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Škrlec I, Kolomeichuk SN. Hypoxia-inducible factor-1α in myocardial infarction. World J Cardiol 2024; 16:181-185. [DOI: 10.4330/wjc.v16.i4.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/26/2024] [Accepted: 03/04/2024] [Indexed: 04/23/2024] Open
Abstract
Hypoxia-inducible factor 1 (HIF1) has a crucial function in the regulation of oxygen levels in mammalian cells, especially under hypoxic conditions. Its importance in cardiovascular diseases, particularly in cardiac ischemia, is because of its ability to alleviate cardiac dysfunction. The oxygen-responsive subunit, HIF1α, plays a crucial role in this process, as it has been shown to have cardioprotective effects in myocardial infarction through regulating the expression of genes affecting cellular survival, angiogenesis, and metabolism. Furthermore, HIF1α expression induced reperfusion in the ischemic skeletal muscle, and hypoxic skin wounds in diabetic animal models showed reduced HIF1α expression. Increased expression of HIF1α has been shown to reduce apoptosis and oxidative stress in cardiomyocytes during acute myocardial infarction. Genetic variations in HIF1α have also been found to correlate with altered responses to ischemic cardiovascular disease. In addition, a link has been established between the circadian rhythm and hypoxic molecular signaling pathways, with HIF1α functioning as an oxygen sensor and circadian genes such as period circadian regulator 2 responding to changes in light. This editorial analyzes the relationship between HIF1α and the circadian rhythm and highlights its significance in myocardial adaptation to hypoxia. Understanding the changes in molecular signaling pathways associated with diseases, specifically cardiovascular diseases, provides the opportunity for innovative therapeutic interventions, especially in low-oxygen environments such as myocardial infarction.
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Affiliation(s)
- Ivana Škrlec
- Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek 31000, Croatia
| | - Sergey N Kolomeichuk
- Institute of Biology, Karelia Research Center of Russian Academy of Sciences, Petrozavodsk 185910, Russia
- Laboratory for Genomics, Proteomics, and Metabolomics, Research Institute of Biomedicine and Biomedical Technologies, Tyumen State Medical University, Tyumen 625023, Russia
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Zhou F, Wang S, Lu W, Chen X, Guo S, Lu C, Zhang X, Wu J, Wang S, Long Z, He B, Zhuang T, Xu X. The Essential Role of PGF2α/PTGFR in Molding Endometrial Breakdown and Vascular Dynamics, Regulated by HIF-1α in a Mouse Menstrual-like Model. Reprod Sci 2024:10.1007/s43032-024-01526-7. [PMID: 38637474 DOI: 10.1007/s43032-024-01526-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/19/2024] [Indexed: 04/20/2024]
Abstract
In women of childbearing age, extensive decidualization, shedding and remodeling of the endometrium during the menstrual cycle are fundamental for successful pregnancy. The role of prostaglandins (PGs) in menstruation has long been proposed in humans, and the rate-limiting enzyme cyclooxygenase was shown to play a key role in endometrial breakdown and shedding in a mouse menstrual-like model in our previous study. However, the specific types of PGs involved and their respective roles remain unclear. Therefore, our objective was to investigate the mechanism through which PGs regulate endometrial disintegration. In this study, the microscopy was observed by HE; the protein levels of prostaglandins E1 (PGE1), prostaglandins E2 (PGE2), prostaglandin F2α (PGF2α) and Prostaglandin I2 (PGI2) were detected by ELISA; the mRNA level of Pfgfr2, Vascular Endothelial Growth Factor(Vegf), Angiostatin and Hypoxia inducible factor-1α (Hif1α) were examined by real-time PCR; PTGFR Receptor (PTGFR), VEGF, Angiostatin and HIF-1α protein levels were investigated by western blotting; the locations of protein were observed by Immunohistochemistry; HIF-1α binding PTGFR promoter was detected by Chromatin Immunoprecipitation (ChIP) and real-time PCR. We found that the concentrations of PGE1, PGE2, and PGF2α all increased significantly during this process. Furthermore, Ptgfr mRNA increased soon after Progesterone (P4) withdrawal, and PTGFR protein levels increased significantly during abundant endometrial breakdown and shedding processes. PTGFR inhibitors AL8810 significantly suppressed endometrial breakdown and shedding, promoted Angiostatin expression, and reduced VEGF-A expressions and vascular permeability. And HIF-1α and PTGFR were mainly located in the luminal/gland epithelium, vascular endothelium, and pre-decidual zone. Interestingly, HIF-1α directly bound to Ptgfr promoter. Moreover, a HIF-1α inhibitor 2-methoxyestradiol (2ME) significantly reduced PTGFR expression and suppressed endometrial breakdown which was in accord with PTGFR inhibitor's effect. Similar changes occurred in human stromal cells relevant to menstruation in vitro. Our study provides evidence that PGF2α/PTGFR plays a vital role in endometrial breakdown via vascular changes that are regulated by HIF-1α during menstruation.
