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Yang G, Li M, Zhang Y, Li X, Xin T, Hao J. Mechanisms of Rehmannioside A Against Systemic Lupus Erythematosus Based on Network Pharmacology, Molecular Docking and Molecular Dynamics Simulation. Cell Biochem Biophys 2024:10.1007/s12013-024-01435-1. [PMID: 39033091 DOI: 10.1007/s12013-024-01435-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2024] [Indexed: 07/23/2024]
Abstract
The effect of rehmannioside A (ReA) on systemic lupus erythematosus (SLE) is not clear and needs further study. In this study, SLE-related targets were obtained from the DisGeNet and GeneCards databases, while ReA-related targets were obtained from the SwissTarget and SuperPred databases. A protein-protein interaction network of intersected targets was constructed using the STRING platform. After selecting the intersected targets, GO and KEGG enrichment analyses were performed via the R package "clusterProfiler". The relationships between ReA and various core targets were assessed via molecular docking, and molecular dynamics simulation was conducted for optimal core protein-compound complexes obtained by molecular docking. The top five targets in the ranking of degree value were HSP90AA1, HIF1A, PIK3CA, MTOR, and TLR4. Significant biological processes mainly included response to oxidative stress and response to reactive oxygen species. The potential pathways of ReA in the treatment of SLE mainly focused on the PI3K-Akt signaling pathway, neutrophil extracellular trap formation, and Apoptosis. Molecular docking showed that ReA had the highest binding affinity for mTOR, suggesting that mTOR is a key target of ReA against SLE. Molecular dynamics simulations revealed good binding abilities between ReA and mTOR. In conclusion, ReA exerts its effects on SLE through multiple targets and pathways, with mTOR being a key target of ReA against SLE.
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Affiliation(s)
- Guofei Yang
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China
| | - Mingfang Li
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China
| | - Ying Zhang
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China
| | - Xiaohui Li
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China
| | - Tiantian Xin
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China
| | - Jin Hao
- Department of Dermatology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medica1 University, Guangzhou, China.
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Tang YY, Wang DC, Wang YQ, Huang AF, Xu WD. Emerging role of hypoxia-inducible factor-1α in inflammatory autoimmune diseases: A comprehensive review. Front Immunol 2023; 13:1073971. [PMID: 36761171 PMCID: PMC9905447 DOI: 10.3389/fimmu.2022.1073971] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/13/2022] [Indexed: 01/26/2023] Open
Abstract
Hypoxia-inducible factor-1α (HIF-1α) is a primary metabolic sensor, and is expressed in different immune cells, such as macrophage, dendritic cell, neutrophil, T cell, and non-immune cells, for instance, synovial fibroblast, and islet β cell. HIF-1α signaling regulates cellular metabolism, triggering the release of inflammatory cytokines and inflammatory cells proliferation. It is known that microenvironment hypoxia, vascular proliferation, and impaired immunological balance are present in autoimmune diseases. To date, HIF-1α is recognized to be overexpressed in several inflammatory autoimmune diseases, such as systemic lupus erythematosus (SLE), rheumatoid arthritis, and function of HIF-1α is dysregulated in these diseases. In this review, we narrate the signaling pathway of HIF-1α and the possible immunopathological roles of HIF-1α in autoimmune diseases. The collected information will provide a theoretical basis for the familiarization and development of new clinical trials and treatment based on HIF-1α and inflammatory autoimmune disorders in the future.
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Affiliation(s)
- Yang-Yang Tang
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Da-Cheng Wang
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - You-Qiang Wang
- Department of Laboratory Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - An-Fang Huang
- Department of Rheumatology and Immunology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Wang-Dong Xu
- Department of Evidence-Based Medicine, Southwest Medical University, Luzhou, Sichuan, China,*Correspondence: Wang-Dong Xu,
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Action Sites and Clinical Application of HIF-1α Inhibitors. Molecules 2022; 27:molecules27113426. [PMID: 35684364 PMCID: PMC9182161 DOI: 10.3390/molecules27113426] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/20/2022] [Accepted: 05/23/2022] [Indexed: 01/02/2023] Open
Abstract
Hypoxia-inducible factor-1α (HIF-1α) is widely distributed in human cells, and it can form different signaling pathways with various upstream and downstream proteins, mediate hypoxia signals, regulate cells to produce a series of compensatory responses to hypoxia, and play an important role in the physiological and pathological processes of the body, so it is a focus of biomedical research. In recent years, various types of HIF-1α inhibitors have been designed and synthesized and are expected to become a new class of drugs for the treatment of diseases such as tumors, leukemia, diabetes, and ischemic diseases. This article mainly reviews the structure and functional regulation of HIF-1α, the modes of action of HIF-1α inhibitors, and the application of HIF-1α inhibitors during the treatment of diseases.
