201
|
Tang J, Wu Z, Wang X, Hou Y, Bai Y, Tian Y. Hypoxia-Regulated lncRNA USP2-AS1 Drives Head and Neck Squamous Cell Carcinoma Progression. Cells 2022; 11:3407. [PMID: 36359803 PMCID: PMC9655520 DOI: 10.3390/cells11213407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/16/2022] [Accepted: 10/24/2022] [Indexed: 07/30/2023] Open
Abstract
The role of hypoxia-regulated long non-coding RNA (lncRNA) in the development of head and neck squamous cell carcinoma (HNSCC) remains to be elucidated. In the current study, we initially screened hypoxia-regulated lncRNA in HNSCC cells by RNA-seq, before focusing on the rarely annotated lncRNA USP2 antisense RNA 1 (USP2-AS1). We determined that USP2-AS1 is a direct target of HIF1α and is remarkably elevated in HNSCC compared with matched normal tissues. Patients with a higher level of USP2-AS1 suffered a poor prognosis. Next, loss- and gain-of-function assays revealed that USP2-AS1 promoted cell proliferation and invasion in vitro and in vivo. Mechanically, RNA pulldown and LC-MS/MS demonstrated that the E3 ligase DDB1- and CUL4-associated factor 13 (DCAF13) is one of the binding partners to USP2-AS1 in HNSCC cells. In addition, we assumed that USP2-AS1 regulates the activity of DCAF13 by targeting its substrate ATR. Moreover, the knockdown of DCAF13 restored the elevated cell proliferation and growth levels achieved by USP2-AS1 overexpression. Altogether, we found that lncRNA USP2-AS1 functions as a HIF1α-regulated oncogenic lncRNA and promotes HNSCC cell proliferation and growth by interacting and modulating the activity of DCAF13.
Collapse
Affiliation(s)
- Jianmin Tang
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
- Department of Radiation Oncology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No.160 Pujian Road, Shanghai 200127, China
| | - Zheng Wu
- Department of Radiation Oncology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No.160 Pujian Road, Shanghai 200127, China
| | - Xiaohang Wang
- Department of Radiation Oncology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No.160 Pujian Road, Shanghai 200127, China
| | - Yanli Hou
- Department of Radiation Oncology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No.160 Pujian Road, Shanghai 200127, China
| | - Yongrui Bai
- Department of Radiation Oncology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No.160 Pujian Road, Shanghai 200127, China
| | - Ye Tian
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
| |
Collapse
|
202
|
Oe Y, Takahashi N. Tissue Factor, Thrombosis, and Chronic Kidney Disease. Biomedicines 2022; 10:2737. [PMID: 36359257 PMCID: PMC9687479 DOI: 10.3390/biomedicines10112737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/20/2022] [Accepted: 10/24/2022] [Indexed: 11/14/2023] Open
Abstract
Coagulation abnormalities are common in chronic kidney disease (CKD). Tissue factor (TF, factor III) is a master regulator of the extrinsic coagulation system, activating downstream coagulation proteases, such as factor Xa and thrombin, and promoting fibrin formation. TF and coagulation proteases also activate protease-activated receptors (PARs) and are implicated in various organ injuries. Recent studies have shown the mechanisms by which thrombotic tendency is increased under CKD-specific conditions. Uremic toxins, such as indoxyl sulfate and kynurenine, are accumulated in CKD and activate TF and coagulation; in addition, the TF-coagulation protease-PAR pathway enhances inflammation and fibrosis, thereby exacerbating renal injury. Herein, we review the recent research studies to understand the role of TF in increasing the thrombotic risk and CKD progression.
Collapse
Affiliation(s)
- Yuji Oe
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan
- Division of Nephrology and Hypertension, Department of Medicine, University of California San Diego, La Jolla, CA 92161, USA
- VA San Diego Healthcare System, San Diego, CA 92161, USA
| | - Nobuyuki Takahashi
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences & Faculty of Pharmaceutical Sciences, Sendai 980-8578, Japan
| |
Collapse
|
203
|
Siwicka-Gieroba D, Robba C, Gołacki J, Badenes R, Dabrowski W. Cerebral Oxygen Delivery and Consumption in Brain-Injured Patients. J Pers Med 2022; 12:1763. [PMID: 36573716 PMCID: PMC9698645 DOI: 10.3390/jpm12111763] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 12/30/2022] Open
Abstract
Organism survival depends on oxygen delivery and utilization to maintain the balance of energy and toxic oxidants production. This regulation is crucial to the brain, especially after acute injuries. Secondary insults after brain damage may include impaired cerebral metabolism, ischemia, intracranial hypertension and oxygen concentration disturbances such as hypoxia or hyperoxia. Recent data highlight the important role of clinical protocols in improving oxygen delivery and resulting in lower mortality in brain-injured patients. Clinical protocols guide the rules for oxygen supplementation based on physiological processes such as elevation of oxygen supply (by mean arterial pressure (MAP) and intracranial pressure (ICP) modulation, cerebral vasoreactivity, oxygen capacity) and reduction of oxygen demand (by pharmacological sedation and coma or hypothermia). The aim of this review is to discuss oxygen metabolism in the brain under different conditions.
Collapse
Affiliation(s)
- Dorota Siwicka-Gieroba
- Department of Anaesthesiology and Intensive Care, Medical University in Lublin, 20-954 Lublin, Poland
| | - Chiara Robba
- Department of Anesthesiology and Intensive Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, 16132 Genoa, Italy
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, 16132 Genoa, Italy
| | - Jakub Gołacki
- Department of Anaesthesiology and Intensive Care, Medical University in Lublin, 20-954 Lublin, Poland
| | - Rafael Badenes
- Department of Anesthesiology and Surgical-Trauma Intensive Care, Hospital Clinic Universitari, University of Valencia, 46010 Valencia, Spain
| | - Wojciech Dabrowski
- Department of Anaesthesiology and Intensive Care, Medical University in Lublin, 20-954 Lublin, Poland
| |
Collapse
|
204
|
Tiwari R, Bommi PV, Gao P, Schipma MJ, Zhou Y, Quaggin SE, Chandel NS, Kapitsinou PP. Chemical inhibition of oxygen-sensing prolyl hydroxylases impairs angiogenic competence of human vascular endothelium through metabolic reprogramming. iScience 2022; 25:105086. [PMID: 36157579 PMCID: PMC9494243 DOI: 10.1016/j.isci.2022.105086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/24/2022] [Accepted: 08/31/2022] [Indexed: 11/18/2022] Open
Abstract
Endothelial cell (EC) metabolism has emerged as a driver of angiogenesis. While hypoxia inactivates the oxygen sensors prolyl-4 hydroxylase domain-containing proteins 1-3 (PHD1-3) and stimulates angiogenesis, the effects of PHDs on EC functions remain poorly defined. Here, we investigated the impact of chemical PHD inhibition by dimethyloxalylglycine (DMOG) on angiogenic competence and metabolism of human vascular ECs. DMOG reduced EC proliferation, migration, and tube formation capacities, responses that were associated with an unfavorable metabolic reprogramming. While glycolytic genes were induced, multiple genes encoding sub-units of mitochondrial complex I were suppressed with concurrent decline in nicotinamide adenine dinucleotide (NAD+) levels. Importantly, the DMOG-induced defects in EC migration could be partially rescued by augmenting NAD+ levels through nicotinamide riboside or citrate supplementation. In summary, by integrating functional assays, transcriptomics, and metabolomics, we provide insights into the effects of PHD inhibition on angiogenic competence and metabolism of human vascular ECs.
Collapse
Affiliation(s)
- Ratnakar Tiwari
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 East Superior Street, SQBRC 8-408, Chicago, 60611 IL, USA
- Division of Nephrology & Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Prashant V. Bommi
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 East Superior Street, SQBRC 8-408, Chicago, 60611 IL, USA
- Division of Nephrology & Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Peng Gao
- Department of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Matthew J. Schipma
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Yalu Zhou
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 East Superior Street, SQBRC 8-408, Chicago, 60611 IL, USA
- Division of Nephrology & Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Susan E. Quaggin
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 East Superior Street, SQBRC 8-408, Chicago, 60611 IL, USA
- Division of Nephrology & Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Navdeep S. Chandel
- Department of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Pinelopi P. Kapitsinou
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 East Superior Street, SQBRC 8-408, Chicago, 60611 IL, USA
- Division of Nephrology & Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| |
Collapse
|
205
|
Pachane BC, Nunes ACC, Cataldi TR, Micocci KC, Moreira BC, Labate CA, Selistre-de-Araujo HS, Altei WF. Small Extracellular Vesicles from Hypoxic Triple-Negative Breast Cancer Cells Induce Oxygen-Dependent Cell Invasion. Int J Mol Sci 2022; 23:ijms232012646. [PMID: 36293503 PMCID: PMC9604480 DOI: 10.3390/ijms232012646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 12/04/2022] Open
Abstract
Hypoxia, a condition of low oxygenation frequently found in triple-negative breast tumors (TNBC), promotes extracellular vesicle (EV) secretion and favors cell invasion, a complex process in which cell morphology is altered, dynamic focal adhesion spots are created, and ECM is remodeled. Here, we investigated the invasive properties triggered by TNBC-derived hypoxic small EV (SEVh) in vitro in cells cultured under hypoxic (1% O2) and normoxic (20% O2) conditions, using phenotypical and proteomic approaches. SEVh characterization demonstrated increased protein abundance and diversity over normoxic SEV (SEVn), with enrichment in pro-invasive pathways. In normoxic cells, SEVh promotes invasive behavior through pro-migratory morphology, invadopodia development, ECM degradation, and matrix metalloprotease (MMP) secretion. The proteome profiling of 20% O2-cultured cells exposed to SEVh determined enrichment in metabolic processes and cell cycles, modulating cell health to escape apoptotic pathways. In hypoxia, SEVh was responsible for proteolytic and catabolic pathway inducement, interfering with integrin availability and gelatinase expression. Overall, our results demonstrate the importance of hypoxic signaling via SEV in tumors for the early establishment of metastasis.
Collapse
Affiliation(s)
- Bianca Cruz Pachane
- Biochemistry and Molecular Biology Laboratory, Department of Physiological Sciences, Universidade Federal de São Carlos—UFSCar, São Carlos 13565-905, SP, Brazil
| | - Ana Carolina Caetano Nunes
- Biochemistry and Molecular Biology Laboratory, Department of Physiological Sciences, Universidade Federal de São Carlos—UFSCar, São Carlos 13565-905, SP, Brazil
| | - Thais Regiani Cataldi
- Max Feffer Plant Genetics Laboratory, Department of Genetics, University of São Paulo—ESALQ, Piracicaba 13418-900, SP, Brazil
| | - Kelli Cristina Micocci
- Center for the Study of Social Insects, São Paulo State University “Julio de Mesquita Filho”, Rio Claro 14884-900, SP, Brazil
| | - Bianca Caruso Moreira
- Biochemistry and Molecular Biology Laboratory, Department of Physiological Sciences, Universidade Federal de São Carlos—UFSCar, São Carlos 13565-905, SP, Brazil
| | - Carlos Alberto Labate
- Max Feffer Plant Genetics Laboratory, Department of Genetics, University of São Paulo—ESALQ, Piracicaba 13418-900, SP, Brazil
| | - Heloisa Sobreiro Selistre-de-Araujo
- Biochemistry and Molecular Biology Laboratory, Department of Physiological Sciences, Universidade Federal de São Carlos—UFSCar, São Carlos 13565-905, SP, Brazil
| | - Wanessa Fernanda Altei
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos 14784-400, SP, Brazil
- Radiation Oncology Department, Barretos Cancer Hospital, Barretos 14784-400, SP, Brazil
- Correspondence:
| |
Collapse
|
206
|
Methyltransferase SMYD3 impairs hypoxia tolerance by augmenting hypoxia signaling independent of its enzymatic activity. J Biol Chem 2022; 298:102633. [PMID: 36273580 PMCID: PMC9692045 DOI: 10.1016/j.jbc.2022.102633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022] Open
Abstract
Hypoxia-inducible factor (HIF)1α, a main transcriptional regulator of the cellular response to hypoxia, also plays important roles in oxygen homeostasis of aerobic organisms, which is regulated by multiple mechanisms. However, the full cellular response to hypoxia has not been elucidated. In this study, we found that expression of SMYD3, a methyltransferase, augments hypoxia signaling independent of its enzymatic activity. We demonstrated SMYD3 binds to and stabilizes HIF1α via co-immunoprecipitation and Western blot assays, leading to the enhancement of HIF1α transcriptional activity under hypoxia conditions. In addition, the stabilization of HIF1α by SMYD3 is independent of HIF1α hydroxylation by prolyl hydroxylases and the intactness of the von Hippel-Lindau ubiquitin ligase complex. Furthermore, we showed SMYD3 induces reactive oxygen species accumulation and promotes hypoxia-induced cell apoptosis. Consistent with these results, we found smyd3-null zebrafish exhibit higher hypoxia tolerance compared to their wildtype siblings. Together, these findings define a novel role of SMYD3 in affecting hypoxia signaling and demonstrate that SMYD3-mediated HIF1α stabilization augments hypoxia signaling, leading to the impairment of hypoxia tolerance.