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Affiliation(s)
- Fang Zhou
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Human Sperm Bank, National Research Institute for Family Planning, Beijing, China
| | - Shufang Wang
- Department of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Wenhong Lu
- Human Sperm Bank, National Research Institute for Family Planning, Beijing, China
| | - Xihua Chen
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Shige Guo
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Cong Lu
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Xin Zhang
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Jiangxu Wu
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Siyu Wang
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Zeyi Long
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Bin He
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Taifeng Zhuang
- Beijing Obstetrics & Gynecology Hospital, Capital Medical University, Beijing Maternal &. Child Health Care Hospital, Beijing, China
| | - Xiangbo Xu
- Reproductive Physiology Laboratory, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China.
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Ruan Q, Geng Y, Zhao M, Zhang H, Cheng X, Zhao T, Yue X, Jiang X, Jiang X, Hou XY, Zhu LL. Prolyl hydroxylase inhibitor FG-4592 alleviates neuroinflammation via HIF-1/BNIP3 signaling in microglia. Biomed Pharmacother 2024; 173:116342. [PMID: 38430635 DOI: 10.1016/j.biopha.2024.116342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/14/2024] [Accepted: 02/23/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND Neuroinflammation is responsible for neuropsychiatric dysfunction following acute brain injury and neurodegenerative diseases. This study describes how a hypoxia-inducible factor prolyl hydroxylase (HIF-PHD) inhibitor FG-4592 prevents the lipopolysaccharide (LPS)-induced acute neuroinflammation in microglia. METHODS The distribution of FG-4592 in mouse brain tissues was determined by collision-induced dissociation tandem mass spectrometry. Microglial activation in the hippocampus was analyzed by immunofluorescence. Moreover, we determined the activation of HIF-1 and nuclear factor-κB (NF-κB) signaling pathways, proinflammatory responses using molecular biological techniques. Transcriptome sequencing and BNIP3 silencing were conducted to explore signaling pathway and molecular mechanisms underlying FG-4592 anti-inflammatory activity. RESULTS FG-4592 was transported into the brain tissues and LPS increased its transportation. FG-4592 promoted the expression of HIF-1α and induced the downstream gene transcription in the hippocampus. Administration with FG-4592 significantly inhibited microglial hyperactivation and decreased proinflammatory cytokine levels following LPS treatment in the hippocampus. The LPS-induced inflammatory responses and the NF-κB signaling pathway were also downregulated by FG-4592 pretreatment in microglial cells. Mechanistically, Venn diagram analysis of transcriptomic changes of BV2 cells identified that BNIP3 was a shared and common differentially expressed gene among different treatment groups. FG-4592 markedly upregulated the protein levels of BNIP3 in microglia. Importantly, BNIP3 knockdown aggravated the LPS-stimulated inflammatory responses and partially reversed the protection of FG-4592 against microglial inflammatory signaling and microglial activation in the mouse hippocampus. CONCLUSIONS FG-4592 alleviates neuroinflammation through facilitating microglial HIF-1/BNIP3 signaling pathway in mice. Targeting HIF-PHD/HIF-1/BNIP3 axis is a promising strategy for the development of anti-neuroinflammation drugs.
