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Billings FT, McIlroy DR, Shotwell MS, Lopez MG, Vaughn MT, Morse JL, Hennessey CJ, Wanderer JP, Semler MW, Rice TW, Wunsch H, Kheterpal S. Determinants and Practice Variability of Oxygen Administration during Surgery in the United States: A Retrospective Cohort Study. Anesthesiology 2024; 141:511-523. [PMID: 38759157 PMCID: PMC11321923 DOI: 10.1097/aln.0000000000005078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
BACKGROUND The best approaches to supplemental oxygen administration during surgery remain unclear, which may contribute to variation in practice. This study aimed to assess determinants of oxygen administration and its variability during surgery. METHODS Using multivariable linear mixed-effects regression, the study measured the associations between intraoperative fraction of inspired oxygen and patient, procedure, medical center, anesthesiologist, and in-room anesthesia provider factors in surgical cases of 120 min or longer in adult patients who received general anesthesia with tracheal intubation and were admitted to the hospital after surgery between January 2016 and January 2019 at 42 medical centers across the United States participating in the Multicenter Perioperative Outcomes Group data registry. RESULTS The sample included 367,841 cases (median [25th, 75th] age, 59 [47, 69] yr; 51.1% women; 26.1% treated with nitrous oxide) managed by 3,836 anesthesiologists and 15,381 in-room anesthesia providers. Median (25th, 75th) fraction of inspired oxygen was 0.55 (0.48, 0.61), with 6.9% of cases less than 0.40 and 8.7% greater than 0.90. Numerous patient and procedure factors were statistically associated with increased inspired oxygen, notably advanced American Society of Anesthesiologists classification, heart disease, emergency surgery, and cardiac surgery, but most factors had little clinical significance (less than 1% inspired oxygen change). Overall, patient factors only explained 3.5% (95% CI, 3.5 to 3.5%) of the variability in oxygen administration, and procedure factors 4.4% (95% CI, 4.2 to 4.6%). Anesthesiologist explained 7.7% (95% CI, 7.2 to 8.2%) of the variability in oxygen administration, in-room anesthesia provider 8.1% (95% CI, 7.8 to 8.4%), medical center 23.3% (95% CI, 22.4 to 24.2%), and 53.0% (95% CI, 52.4 to 53.6%) was unexplained. CONCLUSIONS Among adults undergoing surgery with anesthesia and tracheal intubation, supplemental oxygen administration was variable and appeared arbitrary. Most patient and procedure factors had statistical but minor clinical associations with oxygen administration. Medical center and anesthesia provider explained significantly more variability in oxygen administration than patient or procedure factors. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Frederic T Billings
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - David R McIlroy
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Matthew S Shotwell
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Marcos G Lopez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Michelle T Vaughn
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan
| | - Jennifer L Morse
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Cassandra J Hennessey
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jonathan P Wanderer
- Departments of Anesthesiology and Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Matthew W Semler
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Todd W Rice
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Hannah Wunsch
- Department of Anesthesiology, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, New York
| | - Sachin Kheterpal
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan
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Di Mattia M, Sallese M, Neri M, Lopetuso LR. Hypoxic Functional Regulation Pathways in the GI Tract: Focus on the HIF-1α and Microbiota's Crosstalk. Inflamm Bowel Dis 2024; 30:1406-1418. [PMID: 38484200 DOI: 10.1093/ibd/izae046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Indexed: 08/02/2024]
Abstract
Hypoxia is an essential gastrointestinal (GI) tract phenomenon that influences both physiologic and pathologic states. Hypoxia-inducible factors (HIFs), the primary drivers of cell adaptation to low-oxygen environments, have been identified as critical regulators of gut homeostasis: directly, through the induction of different proteins linked to intestinal barrier stabilization (ie, adherent proteins, tight junctions, mucins, integrins, intestinal trefoil factor, and adenosine); and indirectly, through the regulation of several immune cell types and the modulation of autophagy and inflammatory processes. Furthermore, hypoxia and HIF-related sensing pathways influence the delicate relationship existing between bacteria and mammalian host cells. In turn, gut commensals establish and maintain the physiologic hypoxia of the GI tract and HIF-α expression. Based on this premise, the goals of this review are to (1) highlight hypoxic molecular pathways in the GI tract, both in physiologic and pathophysiologic settings, such as inflammatory bowel disease; and (2) discuss a potential strategy for ameliorating gut-related disorders, by targeting HIF signaling, which can alleviate inflammatory processes, restore autophagy correct mechanisms, and benefit the host-microbiota equilibrium.
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Affiliation(s)
- Miriam Di Mattia
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Michele Sallese
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Matteo Neri
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Loris Riccardo Lopetuso
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Medicina Interna e Gastroenterologia, CEMAD Centro Malattie dell'Apparato Digerente, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario Gemelli IRCCS, Rome, Italy
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Al-Ostoot FH, Salah S, Khanum SA. An Overview of Cancer Biology, Pathophysiological Development and It's Treatment Modalities: Current Challenges of Cancer anti-Angiogenic Therapy. Cancer Invest 2024; 42:559-604. [PMID: 38874308 DOI: 10.1080/07357907.2024.2361295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 11/22/2021] [Accepted: 05/25/2024] [Indexed: 06/15/2024]
Abstract
A number of conditions and factors can cause the transformation of normal cells in the body into malignant tissue by changing the normal functions of a wide range of regulatory, apoptotic, and signal transduction pathways. Despite the current deficiency in fully understanding the mechanism of cancer action accurately and clearly, numerous genes and proteins that are causally involved in the initiation, progression, and metastasis of cancer have been identified. But due to the lack of space and the abundance of details on this complex topic, we have emphasized here more recent advances in our understanding of the principles implied tumor cell transformation, development, invasion, angiogenesis, and metastasis. Inhibition of angiogenesis is a significant strategy for the treatment of various solid tumors, that essentially depend on cutting or at least limiting the supply of blood to micro-regions of tumors, leading to pan-hypoxia and pan-necrosis inside solid tumor tissues. Researchers have continued to enhance the efficiency of anti-angiogenic drugs over the past two decades, to identify their potential in the drug interaction, and to discover reasonable interpretations for possible resistance to treatment. In this review, we have discussed an overview of cancer history and recent methods use in cancer therapy, focusing on anti-angiogenic inhibitors targeting angiogenesis formation. Further, this review has explained the molecular mechanism of action of these anti-angiogenic inhibitors in various tumor types and their limitations use. In addition, we described the synergistic mechanisms of immunotherapy and anti-angiogenic therapy and summarizes current clinical trials of these combinations. Many phase III trials found that combining immunotherapy and anti-angiogenic therapy improved survival. Therefore, targeting the source supply of cancer cells to grow and spread with new anti-angiogenic agents in combination with different conventional therapy is a novel method to reduce cancer progression. The aim of this paper is to overview the varying concepts of cancer focusing on mechanisms involved in tumor angiogenesis and provide an overview of the recent trends in anti-angiogenic strategies for cancer therapy.
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Affiliation(s)
- Fares Hezam Al-Ostoot
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysuru, India
- Department of Biochemistry, Faculty of Education & Science, Albaydha University, Al-Baydha, Yemen
| | - Salma Salah
- Faculty of Medicine and Health Sciences, Thamar University, Dhamar, Yemen
| | - Shaukath Ara Khanum
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysuru, India
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Li H, Li Q, Hao Z, Zhang L, Zheng X, Zhu L, Huo Y, Tian H, He L, Hao Z. A recombinant IL-1β vaccine attenuates bleomycin-induced pulmonary fibrosis in mice. Vaccine 2024; 42:3774-3788. [PMID: 38714443 DOI: 10.1016/j.vaccine.2024.04.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 02/04/2024] [Accepted: 04/29/2024] [Indexed: 05/09/2024]
Abstract
Interleukin-1β (IL-1β) contributes to interstitial lung disease (ILD) and pulmonary fibrosis (PF), thus representing a potential therapeutic target for PF. In this study, we first verified the increased expression of IL-1β in human fibrotic lung specimens and mouse lung tissues after intratracheal (i.t.) instillation of bleomycin (BLM), after which the pro-inflammatory and pro-fibrotic effects of recombinant IL-1β were tested in mice. The results above suggested that vaccination against IL-1β could be an effective strategy for managing PF. An anti-IL-1β vaccine (PfTrx-IL-1β) was designed by incorporating two IL-1β-derived polypeptides, which have been verified as the key domains that mediate the binding of IL-1β to its type I receptor, into Pyrococcus furiosus thioredoxin (PfTrx). The fusion protein PfTrx-IL-1β was prepared by using E. coli expression system. The vaccine was well tolerated; it induced robust and long-lasting antibody responses in mice and neutralized the biological activity of IL-1β, as shown in cellular assays. Pre-immunization with PfTrx-IL-1β effectively protected mice from BLM-induced lung injury, inflammation, and fibrosis. In vitro experiments further showed that anti-PfTrx-IL-1β antibodies counteracted the effects of IL-1β concerning pro-inflammatory and pro-fibrotic cytokine production by primary mouse lung fibroblast, macrophages (RAW264.7), and type II alveolar epithelial cell (A549), primary mouse lung fibroblast activation and epithelial-mesenchymal transition (EMT) of alveolar epithelial cells. In addition, the vaccination did not compromise the anti-infection immunity in mice, as validated by a sepsis model. Our preliminary study suggests that the anti-IL-1β vaccine we prepared has the potential to be developed as a therapeutic measure for PF. Further experiments are warranted to evaluate whether IL-1β vaccination has the capacity of inhibiting chronic progressive PF and reversing established PF.
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Affiliation(s)
- Hanchao Li
- Department of Rheumatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Qian Li
- Department of Rheumatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Zhaoyang Hao
- Shanxi Medical University, Taiyuan, Shanxi Province, People's Republic of China
| | - Lijuan Zhang
- Department of Nephrology, East District of the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Xiaoyan Zheng
- Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Li Zhu
- Department of Rheumatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Yongwei Huo
- Department of Anatomy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Hong Tian
- Department of Anatomy, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Lan He
- Department of Rheumatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China
| | - Zhiming Hao
- Department of Rheumatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, People's Republic of China.
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Liu L, Luo Y, Xu T, Tang Q, Yi J, Wang L, Luo S, Bi Z, Liu J, Lu J, Bi W, Peng C, Liu J. Perioperative complications of middle cerebral artery occlusion in rats alleviated by human umbilical cord mesenchymal stem cells. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03269-3. [PMID: 38980408 DOI: 10.1007/s00210-024-03269-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 06/30/2024] [Indexed: 07/10/2024]
Abstract
For acute ischemic stroke treatment, the limitations of treatment methods and the high incidence of perioperative complications seriously affect the survival rate and postoperative recovery of patients. Human umbilical cord mesenchymal stem cells (hucMSCs) have multi-directional differentiation potential and immune regulation function, which is a potential cell therapy. The present investigation involved developing a model of cerebral ischemia-reperfusion injury by thrombectomy after middle cerebral artery occlusion (MCAO) for 90 min in rats and utilizing comprehensive multi-system evaluation methods, including the detection of brain tissue ischemia, postoperative survival rate, neurological score, anesthesia recovery monitoring, pain evaluation, stress response, and postoperative pulmonary complications, to elucidate the curative effect of tail vein injection of hucMSCs on MCAO's perioperative complications. Based on our research, it has been determined that hucMSCs treatment can reduce the volume of brain tissue ischemia, promote the recovery of neurological function, and improve the postoperative survival rate of MCAO in rats. At the same time, hucMSCs treatment can prolong the time of anesthesia recovery, relieve the occurrence of delirium during anesthesia recovery, and also have a good control effect on postoperative weight loss, facial pain expression, and lung injury. It can also reduce postoperative stress response by regulating blood glucose and serum levels of stress-related proteins including TNF-α, IL-6, CRP, NE, cortisol, β-endorphin, and IL-10, and ultimately promote the recovery of MCAO's perioperative complications.
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Affiliation(s)
- Liang Liu
- Department of Anesthesia, Changde Hospital, Xiangya School of Medicine, Central South University, Changde, 415000, Hunan, China
| | - Yating Luo
- Guangdong Chanmeng Stem Cell Technologies Co., Ltd., Foshan, 528000, Guangdong, China
| | - Tao Xu
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Qisheng Tang
- Regenerative Medicine Research Center of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Xishan District, 157 Jinbi Road, Kunming, 650000, Yunnan, China
- Cell Therapy Engineering Research Center for Cardiovascular Diseases in Yunnan Province, Kunming, 650000, Yunnan, China
- Key Laboratory of Innovative Application for Traditional Chinese Medicine in Yunnan Province, Kunming, 650000, Yunnan, China
| | - Jialian Yi
- Regenerative Medicine Research Center of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Xishan District, 157 Jinbi Road, Kunming, 650000, Yunnan, China
- Cell Therapy Engineering Research Center for Cardiovascular Diseases in Yunnan Province, Kunming, 650000, Yunnan, China
- Key Laboratory of Innovative Application for Traditional Chinese Medicine in Yunnan Province, Kunming, 650000, Yunnan, China
| | - Linping Wang
- Regenerative Medicine Research Center of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Xishan District, 157 Jinbi Road, Kunming, 650000, Yunnan, China
- Cell Therapy Engineering Research Center for Cardiovascular Diseases in Yunnan Province, Kunming, 650000, Yunnan, China
- Key Laboratory of Innovative Application for Traditional Chinese Medicine in Yunnan Province, Kunming, 650000, Yunnan, China
| | - Shixiang Luo
- Obstetrical Department of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650000, Yunnan, China
| | - Zhaohong Bi
- Reproductive Medicine Department of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650000, Yunnan, China
| | - Jianlei Liu
- Cellular Immunity Laboratory of Foshan Fosun Chancheng Hospital, Foshan, 528031, Guangdong, China
| | - Jun Lu
- Cellular Immunity Laboratory of Foshan Fosun Chancheng Hospital, Foshan, 528031, Guangdong, China
| | - Weiwei Bi
- Cellular Immunity Laboratory of Foshan Fosun Chancheng Hospital, Foshan, 528031, Guangdong, China
| | - Changguo Peng
- Department of Anesthesia, Changde Hospital, Xiangya School of Medicine, Central South University, Changde, 415000, Hunan, China
| | - Jie Liu
- Regenerative Medicine Research Center of The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Xishan District, 157 Jinbi Road, Kunming, 650000, Yunnan, China.
- Cell Therapy Engineering Research Center for Cardiovascular Diseases in Yunnan Province, Kunming, 650000, Yunnan, China.
- Key Laboratory of Innovative Application for Traditional Chinese Medicine in Yunnan Province, Kunming, 650000, Yunnan, China.