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Zeng P, Liu W, Yang X, Zhang S, Du S, Fan Y, Zhao L, Wang A. Qing Zao Fang (QZF) Alleviates the Inflammatory Microenvironment of the Submandibular Gland in Sjögren's Syndrome Based on the PI3K/Akt/HIF-1 α/VEGF Signaling Pathway. DISEASE MARKERS 2022; 2022:6153459. [PMID: 35140821 PMCID: PMC8820932 DOI: 10.1155/2022/6153459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 12/24/2022]
Abstract
Sjögren's syndrome (SS) which could lead to a disorder of our immune system is a chronic autoimmune disease characterized by invading exocrine glands such as salivary glands and lacrimal glands and other exocrine glands. Its common symptom is dry mouth and dry eyes, often accompanied by a large number of lymphocyte infiltrations and can involve other organs to cause complex clinical manifestations. In this study, we aimed at investigating the effect of QZF in SS, identifying the molecular mechanism in modulating autoimmune response, and determining the important roles of these factors' function as a modulator in the pathogenesis of SS. The NOD mice were utilized to establish the rats' model of Sjögren's syndrome. After 10 weeks' hydroxychloroquine and QZF in different dose interference, submandibular gland tissue was collected. The therapeutic effect of QZF on SS rats was identified, and the results suggest the comparable potential to hydroxychloroquine. In submandibular gland tissue, interleukin- (IL-) 17 was significantly lower in high-dose QZF than that in SS rats and the focal lymphocytes were highly attenuated. Moreover, we found that PI3K/Akt signals were activated and the downstream HIF-1α/VEGF signals were enhanced in SS rats whose protein expression could be inhibited by QZF treatment. In addition, QZF could modulate autophagy in submandibular gland tissue and then inhibit the inflammation response and therefore facilitate the tissue repair.
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Affiliation(s)
- Ping Zeng
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Wei Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaochun Yang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
| | - Shumin Zhang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Shaopeng Du
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yihua Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Longmei Zhao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Aihua Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300381, China
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
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HIF-1α and VEGF polymorphisms and systemic lupus erythematosus susceptibility. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Saravani M, Rokni M, Mehrbani M, Amirkhosravi A, Faramarz S, Fatemi I, Esmaeili Tarzi M, Nematollahi MH. The evaluation of VEGF and HIF-1α gene polymorphisms and multiple sclerosis susceptibility. J Gene Med 2019; 21:e3132. [PMID: 31652374 DOI: 10.1002/jgm.3132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 09/03/2019] [Accepted: 10/02/2019] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is an autoimmune disease that leads to myelin sheath destruction. Hypoxia-inducible factor 1 (HIF-1) has several roles in cells, such as inducing inflammation and angiogenesis. Recently, several lines of evidence have indicated the role of the hypoxia response and the HIF-1 signaling pathway in an autoimmune disease such as MS. The present study aimed to evaluate the effects of HIF-1α gene polymorphisms and vascular endothelial growth factor (VEGF) (as a major target gene of HIF-1α) gene polymorphism on MS susceptibility. METHODS In total, 150 MS patients and 150 healthy age- and gender-matched people as a control group participated in the present study. The polymerase chain reaction-restriction fragment length polymorphism method was used for genotyping. RESULTS The results obtained showed that the CC genotype of the VEGF rs699947 polymorphism was significantly higher in the case group than in the control group (p = 0.004). Also, we showed a significant relationship between the VEGF rs699947 polymorphism and MS in a dominant inheritance model (p = 0.005). Regarding the VEGF rs699947 polymorphism allelic distribution, the C allele frequency was significantly higher in the control group than in the case group (71.3% versus 61%, respectively, p = 0.009) and decreased the MS susceptibility by 1.6-fold (odds ratio = 1.6, 95% confidence interval = 1.2-2.2). There was no significant difference between the two groups with respect to HIF-1α rs11549465 genotypic distribution. The HIF-1α C111A polymorphism was non-polymorphic in our study population, except in the case group where nine subjects carried the CA genotype. CONCLUSIONS We show a significant association between VEGF rs60047 polymorphism and MS susceptibility. However, our results do not show a significant association between MS and HIF-1α polymorphisms.