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Affiliation(s)
- Qianqian Ruan
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China; State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 211198, China; Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yanan Geng
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Ming Zhao
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Heyang Zhang
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiang Cheng
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Tong Zhao
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiangpei Yue
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiufang Jiang
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiaoxia Jiang
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Xiao-Yu Hou
- State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu 211198, China.
| | - Ling-Ling Zhu
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226019, China.
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Park JH, Kwon S, Park YM. Extracellular Vimentin Alters Energy Metabolism And Induces Adipocyte Hypertrophy. Diabetes Metab J 2024; 48:215-230. [PMID: 37750184 PMCID: PMC10995492 DOI: 10.4093/dmj.2022.0332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/19/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGRUOUND Previous studies have reported that oxidative stress contributes to obesity characterized by adipocyte hypertrophy. However, mechanism has not been studied extensively. In the current study, we evaluated role of extracellular vimentin secreted by oxidized low-density lipoprotein (oxLDL) in energy metabolism in adipocytes. METHODS We treated 3T3-L1-derived adipocytes with oxLDL and measured vimentin which was secreted in the media. We evaluated changes in uptake of glucose and free fatty acid, expression of molecules functioning in energy metabolism, synthesis of adenosine triphosphate (ATP) and lactate, markers for endoplasmic reticulum (ER) stress and autophagy in adipocytes treated with recombinant vimentin. RESULTS Adipocytes secreted vimentin in response to oxLDL. Microscopic evaluation revealed that vimentin treatment induced increase in adipocyte size and increase in sizes of intracellular lipid droplets with increased intracellular triglyceride. Adipocytes treated with vimentin showed increased uptake of glucose and free fatty acid with increased expression of plasma membrane glucose transporter type 1 (GLUT1), GLUT4, and CD36. Vimentin treatment increased transcription of GLUT1 and hypoxia-inducible factor 1α (Hif-1α) but decreased GLUT4 transcription. Adipose triglyceride lipase (ATGL), peroxisome proliferator-activated receptor γ (PPARγ), sterol regulatory element-binding protein 1 (SREBP1), diacylglycerol O-acyltransferase 1 (DGAT1) and 2 were decreased by vimentin treatment. Markers for ER stress were increased and autophagy was impaired in vimentin-treated adipocytes. No change was observed in synthesis of ATP and lactate in the adipocytes treated with vimentin. CONCLUSION We concluded that extracellular vimentin regulates expression of molecules in energy metabolism and promotes adipocyte hypertrophy. Our results show that vimentin functions in the interplay between oxidative stress and metabolism, suggesting a mechanism by which adipocyte hypertrophy is induced in oxidative stress.
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Affiliation(s)
- Ji-Hae Park
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
| | - Soyeon Kwon
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
| | - Young Mi Park
- Department of Medicine, Graduate School, Ewha Womans University, Seoul, Korea
- Department of Molecular Medicine, Ewha Womans University College of Medicine, Seoul, Korea
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Pan J, Zhang L, Li D, Li Y, Lu M, Hu Y, Sun B, Zhang Z, Li C. Hypoxia-inducible factor-1: Regulatory mechanisms and drug therapy in myocardial infarction. Eur J Pharmacol 2024; 963:176277. [PMID: 38123007 DOI: 10.1016/j.ejphar.2023.176277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/30/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Myocardial infarction (MI), an acute cardiovascular disease characterized by coronary artery blockage, inadequate blood supply, and subsequent ischemic necrosis of the myocardium, is one of the leading causes of death. The cellular, physiological, and pathological responses following MI are complex, involving multiple intertwined pathological mechanisms. Hypoxia-inducible factor-1 (HIF-1), a crucial regulator of hypoxia, plays a significant role in of the development of MI by modulating the behavior of various cells such as cardiomyocytes, endothelial cells, macrophages, and fibroblasts under hypoxic conditions. HIF-1 regulates various post-MI adaptive reactions to acute ischemia and hypoxia through various mechanisms. These mechanisms include angiogenesis, energy metabolism, oxidative stress, inflammatory response, and ventricular remodeling. With its crucial role in MI, HIF-1 is expected to significantly influence the treatment of MI. However, the drugs available for the treatment of MI targeting HIF-1 are currently limited, and most contain natural compounds. The development of precision-targeted drugs modulating HIF-1 has therapeutic potential for advancing MI treatment research and development. This study aimed to summarize the regulatory role of HIF-1 in the pathological responses of various cells following MI, the diverse mechanisms of action of HIF-1 in MI, and the potential drugs targeting HIF-1 for treating MI, thus providing the theoretical foundations for potential clinical therapeutic targets.