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Odawara M, Nishi H, Nangaku M. A spotlight on using HIF-PH inhibitors in renal anemia. Expert Opin Pharmacother 2024; 25:1291-1299. [PMID: 38994698 DOI: 10.1080/14656566.2024.2378903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
INTRODUCTION Erythropoiesis-stimulating agents (ESAs) together with iron supplementation had been the standard treatment for anemia in chronic kidney disease (CKD) for the past decades. Recently, hypoxia-inducible factor-prolyl hydroxylase inhibitors (HIF-PHIs) have attracted attention as a novel treatment option. AREAS COVERED This review summarizes the effectiveness and the safety of HIF-PHIs based on previous clinical trials and discusses points to consider for their clinical use. EXPERT OPINION The results from clinical trials demonstrate that HIF-PHIs are non-inferior to ESAs in terms of the efficacy to maintain or improve blood hemoglobin levels. However, concerns about adverse events including cardiovascular outcomes, thrombotic events, and tumor progression have prevented HIF-PHIs from being widely approved for clinical use. Also, long-term safety has not been demonstrated yet. Practically, HIF-PHIs should be used with caution in patients with a history of thrombosis or active malignancy. Patients without them may be preferable for HIF-PHIs if those are bothered with regular injections of ESAs or are hyporesponsive to ESAs without obvious reasons, provided that the drugs were approved in the country. Even so, clinicians must take caution for signs of adverse events such as heart failure after prescribing the drugs.
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Affiliation(s)
- Motoki Odawara
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Hiroshi Nishi
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
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Wang J, Wu X, Fang J, Li Q. Intervention of exogenous VEGF protect brain microvascular endothelial cells from hypoxia-induced injury by regulating PLCγ/RAS/ERK and PI3K/AKT pathways. Exp Gerontol 2024; 192:112452. [PMID: 38718888 DOI: 10.1016/j.exger.2024.112452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/26/2024] [Accepted: 05/05/2024] [Indexed: 05/24/2024]
Abstract
Ischemic stroke rapidly increases the expression level of vascular endothelial growth factor (VEGF), which promotes neovascularization during hypoxia. However, the effect and mechanism of VEGF intervention on cerebrovascular formation remain unclear. Therefore, our research discussed the protective effect of exogenous VEGF on cells in hypoxia environment in cerebral microvascular endothelial cells, simulating ischemic stroke in hypoxic environment. Firstly, we detected the proliferation and apoptosis of cerebral microvascular endothelial cells under hypoxia environment, as well the expression levels of VEGF-E, vascular endothelial growth factor re-ceptor-2 (VEGFR-2), BCL2, PRKCE and PINK1. Moreover, immunofluorescence and western blotting were used to verify the regulation of exogenous VEGF-E on VEGFR-2 expression in hypoxic or normal oxygen environment. Lastly, we manipulated the concentration of VEGF-E in the culture medium to investigate its impact on phospholipase Cγ1 (PLCγ1)/extracellular signaling regulatory protein kinase (ERK) -1/2 and protein kinase B (AKT) pathways. Additionally, we employed a PLCγ1 inhibitor (U73122) to investigate its impact on proliferation and PLCγ1/ERK pathways. The results show that hypoxia inhibited the proliferation of cerebral microvascular endothelial cells, promoted cell apoptosis, significantly up-regulated the expression of VEGF-E, VEGFR-2, PRKCE and PINK1, but down-regulated the expression of BCL2. Interference from exogenous VEGF-E activated PLCγ1/ERK-1/2 and AKT pathways, promoting cell proliferation and inhibiting apoptosis of hypoxic brain microvascular endothelial cells. In summary, exogenous VEGF-E prevents hypoxia-induced damage to cerebral microvascular endothelial cells by activating the PLCγ1/ERK and AKT pathways. This action inhibits the apoptosis pathway in hypoxic cerebral microvascular endothelial cells, thereby safeguarding the blood-brain barrier and the nervous system.
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Affiliation(s)
- Jiani Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiang Wu
- Department of Neurology, Wushan County People's Hospital of Chongqing, Chongqing, China
| | - Jincai Fang
- Department of Neurosurgery, Second Affiliated Hospital of Jiaxing University, Jiaxing, China.
| | - Qian Li
- Chongqing Health Center for Women and Children, Chongqing, China; Women and Children's Hospital of Chongqing Medical University, Chongqing, China.
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Abstract
Pouchitis is an acute or chronic inflammatory disease of the ileal reservoir. It is common after restorative proctocolectomy with ileal pouch-anal anastomosis, and treatment of chronic antibiotic-refractory pouchitis has proven challenging. Most cases of acute pouchitis evolve into chronic pouchitis. The aetiology of acute pouchitis is likely to be partly related to the gut microbiota, whereas the pathophysiology of chronic pouchitis involves abnormal interactions between genetic disposition, faecal stasis, the gut microbiota, dysregulated host immunity, surgical techniques, ischaemia and mesentery-related factors. Pouchoscopy with biopsy is the most valuable modality for diagnosis, disease monitoring, assessment of treatment response, dysplasia surveillance and delivery of endoscopic therapy. Triggering or risk factors, such as Clostridioides difficile infection and use of non-steroidal anti-inflammatory drugs, should be modified or eradicated. In terms of treatment, acute pouchitis usually responds to oral antibiotics, whereas chronic antibiotic-refractory pouchitis often requires induction and maintenance therapy with integrin, interleukin or tumour necrosis factor inhibitors. Chronic pouchitis with ischaemic features, fistulae or abscesses can be treated with hyperbaric oxygen therapy.
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Affiliation(s)
- Bo Shen
- Center for Inflammatory Bowel Diseases and the Global Center for Integrated Colorectal Surgery and IBD Interventional Endoscopy, Columbia University Irving Medical Center/New York Presbyterian Hospital, New York, NY, USA.
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Bi R, Zhang D, Quan R, Lin X, Zhang W, Li C, Yuan M, Fang B, Wang D, Li Y. Edible bird's nest alleviates pneumonia caused by tobacco smoke inhalation through the TNFR1/NF-κB/NLRP3 pathway. Food Sci Nutr 2024; 12:4196-4210. [PMID: 38873472 PMCID: PMC11167147 DOI: 10.1002/fsn3.4080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/19/2024] [Accepted: 02/28/2024] [Indexed: 06/15/2024] Open
Abstract
Exposure to cigarette smoke directly damages the lungs and causes lung inflammation. The anti-inflammatory properties of edible bird's nest (EBN) have been reported. We aimed to determine the effect of EBN on pneumonia in a mouse model exposed to cigarette smoke. Fifty BALB/c mice were randomly divided into control, model, positive drug, low-dose EBN, and high-dose EBN groups (n = 10 each). Except for the control group, the mice in each group were exposed to four cigarettes once a day for 8 days. In addition, we validated the effects of EBN on A549 cells and investigated the mechanism by which EBN alleviates lung inflammation. Edible bird's nest (EBN) could alleviate the structural damage of lung tissue and the smoke-induced inflammatory response in mice. The best effect was observed at the high dose of EBN (0.019 g). The mice treated with EBN had a stronger ability than those in the model group to resist cigarette smoke stimulation, as indicated by a decrease in serum and lung inflammatory markers (interleukin 6 [IL-6], tumor necrosis factor-α [TNF-α], and interleukin 8 [IL-8]), an increase in serum interleukin 10 (IL-10) levels, and a decrease in the expression of inflammasome NOD-like receptor pyrin 3 (NLRP3). In addition, our cell experiments showed that EBN attenuated cigarette smoke-induced pulmonary inflammation mainly by inhibiting the tumor necrosis factor receptor 1 (TNFR1)/nuclear factor-kappa B (NF-κB)/NLRP3 pathway. These findings provide theoretical evidence for the positive nutritional qualities of EBN for the lung by demonstrating that it inhibits the TNFR1/NF-κB/NLRP3 signaling pathway, which prevents the development of cigarette smoke-induced pulmonary inflammation.
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Affiliation(s)
- Ran Bi
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
| | - Dan Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
| | - Rui Quan
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
| | - Xiaoxian Lin
- Hebei Edible Bird's Nest Fresh Stew Technology Innovation CenterLangfangChina
| | - Wen Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
| | - Chuangang Li
- Key Laboratory of Function Dairy, Co‐Constructed by Ministry of Education and Beijing Municipality, College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijingChina
| | - Man Yuan
- Hebei Edible Bird's Nest Fresh Stew Technology Innovation CenterLangfangChina
| | - Bing Fang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
| | - Dongliang Wang
- Hebei Edible Bird's Nest Fresh Stew Technology Innovation CenterLangfangChina
| | - Yixuan Li
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and HealthChina Agricultural UniversityBeijingChina
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Volkova YL, Jucht AE, Oechsler N, Krishnankutty R, von Kriegsheim A, Wenger RH, Scholz CC. Selective Hypoxia-Sensitive Oxomer Formation by FIH Prevents Binding of the NF-κB Inhibitor IκBβ to NF-κB Subunits. Mol Cell Biol 2024; 44:138-148. [PMID: 38644795 PMCID: PMC11110689 DOI: 10.1080/10985549.2024.2338727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 03/31/2024] [Indexed: 04/23/2024] Open
Abstract
Pharmacologic inhibitors of cellular hydroxylase oxygen sensors are protective in multiple preclinical in vivo models of inflammation. However, the molecular mechanisms underlying this regulation are only partly understood, preventing clinical translation. We previously proposed a new mechanism for cellular oxygen sensing: oxygen-dependent, (likely) covalent protein oligomer (oxomer) formation. Here, we report that the oxygen sensor factor inhibiting HIF (FIH) forms an oxomer with the NF-κB inhibitor β (IκBβ). The formation of this protein complex required FIH enzymatic activity and was prevented by pharmacologic inhibitors. Oxomer formation was highly hypoxia-sensitive and very stable. No other member of the IκB protein family formed an oxomer with FIH, demonstrating that FIH-IκBβ oxomer formation was highly selective. In contrast to the known FIH-dependent oxomer formation with the deubiquitinase OTUB1, FIH-IκBβ oxomer formation did not occur via an IκBβ asparagine residue, but depended on the amino acid sequence VAERR contained within a loop between IκBβ ankyrin repeat domains 2 and 3. Oxomer formation prevented IκBβ from binding to its primary interaction partners p65 and c-Rel, subunits of NF-κB, the master regulator of the cellular transcriptional response to pro-inflammatory stimuli. We therefore propose that FIH-mediated oxomer formation with IκBβ contributes to the hypoxia-dependent regulation of inflammation.
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Affiliation(s)
- Yulia L. Volkova
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | | | - Nina Oechsler
- Institute of Physiology, University Medicine Greifswald, Greifswald, Germany
| | | | | | - Roland H. Wenger
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Carsten C. Scholz
- Institute of Physiology, University of Zurich, Zurich, Switzerland
- Institute of Physiology, University Medicine Greifswald, Greifswald, Germany
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11
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Xu Q, Xiao Z, Yang Q, Yu T, Deng X, Chen N, Huang Y, Wang L, Guo J, Wang J. Hydrogel-based cardiac repair and regeneration function in the treatment of myocardial infarction. Mater Today Bio 2024; 25:100978. [PMID: 38434571 PMCID: PMC10907859 DOI: 10.1016/j.mtbio.2024.100978] [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: 07/24/2023] [Revised: 12/22/2023] [Accepted: 01/24/2024] [Indexed: 03/05/2024] Open
Abstract
A life-threatening illness that poses a serious threat to human health is myocardial infarction. It may result in a significant number of myocardial cells dying, dilated left ventricles, dysfunctional heart function, and ultimately cardiac failure. Based on the development of emerging biomaterials and the lack of clinical treatment methods and cardiac donors for myocardial infarction, hydrogels with good compatibility have been gradually applied to the treatment of myocardial infarction. Specifically, based on the three processes of pathophysiology of myocardial infarction, we summarized various types of hydrogels designed for myocardial tissue engineering in recent years, including natural hydrogels, intelligent hydrogels, growth factors, stem cells, and microRNA-loaded hydrogels. In addition, we also describe the heart patch and preparation techniques that promote the repair of MI heart function. Although most of these hydrogels are still in the preclinical research stage and lack of clinical trials, they have great potential for further application in the future. It is expected that this review will improve our knowledge of and offer fresh approaches to treating myocardial infarction.
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Affiliation(s)
- Qiaxin Xu
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
| | - Zeyu Xiao
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Molecular and Functional Imaging for Clinical Translation, Jinan University, Guangzhou, 510630, China
| | - Qianzhi Yang
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
| | - Tingting Yu
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
| | - Xiujiao Deng
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
| | - Nenghua Chen
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
| | - Yanyu Huang
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA, 95817, USA
| | - Lihong Wang
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
- Department of Endocrinology, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Jun Guo
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
- Department of Cardiology, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Jinghao Wang
- Department of Pharmacy, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- The Guangzhou Key Laboratory of Basic and Translational Research on Chronic Diseases, Jinan University, Guangzhou, 510630, China
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12
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Hausmann M, Seuwen K, de Vallière C, Busch M, Ruiz PA, Rogler G. Role of pH-sensing receptors in colitis. Pflugers Arch 2024; 476:611-622. [PMID: 38514581 PMCID: PMC11006753 DOI: 10.1007/s00424-024-02943-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 03/23/2024]
Abstract
Low pH in the gut is associated with severe inflammation, fibrosis, and colorectal cancer (CRC) and is a hallmark of active inflammatory bowel disease (IBD). Subsequently, pH-sensing mechanisms are of interest for the understanding of IBD pathophysiology. Tissue hypoxia and acidosis-two contributing factors to disease pathophysiology-are linked to IBD, and understanding their interplay is highly relevant for the development of new therapeutic options. One member of the proton-sensing G protein-coupled receptor (GPCR) family, GPR65 (T-cell death-associated gene 8, TDAG8), was identified as a susceptibility gene for IBD in a large genome-wide association study. In response to acidic extracellular pH, GPR65 induces an anti-inflammatory response, whereas the two other proton-sensing receptors, GPR4 and GPR68 (ovarian cancer G protein-coupled receptor 1, OGR1), mediate pro-inflammatory responses. Here, we review the current knowledge on the role of these proton-sensing receptors in IBD and IBD-associated fibrosis and cancer, as well as colitis-associated cancer (CAC). We also describe emerging small molecule modulators of these receptors as therapeutic opportunities for the treatment of IBD.
