abuaysheh
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Jeanne Hejna
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Kelly Green
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Manav Batra
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Antione Makdissi
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Ajay Chaudhuri
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
| | - Paresh Dandona
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, New York
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50
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Guan R, Wang J, Li D, Li Z, Liu H, Ding M, Cai Z, Liang X, Yang Q, Long Z, Chen L, Liu W, Sun D, Yao H, Lu W. Hydrogen sulfide inhibits cigarette smoke-induced inflammation and injury in alveolar epithelial cells by suppressing PHD2/HIF-1α/MAPK signaling pathway. Int Immunopharmacol 2020; 81:105979. [PMID: 31771816 DOI: 10.1016/j.intimp.2019.105979] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/28/2019] [Accepted: 10/13/2019] [Indexed: 02/07/2023]
Abstract
Chronic obstructive pulmonary fibrosis (COPD) is a chronic and fatal lung disease with few treatment options. Sodium hydrosulfide (NaHS), a donor of hydrogen sulfide (H2S), was found to alleviate cigarette smoke (CS)-induced emphysema in mice, however, the underlying mechanisms have not yet been clarified. In this study, we investigated its effects on COPD in a CS-induced mouse model in vivo and in cigarette smoke extract (CSE)-stimulated alveolar epithelial A549 cells in vitro. The results showed that NaHS not only relieved emphysema, but also improved pulmonary function in CS-exposed mice. NaHS significantly increased the expressions of tight junction proteins (i.e., ZO-1, Occludin and claudin-1), and reduced apoptosis and secretion of pro-inflammatory cytokines (i.e., TNF-α, IL-6 and IL-1β) in CS-exposed mouse lungs and CSE-incubated A549 cells, indicating H2S inhibits CS-induced inflammation, injury and apoptosis in alveolar epithelial cells. NaHS also upregulated prolyl hydroxylase (PHD)2, and suppressed hypoxia-inducible factor (HIF)-1α expression in vivo and in vitro, suggesting H2S inhibits CS-induced activation of PHD2/HIF-1α axis. Moreover, NaHS inhibited CS-induced phosphorylation of ERK, JNK and p38 MAPK in vivo and in vitro, and treatment with their inhibitors reversed CSE-induced ZO-1 expression and inflammation in A549 cells. These results suggest that NaHS may prevent emphysema via the suppression of PHD2/HIF-1α/MAPK signaling pathway, and subsequently inhibition of inflammation, epithelial cell injury and apoptosis, and may be a novel strategy for the treatment of COPD.
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Affiliation(s)
- Ruijuan Guan
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jian Wang
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Defu Li
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China; The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ziying Li
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Hanwei Liu
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Mingjing Ding
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China; Departments of Respiratory and Critical Diseases, Inner Mongolia Autonomous Region People's Hospital, Hohhot, China
| | - Zhou Cai
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xue Liang
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China; The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qian Yang
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhen Long
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Lingzhu Chen
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wei Liu
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Dejun Sun
- Departments of Respiratory and Critical Diseases, Inner Mongolia Autonomous Region People's Hospital, Hohhot, China
| | - Hongwei Yao
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
| | - Wenju Lu
- State Key Laboratory of Respiratory Diseases, Guangdong Key Laboratory of Vascular Diseases, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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