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Affiliation(s)
- Jinyuan Pan
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Lei Zhang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Dongxiao Li
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Yuan Li
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Mengkai Lu
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Yuanlong Hu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Bowen Sun
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Zhiyuan Zhang
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Chao Li
- Qingdao Traditional Chinese Medicine Hospital (Qingdao Hiser Hospital), Qingdao, 266000, China.
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Oza HH, Gilkes DM. Multiplex Immunofluorescence Staining Protocol for the Dual Imaging of Hypoxia-Inducible Factors 1 and 2 on Formalin-Fixed Paraffin-Embedded Samples. Methods Mol Biol 2024; 2755:167-178. [PMID: 38319577 DOI: 10.1007/978-1-0716-3633-6_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Hypoxia is a common condition in rapidly proliferating tumors and occurs when oxygen delivery to the tissue is scarce. It is a prevalent feature in ~90% of solid tumors. The family of HIF (hypoxia-inducible factor) proteins-HIF1α and HIF2α-are the main transcription factors that regulate the response to hypoxia. These transcription factors regulate numerous downstream gene targets that promote the aggressiveness of tumors and therefore have been linked to worse prognosis in patients. This makes them a potential biomarker to be tested in the clinical setting to predict patient outcomes. However, HIFs have been notoriously challenging to immunolabel, in part due to their fast turnover under normal oxygen conditions. In this work, we developed a multiplexed immunofluorescence (mIF) staining protocol for the simultaneous detection of HIF1α and HIF2α in the same formalin-fixed paraffin-embedded (FFPE) tissue section.
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Affiliation(s)
- Harsh H Oza
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Daniele M Gilkes
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Yin CL, Ma YJ. The Regulatory Mechanism of Hypoxia-inducible Factor 1 and its Clinical Significance. Curr Mol Pharmacol 2024; 17:e18761429266116. [PMID: 38389420 DOI: 10.2174/0118761429266116231123160809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/11/2023] [Accepted: 10/24/2023] [Indexed: 02/24/2024]
Abstract
Hypoxia-inducible factor (HIF) is a nuclear protein that plays a crucial role in oxygen homeostasis through its transcriptional activity and thousands of target gene profiles. Through transcriptional and post-transcriptional regulation, the downstream target genes of HIF can trigger multiple pathological responses in the body, including energy metabolism, cytopenia, and angiogenesis. There are three distinct subtypes of HIF: HIF-1, HIF-2, and HIF-3. HIF-1 is a significant regulator of the cellular response to hypoxia, and the balance between its production and degradation is critical for this response. As hypoxia is linked to several disorders, understanding HIF can open up novel avenues for the treatment of many diseases. This review describes the regulatory mechanisms of HIF-1 synthesis and degradation and the clinical significance of the hypoxia-inducible factor pathway in lung injury, kidney disease, hematologic disorders, and inflammation-related diseases.