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Affiliation(s)
- Martin Hausmann
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland.
| | - Klaus Seuwen
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland
| | - Cheryl de Vallière
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland
| | - Moana Busch
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland
| | - Pedro A Ruiz
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland
| | - Gerhard Rogler
- Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, 8091, Zurich, CH, Switzerland
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13
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Yuan X, Ruan W, Bobrow B, Carmeliet P, Eltzschig HK. Targeting hypoxia-inducible factors: therapeutic opportunities and challenges. Nat Rev Drug Discov 2024; 23:175-200. [PMID: 38123660 DOI: 10.1038/s41573-023-00848-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2023] [Indexed: 12/23/2023]
Abstract
Hypoxia-inducible factors (HIFs) are highly conserved transcription factors that are crucial for adaptation of metazoans to limited oxygen availability. Recently, HIF activation and inhibition have emerged as therapeutic targets in various human diseases. Pharmacologically desirable effects of HIF activation include erythropoiesis stimulation, cellular metabolism optimization during hypoxia and adaptive responses during ischaemia and inflammation. By contrast, HIF inhibition has been explored as a therapy for various cancers, retinal neovascularization and pulmonary hypertension. This Review discusses the biochemical mechanisms that control HIF stabilization and the molecular strategies that can be exploited pharmacologically to activate or inhibit HIFs. In addition, we examine medical conditions that benefit from targeting HIFs, the potential side effects of HIF activation or inhibition and future challenges in this field.
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Affiliation(s)
- Xiaoyi Yuan
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Wei Ruan
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Department of Anaesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bentley Bobrow
- Department of Emergency Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Peter Carmeliet
- Laboratory of Angiogenesis & Vascular Metabolism, Center for Cancer Biology, VIB, Department of Oncology, KU Leuven, Leuven, Belgium
- Laboratory of Angiogenesis & Vascular Heterogeneity, Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Holger K Eltzschig
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
- Outcomes Research Consortium, Cleveland, OH, USA.
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14
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Beyersdorf F. Innovation and disruptive science determine the future of cardiothoracic surgery. Eur J Cardiothorac Surg 2024; 65:ezae022. [PMID: 38243711 DOI: 10.1093/ejcts/ezae022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/12/2024] [Indexed: 01/21/2024] Open
Abstract
One of the currently most asked questions in the field of medicine is how any specialty in the future will evolve to ensure better health for the patients by using current, unparalleled developments in all areas of science. This article will give an overview of new and evolving strategies for cardiothoracic (CT) surgery that are available today and will become available in the future in order to achieve this goal. In the founding era of CT surgery in the 1950s and 1960s, there was tremendous excitement about innovation and disruptive science, which eventually resulted in a completely new medical specialty, i.e. CT surgery. Entirely new treatment strategies were introduced for many cardiovascular diseases that had been considered incurable until then. As expected, alternative techniques have evolved in all fields of science during the last few decades, allowing great improvements in diagnostics and treatment in all medical specialties. The future of CT surgery will be determined by an unrestricted and unconditional investment in innovation, disruptive science and our own transformation using current achievements from many other fields. From the multitude of current and future possibilities, I will highlight 4 in this review: improvements in our current techniques, bringing CT surgery to low- and middle-income countries, revolutionizing the perioperative period and treating as yet untreatable diseases. These developments will allow us a continuation of the previously unheard-of treatment possibilities provided by ingenious innovations based on the fundamentals of CT surgery.
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Affiliation(s)
- Friedhelm Beyersdorf
- Department of Cardiovascular Surgery, University Hospital Freiburg, Freiburg, Germany
- Medical Faculty of the Albert-Ludwigs-University Freiburg, Germany
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15
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Poenariu IS, Boldeanu L, Ungureanu BS, Caragea DC, Cristea OM, Pădureanu V, Siloși I, Ungureanu AM, Statie RC, Ciobanu AE, Gheonea DI, Osiac E, Boldeanu MV. Interrelation of Hypoxia-Inducible Factor-1 Alpha (HIF-1 α) and the Ratio between the Mean Corpuscular Volume/Lymphocytes (MCVL) and the Cumulative Inflammatory Index (IIC) in Ulcerative Colitis. Biomedicines 2023; 11:3137. [PMID: 38137357 PMCID: PMC10741094 DOI: 10.3390/biomedicines11123137] [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: 09/11/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
We intended to investigate the presence and medical application of serum hypoxia-inducible factor-1 alpha (HIF-1α) along with the already known systemic inflammatory markers and the new one's inflammatory indices, the proportion of mean corpuscular volume and lymphocytes (MCVL) and the cumulative inflammatory index (IIC), for patients with ulcerative colitis (UC). We sought to establish correlations that may be present between the serum levels of HIF-1α and these inflammatory indices, as well as their relationship with disease activity and the extent of UC, which can provide us with a more precise understanding of the evolution, prognosis, and future well-being of patients. Serum samples were collected from 46 patients diagnosed with UC and 23 controls. For our assessment of the serum levels of HIF-1α, we used the Enzyme-Linked Immunosorbent Assay (ELISA) technique. Thus, for HIF-1α we detected significantly higher values in more severe and more extensive UC. When it came to MCVL and IIC, we observed statistically significant differences between the three groups being compared (Severe, Moderate, and Mild). Our study highlighted that HIF-1α correlated much better with a disease activity score, MCVL, and IIC. With MCVL and IIC, a strong and very strong correlation had formed between them and well-known inflammation indices. By examining the ROC curves of the analyzed parameters, we recognized that TWI (accuracy of 83.70%) provides the best discrimination of patients with early forms of UC, followed by HIF-1α (73.90% accuracy), MCVL (70.90% accuracy), and PLR (70.40%). In our study, we observed that HIF-1α, MCVL, and PLR had the same sensitivity (73.33%) but HIF-1α had a much better specificity (60.87% vs. 58.70%, and 54.35%). Also, in addition to the PLR, HIF-1α and MCVL can be used as independent predictor factors in the discrimination of patients with early forms of UC.
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Affiliation(s)
- Ioan Sabin Poenariu
- Doctoral School, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.P.); (R.-C.S.); (A.E.C.)
- Department of Immunology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.); (M.V.B.)
| | - Lidia Boldeanu
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (O.M.C.); (A.M.U.)
| | - Bogdan Silviu Ungureanu
- Department of Gastroenterology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (B.S.U.); (D.I.G.)
| | - Daniel Cosmin Caragea
- Department of Nephrology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Oana Mariana Cristea
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (O.M.C.); (A.M.U.)
| | - Vlad Pădureanu
- Department of Internal Medicine, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Isabela Siloși
- Department of Immunology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.); (M.V.B.)
| | - Anca Marinela Ungureanu
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (O.M.C.); (A.M.U.)
| | - Răzvan-Cristian Statie
- Doctoral School, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.P.); (R.-C.S.); (A.E.C.)
- Department of Gastroenterology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (B.S.U.); (D.I.G.)
| | - Alina Elena Ciobanu
- Doctoral School, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.P.); (R.-C.S.); (A.E.C.)
| | - Dan Ionuț Gheonea
- Department of Gastroenterology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (B.S.U.); (D.I.G.)
| | - Eugen Osiac
- Department of Biophysics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Mihail Virgil Boldeanu
- Department of Immunology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (I.S.); (M.V.B.)
- Medico Science SRL—Stem Cell Bank Unit, 200690 Craiova, Romania
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16
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Zhao Y, Xiong W, Li C, Zhao R, Lu H, Song S, Zhou Y, Hu Y, Shi B, Ge J. Hypoxia-induced signaling in the cardiovascular system: pathogenesis and therapeutic targets. Signal Transduct Target Ther 2023; 8:431. [PMID: 37981648 PMCID: PMC10658171 DOI: 10.1038/s41392-023-01652-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/10/2023] [Accepted: 09/13/2023] [Indexed: 11/21/2023] Open
Abstract
Hypoxia, characterized by reduced oxygen concentration, is a significant stressor that affects the survival of aerobic species and plays a prominent role in cardiovascular diseases. From the research history and milestone events related to hypoxia in cardiovascular development and diseases, The "hypoxia-inducible factors (HIFs) switch" can be observed from both temporal and spatial perspectives, encompassing the occurrence and progression of hypoxia (gradual decline in oxygen concentration), the acute and chronic manifestations of hypoxia, and the geographical characteristics of hypoxia (natural selection at high altitudes). Furthermore, hypoxia signaling pathways are associated with natural rhythms, such as diurnal and hibernation processes. In addition to innate factors and natural selection, it has been found that epigenetics, as a postnatal factor, profoundly influences the hypoxic response and progression within the cardiovascular system. Within this intricate process, interactions between different tissues and organs within the cardiovascular system and other systems in the context of hypoxia signaling pathways have been established. Thus, it is the time to summarize and to construct a multi-level regulatory framework of hypoxia signaling and mechanisms in cardiovascular diseases for developing more therapeutic targets and make reasonable advancements in clinical research, including FDA-approved drugs and ongoing clinical trials, to guide future clinical practice in the field of hypoxia signaling in cardiovascular diseases.
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Affiliation(s)
- Yongchao Zhao
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
| | - Weidong Xiong
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, 200032, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, 200032, China
| | - Chaofu Li
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
| | - Ranzun Zhao
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Hao Lu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - Shuai Song
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - You Zhou
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - Yiqing Hu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China.
| | - Bei Shi
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
| | - Junbo Ge
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China.
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, 200032, China.
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, 200032, China.
- National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China.
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, 200032, China.
- Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China.
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17
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Jia J, Yuan Y, He Y, Wasti B, Duan W, Chen Z, Li D, Sun W, Zeng Q, Ma L, Zhang X, Liu S, Zhang D, Liu L, Liu Q, Liang H, Wang G, Xiang X, Xiao B. Inhibition of METTL3 alleviated LPS-induced alveolar epithelial cell apoptosis and acute lung injury via restoring neprilysin expression. Life Sci 2023; 333:122148. [PMID: 37805166 DOI: 10.1016/j.lfs.2023.122148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/09/2023]
Abstract
AIMS To investigate the role and mechanisms of methyltransferase-like 3 (METTL3) in the pathogenesis of lipopolysaccharide (LPS)-induced acute lung injury (ALI). MAIN METHODS LPS intratracheally instillation was applied in alveolar epithelial cell METTL3 conditional knockout (METTL3-CKO) mice and their wild-type littermates. In addition, METTL3 inhibitor STM2457 was used. LPS treatment on mouse lung epithelial 12 (MLE-12) cell was applied to establish an in vitro model of LPS-induced ALI. H&E staining, lung wet-to-dry ratio, and total broncho-alveolar lavage fluid (BALF) concentrations were used to evaluate lung injury. Overall, the m6A level was determined with the m6A RNA Methylation Quantification Kit and dot blot assay. Expression of METTL3 and neprilysin were measured with immunohistochemistry, immunofluorescence, immunofluorescence-fluorescence in situ hybridization, and western blot. Apoptosis was detected with TUNEL, western blot, and flow cytometry. The interaction of METTL3 and neprilysin was determined with RIP-qPCR and MeRIP. KEY FINDINGS METTL3 expression and apoptosis were increased in alveolar epithelial cells of mice treated with LPS, and METTL3-CKO or METTL3 inhibitor STM2457 could alleviate apoptosis and LPS-induced ALI. In MLE-12 cells, LPS-Induced METTL3 expression and apoptosis. Knockdown of METTL3 alleviated, while overexpression of METTL3 exacerbated LPS-induced apoptosis. LPS treatment reduced neprilysin expression, the intervention of neprilysin expression negatively regulated apoptosis without affecting METTL3 expression, and mitigated the promoting effect of METTL3 on LPS-induced apoptosis. Additionally, METTL3 could bind to the mRNA of neprilysin, and reduce its expression. SIGNIFICANCE Our findings revealed that inhibition of METTL3 could exert anti-apoptosis and ALI-protective effects via restoring neprilysin expression.
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Affiliation(s)
- Jingsi Jia
- Department of Emergency Medicine, The Second Xiangya Hospital of Central South University, Emergency and Difficult Diseases Institute of Central South University, Changsha, Hunan, PR China
| | - Yu Yuan
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Yi He
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Binaya Wasti
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Wentao Duan
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Zhifeng Chen
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Danhong Li
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Wenjin Sun
- Department of General Medicine, West China Hospital, Sichuan University, Chengdu, PR China
| | | | - Libing Ma
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Guilin Medical University, Guangxi, PR China
| | - Xiufeng Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, PR China
| | - Shaokun Liu
- Department of Respiratory Medicine, Hunan Center for Evidence-Based Medicine, Research Unit of Respiratory Diseases, The Second Xiangya Hospital of Central South University, Changsha, PR China
| | - Dongshan Zhang
- Department of Emergency Medicine, The Second Xiangya Hospital of Central South University, Emergency and Difficult Diseases Institute of Central South University, Changsha, Hunan, PR China
| | - Linxia Liu
- Department of Respiratory and Critical Care Medicine, Guilin Hospital of the Second Xiangya Hospital of Central South University, Guilin, Guangxi, PR China
| | - Qimi Liu
- Department of Respiratory and Critical Care Medicine, Guilin Hospital of the Second Xiangya Hospital of Central South University, Guilin, Guangxi, PR China
| | - Hengxing Liang
- Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, PR China; Department of Thoracic Surgery, Guilin Hospital of the Second Xiangya Hospital of Central South University, Guilin, Guangxi, PR China
| | - Guyi Wang
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Xudong Xiang
- Department of Emergency Medicine, The Second Xiangya Hospital of Central South University, Emergency and Difficult Diseases Institute of Central South University, Changsha, Hunan, PR China; Department of Respiratory and Critical Care Medicine, Guilin Hospital of the Second Xiangya Hospital of Central South University, Guilin, Guangxi, PR China.
| | - Bing Xiao
- Department of Emergency Medicine, The Second Xiangya Hospital of Central South University, Emergency and Difficult Diseases Institute of Central South University, Changsha, Hunan, PR China; Department of Respiratory and Critical Care Medicine, Guilin Hospital of the Second Xiangya Hospital of Central South University, Guilin, Guangxi, PR China.
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18
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Liang Y, Ruan W, Jiang Y, Smalling R, Yuan X, Eltzschig HK. Interplay of hypoxia-inducible factors and oxygen therapy in cardiovascular medicine. Nat Rev Cardiol 2023; 20:723-737. [PMID: 37308571 PMCID: PMC11014460 DOI: 10.1038/s41569-023-00886-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/01/2023] [Indexed: 06/14/2023]
Abstract
Mammals have evolved to adapt to differences in oxygen availability. Although systemic oxygen homeostasis relies on respiratory and circulatory responses, cellular adaptation to hypoxia involves the transcription factor hypoxia-inducible factor (HIF). Given that many cardiovascular diseases involve some degree of systemic or local tissue hypoxia, oxygen therapy has been used liberally over many decades for the treatment of cardiovascular disorders. However, preclinical research has revealed the detrimental effects of excessive use of oxygen therapy, including the generation of toxic oxygen radicals or attenuation of endogenous protection by HIFs. In addition, investigators in clinical trials conducted in the past decade have questioned the excessive use of oxygen therapy and have identified specific cardiovascular diseases in which a more conservative approach to oxygen therapy could be beneficial compared with a more liberal approach. In this Review, we provide numerous perspectives on systemic and molecular oxygen homeostasis and the pathophysiological consequences of excessive oxygen use. In addition, we provide an overview of findings from clinical studies on oxygen therapy for myocardial ischaemia, cardiac arrest, heart failure and cardiac surgery. These clinical studies have prompted a shift from liberal oxygen supplementation to a more conservative and vigilant approach to oxygen therapy. Furthermore, we discuss the alternative therapeutic strategies that target oxygen-sensing pathways, including various preconditioning approaches and pharmacological HIF activators, that can be used regardless of the level of oxygen therapy that a patient is already receiving.