Collapse
|
207
|
Li W, Zeng W, Jin X, Xu H, Fang X, Ma Z, Cao G, Li R, Ma L. High-Altitude Stress Orchestrates mRNA Expression and Alternative Splicing of Ovarian Follicle Development Genes in Tibetan Sheep. Animals (Basel) 2022; 12:2812. [PMID: 36290198 PMCID: PMC9597790 DOI: 10.3390/ani12202812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 10/01/2023] Open
Abstract
High-altitude stress threatens the survival rate of Tibetan sheep and reduces their fertility. However, the molecular basis of this phenomenon remains elusive. Here, we used RNA-seq to elucidate the transcriptome dynamics of high-altitude stress in Tibetan sheep ovaries. In total, 104 genes were characterized as high-altitude stress-related differentially expressed genes (DEGs). In addition, 36 DEGs contributed to ovarian follicle development, and 28 of them were downregulated under high-altitude stress. In particular, high-altitude stress significantly suppressed the expression of two ovarian lymphatic system marker genes: LYVE1 and ADAMTS-1. Network analysis revealed that luteinizing hormone (LH)/follicle-stimulating hormone (FSH) signaling-related genes, such as EGR1, FKBP5, DUSP1, and FOS, were central regulators in the DEG network, and these genes were also suppressed under high-altitude stress. As a post-transcriptional regulation mechanism, alternative splicing (AS) is ubiquitous in Tibetan sheep. High-altitude stress induced 917 differentially alternative splicing (DAS) events. High-altitude stress modulated DAS in an AS-type-specific manner: suppressing skipped exon events but increasing retained intron events. C2H2-type zinc finger transcription factors and RNA processing factors were mainly enriched in DAS. These findings revealed high-altitude stress repressed ovarian development by suppressing the gene expression of LH/FSH hormone signaling genes and inducing intron retention of C2H2-type zinc finger transcription factors.
Collapse
Affiliation(s)
- Wenhao Li
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China
| | - Weike Zeng
- College of Forestry, School of Future Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiayang Jin
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China
| | - Huiming Xu
- College of Forestry, School of Future Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xingyan Fang
- College of Forestry, School of Future Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhijie Ma
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China
| | - Gangjian Cao
- College of Forestry, School of Future Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ruizhe Li
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China
| | - Liuyin Ma
- College of Forestry, School of Future Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| |
Collapse
|
208
|
Tiwari A, Trivedi R, Lin SY. Tumor microenvironment: barrier or opportunity towards effective cancer therapy. J Biomed Sci 2022; 29:83. [PMID: 36253762 PMCID: PMC9575280 DOI: 10.1186/s12929-022-00866-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 10/01/2022] [Indexed: 12/24/2022] Open
Abstract
Tumor microenvironment (TME) is a specialized ecosystem of host components, designed by tumor cells for successful development and metastasis of tumor. With the advent of 3D culture and advanced bioinformatic methodologies, it is now possible to study TME’s individual components and their interplay at higher resolution. Deeper understanding of the immune cell’s diversity, stromal constituents, repertoire profiling, neoantigen prediction of TMEs has provided the opportunity to explore the spatial and temporal regulation of immune therapeutic interventions. The variation of TME composition among patients plays an important role in determining responders and non-responders towards cancer immunotherapy. Therefore, there could be a possibility of reprogramming of TME components to overcome the widely prevailing issue of immunotherapeutic resistance. The focus of the present review is to understand the complexity of TME and comprehending future perspective of its components as potential therapeutic targets. The later part of the review describes the sophisticated 3D models emerging as valuable means to study TME components and an extensive account of advanced bioinformatic tools to profile TME components and predict neoantigens. Overall, this review provides a comprehensive account of the current knowledge available to target TME.
Collapse
Affiliation(s)
- Aadhya Tiwari
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Rakesh Trivedi
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shiaw-Yih Lin
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
209
|
Danlou Tablet May Alleviate Vascular Injury Caused by Chronic Intermittent Hypoxia through Regulating FIH-1, HIF-1, and Angptl4. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4463108. [PMID: 36285165 PMCID: PMC9588356 DOI: 10.1155/2022/4463108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/17/2022] [Accepted: 09/20/2022] [Indexed: 11/07/2022]
Abstract
Background Danlou tablet (DLT), the traditional Chinese medicine has been commonly used for dyslipidemia, atherosclerosis, and coronary heart disease. Whether it was effective against vascular injury caused by CIH has remained unknown. The aim of the current study was to observe the effects of DLT on chronic intermittent hypoxia (CIH)-induced vascular injury via regulation of blood lipids and to explore potential mechanisms. Methods Sixteen 12-week-old male ApoE−/− mice were randomly divided into four groups. The sham group was exposed to normal room air, whereas the other three groups were exposed to CIH. Mice in the CIH + normal saline (NS) group were gavaged with NS. Mice in the CIH + Angptl4-ab group were intraperitoneally injected with Angptl4-antibody. Mice in the CIH + DLT group were gavaged with DLT. After four weeks of intervention, serum lipid concentrations, and serum lipoprotein lipase (LPL) activity were detected. The changes in atherosclerosis in vascular tissue were detected by hematoxylin and eosin (H&E) staining. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot analysis were applied to detect the expression levels of hypoxia-induciblefactor-1 (HIF-1), factor-inhibiting HIF-1 (FIH-1), angiopoietin-like 4 (Angptl4), and LPL in different tissues. Results CIH exposure increases serum lipid levels, decreases serum LPL activity, and exacerbates atherosclerosis. Both Angptl4-ab and DLT treatment reversed the changes in lipid concentration, LPL activity, and atherosclerosis caused by CIH. In the epididymal fat pad, CIH exposure decreased the expression of FIH-1 and increased the expression of HIF-1, whereas DLT treatment increased the expression of FIH-1 and LPL and inhibited the expression of HIF-1 and Angptl4. In heart tissue, the expression levels of LPL and Angptl4 were not affected by modeling or treatment. Conclusions DLT improved vascular damage by improving the increase in blood lipids induced by CIH, potentially by upregulating FIH-1 and downregulating HIF-1 and Angptl4 in adipose tissue. Therefore, DLT may be a promising agent for the prevention and treatment of CIH-induced vascular injury.
Collapse
|
210
|
Negri AL. Role of prolyl hydroxylase/HIF-1 signaling in vascular calcification. Clin Kidney J 2022; 16:205-209. [PMID: 36755843 PMCID: PMC9900523 DOI: 10.1093/ckj/sfac224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Morbidity and mortality of chronic kidney disease (CKD) patients are largely associated with vascular calcification, an actively regulated process in which vascular smooth muscle cells (VSMCs) change into cells similar to osteocytes/chondrocytes, known as trans-differentiation. Cellular and systemic response to low oxygen (hypoxia) is regulated by the prolyl hydroxylase/hypoxia-inducible factor (HIF)-1 pathway. Recent studies highlighted that hypoxia-mediated activation of HIF-1 induces trans-differentiation of VSMCs into bone-forming type through an increase in osteo-/chondrogenic genes. Inhibition of the HIF-1 pathway abolished osteochondrogenic differentiation of VSMCs. Hypoxia strongly enhanced elevated phosphate-induced VSMC osteogenic trans-differentiation and calcification. HIF-1 was shown to be essential for phosphate enhanced VSMC calcification. O2-dependent degradation HIF-1 is triggered by the prolyl hydroxylase domain proteins (PHD). Prolyl hydroxylase inhibitors, daprodustat and roxadustat, increase high phosphate-induced VC in VSMCs, stabilizing HIF-1α and activating the HIF-1 pathway in these cells. Whether the use of these PHD inhibitors to treat anemia in CKD patients will favor the development and progression of vascular calcification remains to be explored.
Collapse
|
211
|
Loss of sphingosine kinase 2 promotes the expansion of hematopoietic stem cells by improving their metabolic fitness. Blood 2022; 140:1686-1701. [PMID: 35881840 DOI: 10.1182/blood.2022016112] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/20/2022] [Indexed: 11/20/2022] Open
Abstract
Hematopoietic stem cells (HSCs) have reduced capacities to properly maintain and replenish the hematopoietic system during myelosuppressive injury or aging. Expanding and rejuvenating HSCs for therapeutic purposes has been a long-sought goal with limited progress. Here, we show that the enzyme Sphk2 (sphingosine kinase 2), which generates the lipid metabolite sphingosine-1-phosphate, is highly expressed in HSCs. The deletion of Sphk2 markedly promotes self-renewal and increases the regenerative potential of HSCs. More importantly, Sphk2 deletion globally preserves the young HSC gene expression pattern, improves the function, and sustains the multilineage potential of HSCs during aging. Mechanistically, Sphk2 interacts with prolyl hydroxylase 2 and the Von Hippel-Lindau protein to facilitate HIF1α ubiquitination in the nucleus independent of the Sphk2 catalytic activity. Deletion of Sphk2 increases hypoxic responses by stabilizing the HIF1α protein to upregulate PDK3, a glycolysis checkpoint protein for HSC quiescence, which subsequently enhances the function of HSCs by improving their metabolic fitness; specifically, it enhances anaerobic glycolysis but suppresses mitochondrial oxidative phosphorylation and generation of reactive oxygen species. Overall, targeting Sphk2 to enhance the metabolic fitness of HSCs is a promising strategy to expand and rejuvenate functional HSCs.
Collapse
|
212
|
Wen B, Zhang W, Zhang Y, Lei H, Cao Y, Li W, Wang W. Self-Effected Allosteric Coupling and Cooperativity in Hypoxic Response Regulation with Disordered Proteins. J Phys Chem Lett 2022; 13:9201-9209. [PMID: 36170455 DOI: 10.1021/acs.jpclett.2c02065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Hypersensitive regulation of cellular hypoxic response relies on cooperative displacement of one disordered protein (HIF-1α) by another disordered protein (CITED2) from the target in a negative feedback loop. Considering the weak intramolecule coupling in disordered proteins, the molecular mechanism of high cooperativity in the molecular displacement event remains elusive. Herein, we show that disordered proteins utilize a "self-effected allostery" mechanism to achieve high binding cooperativity. Different from the conventional allostery mechanisms shown by many structured or disordered proteins, this mechanism utilizes one part of the disordered protein as the effector to trigger the allosteric coupling and enhance the binding of the remaining part of the same disordered protein, contributing to high cooperativity of the displacement event. The conserved charge motif of CITED2 is the key determinant of the molecular displacement event by serving as the effector of allosteric coupling. Such self-effected allostery provides an efficient strategy to achieve high cooperativity in the molecular events involving disordered proteins.
Collapse
Affiliation(s)
- Bin Wen
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Weiwei Zhang
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Yangyang Zhang
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Hai Lei
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yi Cao
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Wenfei Li
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Wei Wang
- National Laboratory of Solid State Microstructure, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| |
Collapse
|
213
|
Li Y, Huang H, Jiang M, Yu N, Ye X, Huang Z, Chen L. Identification and validation of a hypoxia-immune signature for overall survival prediction in lung adenocarcinoma. Front Genet 2022; 13:975279. [PMID: 36263421 PMCID: PMC9573950 DOI: 10.3389/fgene.2022.975279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/12/2022] [Indexed: 11/24/2022] Open
Abstract
Objective: The interaction between immunity and hypoxia in tumor microenvironment (TME) has clinical significance, and this study aims to explore immune-hypoxia related biomarkers in LUAD to guide accurate prognosis of patients. Methods: The LUAD gene expression dataset was downloaded from GEO and TCGA databases. The immune-related genes and hypoxia-related genes were acquired from ImmPort and MSigDB databases, respectively. Genes related to immune and hypoxia in LUAD were obtained by intersection. The significantly prognostic genes in LUAD were obtained by LASSO and Cox regression analyses and a prognostic model was constructed. Kaplan-Meier and receiver operating characteristic curves were generated to evaluate and validate model reliability. Single-sample gene set enrichment analysis (ssGSEA) and gene set variation analysis (GSVA) were employed to analyze immune cell infiltration and pathway differences between high- and low-risk groups. Nomogram and calibration curves for survival curve and clinical features were drawn to measure prognostic value of the model. Results: The prognosis model of LUAD was constructed based on seven immune-hypoxia related genes: S100P, S100A16, PGK1, TNFSF11, ARRB1, NCR3, and TSLP. Survival analysis revealed a poor prognosis in high-risk group. ssGSEA result suggested that activities of immune cells in high-risk group was remarkably lower than in low-risk group, and GSVA result showed that immune-related pathway was notably activated in low-risk group. Conclusion: Immune-hypoxia related genes were found to be prognostic biomarkers for LUAD patients, based on which a 7-immune-hypoxia related gene-signature was constructed. This model can assess immune status of LUAD patients, and provide clinical reference for individualized prognosis, treatment and follow-up of LUAD patients.