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Affiliation(s)
- Mohsen Saravani
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Rokni
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrzad Mehrbani
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran.,Department of Traditional Medicine, School of Persian Medicine, Kerman University of Medical Sciences, Tehran, Iran
| | - Arian Amirkhosravi
- Food, Drug and Cosmetic Safety Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Sanaz Faramarz
- Kerman Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.,Department of Clinical Biochemistry, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Iman Fatemi
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
| | - Mojdeh Esmaeili Tarzi
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Hadi Nematollahi
- Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran.,Department of Clinical Biochemistry, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
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Zhao W, Wu C, Li LJ, Fan YG, Pan HF, Tao JH, Leng RX, Ye DQ. RNAi Silencing of HIF-1α Ameliorates Lupus Development in MRL/lpr Mice. Inflammation 2019; 41:1717-1730. [PMID: 30043119 DOI: 10.1007/s10753-018-0815-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Th17 cell and IL-17-mediated autoimmunity and inflammatory responses have been implicated in the development of organ damage in systemic lupus erythematosus (SLE), and new evidence suggests that hypoxia-inducible factor 1α (HIF-1α) enhances Th17 differentiation and promotes IL-17 production. However, the role of HIF-1α in the pathogenesis of lupus has not been examined. In this study, we silenced HIF-1α in vivo in a murine model of SLE to investigate whether lupus progression and the associated inflammatory pathways were affected by downregulating HIF-1α. Treatment with HIF1α-shRNA suppressed serum IL-17 level in MRL/lpr mice. Decreased anti-nucleosome antibody level, reduced urinary protein concentrations, ameliorated pathological damage, and remarkably reduced renal IgG and C3 depositions were observed in HIF1α-shRNA-treated group compared to those in the controls. Our results provide the first evidence for a role of HIF-1α in the pathogenesis of lupus and suggest a potential new therapeutic avenue for the treatment of lupus patients through reducing the HIF-1α level.
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Affiliation(s)
- Wei Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Changhao Wu
- Department of Biochemistry and Physiology, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Lian-Ju Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Yin-Guang Fan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Jin-Hui Tao
- Department of Rheumatology and Immunology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Rui-Xue Leng
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China.
| | - Dong-Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China.
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Guan SY, Leng RX, Tao JH, Li XP, Ye DQ, Olsen N, Zheng SG, Pan HF. Hypoxia-inducible factor-1α: a promising therapeutic target for autoimmune diseases. Expert Opin Ther Targets 2017; 21:715-723. [PMID: 28553732 DOI: 10.1080/14728222.2017.1336539] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Hypoxia-inducible factor-1α (HIF-1α) plays a crucial role in both innate and adaptive immunity. Emerging evidence indicates that HIF-1α is associated with the inflammation and pathologic activities of autoimmune diseases. Areas covered: Considering that the types of autoimmune diseases are complicated and various, this review aims to cover the typical kinds of autoimmune diseases, discuss the molecular mechanisms, biological functions and expression of HIF-1α in these diseases, and further explore its therapeutic potential. Expert opinion: Inflammation and hypoxia are interdependent. HIF-1α as a key regulator of hypoxia, exerts a crucial role in the balance between Th17 and Treg, and involves in the inflammation and pathologic activities of autoimmune diseases. Although there are many challenges remaining to be overcome, targeting HIF-1α could be a promising strategy for autoimmune diseases therapies.