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Affiliation(s)
- Yafen Liang
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Wei Ruan
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yandong Jiang
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Richard Smalling
- Department of Cardiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Xiaoyi Yuan
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Holger K Eltzschig
- Department of Anaesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
- Outcomes Research Consortium, Cleveland, OH, USA
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19
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Vu LP, Diehl CJ, Casement R, Bond AG, Steinebach C, Strašek N, Bricelj A, Perdih A, Schnakenburg G, Sosič I, Ciulli A, Gütschow M. Expanding the Structural Diversity at the Phenylene Core of Ligands for the von Hippel-Lindau E3 Ubiquitin Ligase: Development of Highly Potent Hypoxia-Inducible Factor-1α Stabilizers. J Med Chem 2023; 66:12776-12811. [PMID: 37708384 PMCID: PMC10544018 DOI: 10.1021/acs.jmedchem.3c00434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Indexed: 09/16/2023]
Abstract
Hypoxia-inducible factor-1α (HIF-1α) constitutes the principal mediator of cellular adaptation to hypoxia in humans. The HIF-1α protein level and activity are tightly regulated by the ubiquitin E3 ligase von Hippel-Lindau (VHL). Here, we performed a structure-guided and bioactivity-driven design of new VHL inhibitors. Our iterative and combinatorial strategy focused on chemical variability at the phenylene unit and encompassed further points of diversity. The exploitation of tailored phenylene fragments and the stereoselective installation of the benzylic methyl group provided potent VHL ligands. Three high-resolution structures of VHL-ligand complexes were determined, and bioactive conformations of these ligands were explored. The most potent inhibitor (30) exhibited dissociation constants lower than 40 nM, independently determined by fluorescence polarization and surface plasmon resonance and an enhanced cellular potency, as evidenced by its superior ability to induce HIF-1α transcriptional activity. Our work is anticipated to inspire future efforts toward HIF-1α stabilizers and new ligands for proteolysis-targeting chimera (PROTAC) degraders.
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Affiliation(s)
- Lan Phuong Vu
- Pharmaceutical
Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
- Centre
for Targeted Protein Degradation, School of Life Sciences, University of Dundee, 1 James Lindsay Place, Dundee, Scotland DD1 5JJ, U.K.
| | - Claudia J. Diehl
- Centre
for Targeted Protein Degradation, School of Life Sciences, University of Dundee, 1 James Lindsay Place, Dundee, Scotland DD1 5JJ, U.K.
| | - Ryan Casement
- Centre
for Targeted Protein Degradation, School of Life Sciences, University of Dundee, 1 James Lindsay Place, Dundee, Scotland DD1 5JJ, U.K.
| | - Adam G. Bond
- Centre
for Targeted Protein Degradation, School of Life Sciences, University of Dundee, 1 James Lindsay Place, Dundee, Scotland DD1 5JJ, U.K.
| | - Christian Steinebach
- Pharmaceutical
Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
| | - Nika Strašek
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Aleša Bricelj
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Andrej Perdih
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
- National
Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Gregor Schnakenburg
- Institute
of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany
| | - Izidor Sosič
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Alessio Ciulli
- Centre
for Targeted Protein Degradation, School of Life Sciences, University of Dundee, 1 James Lindsay Place, Dundee, Scotland DD1 5JJ, U.K.
| | - Michael Gütschow
- Pharmaceutical
Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
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20
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Bhardwaj A, Antonelli M, Ueberheide B, Neel BG. Identification of a Novel Hypoxia-induced Inflammatory Cell Death Pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.05.552118. [PMID: 37808759 PMCID: PMC10557583 DOI: 10.1101/2023.08.05.552118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Hypoxic cancer cells resist many anti-neoplastic therapies and can seed recurrence. We found previously that PTP1B deficiency promotes HER2+ breast cancer cell death in hypoxia by activating RNF213, an ∼600kDa protein containing AAA-ATPase domains and two ubiquitin ligase domains (RING and RZ) that also is implicated in Moyamoya disease (MMD), lipotoxicity, and innate immunity. Here we report that PTP1B and ABL1/2 reciprocally control RNF213 phosphorylation on tyrosine-1275. This phosphorylation promotes RNF213 oligomerization and RZ domain activation. The RZ domain ubiquitylates CYLD/SPATA2, and together with the LUBAC complex, induces their degradation. Decreased CYLD/SPATA2 causes NF-κB activation, which together with hypoxia-induced ER-stress triggers GDSMD-dependent pyroptosis. Mutagenesis experiments show that the RING domain negatively regulates the RZ domain. CYLD -deleted HER2+ cell-derived xenografts phenocopy the effects of PTP1B deficiency, and reconstituting RNF213 knockout lines with RNF213 mutants shows that the RZ domain mediates PTP1B-dependent tumor cell death. Our results identify a novel, potentially targetable PTP1B/RNF213/CYCLD/SPATA pathway critical for controlling inflammatory cell death in hypoxic tumors that could be exploited to target hypoxic tumor cells, potentially turning "cold" tumors "hot". Our findings also reveal new insights into RNF213 regulation, and have potentially important implications for the pathogenesis of MMD, atherosclerosis, and inflammatory and auto-immune disorders.
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21
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An K, Deng X, Chi H, Zhang Y, Li Y, Cheng M, Ni Z, Yang Z, Wang C, Chen J, Bai J, Ran C, Wei Y, Li J, Zhang P, Xu F, Tan W. Stimuli-Responsive PROTACs for Controlled Protein Degradation. Angew Chem Int Ed Engl 2023; 62:e202306824. [PMID: 37470380 DOI: 10.1002/anie.202306824] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/21/2023]
Abstract
Proteolysis Targeting Chimeras (PROTACs) represent a promising therapeutic modality to address undruggable and resistant issues in drug discovery. However, potential on-target toxicity remains clinically challenging. We developed a generalized caging strategy to synthesize a series of stimuli-responsive PROTACs (sr-PROTACs) with diverse molecular blocks bearing robust and cleavable linkers, presenting "turn on" features in manipulating protein degradation. By leveraging pathological cues, such as elevated ROS, phosphatase, H2 S, or hypoxia, and external triggers, such as ultraviolet light, X-Ray, or bioorthogonal reagents, we achieved site-specific activation and traceless release of original PROTACs through de-caging and subsequent self-immolative cleavage, realizing selective uptake and controlled protein degradation in vitro. An in vivo study revealed that two sr-PROTACs with phosphate- and fluorine-containing cages exhibited high solubility and long plasma exposure, which were specifically activated by tumor overexpressing phosphatase or low dosage of X-Ray irradiation in situ, leading to efficient protein degradation and potent tumor remission. With more reactive biomarkers to be screened from clinical practice, our caging library could provide a general tool to design activatable PROTACs, prodrugs, antibody-drug conjugates, and smart biomaterials for personalized treatment, tissue engineering or regenerative medicine.
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Affiliation(s)
- Keli An
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xuqian Deng
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Hongli Chi
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Yuchao Zhang
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Yan Li
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Ming Cheng
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Zhigang Ni
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Zhi Yang
- Department of Gastrointestinal Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Chao Wang
- Department of Gastrointestinal Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Jinling Chen
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Jianbo Bai
- School of Aerospace Engineering, Tsinghua University, Beijing, 100084, China
| | - Chunyan Ran
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Yong Wei
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Juan Li
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Penghui Zhang
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, China
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, China
| | - Weihong Tan
- Zhejiang Cancer Hospital, The Key Laboratory of Zhejiang Province for Aptamers and Theranostics, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, China
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22
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Gao Y, Fang C, Wang J, Ye Y, Li Y, Xu Q, Kang X, Gu L. Neuroinflammatory Biomarkers in the Brain, Cerebrospinal Fluid, and Blood After Ischemic Stroke. Mol Neurobiol 2023; 60:5117-5136. [PMID: 37258724 DOI: 10.1007/s12035-023-03399-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
The most frequent type of stroke, known as ischemic stroke (IS), is a significant global public health issue. The pathological process of IS and post-IS episodes has not yet been fully explored, but neuroinflammation has been identified as one of the key processes. Biomarkers are objective indicators used to assess normal or pathological processes, evaluate responses to treatment, and predict outcomes, and some biomarkers can also be used as therapeutic targets. After IS, various molecules are produced by different cell types, such as microglia, astrocytes, infiltrating leukocytes, endothelial cells, and damaged neurons, that participate in the neuroinflammatory response within the ischemic brain region. These molecules may either promote or inhibit neuroinflammation and may be released into extracellular spaces, including cerebrospinal fluid (CSF) and blood, due to reasons such as BBB damage. These neuroinflammatory molecules should be valued as biomarkers to monitor whether their expression levels in the blood, CSF, and brain correlate with the diagnosis and prognosis of IS patients or whether they have potential as therapeutic targets. In addition, although some molecules do not directly participate in the process of neuroinflammation, they have been reported to have potential diagnostic or therapeutic value against post-IS neuroinflammation, and these molecules will also be listed. In this review, we summarize the neuroinflammatory biomarkers in the brain, CSF, and blood after an IS episode and the potential value of these biomarkers for the diagnosis, treatment, and prognosis of IS patients.
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Affiliation(s)
- Yikun Gao
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Congcong Fang
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jin Wang
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yingze Ye
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yina Li
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Qingxue Xu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xianhui Kang
- Department of Anesthesia, School of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, 310006, China.
| | - Lijuan Gu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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23
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Zheng ZX, Liu EY, Wu QY, Wu JH, Dong TTX, Tsim KWK. The flavonoids induce the transcription of mRNA encoding erythropoietin in cultured embryonic stem cells via the accumulation of hypoxia-inducible factor-1α. Chem Biol Interact 2023; 382:110609. [PMID: 37348668 DOI: 10.1016/j.cbi.2023.110609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/12/2023] [Accepted: 06/19/2023] [Indexed: 06/24/2023]
Abstract
Flavonoids are the most common phytochemicals in vegetables and herbal products. The beneficial functions of flavonoids in the brain and erythropoietic system have been proposed. Erythropoietin (EPO) is a potent protective agent in the brain; but which has difficulty to cross the blood brain barrier (BBB). Here, about 60 flavonoids were screened for their potential activation on the transcription of EPO mRNA in the neuronal embryonic stem cell lines, NT2/D1 and PC12. Amongst the screened flavonoids, formononetin, calycosin, ononin, chrysin, baicalein and apigenin showed robust up regulation of EPO production via enhancement of hypoxia response element (HRE) activity in cultured embryonic stem cells. In addition, the flavonoids showed activation of HRE activity by having increased accumulation of HIF-1α, but not on level of HIF-1β, in the cultures. The accumulation of HIF-1α was attributed to up regulation of HIF-1α mRNA and blockade of HIF-1α degradation upon treatment of the flavonoids. These results suggested a promising trend of developing commercial products of flavonoids as food supplements tailored for brain health.
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Affiliation(s)
- Zoey X Zheng
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Etta Y Liu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Q Y Wu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China
| | - J H Wu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Tina T X Dong
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China
| | - Karl W K Tsim
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China.
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24
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Rivera KR, Bliton RJ, Burclaff J, Czerwinski MJ, Liu J, Trueblood JM, Hinesley CM, Breau KA, Deal HE, Joshi S, Pozdin VA, Yao M, Ziegler AL, Blikslager AT, Daniele MA, Magness ST. Hypoxia Primes Human ISCs for Interleukin-Dependent Rescue of Stem Cell Activity. Cell Mol Gastroenterol Hepatol 2023; 16:823-846. [PMID: 37562653 PMCID: PMC10520368 DOI: 10.1016/j.jcmgh.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND AND AIMS Hypoxia in the intestinal epithelium can be caused by acute ischemic events or chronic inflammation in which immune cell infiltration produces inflammatory hypoxia starving the mucosa of oxygen. The epithelium has the capacity to regenerate after some ischemic and inflammatory conditions suggesting that intestinal stem cells (ISCs) are highly tolerant to acute and chronic hypoxia; however, the impact of hypoxia on human ISC (hISC) function has not been reported. Here we present a new microphysiological system (MPS) to investigate how hypoxia affects hISCs from healthy donors and test the hypothesis that prolonged hypoxia modulates how hISCs respond to inflammation-associated interleukins (ILs). METHODS hISCs were exposed to <1.0% oxygen in the MPS for 6, 24, 48, and 72 hours. Viability, hypoxia-inducible factor 1a (HIF1a) response, transcriptomics, cell cycle dynamics, and response to cytokines were evaluated in hISCs under hypoxia. HIF stabilizers and inhibitors were screened to evaluate HIF-dependent responses. RESULTS The MPS enables precise, real-time control and monitoring of oxygen levels at the cell surface. Under hypoxia, hISCs maintain viability until 72 hours and exhibit peak HIF1a at 24 hours. hISC activity was reduced at 24 hours but recovered at 48 hours. Hypoxia induced increases in the proportion of hISCs in G1 and expression changes in 16 IL receptors. Prolyl hydroxylase inhibition failed to reproduce hypoxia-dependent IL-receptor expression patterns. hISC activity increased when treated IL1β, IL2, IL4, IL6, IL10, IL13, and IL25 and rescued hISC activity caused by 24 hours of hypoxia. CONCLUSIONS Hypoxia pushes hISCs into a dormant but reversible proliferative state and primes hISCs to respond to a subset of ILs that preserves hISC activity. These findings have important implications for understanding intestinal epithelial regeneration mechanisms caused by inflammatory hypoxia.