Collapse
Affiliation(s)
- Yong Li
- Department of Respiration Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Huiqin Huang
- Fujian Provincial Key Laboratory of Medical Testing, Fujian Academy of Medical Sciences, Fuzhou, China
| | - Meichen Jiang
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Nanding Yu
- Department of Respiration Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiangli Ye
- Department of Respiration Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Zhenghui Huang
- Department of Respiration Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Limin Chen
- Department of Respiration Medicine, Fujian Medical University Union Hospital, Fuzhou, China
- *Correspondence: Limin Chen,
| |
Collapse
|
214
|
Effect of hypobaric hypoxia on hematological parameters related to oxygen transport, blood volume and oxygen consumption in adolescent endurance-training athletes. J Exerc Sci Fit 2022; 20:391-399. [PMID: 36348710 PMCID: PMC9615323 DOI: 10.1016/j.jesf.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/20/2022] [Accepted: 10/05/2022] [Indexed: 11/11/2022] Open
Abstract
Objective To analyze the effect of altitude on hematological and cardiorespiratory variables in adolescent athletes participating in aerobic disciplines. Methods 21 females and 89 males participated in the study. All were adolescent elite athletes engaged in endurance sports (skating, running and cycling) belonging to two groups: permanent residents in either low altitude (LA, 966 m) or moderate altitude (MA, 2640 m). Hematocrit (Hct), hemoglobin concentration ([Hb]), total hemoglobin mass (Hbt), blood, plasma and erythrocyte volumes (BV, PV and EV), VO2peak and other cardiorespiratory parameters were evaluated. Results Sex differences were evident both in LA and HA skating practitioners, the males having higher significant values than the females in oxygen transport-related hematological parameters and VO2peak. The effect of altitude residence was also observed in Hct, [Hb], Hbt and EV with increased (14%–18%) values in the hematological parameters and higher EV (5%–24%). These results matched the significantly higher values of VO2peak measured in MA residents. However, BV and PV did not show differences between LA and MA residents in any case. Sports discipline influenced neither the hematological variables nor most of the cardiorespiratory parameters. Conclusions LA and MA adolescent skaters showed sex differences in hematological variables. Endurance-trained male adolescent residents at MA had an increased erythropoietic response and a higher VO2peak compared to their counterparts residing and training at LA. These responses are similar in the three aerobic sports studied, indicating that the variables described are highly sensitive to hypoxia irrespective of the sports discipline.
Collapse
|
215
|
Zheng Q, Yang F, Gan H, Jin L. Hypoxia induced ALKBH5 prevents spontaneous abortion by mediating m 6A-demethylation of SMAD1/5 mRNAs. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119316. [PMID: 35724807 DOI: 10.1016/j.bbamcr.2022.119316] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/07/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
The molecules induced by hypoxia have been supposed to be important regulators of first trimester trophoblast activity, but the key mechanism mediating invasion of trophoblast cells is not fully illustrated. Here, we found that the expression of RNA demethylase ALKBH5 was upregulated in trophoblast upon hypoxia treatment and decreased in extravillous trophoblast (EVT) of patients with recurrent spontaneous abortion (RSA). Furthermore, we found that trophoblast-specific knockdown of ALKBH5 in mouse placenta suppressed the invasion of trophoblast and significantly led to fetus abortion in vivo. Then ALKBH5 was identified to promote the invasion of trophoblast. Mechanistically, we identified transcripts with altered methylation in trophoblast induced by hypoxia via m6A-seq, ALKBH5 translocated from nucleus to cytoplasm upon hypoxia treatment and demethylated certain target transcripts, such as m6A-modified SMAD1/SMAD5, consequently enhanced the translation of SMAD1/SMAD5 and then promoted MMP9 and ITGA1 production. Thus, we demonstrated that ALKBH5 promoted the activity of trophoblasts by enhancing SMAD1/5 expression via erasing their m6A modifications. Our research revealed a new m6A epigenetic way to regulate the invasion of trophoblast, which suggested a novel potential therapeutic target for spontaneous abortion prevention.
Collapse
Affiliation(s)
- Qingliang Zheng
- Prenatal Diagnosis Center, The Eighth Affiliated Hospital, Sun Yat-sen University, 3025# Shennan Road, Shenzhen 518000, PR China.
| | - Fenglian Yang
- Shanghai Key Laboratory of Maternal-Fetal Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 201204, PR China
| | - Haili Gan
- Shanghai Key Laboratory of Maternal-Fetal Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 201204, PR China
| | - Liping Jin
- Shanghai Key Laboratory of Maternal-Fetal Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 201204, PR China.
| |
Collapse
|
216
|
Li J, Fu X, Zhang D, Guo D, Xu S, Wei J, Xie J, Zhou X. Co-culture with osteoblasts up-regulates glycolysis of chondrocytes through MAPK/HIF-1 pathway. Tissue Cell 2022; 78:101892. [DOI: 10.1016/j.tice.2022.101892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/04/2022] [Accepted: 08/06/2022] [Indexed: 10/15/2022]
|
217
|
Hu L, Wu X, Chen D, Cao Z, Li Z, Liu Y, Zhao Q. The hypoxia-related signature predicts prognosis, pyroptosis and drug sensitivity of osteosarcoma. Front Cell Dev Biol 2022; 10:814722. [PMID: 36204682 PMCID: PMC9532009 DOI: 10.3389/fcell.2022.814722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 08/29/2022] [Indexed: 11/17/2022] Open
Abstract
Osteosarcoma (OS) is one of the most common types of solid sarcoma with a poor prognosis. Solid tumors are often exposed to hypoxic conditions, while hypoxia is regarded as a driving force in tumor recurrence, metastasis, progression, low chemosensitivity and poor prognosis. Pytoptosis is a gasdermin-mediated inflammatory cell death that plays an essential role in host defense against tumorigenesis. However, few studies have reported relationships among hypoxia, pyroptosis, tumor immune microenvironment, chemosensitivity, and prognosis in OS. In this study, gene and clinical data from Therapeutically Applicable Research to Generate Effective Treatments (TARGET) and Gene Expression Omnibus (GEO) databases were merged to develop a hypoxia risk model comprising four genes (PDK1, LOX, DCN, and HMOX1). The high hypoxia risk group had a poor prognosis and immunosuppressive status. Meanwhile, the infiltration of CD8+ T cells, activated memory CD4+ T cells, and related chemokines and genes were associated with clinical survival outcomes or chemosensitivity, the possible crucial driving forces of the OS hypoxia immune microenvironment that affect the development of pyroptosis. We established a pyroptosis risk model based on 14 pyroptosis-related genes to independently predict not only the prognosis but also the chemotherapy sensitivities. By exploring the various connections between the hypoxic immune microenvironment and pyroptosis, this study indicates that hypoxia could influence tumor immune microenvironment (TIM) remodeling and promote pyroptosis leading to poor prognosis and low chemosensitivity.
Collapse
Affiliation(s)
- Lin Hu
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xin Wu
- Department of Spine Surgery, Third Xiangya Hospital, Central South University, Changsha, China
| | - Dongjie Chen
- Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhenyu Cao
- Department of Orthopedics, The Qinghai Provincial People's Hospital, Xining, China
| | - Zian Li
- Department of Clinical Laboratory, Qinghai Provincial People's Hospital, Xining, China
| | - Yanmin Liu
- Department of Cardiovascular Medicine, The Qinghai Provincial People's Hospital, Xining, China
- *Correspondence: Yanmin Liu, ; Qiangqiang Zhao,
| | - Qiangqiang Zhao
- Department of Hematology, The Qinghai Provincial People’s Hospital, Xining, China
- *Correspondence: Yanmin Liu, ; Qiangqiang Zhao,
| |
Collapse
|
218
|
MKK4 Knockdown Plays a Protective Role in Hemorrhagic Shock-Induced Liver Injury through the JNK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5074153. [PMID: 36164393 PMCID: PMC9509254 DOI: 10.1155/2022/5074153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/18/2022]
Abstract
Hemorrhagic shock (HS) triggers tissue hypoxia and organ failure during severe blood loss, and the liver is sensitive to HS. Mitogen-activated protein kinase kinase 4 (MKK4) activates the c-Jun NH2-terminal kinase (JNK) pathway, and its expression is upregulated in the serum of HS patients and mouse livers at 1 h post-HS. However, the function of MKK4 in HS-induced liver injury is unclear. The role of MKK4 was investigated in vivo using rat models of HS. Before HS, lentivirus harboring shRNA against MKK4 was injected into rats via the tail vein to knock down MKK4 expression. HS was induced by bloodletting via intubation of the femoral artery followed by resuscitation. The results showed that MKK4 knockdown reduced HS-induced apoptosis in the liver by decreasing Bax expression and the cleavage of caspase 3 and promoting Bcl-2 expression. Moreover, the generation of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) in the liver was promoted, while superoxide dismutase (SOD) activity was inhibited by HS. However, the effect of HS on oxidative stress was abrogated by MKK4 knockdown. Furthermore, MKK4 knockdown restored MMP and complex I and complex III activities and promoted ATP production, suggesting that HS-induced mitochondrial dysfunction in the liver was ameliorated by MKK4 knockdown. The inhibitory effect of MKK4 knockdown on the phosphorylation and activation of the JNK/c-Jun pathway was confirmed. Overall, MKK4 knockdown may suppress oxidative stress and subsequent apoptosis and improve mitochondrial function in the liver upon HS by inhibiting the JNK pathway. The MKK4/JNK axis was shown to be a therapeutic target for HS-induced liver injury in this study.
Collapse
|
219
|
Wang Z, Zhang C. From AKI to CKD: Maladaptive Repair and the Underlying Mechanisms. Int J Mol Sci 2022; 23:ijms231810880. [PMID: 36142787 PMCID: PMC9504835 DOI: 10.3390/ijms231810880] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
Acute kidney injury (AKI) is defined as a pathological condition in which the glomerular filtration rate decreases rapidly over a short period of time, resulting in changes in the physiological function and tissue structure of the kidney. An increasing amount of evidence indicates that there is an inseparable relationship between acute kidney injury and chronic kidney disease (CKD). With the progress in research in this area, researchers have found that the recovery of AKI may also result in the occurrence of CKD due to its own maladaptation and other potential mechanisms, which involve endothelial cell injury, inflammatory reactions, progression to fibrosis and other pathways that promote the progress of the disease. Based on these findings, this review summarizes the occurrence and potential mechanisms of maladaptive repair in the progression of AKI to CKD and explores possible treatment strategies in this process so as to provide a reference for the inhibition of the progression of AKI to CKD.
Collapse
|
220
|
Yuan H, Liu X, Wang Z, Ren Y, Li Y, Gao C, Jiao T, Cai Y, Yang Y, Zhao S. Alternative splicing signature of alveolar type II epithelial cells of Tibetan pigs under hypoxia-induced. Front Vet Sci 2022; 9:984703. [PMID: 36187824 PMCID: PMC9523697 DOI: 10.3389/fvets.2022.984703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Alternative splicing (AS) allows the generation of multiple transcript variants from a single gene and affects biological processes by generating protein diversity in organisms. In total, 41,642 AS events corresponding to 9,924 genes were identified, and SE is the most abundant alternatively spliced type. The analysis of functional categories demonstrates that alternatively spliced differentially expressed genes (DEGs) were enriched in the MAPK signaling pathway and hypoxia-inducible factor 1 (HIF-1) signaling pathway. Proteoglycans in cancer between the normoxic (21% O2, TN and LN) and hypoxic (2% O2, TL and LL) groups, such as SLC2A1, HK1, HK2, ENO3, and PFKFB3, have the potential to rapidly proliferate alveolar type II epithelial (ATII) cells by increasing the intracellular levels of glucose and quickly divert to anabolic pathways by glycolysis intermediates under hypoxia. ACADL, EHHADH, and CPT1A undergo one or two AS types with different frequencies in ATII cells between TN and TL groups (excluding alternatively spliced DEGs shared between normoxic and hypoxic groups), and a constant supply of lipids might be obtained either from the circulation or de novo synthesis for better growth of ATII cells under hypoxia condition. MCM7 and MCM3 undergo different AS types between LN and LL groups (excluding alternatively spliced DEGs shared between normoxic and hypoxic groups), which may bind to the amino-terminal PER-SIM-ARNT domain and the carboxyl terminus of HIF-1α to maintain their stability. Overall, AS and expression levels of candidate mRNAs between Tibetan pigs and Landrace pigs revealed by RNA-seq suggest their potential involvement in the ATII cells grown under hypoxia conditions.