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Affiliation(s)
- Shi-Yang Guan
- a Department of Epidemiology and Biostatistics, School of Public Health , Anhui Medical University , Hefei , China.,b Anhui provincial laboratory of population health & major disease screening and diagnosis , Hefei , China
| | - Rui-Xue Leng
- a Department of Epidemiology and Biostatistics, School of Public Health , Anhui Medical University , Hefei , China.,b Anhui provincial laboratory of population health & major disease screening and diagnosis , Hefei , China
| | - Jin-Hui Tao
- c Department of Rheumatology , Anhui Provincial Hospital , Hefei , China
| | - Xiang-Pei Li
- c Department of Rheumatology , Anhui Provincial Hospital , Hefei , China
| | - Dong-Qing Ye
- a Department of Epidemiology and Biostatistics, School of Public Health , Anhui Medical University , Hefei , China.,b Anhui provincial laboratory of population health & major disease screening and diagnosis , Hefei , China
| | - Nancy Olsen
- d Division of Rheumatology , Penn State University Hershey College of Medicine , Hershey , PA , USA
| | - Song Guo Zheng
- d Division of Rheumatology , Penn State University Hershey College of Medicine , Hershey , PA , USA
| | - Hai-Feng Pan
- a Department of Epidemiology and Biostatistics, School of Public Health , Anhui Medical University , Hefei , China.,b Anhui provincial laboratory of population health & major disease screening and diagnosis , Hefei , China
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Gladek I, Ferdin J, Horvat S, Calin GA, Kunej T. HIF1A gene polymorphisms and human diseases: Graphical review of 97 association studies. Genes Chromosomes Cancer 2017; 56:439-452. [PMID: 28165644 PMCID: PMC5395341 DOI: 10.1002/gcc.22449] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 12/15/2022] Open
Abstract
Hypoxia-inducible factors (HIFs) belong to a family of transcription factors (TF) responsive to a low O2 availability, which is often a characteristic feature of solid tumors. The alpha subunit of the HIF heterodimer is O2 -sensitive, and once stabilized in hypoxia, it functions as a master regulator of various genes involved in hypoxia pathway. Changes in the HIF1A (hypoxia inducible factor 1, alpha subunit) nucleotide sequence or expression has been shown to be associated with the development of several diseases. Because of increasing research interest in HIF1A gene a review of association studies was needed. We here reviewed published data on single nucleotide polymorphisms (SNPs) in HIF1A in various diseases; in total, 34 SNPs were tested for an association with 49 phenotypes, and the results were visualized using the Cytoscape software. Among all collected polymorphisms 16 SNPs showed significant associations with 40 different phenotypes, including six SNPs associated with 14 cancer types. Missense SNPs (rs11549465 and rs11549467) within the oxygen-dependent degradation domain were most frequently studied. The study provides a comprehensive tool for researchers working in this area and may contribute to more accurate disease diagnosis and identification of therapeutic targets.
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Affiliation(s)
- I Gladek
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230, Domzale, Slovenia
| | - J Ferdin
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov Trg 2, 1000 Ljubljana, Slovenia
| | - S Horvat
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230, Domzale, Slovenia
- National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia
| | - GA Calin
- Department of Experimental Therapeutics and The Center for RNA Interference and Non-Coding RNAs, The University of Texas, M.D. Anderson Cancer Center, So Campus Research Bldg 3, 1881 East Road, Houston, Texas, 77030, USA
| | - T Kunej
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230, Domzale, Slovenia
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Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease mediated by pathogenic autoantibodies directed against nucleoprotein complexes. Beyond the activation of autoreactive B cells, this process involves dysregulation in many other types of immune cells, including CD4+ T cells, dendritic cells, macrophages and neutrophils. Metabolic substrate utilization and integration of cues from energy sensors are critical checkpoints of effector functions in the immune system, with common as well as cell-specific programmes. Patients with SLE and lupus-prone mice present with activated metabolism of CD4+ T cells, and the use of metabolic inhibitors to normalize these features is associated with therapeutic effects. Far less is known about the metabolic requirements of B cells and myeloid cells in SLE. This article reviews current knowledge of the alterations in metabolism of immune cells in patients with SLE and mouse models of lupus in the context of what is known about the metabolic regulation of these cells during normal immune responses. How these alterations might contribute to lupus pathogenesis and how they can be targeted therapeutically are also discussed.
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Affiliation(s)
- Laurence Morel
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, Florida 32610, USA
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Abstract
Hypoxia elicits an orchestrated response in cells, tissues, and entire organisms to survive a hypoxic challenge. On a molecular level, this response can be controlled by oxygen-dependent stabilization of the transcription factor hypoxia-inducible factor (HIF)-1α. Recently, studies have shown that HIF-1α plays an important role in the development and function of T helper (Th) cells, regulatory T (Treg) cells, and dendritic cells (DCs). Because these cells are critical in the pathogenesis of autoimmune diseases, such as systemic lupus erythematosus and rheumatoid arthritis, the roles of HIF-1α in these autoimmune disorders cannot be neglected. In this review, we discuss recent findings on the important roles of HIF-1α in immune cells and the possible pathologic roles of HIF-1α in autoimmune diseases. The obtained information may lead to deeper insights into the roles of HIF-1α in these disorders.
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Affiliation(s)
- Zu-Cheng Yang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, People's Republic of China
| | - Yi Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, People's Republic of China.
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