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Affiliation(s)
- Kristina R Rivera
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina
| | - R Jarrett Bliton
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina
| | - Joseph Burclaff
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina
| | - Michael J Czerwinski
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jintong Liu
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jessica M Trueblood
- Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Caroline M Hinesley
- Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Keith A Breau
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Halston E Deal
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina
| | - Shlok Joshi
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Vladimir A Pozdin
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina
| | - Ming Yao
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina
| | - Amanda L Ziegler
- Comparative Medicine Institute, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Anthony T Blikslager
- Comparative Medicine Institute, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Michael A Daniele
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina; Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina
| | - Scott T Magness
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, North Carolina; Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
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25
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Ali F, Richardson RB. Electron, Photon, and Neutron Dose Conversion Coefficients of Lens and Non-Lens Tissues Using a Multi-Tissue Eye Model to Assess Risk of Cataracts and Retinitis. Radiat Res 2023; 200:162-175. [PMID: 37410087 DOI: 10.1667/rade-23-00023.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/02/2023] [Indexed: 07/07/2023]
Abstract
Previous publications describe the estimation of the dose from ionizing radiation to the whole lens or parts of it but have not considered other eye tissues that are implicated in cataract development; this is especially critical for low-dose, low-ionizing-density exposures. A recent review of the biological mechanisms of radiation-induced cataracts showed that lenticular oxidative stress can be increased by inflammation and vascular damage to non-lens tissues in the eye. Also, the radiation oxygen effect indicates different radiosensitivities for the vascular retina and the severely hypoxic lens. Therefore, this study uses the Monte Carlo N-Particle simulations to quantify dose conversion coefficients for several eye tissues for incident antero-posterior exposure to electrons, photons, and neutrons (and the tertiary electron component of neutron exposure). A stylized, multi-tissue eye model was developed by modifying a model by Behrens etal. (2009) to include the retina, uvea, sclera, and lens epithelial cell populations. Electron exposures were simulated as a single eye, whereas photon and neutron exposures were simulated employing two eyes embedded in the ADAM-EVA phantom. For electrons and photons, dose conversion coefficients are highest for either anterior tissues for low-energy incident particles or posterior tissues for high-energy incident particles. Neutron dose conversion coefficients generally increase with increasing incident energy for all tissues. The ratio of the absorbed dose delivered to each tissue to the absorbed dose delivered to the whole lens demonstrated the considerable deviation of non-lens tissue doses from lens doses, depending on particle type and its energy. These simulations demonstrate that there are large variations in the dose to various ocular tissues depending on the incident radiation dose coefficients; this large variation will potentially impact cataract development.
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Affiliation(s)
- Fawaz Ali
- Canadian Nuclear Laboratories, Chalk River, Canada
| | - Richard B Richardson
- Canadian Nuclear Laboratories, Chalk River, Canada
- McGill University, Montreal, Canada
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26
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Li H, Zhao S, Jiang M, Zhu T, Liu J, Feng G, Lu L, Dong J, Wu X, Chen X, Zhao Y, Fan S. Biomodified Extracellular Vesicles Remodel the Intestinal Microenvironment to Overcome Radiation Enteritis. ACS NANO 2023; 17:14079-14098. [PMID: 37399352 DOI: 10.1021/acsnano.3c04578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Ionizing radiation (IR) is associated with the occurrence of enteritis, and protecting the whole intestine from radiation-induced gut injury remains an unmet clinical need. Circulating extracellular vesicles (EVs) are proven to be vital factors in the establishment of tissue and cell microenvironments. In this study, we aimed to investigate a radioprotective strategy mediated by small EVs (exosomes) in the context of irradiation-induced intestinal injury. We found that exosomes derived from donor mice exposed to total body irradiation (TBI) could protect recipient mice against TBI-induced lethality and alleviate radiation-induced gastrointestinal (GI) tract toxicity. To enhance the protective effect of EVs, profilings of mouse and human exosomal microRNAs (miRNAs) were performed to identify the functional molecule in exosomes. We found that miRNA-142-5p was highly expressed in exosomes from both donor mice exposed to TBI and patients after radiotherapy (RT). Moreover, miR-142 protected intestinal epithelial cells from irradiation-induced apoptosis and death and mediated EV protection against radiation enteritis by ameliorating the intestinal microenvironment. Then, biomodification of EVs was accomplished via enhancing miR-142 expression and intestinal specificity of exosomes, and thus improved EV-mediated protection from radiation enteritis. Our findings provide an effective approach for protecting against GI syndrome in people exposed to irradiation.
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Affiliation(s)
- Hang Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Shuya Zhao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Mian Jiang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Tong Zhu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Jinjian Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Guoxing Feng
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Lu Lu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Jiali Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Xin Wu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Xin Chen
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province China
| | - Yu Zhao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P.R. China
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Huang Q, You M, Huang W, Chen J, Zeng Q, Jiang L, Du X, Liu X, Hong M, Wang J. Comparative effectiveness and acceptability of HIF prolyl-hydroxylase inhibitors versus for anemia patients with chronic kidney disease undergoing dialysis: a systematic review and network meta-analysis. Front Pharmacol 2023; 14:1050412. [PMID: 37521459 PMCID: PMC10374033 DOI: 10.3389/fphar.2023.1050412] [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: 09/21/2022] [Accepted: 06/19/2023] [Indexed: 08/01/2023] Open
Abstract
Background: The comparative benefits and acceptability of HIF-PHIs for treating anemia have not been well researched to date. We sought to compare the effectiveness of 6 HIF-PHIs and 3 ESAs for the treatment of renal anemia patients undergoing dialysis. Data sources: Cochrane Central Register of Controlled Trials, PubMed, Embase, Cochrane Library, MEDLINE, Web of Science, and clinicaltrials.gov databases. Results: Twenty-five RCTs (involving 17,204 participants) were included, all of which were designed to achieve target Hb levels by adjusting thee dose of HIF-PHIs. Regarding the efficacy in achieving target Hb levels, no significant differences were found between HIF-PHIs and ESAs in Hb response at the dose-adjusted designed RCTs selected for comparison. Intervention with roxadustat showed a significantly lower risk of RBC transfusion than rhEPO, with an OR and 95% CI of 0.76 (0.56-0.93). Roxadustat and vadadustat had higher risks of increasing the discontinuation rate than ESAs; the former had ORs and 95% CIs of 1.58 (95% CI: 1.21-2.06) for rhEPO, 1.66 (1.16-2.38) for DPO (darbepoetin alfa), and 1.76 (1.70-4.49) for MPG-EPO, and the latter had ORs and 95% CIs of 1.71 (1.09-2.67) for rhEPO, 1.79 (1.29-2.49) for DPO, and 2.97 (1.62-5.46) for MPG-EPO. No differences were observed in the AEs and SAEs among patients who received the studied drugs. Results of a meta-analysis of gastrointestinal disorders among AEs revealed that vadadustat was less effect on causing diarrea than DPO, with an OR of 0.97 (95% CI, 0.9-0.99). Included HIF-PHIs, were proven to be more effective than ESAs in reducing hepcidin levels and increasing TIBC and serum iron level with OR of -0.17 (95% CI, -0.21 to -0.12), OR of 0.79 (95% CI, 0.63-0.95), and OR of 0.39 (95% CI, 0.33-0.45), respectively. Conclusion: HIF-PHIs and ESAs have their characteristics and advantages in treating anemia undergoing dialysis. With the selected dose-adjusted mode, some HIF-PHIs appeared to be a potential treatment for DD-CKD patients when ompared with rhEPO, due to its effectiveness in decreasing the risk of RBC transfusion rate or regulating iron or lipid metabolism while achieving target Hb levels. Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=306511; Identifier: CRD42022306511.
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Affiliation(s)
- Qiong Huang
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
- Guangzhou University of Chinese Traditional Medicine, Guangzhou, China
| | - Minling You
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Weijuan Huang
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Jian Chen
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Qinming Zeng
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Longfeng Jiang
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Xiuben Du
- LuoHu Center for Chronic Disease Control, Shenzhen, China
| | - Xusheng Liu
- Guangzhou University of Chinese Traditional Medicine, Guangzhou, China
| | - Ming Hong
- Institute of Advanced Diagnostic and Clinical Medicine, Zhongshan City People’s Hospital, Affiliated Zhongshan Hospital of Sun Yat-sen University, Zhongshan, China
| | - Jing Wang
- Department of Nephropathy, Luohu District Traditional Chinese Medicine Hospital, Shenzhen, China
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28
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Zhang T, Xu D, Liu J, Wang M, Duan LJ, Liu M, Meng H, Zhuang Y, Wang H, Wang Y, Lv M, Zhang Z, Hu J, Shi L, Guo R, Xie X, Liu H, Erickson E, Wang Y, Yu W, Dang F, Guan D, Jiang C, Dai X, Inuzuka H, Yan P, Wang J, Babuta M, Lian G, Tu Z, Miao J, Szabo G, Fong GH, Karnoub AE, Lee YR, Pan L, Kaelin WG, Yuan J, Wei W. Prolonged hypoxia alleviates prolyl hydroxylation-mediated suppression of RIPK1 to promote necroptosis and inflammation. Nat Cell Biol 2023; 25:950-962. [PMID: 37400498 PMCID: PMC10617019 DOI: 10.1038/s41556-023-01170-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 05/21/2023] [Indexed: 07/05/2023]
Abstract
The prolyl hydroxylation of hypoxia-inducible factor 1α (HIF-1α) mediated by the EGLN-pVHL pathway represents a classic signalling mechanism that mediates cellular adaptation under hypoxia. Here we identify RIPK1, a known regulator of cell death mediated by tumour necrosis factor receptor 1 (TNFR1), as a target of EGLN1-pVHL. Prolyl hydroxylation of RIPK1 mediated by EGLN1 promotes the binding of RIPK1 with pVHL to suppress its activation under normoxic conditions. Prolonged hypoxia promotes the activation of RIPK1 kinase by modulating its proline hydroxylation, independent of the TNFα-TNFR1 pathway. As such, inhibiting proline hydroxylation of RIPK1 promotes RIPK1 activation to trigger cell death and inflammation. Hepatocyte-specific Vhl deficiency promoted RIPK1-dependent apoptosis to mediate liver pathology. Our findings illustrate a key role of the EGLN-pVHL pathway in suppressing RIPK1 activation under normoxic conditions to promote cell survival and a model by which hypoxia promotes RIPK1 activation through modulating its proline hydroxylation to mediate cell death and inflammation in human diseases, independent of TNFR1.
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Affiliation(s)
- Tao Zhang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Daichao Xu
- Interdisciplinary Center of Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
| | - Jianping Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Min Wang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li-Juan Duan
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Min Liu
- Transfusion Medicine, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Huyan Meng
- F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
| | - Yuan Zhuang
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Huibing Wang
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Yingnan Wang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mingming Lv
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai, China
| | - Zhengyi Zhang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jia Hu
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Linyu Shi
- Interdisciplinary Center of Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Rui Guo
- Interdisciplinary Center of Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Xingxing Xie
- Interdisciplinary Center of Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Hui Liu
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Emily Erickson
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Yaru Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wenyu Yu
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Fabin Dang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Dongxian Guan
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Cong Jiang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Xiaoming Dai
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hiroyuki Inuzuka
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Peiqiang Yan
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jingchao Wang
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mrigya Babuta
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gewei Lian
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Zhenbo Tu
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Ji Miao
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Gyongyi Szabo
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Guo-Hua Fong
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Antoine E Karnoub
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Yu-Ru Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Lifeng Pan
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - William G Kaelin
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Junying Yuan
- Interdisciplinary Center of Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
| | - Wenyi Wei
- Department of Pathology and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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Ruan W, Li J, Choi S, Ma X, Liang Y, Nair R, Yuan X, Mills TW, Eltzschig HK. Targeting myocardial equilibrative nucleoside transporter ENT1 provides cardioprotection by enhancing myeloid Adora2b signaling. JCI Insight 2023; 8:e166011. [PMID: 37288658 PMCID: PMC10393224 DOI: 10.1172/jci.insight.166011] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 04/28/2023] [Indexed: 06/09/2023] Open
Abstract
Previous studies implicate extracellular adenosine signaling in attenuating myocardial ischemia and reperfusion injury (IRI). This extracellular adenosine signaling is terminated by its uptake into cells by equilibrative nucleoside transporters (ENTs). Thus, we hypothesized that targeting ENTs would function to increase cardiac adenosine signaling and concomitant cardioprotection against IRI. Mice were exposed to myocardial ischemia and reperfusion injury. Myocardial injury was attenuated in mice treated with the nonspecific ENT inhibitor dipyridamole. A comparison of mice with global Ent1 or Ent2 deletion showed cardioprotection only in Ent1-/- mice. Moreover, studies with tissue-specific Ent deletion revealed that mice with myocyte-specific Ent1 deletion (Ent1loxP/loxP Myosin Cre+ mice) experienced smaller infarct sizes. Measurements of cardiac adenosine levels demonstrated that postischemic elevations of adenosine persisted during reperfusion after targeting ENTs. Finally, studies in mice with global or myeloid-specific deletion of the Adora2b adenosine receptor (Adora2bloxP/loxP LysM Cre+ mice) implied that Adora2b signaling on myeloid-inflammatory cells in cardioprotection provided by ENT inhibition. These studies reveal a previously unrecognized role for myocyte-specific ENT1 in cardioprotection by enhancing myeloid-dependent Adora2b signaling during reperfusion. Extension of these findings implicates adenosine transporter inhibitors in cardioprotection against ischemia and reperfusion injury.
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Affiliation(s)
- Wei Ruan
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
- Department of Anesthesiology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jiwen Li
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
- Department of Cardiac Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Seungwon Choi
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Xinxin Ma
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Yafen Liang
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Ragini Nair
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Xiaoyi Yuan
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Tingting W. Mills
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Holger K. Eltzschig
- Department of Anesthesiology, Critical Care and Pain Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
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30
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Strickland LN, Faraoni EY, Ruan W, Yuan X, Eltzschig HK, Bailey-Lundberg JM. The resurgence of the Adora2b receptor as an immunotherapeutic target in pancreatic cancer. Front Immunol 2023; 14:1163585. [PMID: 37187740 PMCID: PMC10175829 DOI: 10.3389/fimmu.2023.1163585] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 04/19/2023] [Indexed: 05/17/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterized by a dense desmoplastic stroma that impedes drug delivery, reduces parenchymal blood flow, and suppresses the anti-tumor immune response. The extracellular matrix and abundance of stromal cells result in severe hypoxia within the tumor microenvironment (TME), and emerging publications evaluating PDAC tumorigenesis have shown the adenosine signaling pathway promotes an immunosuppressive TME and contributes to the overall low survival rate. Hypoxia increases many elements of the adenosine signaling pathway, resulting in higher adenosine levels in the TME, further contributing to immune suppression. Extracellular adenosine signals through 4 adenosine receptors (Adora1, Adora2a, Adora2b, Adora3). Of the 4 receptors, Adora2b has the lowest affinity for adenosine and thus, has important consequences when stimulated by adenosine binding in the hypoxic TME. We and others have shown that Adora2b is present in normal pancreas tissue, and in injured or diseased pancreatic tissue, Adora2b levels are significantly elevated. The Adora2b receptor is present on many immune cells, including macrophages, dendritic cells, natural killer cells, natural killer T cells, γδ T cells, B cells, T cells, CD4+ T cells, and CD8+ T cells. In these immune cell types, adenosine signaling through Adora2b can reduce the adaptive anti-tumor response, augmenting immune suppression, or may contribute to transformation and changes in fibrosis, perineural invasion, or the vasculature by binding the Adora2b receptor on neoplastic epithelial cells, cancer-associated fibroblasts, blood vessels, lymphatic vessels, and nerves. In this review, we discuss the mechanistic consequences of Adora2b activation on cell types in the tumor microenvironment. As the cell-autonomous role of adenosine signaling through Adora2b has not been comprehensively studied in pancreatic cancer cells, we will also discuss published data from other malignancies to infer emerging therapeutic considerations for targeting the Adora2b adenosine receptor to reduce the proliferative, invasive, and metastatic potential of PDAC cells.