Collapse
Affiliation(s)
- Haonan Yuan
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Xuanbo Liu
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Zhengwen Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yue Ren
- Academy of Agriculture and Animal Husbandry Sciences, Institute of Animal Husbandry and Veterinary Medicine, Lhasa, China
| | - Yongqing Li
- Xinjiang Academy of Animal Sciences, Xinjiang, China
| | - Caixia Gao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Ting Jiao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
- College of Grassland Science, Gansu Agricultural University, Lanzhou, China
| | - Yuan Cai
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yanan Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
- *Correspondence: Yanan Yang
| | - Shengguo Zhao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
- Shengguo Zhao
| |
Collapse
|
221
|
Aljoufi A, Zhang C, Ropa J, Chang W, Palam LR, Cooper S, Ramdas B, Capitano ML, Broxmeyer HE, Kapur R. Physioxia-induced downregulation of Tet2 in hematopoietic stem cells contributes to enhanced self-renewal. Blood 2022; 140:1263-1277. [PMID: 35772013 PMCID: PMC9479026 DOI: 10.1182/blood.2022015499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 06/17/2022] [Indexed: 12/15/2022] Open
Abstract
Hematopoietic stem cells (HSCs) manifest impaired recovery and self-renewal with a concomitant increase in differentiation when exposed to ambient air as opposed to physioxia. Mechanism(s) behind this distinction are poorly understood but have the potential to improve stem cell transplantation. Single-cell RNA sequencing of HSCs in physioxia revealed upregulation of HSC self-renewal genes and downregulation of genes involved in inflammatory pathways and HSC differentiation. HSCs under physioxia also exhibited downregulation of the epigenetic modifier Tet2. Tet2 is α-ketoglutarate, iron- and oxygen-dependent dioxygenase that converts 5-methylcytosine to 5-hydroxymethylcytosine, thereby promoting active transcription. We evaluated whether loss of Tet2 affects the number and function of HSCs and hematopoietic progenitor cells (HPCs) under physioxia and ambient air. In contrast to wild-type HSCs (WT HSCs), a complete nonresponsiveness of Tet2-/- HSCs and HPCs to changes in oxygen tension was observed. Unlike WT HSCs, Tet2-/- HSCs and HPCs exhibited similar numbers and function in either physioxia or ambient air. The lack of response to changes in oxygen tension in Tet2-/- HSCs was associated with similar changes in self-renewal and quiescence genes among WT HSC-physioxia, Tet2-/- HSC-physioxia and Tet2-/- HSC-air. We define a novel molecular program involving Tet2 in regulating HSCs under physioxia.
Collapse
Affiliation(s)
| | - Chi Zhang
- Department of Medical and Molecular Genetics, and
| | - James Ropa
- Department of Microbiology and Immunology
| | - Wennan Chang
- Department of Medical and Molecular Genetics, and
| | - Lakshmi Reddy Palam
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| | | | - Baskar Ramdas
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| | | | | | - Reuben Kapur
- Department of Microbiology and Immunology
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| |
Collapse
|
222
|
Increasing angiogenic efficacy of conditioned medium using light stimulation of human adipose-derived stem cells. Commun Biol 2022; 5:957. [PMID: 36100628 PMCID: PMC9470574 DOI: 10.1038/s42003-022-03838-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 08/12/2022] [Indexed: 11/13/2022] Open
Abstract
Conditioned medium (CM) contains various therapeutic molecules produced by cells. However, the low concentration of therapeutic molecules in CM is a major challenge for successful tissue regeneration. Here, we aim to develop a CM enriched in angiogenic paracrine factors for the treatment of ischemic diseases. Combining spheroidal culture and light irradiation significantly upregulates the angiogenic factor expression in human adipose-derived stem cells (hADSCs). Spheroids of light-irradiated hADSCs (SR group) show significantly enhanced expression of angiogenic paracrine factors compared with spheroids without light stimulation. Enhanced viability, migration, and angiogenesis are observed in cells treated with CM derived from the SR group. Furthermore, we performed in vivo experiments using a mouse hindlimb ischemia model; the results demonstrate that CM derived from densely cultured spheroids of light-irradiated hADSCs induced increased angiogenesis in vivo. In conclusion, our proposed approach of using light to stimulate stem cells may overcome the major drawbacks of CM-based therapies. Combining spheroidal culture of human adipose-derived stem cells with light irradiation enhances angiogenic growth factor secretion in conditioned media, which can improve angiogenesis in a mouse hindlimb ischemia model.
Collapse
|
223
|
Yan C, Zhang ZY, Lv Y, Wang Z, Jiang K, Li JT. Genome of Laudakia sacra Provides New Insights into High-Altitude Adaptation of Ectotherms. Int J Mol Sci 2022; 23:ijms231710081. [PMID: 36077479 PMCID: PMC9456099 DOI: 10.3390/ijms231710081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 12/02/2022] Open
Abstract
Anan’s rock agama (Laudakia sacra) is a lizard species endemic to the harsh high-altitude environment of the Qinghai–Tibet Plateau, a region characterized by low oxygen tension and high ultraviolet (UV) radiation. To better understand the genetic mechanisms underlying highland adaptation of ectotherms, we assembled a 1.80-Gb L. sacra genome, which contained 284 contigs with an N50 of 20.19 Mb and a BUSCO score of 93.54%. Comparative genomic analysis indicated that mutations in certain genes, including HIF1A, TIE2, and NFAT family members and genes in the respiratory chain, may be common adaptations to hypoxia among high-altitude animals. Compared with lowland reptiles, MLIP showed a convergent mutation in L. sacra and the Tibetan hot-spring snake (Thermophis baileyi), which may affect their hypoxia adaptation. In L. sacra, several genes related to cardiovascular remodeling, erythropoiesis, oxidative phosphorylation, and DNA repair may also be tailored for adaptation to UV radiation and hypoxia. Of note, ERCC6 and MSH2, two genes associated with adaptation to UV radiation in T. baileyi, exhibited L. sacra-specific mutations that may affect peptide function. Thus, this study provides new insights into the potential mechanisms underpinning high-altitude adaptation in ectotherms and reveals certain genetic generalities for animals’ survival on the plateau.
Collapse
Affiliation(s)
- Chaochao Yan
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Zhi-Yi Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- Correspondence: (Z.-Y.Z.); (J.-T.L.)
| | - Yunyun Lv
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- College of Life Science, Neijiang Normal University, Neijiang 641100, China
| | - Zeng Wang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 101408, China
| | - Ke Jiang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jia-Tang Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 101408, China
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China
- Mangkang Biodiversity and Ecological Station, Tibet Ecological Safety Monitor Network, Changdu 854500, China
- Correspondence: (Z.-Y.Z.); (J.-T.L.)
| |
Collapse
|
224
|
Varghese B, Cen S, Zahoor H, Siddiqui I, Aron M, Sali A, Rhie S, Lei X, Rivas M, Liu D, Hwang D, Quinn D, Desai M, Vaishampayan U, Gill I, Duddalwar V. Feasibility of using CT radiomic signatures for predicting CD8-T cell infiltration and PD-L1 expression in renal cell carcinoma. Eur J Radiol Open 2022; 9:100440. [PMID: 36090617 PMCID: PMC9460152 DOI: 10.1016/j.ejro.2022.100440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 01/26/2023] Open
Abstract
Objectives To identify computed tomography (CT)-based radiomic signatures of cluster of differentiation 8 (CD8)-T cell infiltration and programmed cell death ligand 1 (PD-L1) expression levels in patients with clear-cell renal cell carcinoma (ccRCC). Methods Seventy-eight patients with pathologically confirmed localized ccRCC, preoperative multiphase CT and tumor resection specimens were enrolled in this retrospective study. Regions of interest (ROI) of the ccRCC volume were manually segmented from the CT images and processed using a radiomics panel comprising of 1708 metrics. The extracted metrics were used as inputs to three machine learning classifiers: Random Forest, AdaBoost, and ElasticNet to create radiomic signatures for CD8-T cell infiltration and PD-L1 expression, respectively. Results Using a cut-off of 80 lymphocytes per high power field, 59 % were classified to CD8 highly infiltrated tumors and 41 % were CD8 non highly infiltrated tumors, respectively. An ElasticNet classifier discriminated between these two groups of CD8-T cells with an AUC of 0.68 (95 % CI, 0.55-0.80). In addition, based on tumor proportion score with a cut-off of > 1 % tumor cells expressing PD-L1, 76 % were PD-L1 positive and 24 % were PD-L1 negative. An Adaboost classifier discriminated between PD-L1 positive and PD-L1 negative tumors with an AUC of 0.8 95 % CI: (0.66, 0.95). 3D radiomics metrics of graylevel co-occurrence matrix (GLCM) and graylevel run-length matrix (GLRLM) metrics drove the performance for CD8-Tcell and PD-L1 classification, respectively. Conclusions CT-radiomic signatures can differentiate tumors with high CD8-T cell infiltration with moderate accuracy and positive PD-L1 expression with good accuracy in ccRCC.
Collapse
Affiliation(s)
- Bino Varghese
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA,Correspondence to: Keck Medical Center of USC, University of Southern California, Norris Topping Tower 4417, Los Angeles, CA 90033, USA.
| | - Steven Cen
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Haris Zahoor
- Keck School of Medicine, Department of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Imran Siddiqui
- Keck School of Medicine, Department of Pathology, University of Southern California, Los Angeles, CA, USA
| | - Manju Aron
- Keck School of Medicine, Department of Pathology, University of Southern California, Los Angeles, CA, USA
| | - Akash Sali
- Homi Bhabha Cancer Hospital, Department of Pathology, Sangrur, Punjab, India
| | - Suhn Rhie
- Keck School of Medicine, Department of Molecular Medicine, University of Southern California, Los Angeles, CA, USA
| | - Xiaomeng Lei
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Marielena Rivas
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Derek Liu
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Darryl Hwang
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - David Quinn
- Keck School of Medicine, Department of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Mihir Desai
- Keck School of Medicine, Department of Urology, University of Southern California, Los Angeles, CA, USA
| | - Ulka Vaishampayan
- Rogel Cancer Center, Urologic Oncology Clinic, University of Michigan, Ann Arbor, MI, USA
| | - Inderbir Gill
- Keck School of Medicine, Department of Urology, University of Southern California, Los Angeles, CA, USA
| | - Vinay Duddalwar
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| |
Collapse
|
225
|
Xiong A, Zhang J, Chen Y, Zhang Y, Yang F. Integrated single-cell transcriptomic analyses reveal that GPNMB-high macrophages promote PN-MES transition and impede T cell activation in GBM. EBioMedicine 2022; 83:104239. [PMID: 36054938 PMCID: PMC9437813 DOI: 10.1016/j.ebiom.2022.104239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 10/27/2022] Open
|
226
|
Lee D, Nakai A, Miwa Y, Tomita Y, Kunimi H, Chen J, Ikeda SI, Tsubota K, Negishi K, Kurihara T. Retinal degeneration induced in a mouse model of ischemia-reperfusion injury and its management by pemafibrate treatment. FASEB J 2022; 36:e22497. [PMID: 35969144 DOI: 10.1096/fj.202200455rrr] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 07/19/2022] [Accepted: 08/01/2022] [Indexed: 01/02/2023]
Abstract
Retinal ischemia-reperfusion (I/R) injury is a common cause of visual impairment. To date, no effective treatment is available for retinal I/R injury. In addition, the precise pathological mechanisms still need to be established. Recently, pemafibrate, a peroxisome proliferator-activated receptor α (PPARα) modulator, was shown to be a promising drug for retinal ischemia. However, the role of pemafibrate in preventing retinal I/R injury has not been documented. Here, we investigated how retinal degeneration occurs in a mouse model of retinal I/R injury by elevation of intraocular pressure and examined whether pemafibrate could be beneficial against retinal degeneration. Adult mice were orally administered pemafibrate (0.5 mg/kg/day) for 4 days, followed by retinal I/R injury. The mice were continuously administered pemafibrate once every day until the end of the experiments. Retinal functional changes were measured using electroretinography. Retina, liver, and serum samples were used for western blotting, quantitative PCR, immunohistochemistry, or enzyme linked immunosorbent assay. Retinal degeneration induced by retinal inflammation was prevented by pemafibrate administration. Pemafibrate administration increased the hepatic PPARα target gene expression and serum levels of fibroblast growth factor 21, a neuroprotective molecule in the eye. The expression of hypoxia-response and pro-and anti-apoptotic/inflammatory genes increased in the retina following retinal I/R injury; however, these changes were modulated by pemafibrate administration. In conclusion, pemafibrate is a promising preventive drug for ischemic retinopathies.
Collapse
Affiliation(s)
- Deokho Lee
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Ayaka Nakai
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Nihon University School of Medicine, Tokyo, Japan
| | - Yukihiro Miwa
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.,Aichi Animal Eye Clinic, Aichi, Japan
| | - Yohei Tomita
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Harvard Medical School, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Hiromitsu Kunimi
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Junhan Chen
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Shin-Ichi Ikeda
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | | | - Kazuno Negishi
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan
| | - Toshihide Kurihara
- Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| |
Collapse
|
227
|
Shaabani E, Sharifiaghdam M, Faridi-Majidi R, De Smedt SC, Braeckmans K, Fraire JC. Gene therapy to enhance angiogenesis in chronic wounds. MOLECULAR THERAPY - NUCLEIC ACIDS 2022; 29:871-899. [PMID: 36159590 PMCID: PMC9464651 DOI: 10.1016/j.omtn.2022.08.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Skin injuries and chronic non-healing wounds are one of the major global burdens on the healthcare systems worldwide due to their difficult-to-treat nature, associated co-morbidities, and high health care costs. Angiogenesis has a pivotal role in the wound-healing process, which becomes impaired in many chronic non-healing wounds, leading to several healing disorders and complications. Therefore, induction or promotion of angiogenesis can be considered a promising approach for healing of chronic wounds. Gene therapy is one of the most promising upcoming strategies for the treatment of chronic wounds. It can be classified into three main approaches: gene augmentation, gene silencing, and gene editing. Despite the increasing number of encouraging results obtained using nucleic acids (NAs) as active pharmaceutical ingredients of gene therapy, efficient delivery of NAs to their site of action (cytoplasm or nucleus) remains a key challenge. Selection of the right therapeutic cargo and delivery methods is crucial for a favorable prognosis of the healing process. This article presents an overview of gene therapy and non-viral delivery methods for angiogenesis induction in chronic wounds.