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Affiliation(s)
| | | | | | | | | | - Jennifer M. Bailey-Lundberg
- Department of Anesthesiology, Critical Care, and Pain Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
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Suresh MV, Balijepalli S, Solanki S, Aktay S, Choudhary K, Shah YM, Raghavendran K. Hypoxia-Inducible Factor 1α and Its Role in Lung Injury: Adaptive or Maladaptive. Inflammation 2023; 46:491-508. [PMID: 36596930 PMCID: PMC9811056 DOI: 10.1007/s10753-022-01769-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/24/2022] [Accepted: 11/18/2022] [Indexed: 01/05/2023]
Abstract
Hypoxia-inducible factors (HIFs) are transcription factors critical for the adaptive response to hypoxia. There is also an essential link between hypoxia and inflammation, and HIFs have been implicated in the dysregulated immune response to various insults. Despite the prevalence of hypoxia in tissue trauma, especially involving the lungs, there remains a dearth of studies investigating the role of HIFs in clinically relevant injury models. Here, we summarize the effects of HIF-1α on the vasculature, metabolism, inflammation, and apoptosis in the lungs and review the role of HIFs in direct lung injuries, including lung contusion, acid aspiration, pneumonia, and COVID-19. We present data that implicates HIF-1α in the context of arguments both in favor and against its role as adaptive or injurious in the propagation of the acute inflammatory response in lung injuries. Finally, we discuss the potential for pharmacological modulation of HIFs as a new class of therapeutics in the modern intensive care unit.
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Affiliation(s)
| | | | - Sumeet Solanki
- Molecular & Integrative Physiology, University of Michigan, Ann Arbor, USA
| | - Sinan Aktay
- Department of Surgery, University of Michigan, Ann Arbor, USA
| | | | - Yatrik M Shah
- Molecular & Integrative Physiology, University of Michigan, Ann Arbor, USA
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Zheng S, Zhang D, Duan B, Mo G, Li J, Huang H, Wang S, Ye Y, Huang Z, Huang P, Zhang F, Huang F, Han L. Metabolomics integrated network pharmacology reveals the mechanism of Ma-Mu-Ran Antidiarrheal Capsules on acute enteritis mice. Anal Biochem 2023; 668:115116. [PMID: 36925055 DOI: 10.1016/j.ab.2023.115116] [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: 02/06/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023]
Abstract
Acute enteritis (AE) is a type of digestive disease caused by biochemical factors that irritate the intestinal tract or pathogenic bacteria that infect it. In China, Ma-Mu-Ran Antidiarrheal Capsules (MMRAC) have been applied against diarrhea caused by AE and bacillary dysentery for many years, but the underlying mechanisms of their beneficial effects are not known. In the present study, network pharmacology and metabolomics were performed to clarify the active ingredients of MMRAC and explore the specific mechanism of MMRAC on AE mice. A total of 43 active components of MMRAC with 87 anti-AE target genes were identified, and these target genes were enriched in IL-17 and HIF-1 signaling pathways. Integration analysis revealed that purine metabolism was the critical metabolic pathway by which MMRAC exerted its therapeutic effect against AE. Specifically, MAPK14, MMP9, PTGS2, HIF1A, EGLN1, NOS2 were the pivotal targets of MMRAC for the treatment of AE, and Western blot analysis revealed MMRAC to decrease protein levels of these pro-inflammatory signaling molecules. According to molecular docking, these key targets have a strong affinity with the MMRAC compounds. Collectively, MMRAC relieved the colon inflammation of AE mice via regulating inflammatory signaling pathways to reduce hypoxia and improved energy metabolism.
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Affiliation(s)
- Sili Zheng
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Dongning Zhang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China; Xinjiang Uygur Pharmaceutical Co., LTD, Urumqi, Xinjiang, 830026, China
| | - Bailu Duan
- College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Guoyan Mo
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China; Key Laboratory of Traditional Chinese Medicine Resource and Prescription, Ministry of Education, Wuhan, Hubei, 430065, China
| | - Jingjing Li
- College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Hailing Huang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Shanshan Wang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Yan Ye
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Zhuang Huang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Ping Huang
- College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Fengyun Zhang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China
| | - Fang Huang
- College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China.
| | - Lintao Han
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, China; Key Laboratory of Traditional Chinese Medicine Resource and Prescription, Ministry of Education, Wuhan, Hubei, 430065, China.
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Varghese B, Jala A, Meka S, Adla D, Jangili S, Talukdar RK, Mutheneni SR, Borkar RM, Adela R. Integrated metabolomics and machine learning approach to predict hypertensive disorders of pregnancy. Am J Obstet Gynecol MFM 2023; 5:100829. [PMID: 36464239 DOI: 10.1016/j.ajogmf.2022.100829] [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: 11/11/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
BACKGROUND Hypertensive disorders of pregnancy account for 3% to 10% of maternal-fetal morbidity and mortality worldwide. This condition has been considered one of the leading causes of maternal deaths in developing countries, such as India. OBJECTIVE This study aimed to discover hypertensive disorders of pregnancy-specific candidate urine metabolites as markers for hypertensive disorders of pregnancy by applying integrated metabolomics and machine learning approaches. STUDY DESIGN The targeted urinary metabolomics study was conducted in 70 healthy pregnant controls and 133 pregnant patients having hypertension as cases. Hypertensive disorders of pregnancy-specific metabolites for disease prediction were further extracted using univariate and multivariate statistical analyses. For machine learning analysis, 80% of the data were used for training (79 for hypertensive disorders of pregnancy and 42 for healthy pregnancy) and validation (27 for hypertensive disorders of pregnancy and 14 for healthy pregnancy), and 20% of the data were used for test sets (27 for hypertensive disorders of pregnancy and 14 for healthy pregnancy). RESULTS The statistical analysis using an unpaired t test revealed 44 differential metabolites. Pathway analysis showed mainly that purine and thiamine metabolism were altered in the group with hypertensive disorders of pregnancy compared with the healthy pregnancy group. The area under the receiver operating characteristic curves of the 5 most predominant metabolites were 0.98 (adenosine), 0.92 (adenosine monophosphate), 0.89 (deoxyadenosine), 0.81 (thiamine), and 0.81 (thiamine monophosphate). The best prediction accuracies were obtained using 2 machine learning models (95% for the gradient boost model and 98% for the decision tree) among the 5 used models. The machine learning models showed higher predictive performance for 3 metabolites (ie, thiamine monophosphate, adenosine monophosphate, and thiamine) among 5 metabolites. The combined accuracies of adenosine from all models were 98.6 in the training set and 95.6 in the test set. Moreover, the predictive performance of adenosine was higher than other metabolites. The relative feature importance of adenosine was also observed in the decision tree and the gradient boost model. CONCLUSION Among other metabolites, adenosine and thiamine metabolites were found to differentiate participants with hypertensive disorders of pregnancy from participants with healthy pregnancies; hence, these metabolites can serve as a promising noninvasive marker for the detection of hypertensive disorders of pregnancy.
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Affiliation(s)
- Bincy Varghese
- Departments of Pharmacy Practice (Mses Varghese and Meka and Dr Adela) and Pharmaceutical Analysis (Ms Jala and Dr Borkar)
| | - Aishwarya Jala
- National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Soumya Meka
- Departments of Pharmacy Practice (Mses Varghese and Meka and Dr Adela) and Pharmaceutical Analysis (Ms Jala and Dr Borkar)
| | - Deepthi Adla
- Bioinformatics Group, Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India (Mses Adla and Jangili and Dr Mutheneni)
| | - Shraddha Jangili
- Bioinformatics Group, Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India (Mses Adla and Jangili and Dr Mutheneni)
| | - R K Talukdar
- Department of Obstetrics and Gynecology, Gauhati Medical College, Guwahati, India (Dr Talukdar)
| | - Srinivasa Rao Mutheneni
- Bioinformatics Group, Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India (Mses Adla and Jangili and Dr Mutheneni)
| | - Roshan M Borkar
- National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Ramu Adela
- Departments of Pharmacy Practice (Mses Varghese and Meka and Dr Adela) and Pharmaceutical Analysis (Ms Jala and Dr Borkar).
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Rivera KR, Bliton RJ, Burclaff J, Czerwinski MJ, Liu J, Trueblood JM, Hinesley CM, Breau KA, Joshi S, Pozdin VA, Yao M, Ziegler AL, Blikslager AT, Daniele MA, Magness ST. A new microphysiological system shows hypoxia primes human ISCs for interleukin-dependent rescue of stem cell activity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.31.524747. [PMID: 36778265 PMCID: PMC9915581 DOI: 10.1101/2023.01.31.524747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Background & Aims Hypoxia in the intestinal epithelium can be caused by acute ischemic events or conditions like Inflammatory Bowel Disease (IBD) where immune cell infiltration produces 'inflammatory hypoxia', a chronic condition that starves the mucosa of oxygen. Epithelial regeneration after ischemia and IBD suggests intestinal stem cells (ISCs) are highly tolerant to acute and chronic hypoxia; however, the impact of acute and chronic hypoxia on human ISC (hISC) properties have not been reported. Here we present a new microphysiological system (MPS) to investigate how hypoxia affects hISCs isolated from healthy human tissues. We then test the hypothesis that some inflammation-associated interleukins protect hISCs during prolonged hypoxia. Methods hISCs were exposed to <1.0% oxygen in the MPS for 6-, 24-, 48- & 72hrs. Viability, HIF1α response, transcriptomics, cell cycle dynamics, and hISC response to cytokines were evaluated. Results The novel MPS enables precise, real-time control and monitoring of oxygen levels at the cell surface. Under hypoxia, hISCs remain viable until 72hrs and exhibit peak HIF1α at 24hrs. hISCs lose stem cell activity at 24hrs that recovers at 48hrs of hypoxia. Hypoxia increases the proportion of hISCs in G1 and regulates hISC capacity to respond to multiple inflammatory signals. Hypoxia induces hISCs to upregulate many interleukin receptors and hISCs demonstrate hypoxia-dependent cell cycle regulation and increased organoid forming efficiency when treated with specific interleukins. Conclusions Hypoxia primes hISCs to respond differently to interleukins than hISCs in normoxia through a transcriptional response. hISCs slow cell cycle progression and increase hISC activity when treated with hypoxia and specific interleukins. These findings have important implications for epithelial regeneration in the gut during inflammatory events.
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Affiliation(s)
- Kristina R. Rivera
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill 911 Oval Dr., Raleigh, NC, 27695 (USA)
| | - R. Jarrett Bliton
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill 911 Oval Dr., Raleigh, NC, 27695 (USA)
| | - Joseph Burclaff
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill 911 Oval Dr., Raleigh, NC, 27695 (USA)
| | - Michael J. Czerwinski
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
| | - Jintong Liu
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
| | - Jessica M. Trueblood
- Center for Gastrointestinal Biology and Disease, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Caroline M. Hinesley
- Center for Gastrointestinal Biology and Disease, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Keith A Breau
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
| | - Shlok Joshi
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
| | - Vladimir A. Pozdin
- Department of Electrical & Computer Engineering, North Carolina State University, Raleigh, NC, 27695 (USA)
| | - Ming Yao
- Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC 27695 (USA)
| | - Amanda L. Ziegler
- Center for Gastrointestinal Biology and Disease, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Anthony T. Blikslager
- Center for Gastrointestinal Biology and Disease, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Michael A. Daniele
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill 911 Oval Dr., Raleigh, NC, 27695 (USA)
- Department of Electrical & Computer Engineering, North Carolina State University, Raleigh, NC, 27695 (USA)
| | - Scott T. Magness
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill 911 Oval Dr., Raleigh, NC, 27695 (USA)
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
- School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599 (USA)
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35
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Wen Y, Zhang S, Yuan W, Feng W, Li F. Afterglow/Fluorescence Dual-Emissive Ratiometric Oxygen Probe for Tumor Hypoxia Imaging. Anal Chem 2023; 95:2478-2486. [PMID: 36649320 DOI: 10.1021/acs.analchem.2c04764] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Hypoxia is a common feature of many diseases such as solid tumors. The measurement and imaging of oxygen (O2) are extremely important for disease diagnosis and therapy evaluation. In this work, the afterglow/fluorescence dual-emissive ratiometric O2 probe based on a photochemical reaction-based afterglow system is reported. The afterglow is highly sensitive to O2 because the O2 content is directly related to the 1O2 yield and eventually affects the afterglow intensity. The O2-insensitive fluorescence of an emitter can serve as an internal reference. As the O2 concentration changes from 0.08 to 18.5 mg L-1, the ratio value shows a remarkable 53-fold increase. Compared with the intensity of a single peak, the ratiometric signal can eliminate the interference of the probe concentration to achieve higher accuracy. This afterglow/fluorescence dual-emissive ratiometric O2 probe is successfully applied to hypoxia imaging in tumor-bearing mice, which may further promote the development of O2 sensing in the biomedical field.
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Affiliation(s)
- Yue Wen
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Yiwu Research Institute, Fudan University, Shanghai200433, P. R. China
| | - Sidi Zhang
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Yiwu Research Institute, Fudan University, Shanghai200433, P. R. China
| | - Wei Yuan
- Department of Chemistry & Institute of Optoelectronics, Fudan University, Shanghai200433, P. R. China
| | - Wei Feng
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Yiwu Research Institute, Fudan University, Shanghai200433, P. R. China
| | - Fuyou Li
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Yiwu Research Institute, Fudan University, Shanghai200433, P. R. China
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36
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Kim AH, Kolesnikova M, Ngo WK, Tsang SH. Effects of medications on hypoxia-inducible factor in the retina: A review. Clin Exp Ophthalmol 2023; 51:205-216. [PMID: 36594241 DOI: 10.1111/ceo.14161] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 01/04/2023]
Abstract
Hypoxia-inducible factor (HIF) plays a critical role in the mechanisms that allow cells to adapt to various oxygen levels in the environment. Specifically, HIF-1⍺ has shown to be widely involved in cellular repair, survival, and energy metabolism. HIF-1⍺ has also been found in increased levels in cancer cells, highlighting the importance of balance in the hypoxic response. Promoting HIF-1⍺ activity as a potential therapy for degenerative diseases and inhibiting HIF-1⍺ as a therapy for pathologies with overactive cell proliferation are actively being explored. Digoxin and metformin, HIF-1⍺ inhibitors, and deferoxamine and ⍺-ketoglutarate analogues, HIF-1⍺ activators, are being studied for application in age-related macular degeneration, diabetic retinopathy, and retinitis pigmentosa. However, these same medications have retinal toxicities that must be assessed before implementation of therapeutic care. Herein, we highlight the duality of therapeutic and toxic potential of HIF-1⍺ that must be carefully assessed prior to its clinical application in retinal disorders.