Collapse
|
228
|
Ren Z, Potenza DM, Ma Y, Ajalbert G, Hoogewijs D, Ming XF, Yang Z. Role of Arginase-II in Podocyte Injury under Hypoxic Conditions. Biomolecules 2022; 12:biom12091213. [PMID: 36139052 PMCID: PMC9496188 DOI: 10.3390/biom12091213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Hypoxia plays a crucial role in acute and chronic renal injury, which is attributable to renal tubular and glomerular cell damage. Some studies provide evidence that hypoxia-dependent upregulation of the mitochondrial enzyme arginase type-II (Arg-II) in tubular cells promotes renal tubular injury. It is, however, not known whether Arg-II is also expressed in glomerular cells, particularly podocytes under hypoxic conditions, contributing to hypoxia-induced podocyte injury. The effects of hypoxia on human podocyte cells (AB8/13) in cultures and on isolated kidneys from wild-type (wt) and arg-ii gene-deficient (arg-ii−/−) mice ex vivo, as well as on mice of the two genotypes in vivo, were investigated, respectively. We found that the Arg-II levels were enhanced in cultured podocytes in a time-dependent manner over 48 h, which was dependent on the stabilization of hypoxia-inducible factor 1α (HIF1α). Moreover, a hypoxia-induced derangement of cellular actin cytoskeletal fibers, a decrease in podocin, and an increase in mitochondrial ROS (mtROS) generation—as measured by MitoSOX—were inhibited by adenoviral-mediated arg-ii gene silencing. These effects of hypoxia on podocyte injury were mimicked by the HIFα stabilizing drug DMOG, which inhibits prolyl hydroxylases (PHD), the enzymes involved in HIFα degradation. The silencing of arg-ii prevented the detrimental effects of DMOG on podocytes. Furthermore, the inhibition of mtROS generation by rotenone—the inhibitor of respiration chain complex-I—recapitulated the protective effects of arg-ii silencing on podocytes under hypoxic conditions. Moreover, the ex vivo experiments with isolated kidney tissues and the in vivo experiments with mice exposed to hypoxic conditions showed increased Arg-II levels in podocytes and decreased podocyte markers regarding synaptopodin in wt mice but not in arg-ii−/− mice. While age-associated albuminuria was reduced in the arg-ii−/− mice, the hypoxia-induced increase in albuminuria was, however, not significantly affected in the arg-ii−/−. Our study demonstrates that Arg-II in podocytes promotes cell injury. Arg-ii ablation seems insufficient to protect mice in vivo against a hypoxia-induced increase in albuminuria, but it does reduce albuminuria in aging.
Collapse
Affiliation(s)
- Zhilong Ren
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Duilio Michele Potenza
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Yiqiong Ma
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Guillaume Ajalbert
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - David Hoogewijs
- Integrative Oxygen Physiology, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Xiu-Fen Ming
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
- Correspondence: (X.-F.M.); (Z.Y.); Tel.: +41-26-300-85-93 (Z.Y.)
| | - Zhihong Yang
- Cardiovascular & Aging Research, Department of Endocrinology, Metabolism, Cardiovascular System, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
- Correspondence: (X.-F.M.); (Z.Y.); Tel.: +41-26-300-85-93 (Z.Y.)
| |
Collapse
|
229
|
Dai W, Li Y, Sun W, Ji M, Bao R, Chen J, Xu S, Dai Y, Chen Y, Liu W, Ge C, Sun W, Mo W, Guo C, Xu X. Silencing of OGDHL promotes liver cancer metastasis by enhancing hypoxia inducible factor 1 α protein stability. Cancer Sci 2022; 114:1309-1323. [PMID: 36000493 PMCID: PMC10067421 DOI: 10.1111/cas.15540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/07/2022] [Accepted: 07/14/2022] [Indexed: 02/01/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common malignant diseases associated with a high rate of mortality. Frequent intrahepatic spread, extrahepatic metastasis, and tumor invasiveness are the main factors responsible for the poor prognosis of patients with HCC. Hypoxia-inducible factor 1 (HIF-1) has been verified to play a critical role in the metastasis of HCC. HIFs are also known to be modulated by small molecular metabolites, thus highlighting the need to understand the complexity of their cellular regulation in tumor metastasis. In this study, lower expression levels of oxoglutarate dehydrogenase-like (OGDHL) were strongly correlated with aggressive clinicopathologic characteristics, such as metastasis and invasion in three independent cohorts featuring a total of 281 postoperative HCC patients. The aberrant expression of OGDHL reduced cell invasiveness and migration in vitro and HCC metastasis in vivo, whereas the silencing of OGDHL promoted these processes in HCC cells. The pro-metastatic role of OGDHL downregulation is most likely attributed to its upregulation of HIF-1α transactivation activity and the protein stabilization by promoting the accumulation of L-2-HG to prevent the activity of HIF-1α prolyl hydroxylases, which subsequently causes an epithelial-mesenchymal transition process in HCC cells. These results demonstrate that OGDHL is a dominant factor that modulates the metastasis of HCC.
Collapse
Affiliation(s)
- Weiqi Dai
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Yueyue Li
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Weijie Sun
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Meng Ji
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Renjun Bao
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China.,Suzhou Medical College of Soochow University, Suzhou, China
| | - Jianqing Chen
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Shuqi Xu
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Ying Dai
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Yiming Chen
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Wenjing Liu
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Chao Ge
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Wei Sun
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Wenhui Mo
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| | - Chuanyong Guo
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xuanfu Xu
- Department of Gastroenterology, Shidong Hospital, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China
| |
Collapse
|
230
|
Long non-coding RNA DARS-AS1 promotes tumor progression by directly suppressing PACT-mediated cellular stress. Commun Biol 2022; 5:822. [PMID: 35970927 PMCID: PMC9378715 DOI: 10.1038/s42003-022-03778-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 07/29/2022] [Indexed: 11/08/2022] Open
Abstract
Cancer cells evolve various mechanisms to overcome cellular stresses and maintain progression. Protein kinase R (PKR) and its protein activator (PACT) are the initial responders in monitoring diverse stress signals and lead to inhibition of cell proliferation and cell apoptosis in consequence. However, the regulation of PACT-PKR pathway in cancer cells remains largely unknown. Herein, we identify that the long non-coding RNA (lncRNA) aspartyl-tRNA synthetase antisense RNA 1 (DARS-AS1) is directly involved in the inhibition of the PACT-PKR pathway and promotes the proliferation of cancer cells. Using large-scale CRISPRi functional screening of 971 cancer-associated lncRNAs, we find that DARS-AS1 is associated with significantly enhanced proliferation of cancer cells. Accordingly, knocking down DARS-AS1 inhibits cell proliferation of multiple cancer cell lines and promotes cancer cell apoptosis in vitro and significantly reduces tumor growth in vivo. Mechanistically, DARS-AS1 directly binds to the activator domain of PACT and prevents PACT-PKR interaction, thereby decreasing PKR activation, eIF2α phosphorylation and inhibiting apoptotic cell death. Clinically, DARS-AS1 is broadly expressed across multiple cancers and the increased expression of this lncRNA indicates poor prognosis. This study elucidates the lncRNA DARS-AS1 directed cancer-specific modulation of the PACT-PKR pathway and provides another target for cancer prognosis and therapeutic treatment. A loss-of-function screen reveals a role for lncRNA DARS-AS1 in promoting cancer cell proliferation and further experiments shows DARS-AS1 regulates the PACT-PKR pathway, overall suggesting it as a potential target for cancer therapy and prognosis.
Collapse
|
231
|
Kapeleris J, Müller Bark J, Ranjit S, Richard D, Vela I, O'Byrne K, Punyadeera C. Modelling reoxygenation effects in non-small cell lung cancer cell lines and showing epithelial-mesenchymal transition. J Cancer Res Clin Oncol 2022; 148:3501-3510. [PMID: 35932303 PMCID: PMC9587087 DOI: 10.1007/s00432-022-04242-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 07/27/2022] [Indexed: 11/24/2022]
Abstract
Purpose Circulating tumour cells (CTCs) are a rare cell subpopulation regulated by the tumour microenvironment. In hypoxic conditions, CTCs are able to invade the lymphatic and circulatory systems leading to metastasis at distant sites. Methods To mimic in vivo oxygen variations and effects on CTCs, we have cultured five non-small cell lung cancer (NSCLC) cell lines under normoxic and hypoxic conditions, followed by a pulse of reoxygenation for 4 h. Results Proliferation, spheroid-formation and colony formation ability under varying O2 levels were investigated. Proliferation rate was not altered when cells were cultured in 2D models under hypoxic conditions. However, we observed that hypoxia enhanced in vitro formation of tumour-spheres and accelerated clonogenicity of NSCLC cell lines. In addition, cells exposed to hypoxia and reoxygenation conditions showed altered expression of epithelial-mesenchymal transition (EMT) related genes in NSCLC cell lines both at mRNA (AKT1, CAMK2NH1, DESI1, VIM, MAP1B, EGFR, ZEB1, HIF1α) and protein levels (Vimentin, Pan-cytokeratin). Conclusion Our data suggest that when investigating CTCs as a prognostic biomarker in NSCLC, it is also essential to take into consideration EMT status to obtain a comprehensive overview of CTCs in circulation.
Collapse
Affiliation(s)
- Joanna Kapeleris
- Centre for Biomedical Technologies, School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, 60 Musk Avenue, GPO Box 2434, Kelvin Grove, QLD, 4059, Australia.,Translational Research Institute, Woolloongabba, Brisbane, Australia
| | - Juliana Müller Bark
- Centre for Biomedical Technologies, School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, 60 Musk Avenue, GPO Box 2434, Kelvin Grove, QLD, 4059, Australia.,Translational Research Institute, Woolloongabba, Brisbane, Australia.,Saliva and Liquid Biopsy Translational Laboratory, Griffith Institute for Drug Discovery, Griffith University, 46 Don Yong Road, Nathan, Brisbane, Australia
| | - Shanon Ranjit
- Centre for Biomedical Technologies, School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, 60 Musk Avenue, GPO Box 2434, Kelvin Grove, QLD, 4059, Australia
| | - Derek Richard
- Cancer & Ageing Research Program, Queensland University of Technology, Translational Research Institute, Woolloongabba, Brisbane, Australia
| | - Ian Vela
- Australian Prostate Cancer Research Centre, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, QLD, Australia
| | - Kenneth O'Byrne
- Cancer & Ageing Research Program, Queensland University of Technology, Translational Research Institute, Woolloongabba, Brisbane, Australia.,Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - Chamindie Punyadeera
- Centre for Biomedical Technologies, School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, 60 Musk Avenue, GPO Box 2434, Kelvin Grove, QLD, 4059, Australia. .,Translational Research Institute, Woolloongabba, Brisbane, Australia. .,Saliva and Liquid Biopsy Translational Laboratory, Griffith Institute for Drug Discovery, Griffith University, 46 Don Yong Road, Nathan, Brisbane, Australia. .,Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.
| |
Collapse
|
232
|
Extracellular Vesicles Isolated From Hypoxia-Preconditioned Adipose-Derived Stem Cells Promote Hypoxia-Inducible Factor 1α-Mediated Neovascularization of Random Skin Flap in Rats. Ann Plast Surg 2022; 89:225-229. [PMID: 35943229 DOI: 10.1097/sap.0000000000003266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Random flaps are widely used for wound repair. However, flap necrosis is a serious complication leading to the failure of operation. Our previous study demonstrated a great proangiogenic potential of hypoxia-treated adipose-derived stem cells-extracellular vesicles (HT-ASC-EVs). Thus, we aim to evaluate the effect of HT-ASC-EVs in the survival and angiogenesis of random skin flap in rats. METHODS Adipose-derived stem cells-extracellular vesicles were respectively isolated from adipose-derived stem cell culture medium of 3 donors via ultracentrifugation. The expression of hypoxia-inducible factor 1α (HIF-1α) and proangiogenic potential of HT-ASC-EVs and ASC-EVs were compared by co-culturing with human umbilical vein endothelial cells. Forty male Sprague-Dawley rats were randomly divided into 3 group (n = 10/group). A 9 × 3-cm random skin flap was separated from the underlying fascia with both sacral arteries sectioned on each rat. The survival and angiogenesis of flaps treated by ASC-EVs or HT-ASC-EVs were also compared. Laser Doppler flowmetry and immunohistochemistry were used to evaluate skin perfusion and angiogenesis of skin flaps on postoperative day 7. RESULTS Hypoxia-treated adipose-derived stem cells-extracellular vesicles further improve the proliferation, migration, tube formation with upregulated HIF-1α, and VEGF expression of human umbilical vein endothelial cells in vitro, compared with ASC-EVs. In vivo, postoperatively injecting HT-ASC-EVs suppressed necrosis rate (29.1 ± 2.8% vs 59.2 ± 2.1%) and promoted the angiogenesis of skin flap including improved skin perfusion (803.2 ± 24.3 vs 556.3 ± 26.7 perfusion unit), increased number of CD31-positive cells, and upregulated expression of HIF-1α in vascular endothelium on postoperative day 7, compared with ASC-EVs. CONCLUSIONS Intradermal injecting HT-ASC-EVs improve the survival of random skin flap by promoting HIF-1α-mediated angiogenesis in rat model.
Collapse
|
233
|
Carrasco-Rozas A, Fernández-Simón E, Suárez-Calvet X, Piñol-Jurado P, Alonso-Pérez J, de Luna N, Schoser B, Meinke P, Domínguez-González C, Hernández-Laín A, Paradas C, Rivas E, Illa I, Olivé M, Gallardo E, Díaz-Manera J. BNIP3 Is Involved in Muscle Fiber Atrophy in Late-Onset Pompe Disease Patients. THE AMERICAN JOURNAL OF PATHOLOGY 2022; 192:1151-1166. [PMID: 35605642 DOI: 10.1016/j.ajpath.2022.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/25/2022] [Accepted: 05/04/2022] [Indexed: 11/25/2022]
Abstract
Late-onset Pompe disease (LOPD) is a rare genetic disorder produced by mutations in the GAA gene and is characterized by progressive muscle weakness. LOPD muscle biopsies show accumulation of glycogen along with the autophagic vacuoles associated with atrophic muscle fibers. The expression of molecules related to muscle fiber atrophy in muscle biopsies of LOPD patients was studied using immunofluorescence and real-time PCR. BCL2 and adenovirus E1B 19-kDa interacting protein 3 (BNIP3), a well-known atrogene, was identified as a potential mediator of muscle fiber atrophy in LOPD muscle biopsies. Vacuolated fibers in LOPD patient muscle biopsies were smaller than nonvacuolated fibers and expressed BNIP3. The current data suggested that BNIP3 expression is regulated by inhibition of the AKT-mammalian target of rapamycin pathway, leading to phosphorylation of Unc-51 like autophagy activating kinase 1 (ULK1) at Ser317 by AMP-activated protein kinase. Myoblasts and myotubes obtained from LOPD patients and age-matched controls were studied to confirm these results using different molecular techniques. Myotubes derived from LOPD patients were likewise smaller and expressed BNIP3. Conclusively, transfection of BNIP3 into control myotubes led to myotube atrophy. These findings suggest a cascade that starts with the inhibition of the AKT-mammalian target of rapamycin pathway and activation of BNIP3 expression, leading to progressive muscle fiber atrophy. These results open the door to potential new treatments targeting BNIP3 to reduce its deleterious effects on muscle fiber atrophy in Pompe disease.
Collapse
Affiliation(s)
- Ana Carrasco-Rozas
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Esther Fernández-Simón
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; John Walton Muscular Dystrophy Research Center, Newcastle University Translational and Clinical Research Institute, Newcastle Upon Tyne, United Kingdom
| | - Xavier Suárez-Calvet
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain
| | - Patricia Piñol-Jurado
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; John Walton Muscular Dystrophy Research Center, Newcastle University Translational and Clinical Research Institute, Newcastle Upon Tyne, United Kingdom
| | - Jorge Alonso-Pérez
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Noemí de Luna
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain
| | - Benedikt Schoser
- Friedrich-Baur-Institute, Department of Neurology, LMU Klinikum, Munich, Germany
| | - Peter Meinke
- Friedrich-Baur-Institute, Department of Neurology, LMU Klinikum, Munich, Germany
| | - Cristina Domínguez-González
- Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain; Department of Neurology, Neuromuscular Unit, 12 de Octubre University Hospital, Madrid, Spain; Research Institute of Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Aurelio Hernández-Laín
- Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain; Research Institute of Hospital 12 de Octubre (i+12), Madrid, Spain; Department of Pathology (Neuropathology), 12 de Octubre University Hospital, Madrid, Spain
| | - Carmen Paradas
- Neuromuscular Disorders Unit, Department of Neurology, Instituto de Biomedicina de Sevilla, Hospital U. Virgen del Rocío/Centro Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain; Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Eloy Rivas
- Department of Pathology, Instituto de Biomedicina de Sevilla, Hospital U. Virgen del Rocío/Centro Superior de Investigaciones Científicas/Universidad de Sevilla, Sevilla, Spain
| | - Isabel Illa
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain
| | - Montse Olivé
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain
| | - Eduard Gallardo
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain.
| | - Jordi Díaz-Manera
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau and Biomedical Research Institute Sant Pau, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; John Walton Muscular Dystrophy Research Center, Newcastle University Translational and Clinical Research Institute, Newcastle Upon Tyne, United Kingdom; Centro de Investigaciones Biomédicas en Red en Enfermedades Raras (CIBERER), Madrid, Spain.
| |
Collapse
|
234
|
Hersh AM, Gaitsch H, Alomari S, Lubelski D, Tyler BM. Molecular Pathways and Genomic Landscape of Glioblastoma Stem Cells: Opportunities for Targeted Therapy. Cancers (Basel) 2022; 14:3743. [PMID: 35954407 PMCID: PMC9367289 DOI: 10.3390/cancers14153743] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 02/01/2023] Open
Abstract
Glioblastoma (GBM) is an aggressive tumor of the central nervous system categorized by the World Health Organization as a Grade 4 astrocytoma. Despite treatment with surgical resection, adjuvant chemotherapy, and radiation therapy, outcomes remain poor, with a median survival of only 14-16 months. Although tumor regression is often observed initially after treatment, long-term recurrence or progression invariably occurs. Tumor growth, invasion, and recurrence is mediated by a unique population of glioblastoma stem cells (GSCs). Their high mutation rate and dysregulated transcriptional landscape augment their resistance to conventional chemotherapy and radiation therapy, explaining the poor outcomes observed in patients. Consequently, GSCs have emerged as targets of interest in new treatment paradigms. Here, we review the unique properties of GSCs, including their interactions with the hypoxic microenvironment that drives their proliferation. We discuss vital signaling pathways in GSCs that mediate stemness, self-renewal, proliferation, and invasion, including the Notch, epidermal growth factor receptor, phosphatidylinositol 3-kinase/Akt, sonic hedgehog, transforming growth factor beta, Wnt, signal transducer and activator of transcription 3, and inhibitors of differentiation pathways. We also review epigenomic changes in GSCs that influence their transcriptional state, including DNA methylation, histone methylation and acetylation, and miRNA expression. The constituent molecular components of the signaling pathways and epigenomic regulators represent potential sites for targeted therapy, and representative examples of inhibitory molecules and pharmaceuticals are discussed. Continued investigation into the molecular pathways of GSCs and candidate therapeutics is needed to discover new effective treatments for GBM and improve survival.
Collapse
Affiliation(s)
- Andrew M. Hersh
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (H.G.); (S.A.); (D.L.)
| | - Hallie Gaitsch
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (H.G.); (S.A.); (D.L.)
- NIH Oxford-Cambridge Scholars Program, Wellcome—MRC Cambridge Stem Cell Institute and Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 1TN, UK
| | - Safwan Alomari
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (H.G.); (S.A.); (D.L.)
| | - Daniel Lubelski
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (H.G.); (S.A.); (D.L.)
| | - Betty M. Tyler
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (H.G.); (S.A.); (D.L.)
| |
Collapse
|
235
|
Abu el Maaty MA, Terzic J, Keime C, Rovito D, Lutzing R, Yanushko D, Parisotto M, Grelet E, Namer IJ, Lindner V, Laverny G, Metzger D. Hypoxia-mediated stabilization of HIF1A in prostatic intraepithelial neoplasia promotes cell plasticity and malignant progression. SCIENCE ADVANCES 2022; 8:eabo2295. [PMID: 35867798 PMCID: PMC9307253 DOI: 10.1126/sciadv.abo2295] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Prostate cancer (PCa) is a leading cause of cancer-related deaths. The slow evolution of precancerous lesions to malignant tumors provides a broad time frame for preventing PCa. To characterize prostatic intraepithelial neoplasia (PIN) progression, we conducted longitudinal studies on Pten(i)pe-/- mice that recapitulate prostate carcinogenesis in humans. We found that early PINs are hypoxic and that hypoxia-inducible factor 1 alpha (HIF1A) signaling is activated in luminal cells, thus enhancing malignant progression. Luminal HIF1A dampens immune surveillance and drives luminal plasticity, leading to the emergence of cells that overexpress Transglutaminase 2 (TGM2) and have impaired androgen signaling. Elevated TGM2 levels in patients with PCa are associated with shortened progression-free survival after prostatectomy. Last, we show that pharmacologically inhibiting HIF1A impairs cell proliferation and induces apoptosis in PINs. Therefore, our study demonstrates that HIF1A is a target for PCa prevention and that TGM2 is a promising prognostic biomarker of early relapse after prostatectomy.
Collapse
Affiliation(s)
- Mohamed A. Abu el Maaty
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Julie Terzic
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Céline Keime
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Daniela Rovito
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Régis Lutzing
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Darya Yanushko
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Maxime Parisotto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Elise Grelet
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
| | - Izzie Jacques Namer
- Université de Strasbourg, Strasbourg, France
- ICube, CNRS, UMR 7357, Strasbourg, France
| | - Véronique Lindner
- Département de Pathologie, Les Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Gilles Laverny
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
- Corresponding author. (D.M.); (G.L.)
| | - Daniel Metzger
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France
- Université de Strasbourg, Strasbourg, France
- Corresponding author. (D.M.); (G.L.)
| |
Collapse
|
236
|
Kim J, Lee H, Yi SJ, Kim K. Gene regulation by histone-modifying enzymes under hypoxic conditions: a focus on histone methylation and acetylation. Exp Mol Med 2022; 54:878-889. [PMID: 35869366 PMCID: PMC9355978 DOI: 10.1038/s12276-022-00812-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/30/2022] [Accepted: 05/10/2022] [Indexed: 12/12/2022] Open
Abstract
Oxygen, which is necessary for sustaining energy metabolism, is consumed in many biochemical reactions in eukaryotes. When the oxygen supply is insufficient for maintaining multiple homeostatic states at the cellular level, cells are subjected to hypoxic stress. Hypoxia induces adaptive cellular responses mainly through hypoxia-inducible factors (HIFs), which are stabilized and modulate the transcription of various hypoxia-related genes. In addition, many epigenetic regulators, such as DNA methylation, histone modification, histone variants, and adenosine triphosphate-dependent chromatin remodeling factors, play key roles in gene expression. In particular, hypoxic stress influences the activity and gene expression of histone-modifying enzymes, which controls the posttranslational modification of HIFs and histones. This review covers how histone methylation and histone acetylation enzymes modify histone and nonhistone proteins under hypoxic conditions and surveys the impact of epigenetic modifications on gene expression. In addition, future directions in this area are discussed. New sequencing technologies are revealing how cells respond to hypoxia, insufficient oxygen, by managing gene activation. In multicellular organisms, gene activation is managed by how tightly a section of DNA is wound around proteins called histones; genes in tightly packed regions are inaccessible and inactive, whereas those in looser regions can be activated. Kyunghwan Kim, Sun-Ju Yi, and co-workers at Chungbuk National University in South Korea have reviewed recent data on how cells regulate gene activity under hypoxic conditions. Advances in sequencing technology have allowed genome-wide studies of how hypoxia affects DNA structure and gene activation, revealing that gene-specific modifications may be more important than genome-wide modifications. Hypoxia is implicated in several diseases, such as cancer and chronic metabolic diseases, and a better understanding of how it affects gene activation may help identify new treatments for hypoxia-related diseases.