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Affiliation(s)
- Angela H Kim
- Jonas Children's Vision Care and Bernard & Shirlee Brown Glaucoma Laboratory, New York-Presbyterian Hospital, New York, New York, USA.,Edward S. Harkness Eye Institute, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, New York, USA.,SUNY Downstate Medical School, Brooklyn, New York, USA
| | - Masha Kolesnikova
- Jonas Children's Vision Care and Bernard & Shirlee Brown Glaucoma Laboratory, New York-Presbyterian Hospital, New York, New York, USA.,Edward S. Harkness Eye Institute, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, New York, USA.,SUNY Downstate Medical School, Brooklyn, New York, USA
| | - Wei Kiong Ngo
- Jonas Children's Vision Care and Bernard & Shirlee Brown Glaucoma Laboratory, New York-Presbyterian Hospital, New York, New York, USA.,Edward S. Harkness Eye Institute, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, New York, USA.,National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore
| | - Stephen H Tsang
- Jonas Children's Vision Care and Bernard & Shirlee Brown Glaucoma Laboratory, New York-Presbyterian Hospital, New York, New York, USA.,Edward S. Harkness Eye Institute, Columbia University Irving Medical Center/New York-Presbyterian Hospital, New York, New York, USA.,Departments of Pathology & Cell Biology, Columbia Stem Cell Initiative, New York, New York, USA.,Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, USA
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37
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Wang S, Zhang XF, Wang HS, Liu J, Shen SL, Cao XQ. A highly sensitive NIR fluorescence probe for hypoxia imaging in cells and ulcerative colitis. Talanta 2023; 252:123834. [DOI: 10.1016/j.talanta.2022.123834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/05/2022] [Accepted: 08/07/2022] [Indexed: 11/28/2022]
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38
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Han Y, Jia R, Zhang J, Zhu Q, Wang X, Ji Q, Zhang W. Hypoxia Attenuates Colonic Innate Immune Response and Inhibits TLR4/NF-κB Signaling Pathway in Lipopolysaccharide-Induced Colonic Epithelial Injury Mice. J Interferon Cytokine Res 2023; 43:43-52. [PMID: 36603105 DOI: 10.1089/jir.2022.0194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
High altitude hypoxia can lead to a spectrum of gastrointestinal problems. As the first line of host immune defense, innate immune response in the intestinal mucosa plays a pivotal role in maintaining intestinal homeostasis and protecting against intestinal injury at high altitude. This study aimed to investigate the effect of hypoxia on the colonic mucosal barrier and toll-like receptor 4 (TLR4)-mediated innate immune responses in the colon. The mice were exposed to a hypobaric chamber to simulate a 5,000 m plateau environment for 7 days, and the colonic mucosa changes were recorded. At the same time, the inflammation model was established by lipopolysaccharide (LPS) to explore the effects of hypoxia on the TLR4/nuclear factor kappa B (NF-κB) signaling pathway and its downstream inflammatory factors [tumor necrosis factor-α, interleukin (IL)-1β, IL-6, and interferon (IFN)-γ] in the colon. We found that hypoxic exposure caused weight loss and structural disturbance of the colonic mucosa in mice. Compared with the control group, the protein levels of TLR4 [fold change (FC) = 0.75 versus FC = 0.23], MyD88 (FC = 0.80 versus FC = 0.30), TIR-domain-containing adaptor protein inducing interferon-β (TRIF: FC = 0.89 versus FC = 0.38), and NF-κB p65 (FC = 0.75 versus FC = 0.24) in the colon of mice in the hypobaric hypoxia group were significantly decreased. LPS-induced upregulation of the TLR4/NF-κB signaling and its downstream inflammatory factors was inhibited by hypoxia. Specifically, compared with the LPS group, the protein levels of TLR4 (FC = 1.18, FC = 0.86), MyD88 (FC = 1.20, FC = 0.80), TRIF (FC = 1.20, FC = 0.86), and NF-κB p65 (FC = 1.29, FC = 0.62) and the mRNA levels of IL-1β (FC = 7.38, FC = 5.06), IL-6 (FC = 16.06, FC = 9.22), and IFN-γ (FC = 2.01, FC = 1.16) were reduced in the hypobaric hypoxia plus LPS group. Our findings imply that hypoxia could lead to marked damage of the colonic mucosa and a reduction of TLR4-mediated colonic innate immune responses, potentially reducing host defense responses to colonic pathogens.
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Affiliation(s)
- Ying Han
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Ruhan Jia
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Jingxuan Zhang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Qinfang Zhu
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Xiaozhou Wang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
| | - Qiaorong Ji
- Department of Pathophysiology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou, China
| | - Wei Zhang
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Qinghai University, Xining, China
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39
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Lun J, Zhang H, Guo J, Yu M, Fang J. Hypoxia inducible factor prolyl hydroxylases in inflammatory bowel disease. Front Pharmacol 2023; 14:1045997. [PMID: 37201028 PMCID: PMC10187758 DOI: 10.3389/fphar.2023.1045997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 04/18/2023] [Indexed: 05/20/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic disease that is characterized by intestinal inflammation. Epithelial damage and loss of intestinal barrier function are believed to be the hallmark pathologies of the disease. In IBD, the resident and infiltrating immune cells consume much oxygen, rendering the inflamed intestinal mucosa hypoxic. In hypoxia, the hypoxia-inducible factor (HIF) is induced to cope with the lack of oxygen and protect intestinal barrier. Protein stability of HIF is tightly controlled by prolyl hydroxylases (PHDs). Stabilization of HIF through inhibition of PHDs is appearing as a new strategy of IBD treatment. Studies have shown that PHD-targeting is beneficial to the treatment of IBD. In this Review, we summarize the current understanding of the role of HIF and PHDs in IBD and discuss the therapeutic potential of targeting PHD-HIF pathway for IBD treatment.
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Affiliation(s)
- Jie Lun
- Department of Oncology, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hongwei Zhang
- Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan, China
| | - Jing Guo
- Department of Oncology, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mengchao Yu
- Department of Gastroenterology, Qingdao Municipal Hospital, Qingdao, China
| | - Jing Fang
- Department of Oncology, Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China
- *Correspondence: Jing Fang,
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40
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Affiliation(s)
- Holger K Eltzschig
- From the Department of Anesthesiology, Critical Care and Pain Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston
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41
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McIlroy DR, Shotwell MS, Lopez MG, Vaughn MT, Olsen JS, Hennessy C, Wanderer JP, Semler MS, Rice TW, Kheterpal S, Billings FT. Oxygen administration during surgery and postoperative organ injury: observational cohort study. BMJ 2022; 379:e070941. [PMID: 36450405 PMCID: PMC9710248 DOI: 10.1136/bmj-2022-070941] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
OBJECTIVE To examine whether supraphysiological oxygen administration during surgery is associated with lower or higher postoperative kidney, heart, and lung injury. DESIGN Observational cohort study. SETTING 42 medical centers across the United States participating in the Multicenter Perioperative Outcomes Group data registry. PARTICIPANTS Adult patients undergoing surgical procedures ≥120 minutes' duration with general anesthesia and endotracheal intubation who were admitted to hospital after surgery between January 2016 and November 2018. INTERVENTION Supraphysiological oxygen administration, defined as the area under the curve of the fraction of inspired oxygen above air (21%) during minutes when the hemoglobin oxygen saturation was greater than 92%. MAIN OUTCOMES Primary endpoints were acute kidney injury defined using Kidney Disease Improving Global Outcomes criteria, myocardial injury defined as serum troponin >0.04 ng/mL within 72 hours of surgery, and lung injury defined using international classification of diseases hospital discharge diagnosis codes. RESULTS The cohort comprised 350 647 patients with median age 59 years (interquartile range 46-69 years), 180 546 women (51.5%), and median duration of surgery 205 minutes (interquartile range 158-279 minutes). Acute kidney injury was diagnosed in 19 207 of 297 554 patients (6.5%), myocardial injury in 8972 of 320 527 (2.8%), and lung injury in 13 789 of 312 161 (4.4%). The median fraction of inspired oxygen was 54.0% (interquartile range 47.5%-60.0%), and the area under the curve of supraphysiological inspired oxygen was 7951% min (5870-11 107% min), equivalent to an 80% fraction of inspired oxygen throughout a 135 minute procedure, for example. After accounting for baseline covariates and other potential confounding variables, increased oxygen exposure was associated with a higher risk of acute kidney injury, myocardial injury, and lung injury. Patients at the 75th centile for the area under the curve of the fraction of inspired oxygen had 26% greater odds of acute kidney injury (95% confidence interval 22% to 30%), 12% greater odds of myocardial injury (7% to 17%), and 14% greater odds of lung injury (12% to 16%) compared with patients at the 25th centile. Sensitivity analyses evaluating alternative definitions of the exposure, restricting the cohort, and conducting an instrumental variable analysis confirmed these observations. CONCLUSIONS Increased supraphysiological oxygen administration during surgery was associated with a higher incidence of kidney, myocardial, and lung injury. Residual confounding of these associations cannot be excluded. TRIAL REGISTRATION Open Science Framework osf.io/cfd2m.
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Affiliation(s)
- David R McIlroy
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Matthew S Shotwell
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Marcos G Lopez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Michelle T Vaughn
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
| | - Joanna S Olsen
- Department of Anesthesiology, Oregon Health and Science University, Portland, OR, USA
| | - Cassandra Hennessy
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jonathan P Wanderer
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Matthew S Semler
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Todd W Rice
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sachin Kheterpal
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
| | - Frederic T Billings
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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42
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Volkova YL, Pickel C, Jucht AE, Wenger RH, Scholz CC. The Asparagine Hydroxylase FIH: A Unique Oxygen Sensor. Antioxid Redox Signal 2022; 37:913-935. [PMID: 35166119 DOI: 10.1089/ars.2022.0003] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Significance: Limited oxygen availability (hypoxia) commonly occurs in a range of physiological and pathophysiological conditions, including embryonic development, physical exercise, inflammation, and ischemia. It is thus vital for cells and tissues to monitor their local oxygen availability to be able to adjust in case the oxygen supply is decreased. The cellular oxygen sensor factor inhibiting hypoxia-inducible factor (FIH) is the only known asparagine hydroxylase with hypoxia sensitivity. FIH uniquely combines oxygen and peroxide sensitivity, serving as an oxygen and oxidant sensor. Recent Advances: FIH was first discovered in the hypoxia-inducible factor (HIF) pathway as a modulator of HIF transactivation activity. Several other FIH substrates have now been identified outside the HIF pathway. Moreover, FIH enzymatic activity is highly promiscuous and not limited to asparagine hydroxylation. This includes the FIH-mediated catalysis of an oxygen-dependent stable (likely covalent) bond formation between FIH and selected substrate proteins (called oxomers [oxygen-dependent stable protein oligomers]). Critical Issues: The (patho-)physiological function of FIH is only beginning to be understood and appears to be complex. Selective pharmacologic inhibition of FIH over other oxygen sensors is possible, opening new avenues for therapeutic targeting of hypoxia-associated diseases, increasing the interest in its (patho-)physiological relevance. Future Directions: The contribution of FIH enzymatic activity to disease development and progression should be analyzed in more detail, including the assessment of underlying molecular mechanisms and relevant FIH substrate proteins. Also, the molecular mechanism(s) involved in the physiological functions of FIH remain(s) to be determined. Furthermore, the therapeutic potential of recently developed FIH-selective pharmacologic inhibitors will need detailed assessment. Antioxid. Redox Signal. 37, 913-935.
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Affiliation(s)
- Yulia L Volkova
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Christina Pickel
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | | | - Roland H Wenger
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Carsten C Scholz
- Institute of Physiology, University of Zurich, Zurich, Switzerland
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43
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Jackson EK, Kitsios GD, Lu MY, Schaefer CM, Kessinger CJ, McVerry BJ, Morris A, Macatangay BJC. Suppressed renoprotective purines in COVID-19 patients with acute kidney injury. Sci Rep 2022; 12:17353. [PMID: 36253495 PMCID: PMC9574168 DOI: 10.1038/s41598-022-22349-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 10/13/2022] [Indexed: 01/10/2023] Open
Abstract
Acute kidney injury (AKI) is common in patients hospitalized for COVID-19, complicating their clinical course and contributing to worse outcomes. Animal studies show that adenosine, inosine and guanosine protect the kidney against some types of AKI. However, until now there was no evidence in patients supporting the possibility that abnormally low kidney levels of adenosine, inosine and guanosine contribute to AKI. Here, we addressed the question as to whether these renoprotective purines are altered in the urine of COVID-19 patients with AKI. Purines were measured by employing ultra-high-performance liquid chromatography-tandem mass spectrometry with stable-isotope-labeled internal standards for each purine of interest. Compared with COVID-19 patients without AKI (n = 23), COVID-19 patients with AKI (n = 20) had significantly lower urine levels of adenosine (P < 0.0001), inosine (P = 0.0008), and guanosine (P = 0.0008) (medians reduced by 85%, 48% and 61%, respectively) and lower levels (P = 0.0003; median reduced by 67%) of the 2nd messenger for A2A and A2B adenosine receptors, i.e., 3',5'-cAMP. Moreover, in COVID-19 patients with AKI, urine levels of 8-aminoguanine (endogenous inhibitor of inosine and guanosine metabolism) were nearly abolished (P < 0.0001). In contrast, the "upstream" precursors of renoprotective purines, namely 5'-AMP and 5'-GMP, were not significantly altered in COVID-19 patients with AKI, suggesting defective conversion of these precursors by CD73 (converts 5'-AMP to adenosine and 5'-GMP to guanosine). These findings imply that an imbalance in renoprotective purines may contribute to AKI in COVID-19 patients and that pharmacotherapy targeted to restore levels of renoprotective purines may attenuate the risk of AKI in susceptible patients with COVID-19.