Collapse
|
237
|
Harms FA, Ubbink R, de Wijs CJ, Ligtenberg MP, ter Horst M, Mik EG. Mitochondrial Oxygenation During Cardiopulmonary Bypass: A Pilot Study. Front Med (Lausanne) 2022; 9:785734. [PMID: 35924039 PMCID: PMC9339625 DOI: 10.3389/fmed.2022.785734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 06/08/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveAdequate oxygenation is essential for the preservation of organ function during cardiac surgery and cardiopulmonary bypass (CPB). Both hypoxia and hyperoxia result in undesired outcomes, and a narrow window for optimal oxygenation exists. Current perioperative monitoring techniques are not always sufficient to monitor adequate oxygenation. The non-invasive COMET® monitor could be a tool to monitor oxygenation by measuring the cutaneous mitochondrial oxygen tension (mitoPO2). This pilot study examines the feasibility of cutaneous mitoPO2 measurements during cardiothoracic procedures. Cutaneous mitoPO2 will be compared to tissue oxygenation (StO2) as measured by near-infrared spectroscopy.Design and MethodThis single-center observational study examined 41 cardiac surgery patients requiring CPB. Preoperatively, patients received a 5-aminolevulinic acid plaster on the upper arm to enable mitoPO2 measurements. After induction of anesthesia, both cutaneous mitoPO2 and StO2 were measured throughout the procedure. The patients were observed until discharge for the development of acute kidney insufficiency (AKI).ResultsCutaneous mitoPO2 was successfully measured in all patients and was 63.5 [40.0–74.8] mmHg at the surgery start and decreased significantly (p < 0.01) to 36.4 [18.4–56.0] mmHg by the end of the CPB run. StO2 at the surgery start was 80.5 [76.8–84.3]% and did not change significantly. Cross-clamping of the aorta and the switch to non-pulsatile flow resulted in a median cutaneous mitoPO2 decrease of 7 mmHg (p < 0.01). The cessation of the aortic cross-clamping period resulted in an increase of 4 mmHg (p < 0.01). Totally, four patients developed AKI and had a lower preoperative eGFR of 52 vs. 81 ml/min in the non-AKI group. The AKI group spent 32% of the operation time with a cutaneous mitoPO2 value under 20 mmHg as compared to 8% in the non-AKI group.ConclusionThis pilot study illustrated the feasibility of measuring cutaneous mitoPO2 using the COMET® monitor during cardiothoracic procedures. Moreover, in contrast to StO2, mitoPO2 decreased significantly with the increasing CPB run time. Cutaneous mitoPO2 also significantly decreased during the aortic cross-clamping period and increased upon the release of the clamp, but StO2 did not. This emphasized the sensitivity of cutaneous mitoPO2 to detect circulatory and microvascular changes.
Collapse
|
238
|
Yadav S, Dwivedi A, Tripathi A. Biology of macrophage fate decision: Implication in inflammatory disorders. Cell Biol Int 2022; 46:1539-1556. [PMID: 35842768 DOI: 10.1002/cbin.11854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 05/04/2022] [Accepted: 06/18/2022] [Indexed: 11/11/2022]
Abstract
The activation of immune cells in response to stimuli present in their microenvironment is regulated by their metabolic profile. Unlike the signal transduction events, which overlap to a huge degree in diverse cellular processes, the metabolome of a cell reflects a more precise picture of cell physiology and function. Different factors governing the cellular metabolome include receptor signaling, macro and micronutrients, normoxic and hypoxic conditions, energy needs, and biomass demand. Macrophages have enormous plasticity and can perform diverse functions depending upon their phenotypic state. This review presents recent updates on the cellular metabolome and molecular patterns associated with M1 and M2 macrophages, also termed "classically activated macrophages" and "alternatively activated macrophages," respectively. M1 macrophages are proinflammatory in nature and predominantly Th1-specific immune responses induce their polarization. On the contrary, M2 macrophages are anti-inflammatory in nature and primarily participate in Th2-specific responses. Interestingly, the same macrophage cell can adapt to the M1 or M2 phenotype depending upon the clues from its microenvironment. We elaborate on the various tissue niche-specific factors, which govern macrophage metabolism and heterogeneity. Furthermore, the current review provides an in-depth account of deregulated macrophage metabolism associated with pathological disorders such as cancer, obesity, and atherosclerosis. We further highlight significant differences in various metabolic pathways governing the cellular bioenergetics and their impact on macrophage effector functions and associated disorders.
Collapse
Affiliation(s)
- Sarika Yadav
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Ashish Dwivedi
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Anurag Tripathi
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| |
Collapse
|
239
|
Konieczny P, Xing Y, Sidhu I, Subudhi I, Mansfield KP, Hsieh B, Biancur DE, Larsen SB, Cammer M, Li D, Landén NX, Loomis C, Heguy A, Tikhonova AN, Tsirigos A, Naik S. Interleukin-17 governs hypoxic adaptation of injured epithelium. Science 2022; 377:eabg9302. [PMID: 35709248 PMCID: PMC9753231 DOI: 10.1126/science.abg9302] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Mammalian cells autonomously activate hypoxia-inducible transcription factors (HIFs) to ensure survival in low-oxygen environments. We report here that injury-induced hypoxia is insufficient to trigger HIF1α in damaged epithelium. Instead, multimodal single-cell and spatial transcriptomics analyses and functional studies reveal that retinoic acid-related orphan receptor γt+ (RORγt+) γδ T cell-derived interleukin-17A (IL-17A) is necessary and sufficient to activate HIF1α. Protein kinase B (AKT) and extracellular signal-regulated kinase 1/2 (ERK1/2) signaling proximal of IL-17 receptor C (IL-17RC) activates mammalian target of rapamycin (mTOR) and consequently HIF1α. The IL-17A-HIF1α axis drives glycolysis in wound front epithelia. Epithelial-specific loss of IL-17RC, HIF1α, or blockade of glycolysis derails repair. Our findings underscore the coupling of inflammatory, metabolic, and migratory programs to expedite epithelial healing and illuminate the immune cell-derived inputs in cellular adaptation to hypoxic stress during repair.
Collapse
Affiliation(s)
- Piotr Konieczny
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
| | - Yue Xing
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA.,Corresponding author. (S.N.); (Y.X.)
| | - Ikjot Sidhu
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA.,Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Ipsita Subudhi
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
| | - Kody P. Mansfield
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
| | - Brandon Hsieh
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
| | - Douglas E. Biancur
- Department of Radiation Oncology and Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - Samantha B. Larsen
- Neuroscience Institute, New York University Langone Health, New York, NY 10016, USA
| | - Michael Cammer
- Microscopy Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Dongqing Li
- Dermatology and Venereology Division, Department of Medicine, Solna Center for Molecular Medicine, Ming Wai Lau Centre for Reparative Medicine, Karolinska Institute, 17176 Stockholm, Sweden
| | - Ning Xu Landén
- Dermatology and Venereology Division, Department of Medicine, Solna Center for Molecular Medicine, Ming Wai Lau Centre for Reparative Medicine, Karolinska Institute, 17176 Stockholm, Sweden
| | - Cynthia Loomis
- Experimental Pathology Research Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Adriana Heguy
- Genome Technology Center, New York University Langone Health, New York, NY 10016, USA
| | - Anastasia N. Tikhonova
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 2M9, Canada
| | - Aristotelis Tsirigos
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA.,Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Shruti Naik
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA.,Department of Medicine, Ronald O. Perelman Department of Dermatology, and Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA.,Corresponding author. (S.N.); (Y.X.)
| |
Collapse
|
240
|
Hypoxia signaling in human health and diseases: implications and prospects for therapeutics. Signal Transduct Target Ther 2022; 7:218. [PMID: 35798726 PMCID: PMC9261907 DOI: 10.1038/s41392-022-01080-1] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 06/17/2022] [Accepted: 06/23/2022] [Indexed: 02/07/2023] Open
Abstract
Molecular oxygen (O2) is essential for most biological reactions in mammalian cells. When the intracellular oxygen content decreases, it is called hypoxia. The process of hypoxia is linked to several biological processes, including pathogenic microbe infection, metabolic adaptation, cancer, acute and chronic diseases, and other stress responses. The mechanism underlying cells respond to oxygen changes to mediate subsequent signal response is the central question during hypoxia. Hypoxia-inducible factors (HIFs) sense hypoxia to regulate the expressions of a series of downstream genes expression, which participate in multiple processes including cell metabolism, cell growth/death, cell proliferation, glycolysis, immune response, microbe infection, tumorigenesis, and metastasis. Importantly, hypoxia signaling also interacts with other cellular pathways, such as phosphoinositide 3-kinase (PI3K)-mammalian target of rapamycin (mTOR) signaling, nuclear factor kappa-B (NF-κB) pathway, extracellular signal-regulated kinases (ERK) signaling, and endoplasmic reticulum (ER) stress. This paper systematically reviews the mechanisms of hypoxia signaling activation, the control of HIF signaling, and the function of HIF signaling in human health and diseases. In addition, the therapeutic targets involved in HIF signaling to balance health and diseases are summarized and highlighted, which would provide novel strategies for the design and development of therapeutic drugs.
Collapse
|
241
|
Han Y, Koohi-Moghadam M, Chen Q, Zhang L, Chopra H, Zhang J, Dissanayaka WL. HIF-1α Stabilization Boosts Pulp Regeneration by Modulating Cell Metabolism. J Dent Res 2022; 101:1214-1226. [PMID: 35798352 DOI: 10.1177/00220345221091528] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Stem cell-based therapeutics is a promising strategy in dental pulp regeneration. However, low cell viability after transplantation in vivo due to the ischemic microenvironment is still a critical challenge for future clinical application. With the aim of improving postimplantation cell survival and pulp tissue regeneration, stem cells from human exfoliated deciduous teeth (SHED) were preconditioned to a hypoxic condition by hypoxia-inducible factor 1α (HIF-1α) stabilization via knockdown of prolyl hydroxylase domain-containing protein 2 (PHD2) using lentiviral short hairpin RNA. HIF-1α-stabilized SHED were encapsulated in PuraMatrix hydrogel, injected into root canals of human tooth fragments, and implanted in the subcutaneous space of immunodeficient mice. After 28 d, enhanced dental pulp-like tissue formation was observed with a significantly higher level of vascularization, which could be attributed to both endothelial differentiation of SHED and recruitment of host blood vessels. Furthermore, dentin-like tissue formation in vivo and accelerated odontogenic/osteogenic differentiation both in vivo and in vitro were observed. At 7 d postimplantation, significantly less DNA damage and higher Ki67 expression were detected in the HIF-1α-stabilized SHED group compared with the control SHED. Accordingly, cell viability assay and staining for Ki67 and apoptotic cells in vitro showed that HIF-1α stabilization could decrease cell apoptosis and enhance cell survival significantly. We demonstrated that PI3K/AKT pathway activation had resulted in low caspase 3 expression in HIF-1α-stabilized SHED in hypoxic conditions. Furthermore, we found that HIF-1α-induced cell survival could also be attributed to the upregulated expression of PDK1, HK2, and Glut1, which contributes to the maintenance of reactive oxygen species homeostasis and metabolic adaptation in hypoxia. In addition, we identified Smad7 as 1 of the top 3 upregulated genes through RNA sequencing in HIF-1α-stabilized SHED and demonstrated its essential role in HK2 and Glut1 upregulation. Taken together, HIF-1α stabilization enhances cell survival of SHED through modulating various target genes and potential signaling pathways, as well as odontogenic tissue formation during dental pulp regeneration, which could benefit stem cell-based therapy in general.
Collapse
Affiliation(s)
- Y Han
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Koohi-Moghadam
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Q Chen
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - L Zhang
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - H Chopra
- Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - W L Dissanayaka
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
242
|
The Update of Fetal Growth Restriction Associated with Biomarkers. MATERNAL-FETAL MEDICINE 2022. [DOI: 10.1097/fm9.0000000000000156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
243
|
Hypoxia damages endothelial cell angiogenic function by reducing the Ca2+ restoring ability of the endoplasmic reticulum. Biochem Biophys Res Commun 2022; 626:142-150. [DOI: 10.1016/j.bbrc.2022.07.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022]
|
244
|
Zhang S, Ma Q, Wu X, Chen P. LncRNA HOTTIP PROMOTES OVARIAN CANCER CELL INVASION AND METASTASIS BY STABILIZING HIF-1α IN THE ANOXIC CELLULAR MICROENVIRONMENT. ACTA ENDOCRINOLOGICA (BUCHAREST, ROMANIA : 2005) 2022; 18:263-270. [PMID: 36699159 PMCID: PMC9867806 DOI: 10.4183/aeb.2022.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Background The high recurrence rate and low survival rate of ovarian cancer (OC) patients are closely related to an anoxic environment. We aim to study the mechanism of long non-coding RNA (lncRNA) HOXA transcript at the distal tip (HOTTIP) on hypoxia ovarian cancer cells (OCC) and its mechanism was investigated. Methods Knockdown and overexpression of HOTTIP in human OCC (SKOV-3, OVCAR3) were performed. The expression levels of HOTTIP and HIF-1α were monitored by qRT-PCR and WB. Transwell was conducted to validate the cell migration and invasion. ELISA was performed to calculate VEGF concentration in cells. Cell viability was monitored by CCK-8. Cell apoptosis and cycle were tested by flow cytometry. RNA pull-down was used to analyze the interaction between HIF-1α and HOTTIP. Results HOTTIP was highly expressed in OCC. After HOTTIP knockdown, HIF-1α expression and VEGF concentration in OCC were decreased. Cell migration, invasion, and cell viability were decreased. Cell apoptosis rate and G0/G1 phase cells were increased. RNA pull-down indicated a direct interaction between HIF-1α and HOTTIP. Conclusions HOTTIP formed a positive feedback loop with HIF-1α to promote the development and metastasis of hypoxia ovarian cancer. This study provided theoretical support for the development of new OC treatment strategies.
Collapse
Affiliation(s)
- S. Zhang
- Department of Gynecology and Obstetrics, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Q. Ma
- Department of Gynecology and Obstetrics, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - X. Wu
- Department of Pathology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
- Central South University - Department of Pathology, School of Basic Medical Science, Changsha, Hunan, China
| | - P. Chen
- Department of Gynecology and Obstetrics, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| |
Collapse
|
245
|
Angom RS, Kulkarni T, Wang E, Kumar Dutta S, Bhattacharya S, Das P, Mukhopadhyay D. Vascular Endothelial Growth Factor Receptor-1 Modulates Hypoxia-Mediated Endothelial Senescence and Cellular Membrane Stiffness via YAP-1 Pathways. Front Cell Dev Biol 2022; 10:903047. [PMID: 35846360 PMCID: PMC9283904 DOI: 10.3389/fcell.2022.903047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022] Open
Abstract
Hypoxia-induced endothelial cell (EC) dysfunction has been implicated as potential initiators of different pathogenesis, including Alzheimer’s disease and vascular dementia. However, in-depth structural, mechanical, and molecular mechanisms leading to EC dysfunction and pathology need to be revealed. Here, we show that ECs exposed to hypoxic conditions readily enter a senescence phenotype. As expected, hypoxia upregulated the expression of vascular endothelial growth factor (VEGFs) and its receptors (VEGFRs) in the ECs. Interestingly, Knockdown of VEGFR-1 expression prior to hypoxia exposure prevented EC senescence, suggesting an important role of VEGFR-1 expression in the induction of EC senescence. Using atomic force microscopy, we showed that senescent ECs had a flattened cell morphology, decreased membrane ruffling, and increased membrane stiffness, demonstrating unique morphological and nanomechanical signatures. Furthermore, we show that hypoxia inhibited the Hippo pathway Yes-associated protein (YAP-1) expression and knockdown of YAP-1 induced senescence in the ECs, supporting a key role of YAP-1 expression in the induction of EC senescence. And importantly, VEGFR-1 Knockdown in the ECs modulated YAP-1 expression, suggesting a novel VEGFR-1-YAP-1 axis in the induction of hypoxia-mediated EC senescence. In conclusion, VEGFR-1 is overexpressed in ECs undergoing hypoxia-mediated senescence, and the knockdown of VEGFR-1 restores cellular structural and nanomechanical integrity by recovering YAP-1 expression.
Collapse
Affiliation(s)
| | - Tanmay Kulkarni
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
| | - Enfeng Wang
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
| | - Shamit Kumar Dutta
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
| | - Santanu Bhattacharya
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Jacksonville, FL, United States
| | - Pritam Das
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Jacksonville, FL, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Jacksonville, FL, United States
- *Correspondence: Debabrata Mukhopadhyay,
| |
Collapse
|
246
|
Hayek I, Szperlinski M, Lührmann A. Coxiella burnetii Affects HIF1α Accumulation and HIF1α Target Gene Expression. Front Cell Infect Microbiol 2022; 12:867689. [PMID: 35755850 PMCID: PMC9218251 DOI: 10.3389/fcimb.2022.867689] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/21/2022] [Indexed: 11/23/2022] Open
Abstract
HIF1α is an important transcription factor regulating not only cellular responses to hypoxia, but also anti-infective defense responses. We recently showed that HIF1α hampers replication of the obligate intracellular pathogen Coxiella burnetii which causes the zoonotic disease Q fever. Prior to development of chronic Q fever, it is assumed that the bacteria enter a persistent state. As HIF1α and/or hypoxia might be involved in the induction of C. burnetii persistence, we analyzed the role of HIF1α and hypoxia in the interaction of macrophages with C. burnetii to understand how the bacteria manipulate HIF1α stability and activity. We demonstrate that a C. burnetii-infection initially induces HIF1α stabilization, which decreases then over the course of an infection. This reduction depends on bacterial viability and a functional type IV secretion system (T4SS). While neither the responsible T4SS effector protein(s) nor the molecular mechanism leading to this partial HIF1α destabilization have been identified, our results demonstrate that C. burnetii influences the expression of HIF1α target genes in multiple ways. Therefore, a C. burnetii infection promotes HIF1α-mediated upregulation of several metabolic target genes; affects apoptosis-regulators towards a more pro-apoptotic signature; and under hypoxic conditions, shifts the ratio of the inflammatory genes analyzed towards a pro-inflammatory profile. Taken together, C. burnetii modulates HIF1α in a still elusive manner and alters the expression of multiple HIF1α target genes.
Collapse
Affiliation(s)
- Inaya Hayek
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie and Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Manuela Szperlinski
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie and Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Anja Lührmann
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie and Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
247
|
Jing L, Wu N, Zhang J, Da Q, Ma H. Protective effect of 5,6,7,8-Tetrahydroxyflavone on high altitude cerebral edema in rats. Eur J Pharmacol 2022; 928:175121. [PMID: 35777443 DOI: 10.1016/j.ejphar.2022.175121] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 11/03/2022]
Abstract
High altitude cerebral edema (HACE) is a potentially life-threatening disease encountered at high altitudes. However, effective methods for HACE prophylaxis are limited. Convincing evidence confirms that oxidative stress induced by hypobaric hypoxia (HH) is one of the main factors that account for the development of HACE. 5,6,7,8-Tetrahydroxyflavone (THF), a flavone with four consecutive OH groups in ring A, exhibited excellent antioxidant activity in vitro and could attenuate HH induced injury in vivo. The aim of this study was to investigate the protective effect of THF against HACE and its underlying mechanisms. THF administration significantly suppressed HH induced oxidative stress by reducing the formation of hydrogen peroxide and malondialdehyde, by increasing the levels of glutathione and superoxide dismutase in brain tissue. Simultaneously, THF administration inhibited inflammatory responses by decreasing the levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6 in serum and brain tissue. In addition, THF administration mitigated the energy metabolism disorder induced by HACE as evidenced by decreased levels of lactic acid, lactate dehydrogenase and pyruvate kinase as well as increased ATP levels and ATPase activities. Furthermore, THF administration decreased the expression of matrix metalloproteinase-9, aquaporin 4, hypoxia-inducible factor-1α and vascular endothelial growth factor, which attenuated blood-brain barrier (BBB) disruption and brain edema. Additionally, THF administration improved HACE induced cognitive dysfunction. These results show that THF is a promising agent in the prevention and treatment of HACE.
Collapse
Affiliation(s)
- Linlin Jing
- Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China; Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China.
| | - Ningzi Wu
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Jie Zhang
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Qingyue Da
- Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China; Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China
| | - Huiping Ma
- Department of Pharmacy, The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, Gansu, 730050, China.
| |
Collapse
|
248
|
Han B, Meng Y, Tian H, Li C, Li Y, Gongbao C, Fan W, Ma R. Effects of Acute Hypoxic Stress on Physiological and Hepatic Metabolic Responses of Triploid Rainbow Trout (Oncorhynchus mykiss). Front Physiol 2022; 13:921709. [PMID: 35812328 PMCID: PMC9263268 DOI: 10.3389/fphys.2022.921709] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/08/2022] [Indexed: 11/26/2022] Open
Abstract
This experiment simulated the hypoxic environment caused by actual production operations in fish farming (i.e., catching, gathering, transferring, and weighting) to study the effects of acute hypoxic conditions on the physiological and metabolic responses of triploid rainbow trout (O. mykiss). Two groups of fish weighting 590 g were sampled in the normoxia group (dissolved oxygen above 7 mg/L) and hypoxia group (dissolved oxygen ranged from 2 to 5 mg/L for 10 min). The results showed that 1) regarding stress response, hypoxia increased plasma levels of cortisol, heat shock protein 70 (HSP-70), lysozyme, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and creatine phosphokinase (CPK); induced the expression of hepatic genes encoding nuclear factor erythroid 2 related factor 2 (Nrf2), interferon γ (IFN-γ) and interleukin-1β (IL-1β). 2) Regarding metabolism response, hypoxia increased plasma levels of globulin (GLOB), glucose (GLU), triglyceride (TG) and lactate dehydrogenase (LDH); upregulated the hepatic gene expression of phosphoenolpyruvate carboxykinase, (PEPCK), pyruvate dehydrogenase kinase (PDK1), acetyl-CoA carboxylase (ACC) and acetyl-CoA oxidase (ACO); downregulated the hepatic gene expression of carnitine palmitoyl transferase 1 (CPT1); and unchanged the expression of hepatic genes in glycolysis and autophagy. 3) In response to hypoxia-inducible factors (HIFs), the hepatic HIF-2α gene was activated in the hypoxia group, but HIF-1α gene expression remained unchanged. Thus, during acute hypoxic stress, triploid rainbow trout were in a defensive state, with an enhanced immune response and altered antioxidant status. Additionally, the hepatic mitochondrial oxidation of glucose- and lipid-derived carbon in trout was suppressed, and hepatic gluconeogenesis and lipid synthesis were activated, which might be regulated by the HIF-2α pathway.
Collapse
Affiliation(s)
- Buying Han
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- College of Eco-Environmental Engineering, Qinghai University, Xining, China
| | - Yuqiong Meng
- College of Eco-Environmental Engineering, Qinghai University, Xining, China
| | - Haining Tian
- College of Eco-Environmental Engineering, Qinghai University, Xining, China
| | - Changzhong Li
- College of Eco-Environmental Engineering, Qinghai University, Xining, China
| | - Yaopeng Li
- Qinghai Minze Longyangxia Ecological Aquaculture Co., Ltd., Longyangxia, China
| | - Caidan Gongbao
- Qinghai Minze Longyangxia Ecological Aquaculture Co., Ltd., Longyangxia, China
| | - Wenyan Fan
- Qinghai Minze Longyangxia Ecological Aquaculture Co., Ltd., Longyangxia, China
| | - Rui Ma
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
- *Correspondence: Rui Ma,
| |
Collapse
|
249
|
Jun SL, Sun J, Huo X, Feng Q, Li Y, Xie X, Geng S. Lipopolysaccharide reduces melanin synthesis in vitiligo melanocytes by regulating autophagy. Exp Dermatol 2022; 31:1579-1585. [PMID: 35733278 DOI: 10.1111/exd.14629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/07/2022] [Accepted: 06/18/2022] [Indexed: 11/30/2022]
Abstract
Vitiligo is an autoimmune-related disease with a complex aetiology that involves innate immunity. Toll-like receptors (TLRs) are important parts of innate immunity and are related to a variety of autoimmune diseases, including vitiligo, through an unknown mechanism. In this study, we found that the TLR4 gene expression was increased in blood samples of patients with advanced stage vitiligo, and then we evaluated the effect of TLR4 ligand lipopolysaccharide (LPS) on melanin synthesis in a vitiligo melanocyte cell line PIG3V and along with its mechanism. LPS suppressed melanin synthesis, downregulated the expression of melanin synthesis-related proteins, and activated autophagy in vitiligo melanocytes. Inhibiting autophagy with 3-methyladenine or chloroquine blocked these effects. This suggests that LPS inhibits skin pigmentation by modulating autophagy, thus providing novel insights into the pathogenesis of vitiligo.
Collapse
Affiliation(s)
- Sun Li Jun
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Jingying Sun
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Xueping Huo
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Qing Feng
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Yan Li
- Central Laboratory of Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Xin Xie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, Shaanxi, China
| | - Songmei Geng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| |
Collapse
|
250
|
Iacovelli R, Arduini D, Ciccarese C, Pierconti F, Strusi A, Piro G, Carbone C, Foschi N, Daniele G, Tortora G. Targeting hypoxia-inducible factor pathways in sporadic and Von Hippel-Lindau syndrome-related kidney cancers. Crit Rev Oncol Hematol 2022; 176:103750. [PMID: 35728738 DOI: 10.1016/j.critrevonc.2022.103750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/16/2022] [Accepted: 06/16/2022] [Indexed: 10/18/2022] Open
Abstract
Hereditary and sporadic renal cell carcinomas (RCCs) are often associated with Von Hippel-Lindau (VHL)-gene inactivation. Patients with VHL disease have an increased risk of RCC, leading to bilateral nephrectomy and dialysis. In patients with advanced RCC, no standard second-lines are available after progression to immune checkpoint inhibitors (ICIs), and new agents are required to manage progression. HIFs have emerged as a promising target for metastatic RCC patients who have progressed to ICI-based combinations, as well as for those with RCC and VHL syndrome where the goal is to delay surgery and/or and preserve kidney function and avoid dialysis. This review describes the available evidence supporting the use of the small-molecule HIF-2 alpha inhibitor, belzutifan (MK-6482), as well as other new anti-HIF molecules that have demonstrated significant efficacy in VHL disease-related RCCs as well as for sporadic RCC that has progressed after the use of ICI-based combinations.
Collapse
Affiliation(s)
- Roberto Iacovelli
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Daniela Arduini
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Chiara Ciccarese
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Francesco Pierconti
- Unit of Pathology, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy; Faculty of Medicine, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Alessandro Strusi
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Geny Piro
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Carmine Carbone
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Nazario Foschi
- Department of Urology, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Gennaro Daniele
- Phase 1 Unit, Fondazione Policlinico Universitario Agostino Gemelli, IRCCS, Rome, Italy
| | - Giampaolo Tortora
- Medical Oncology Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy; Faculty of Medicine, Università Cattolica del Sacro Cuore, Rome, Italy
| |
Collapse
|