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Affiliation(s)
- Edwin K Jackson
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, 100 Technology Drive, Room 514, Pittsburgh, PA, 15219, USA.
| | - Georgios D Kitsios
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Michael Y Lu
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Caitlin M Schaefer
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Cathy J Kessinger
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Bryan J McVerry
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alison Morris
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Bernard J C Macatangay
- Department of Medicine, Division of Infectious Disease, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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44
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Zhuang J, Zhang X, Liu Q, Zhu M, Huang X. Targeted delivery of nanomedicines for promoting vascular regeneration in ischemic diseases. Am J Cancer Res 2022; 12:6223-6241. [PMID: 36168632 PMCID: PMC9475455 DOI: 10.7150/thno.73421] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 08/15/2022] [Indexed: 11/24/2022] Open
Abstract
Ischemic diseases, the leading cause of disability and death, are caused by the restriction or blockage of blood flow in specific tissues, including ischemic cardiac, ischemic cerebrovascular and ischemic peripheral vascular diseases. The regeneration of functional vasculature network in ischemic tissues is essential for treatment of ischemic diseases. Direct delivery of pro-angiogenesis factors, such as VEGF, has demonstrated the effectiveness in ischemic disease therapy but suffering from several obstacles, such as low delivery efficacy in disease sites and uncontrolled modulation. In this review, we summarize the molecular mechanisms of inducing vascular regeneration, providing the guidance for designing the desired nanomedicines. We also introduce the delivery of various nanomedicines to ischemic tissues by passive or active targeting manner. To achieve the efficient delivery of nanomedicines in various ischemic diseases, we highlight targeted delivery of nanomedicines and controllable modulation of disease microenvironment using nanomedicines.
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Affiliation(s)
- Jie Zhuang
- School of Medicine, Nankai University, Tianjin 300071, China.,Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China.,Joint Laboratory of Nanozymes, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xiangyun Zhang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China.,Joint Laboratory of Nanozymes, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Qiqi Liu
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China.,Joint Laboratory of Nanozymes, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Mingsheng Zhu
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China.,Joint Laboratory of Nanozymes, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xinglu Huang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China.,Joint Laboratory of Nanozymes, College of Life Sciences, Nankai University, Tianjin 300071, China
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45
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Heck-Swain KL, Li J, Ruan W, Yuan X, Wang Y, Koeppen M, Eltzschig HK. Myeloid hypoxia-inducible factor HIF1A provides cardio-protection during ischemia and reperfusion via induction of netrin-1. Front Cardiovasc Med 2022; 9:970415. [PMID: 36247475 PMCID: PMC9554136 DOI: 10.3389/fcvm.2022.970415] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/22/2022] [Indexed: 12/03/2022] Open
Abstract
The transcription factor hypoxia-inducible factor HIF1A induces cardioprotection from ischemia and reperfusion injury. Here, we investigate tissue-specific pathways that are critical for HIF1A-elicited tissue protection. Initial studies showed that mice with induced global Hif1a deletion (Hif1aloxP/loxP UbiquitinCre+) have exaggerated myocardial injury during in situ ischemia and reperfusion. Surprisingly, this phenotype was mirrored only in mice with myeloid-specific Hif1a deletion (Hif1a loxP/loxP LysM Cre+). In contrast, mice with myocardial specific (Hif1aloxP/loxP Myosin Cre+), or vascular Hif1a deletion (Hif1aloxP/loxP VEcadherin Cre+) experienced similar levels of injury as controls. Subsequent studies using adoptive transfer of Hif1a-deficient polymorphonuclear neutrophils (PMNs) prior to myocardial injury demonstrated increased reperfusion injury. On the contrary, the adoptive transfer of PMNs treated ex vivo with the hypoxia inducible factor (HIF) stabilizer dimethyloxalylglycine (DMOG) was associated with attenuated myocardial injury. Furthermore, DMOG-mediated cardioprotection was abolished in Hif1aloxP/loxP LysM Cre+ mice, but not in Hif2aloxP/loxP LysM Cre+ mice. Finally, studies of PMN-dependent HIF1A target genes implicated the neuronal guidance molecule netrin-1 in mediating the cardioprotective effects of myeloid HIF1A. Taken together, the present studies identified a functional role for myeloid-expressed HIF1A in providing cardioprotection during ischemia and reperfusion injury, which is mediated, at least in part, by the induction of the netrin-1 neuronal guidance molecule in neutrophils.
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Affiliation(s)
- Ka Lin Heck-Swain
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Jiwen Li
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Cardiac Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Wei Ruan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Anesthesiology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Yanyu Wang
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Michael Koeppen
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Holger K. Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
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46
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Fets L, Bevan N, Nunes PM, Campos S, Dos Santos MS, Sherriff E, MacRae JI, House D, Anastasiou D. MOG analogues to explore the MCT2 pharmacophore, α-ketoglutarate biology and cellular effects of N-oxalylglycine. Commun Biol 2022; 5:877. [PMID: 36028752 PMCID: PMC9418262 DOI: 10.1038/s42003-022-03805-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 08/05/2022] [Indexed: 11/09/2022] Open
Abstract
α-ketoglutarate (αKG) is a central metabolic node with a broad influence on cellular physiology. The αKG analogue N-oxalylglycine (NOG) and its membrane-permeable pro-drug derivative dimethyl-oxalylglycine (DMOG) have been extensively used as tools to study prolyl hydroxylases (PHDs) and other αKG-dependent processes. In cell culture media, DMOG is rapidly converted to MOG, which enters cells through monocarboxylate transporter MCT2, leading to intracellular NOG concentrations that are sufficiently high to inhibit glutaminolysis enzymes and cause cytotoxicity. Therefore, the degree of (D)MOG instability together with MCT2 expression levels determine the intracellular targets NOG engages with and, ultimately, its effects on cell viability. Here we designed and characterised a series of MOG analogues with the aims of improving compound stability and exploring the functional requirements for interaction with MCT2, a relatively understudied member of the SLC16 family. We report MOG analogues that maintain ability to enter cells via MCT2, and identify compounds that do not inhibit glutaminolysis or cause cytotoxicity but can still inhibit PHDs. We use these analogues to show that, under our experimental conditions, glutaminolysis-induced activation of mTORC1 can be uncoupled from PHD activity. Therefore, these new compounds can help deconvolute cellular effects that result from the polypharmacological action of NOG.
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Affiliation(s)
- Louise Fets
- Cancer Metabolism Laboratory, The Francis Crick Institute, London, UK
- Drug Transport and Tumour Metabolism Lab, MRC London Institute of Medical Sciences, London, UK
| | - Natalie Bevan
- Cancer Metabolism Laboratory, The Francis Crick Institute, London, UK
| | - Patrícia M Nunes
- Cancer Metabolism Laboratory, The Francis Crick Institute, London, UK
| | | | | | | | - James I MacRae
- Metabolomics Science Technology Platform, The Francis Crick Institute, London, UK
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47
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Ruan W, Ma X, Bang IH, Liang Y, Muehlschlegel JD, Tsai KL, Mills TW, Yuan X, Eltzschig HK. The Hypoxia-Adenosine Link during Myocardial Ischemia-Reperfusion Injury. Biomedicines 2022; 10:1939. [PMID: 36009485 PMCID: PMC9405579 DOI: 10.3390/biomedicines10081939] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
Despite increasing availability and more successful interventional approaches to restore coronary reperfusion, myocardial ischemia-reperfusion injury is a substantial cause of morbidity and mortality worldwide. During myocardial ischemia, the myocardium becomes profoundly hypoxic, thus causing stabilization of hypoxia-inducible transcription factors (HIF). Stabilization of HIF leads to a transcriptional program that promotes adaptation to hypoxia and cellular survival. Transcriptional consequences of HIF stabilization include increases in extracellular production and signaling effects of adenosine. Extracellular adenosine functions as a signaling molecule via the activation of adenosine receptors. Several studies implicated adenosine signaling in cardioprotection, particularly through the activation of the Adora2a and Adora2b receptors. Adenosine receptor activation can lead to metabolic adaptation to enhance ischemia tolerance or dampen myocardial reperfusion injury via signaling events on immune cells. Many studies highlight that clinical strategies to target the hypoxia-adenosine link could be considered for clinical trials. This could be achieved by using pharmacologic HIF activators or by directly enhancing extracellular adenosine production or signaling as a therapy for patients with acute myocardial infarction, or undergoing cardiac surgery.
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Affiliation(s)
- Wei Ruan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- Department of Anesthesiology, Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Xinxin Ma
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - In Hyuk Bang
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Yafen Liang
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Jochen Daniel Muehlschlegel
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Kuang-Lei Tsai
- Department of Biochemistry and Molecular Biology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Tingting W. Mills
- Department of Biochemistry and Molecular Biology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Holger K. Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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48
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Yuan X, Mills T, Doursout MF, Evans SE, Vidal Melo MF, Eltzschig HK. Alternative adenosine Receptor activation: The netrin-Adora2b link. Front Pharmacol 2022; 13:944994. [PMID: 35910389 PMCID: PMC9334855 DOI: 10.3389/fphar.2022.944994] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/28/2022] [Indexed: 11/25/2022] Open
Abstract
During hypoxia or inflammation, extracellular adenosine levels are elevated. Studies using pharmacologic approaches or genetic animal models pertinent to extracellular adenosine signaling implicate this pathway in attenuating hypoxia-associated inflammation. There are four distinct adenosine receptors. Of these, it is not surprising that the Adora2b adenosine receptor functions as an endogenous feedback loop to control hypoxia-associated inflammation. First, Adora2b activation requires higher adenosine concentrations compared to other adenosine receptors, similar to those achieved during hypoxic inflammation. Second, Adora2b is transcriptionally induced during hypoxia or inflammation by hypoxia-inducible transcription factor HIF1A. Studies seeking an alternative adenosine receptor activation mechanism have linked netrin-1 with Adora2b. Netrin-1 was originally discovered as a neuronal guidance molecule but also functions as an immune-modulatory signaling molecule. Similar to Adora2b, netrin-1 is induced by HIF1A, and has been shown to enhance Adora2b signaling. Studies of acute respiratory distress syndrome (ARDS), intestinal inflammation, myocardial or hepatic ischemia and reperfusion implicate the netrin-Adora2b link in tissue protection. In this review, we will discuss the potential molecular linkage between netrin-1 and Adora2b, and explore studies demonstrating interactions between netrin-1 and Adora2b in attenuating tissue inflammation.
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Affiliation(s)
- Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Tingting Mills
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Marie-Francoise Doursout
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Scott E. Evans
- Department of Pulmonology, MD Anderson Cancer Center, Houston, TX, United States
| | | | - Holger K. Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
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49
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Zhou W, Yu T, Hua Y, Hou Y, Ding Y, Nie H. Effects of Hypoxia on Respiratory Diseases: Perspective View of Epithelial Ion Transport. Am J Physiol Lung Cell Mol Physiol 2022; 323:L240-L250. [PMID: 35819839 DOI: 10.1152/ajplung.00065.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The balance of gas exchange and lung ventilation is essential for the maintenance of body homeostasis. There are many ion channels and transporters in respiratory epithelial cells, including epithelial sodium channel, Na,K-ATPase, cystic fibrosis transmembrane conductance regulator, and some transporters. These ion channels/transporters maintain the capacity of liquid layer on the surface of respiratory epithelial cells, and provide an immune barrier for the respiratory system to clear off foreign pathogens. However, in some harmful external environment and/or pathological conditions, the respiratory epithelium is prone to hypoxia, which would destroy the ion transport function of the epithelium and unbalance the homeostasis of internal environment, triggering a series of pathological reactions. Many respiratory diseases associated with hypoxia manifest an increased expression of hypoxia-inducible factor-1, which mediates the integrity of the epithelial barrier and affects epithelial ion transport function. It is important to study the relationship between hypoxia and ion transport function, whereas the mechanism of hypoxia-induced ion transport dysfunction in respiratory diseases is not clear. This review focuses on the relationship of hypoxia and respiratory diseases, as well as dysfunction of ion transport and tight junctions in respiratory epithelial cells under hypoxia.
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Affiliation(s)
- Wei Zhou
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Tong Yu
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yu Hua
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yapeng Hou
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yan Ding
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Hongguang Nie
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
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50
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Clayton DB, Tong CMC, Li B, Taylor AS, De S, Mason MD, Dudley AG, Davidoff O, Kobayashi H, Haase VH. Inhibition of hypoxia-inducible factor-prolyl hydroxylation protects from cyclophosphamide-induced bladder injury and urinary dysfunction. Am J Physiol Renal Physiol 2022; 323:F81-F91. [PMID: 35499237 PMCID: PMC9236868 DOI: 10.1152/ajprenal.00344.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 04/25/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022] Open
Abstract
Disruption of the blood-urine barrier can result in acute or chronic inflammatory bladder injury. Activation of the oxygen-regulated hypoxia-inducible factor (HIF) pathway has been shown to protect mucosal membranes by increasing the expression of cytoprotective genes and by suppressing inflammation. The activity of HIF is controlled by prolyl hydroxylase domain (PHD) dioxygenases, which have been exploited as therapeutic targets for the treatment of anemia of chronic kidney disease. Here, we established a mouse model of acute cyclophosphamide (CYP)-induced blood-urine barrier disruption associated with inflammation and severe urinary dysfunction to investigate the HIF-PHD axis in inflammatory bladder injury. We found that systemic administration of dimethyloxalylglycine or molidustat, two small-molecule inhibitors of HIF-prolyl hydroxylases, profoundly mitigated CYP-induced bladder injury and inflammation as assessed by morphological analysis of transmural edema and urothelial integrity and by measuring tissue cytokine expression. Void spot analysis to examine bladder function quantitatively demonstrated that HIF-prolyl hydroxylase inhibitor administration normalized micturition patterns and protected against CYP-induced alteration of urinary frequency and micturition patterns. Our study highlights the therapeutic potential of HIF-activating small-molecule compounds for the prevention or therapy of bladder injury and urinary dysfunction due to blood-urine barrier disruption.NEW & NOTEWORTHY Disruption of the blood-urine barrier can result in acute or chronic inflammatory bladder injury. Here, we demonstrate that pharmacological inhibition of hypoxia-inducible factor (HIF)-prolyl hydroxylation prevented bladder injury and protected from urinary dysfunction in a mouse model of cyclophosphamide-induced disruption of the blood-urine barrier. Our study highlights a potential role for HIF-activating small-molecule compounds in the prevention or therapy of bladder injury and urinary dysfunction and provides a rationale for future clinical studies.
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Affiliation(s)
- Douglass B Clayton
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Ching Man Carmen Tong
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Belinda Li
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Abby S Taylor
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Shuvro De
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Matthew D Mason
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anne G Dudley
- Division of Pediatric Urology, Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Olena Davidoff
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Medical and Research Services, Department of Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Hanako Kobayashi
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Medical and Research Services, Department of Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Volker H Haase
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Medical and Research Services, Department of Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville, Tennessee
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee
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