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Affiliation(s)
- Chun-Li Yin
- Air Force Clinical College of Anhui Medical University, The Fifth Clinical College of Anhui Medical University, Hefei 230032, China
- Department of Critical Care Medicine, PLA Air Force Medical Center, Beijing 100142, China
| | - Yu-Jie Ma
- Air Force Clinical College of Anhui Medical University, The Fifth Clinical College of Anhui Medical University, Hefei 230032, China
- Department of Critical Care Medicine, PLA Air Force Medical Center, Beijing 100142, China
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Yang X, Wang J, Dai X, Ma N, Cheng H, Guo H, Chen S, Huang Y, Wu J. The mechanism and targeted intervention of the HIF-1 pathway in improving atherosclerotic heart's sensitivity to ischemic postconditioning. Free Radic Biol Med 2023; 208:494-509. [PMID: 37660838 DOI: 10.1016/j.freeradbiomed.2023.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
BACKGROUND IPoC possesses a preventive effect against IR injury in healthy myocardium, but IPoC's protective effect on atherosclerotic myocardium is controversial. The current investigation aims to determine whether IPoC remains protective in atherosclerotic myocardium subjected to ischemia-reperfusion (IR) injury; to explore the specific mechanisms by which IPoC exerts cardioprotection; to explore whether HIF-1 upregulation combined with IPoC could further the provide cardioprotection; and to gaze at the specific mechanism whereby combined treatment expert the cardioprotection. METHODS ApoE-/- mice fed with a high-fat diet (HFD) were used to develop a model of atherosclerosis. The myocardial IR model was induced by occlusion of the left anterior descending (LAD) artery for 45 min, followed by reperfusion for 120 min. The protection of IPoC in both healthy and atherosclerotic myocardium was evaluated by measuring oxidative stress, apoptosis, infarct size, pathology, mitochondrial dysfunction and morphology of myocardium. The specific mechanism by which IPoC exerts cardioprotection in healthy and atherosclerotic myocardium was observed by measuring the expression of proteins involved in HIF-1, APMK and RISK pathways. The effect of HIF-1α overexpression on the cardioprotection by IPoC was observed by intravenous AAV9 -HIF-1α injection. RESULTS In healthy ischemic myocardium, IPoC exerted myocardial protective effects (antioxidant, anti-apoptosis, and improved mitochondrial function) through the activation of HIF-1, AMPK and RISK pathways. In atherosclerotic ischemic myocardium, IPoC exerted cardioprotection only through the activation of HIF-1 pathway; however, HIF-1 overexpression combined IPoC restored the activation of AMPK and RISK pathways, thereby further alleviating the myocardial IR injury. CONCLUSIONS In the atherosclerotic state, the HIF-1 pathway is the intrinsic mechanism by which IPoC exerts cardioprotective effects. The combination of HIF-1 upregulation and IPoC has a significant effect in reducing myocardial injury, which is worth being promoted and advocated. In addition, HIF-1-AMPK and HIF-1-RISK may be two endogenous cardioprotective signalling pathways with great value, which deserve to be thoroughly investigated in the future.
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Affiliation(s)
- Xue Yang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jiang Wang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiaowen Dai
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ning Ma
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hu Cheng
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hai Guo
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Siyu Chen
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yidan Huang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jianjiang Wu
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.
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Guimarães MGM, Tapioca FPM, Neves FC, Moura-Neto JA, Passos LCS. Association of Hypoxia-Inducible Factor Prolyl Hydroxylase Inhibitors with Cardiovascular Events and Death in Dialysis Patients: A Systematic Review and Meta-Analysis. Blood Purif 2023; 52:721-728. [PMID: 37459846 DOI: 10.1159/000531274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/18/2023] [Indexed: 09/13/2023]
Abstract
BACKGROUND Anemia is a common finding among patients with advanced chronic kidney disease, especially those on dialysis. The recent introduction of hypoxia-inducible factor prolyl hydroxylase inhibitors (HIF-PHIs) has raised some concerns about the cardiovascular and thrombotic complications of this class of drugs. OBJECTIVES This meta-analysis aimed to assess the safety of HIF-PHIs in patients with end-stage kidney disease (ESKD) versus standard therapy with erythropoiesis-stimulating agents (ESAs). METHODS Databases were searched on April 2022. Studies that reported incidence of all-cause mortality; major cardiovascular adverse events (MACEs); myocardial infarction (MI); stroke and thrombotic events in the use of HIF-PHIs or ESA on ESKD patients in hemodialysis or peritoneal dialysis were evaluated. Data were extracted from published reports, and quality assessment was performed per Cochrane recommendations. RESULTS 12,821 patients from ten randomized controlled trials were included in this study. Most patients (83%) were on hemodialysis. 6,461 (50.3%) were using HIF-PHIs, and 6,360 (49.6%) were in the ESA group. The pooled estimated incidence of all-cause mortality was 769 in the HIF-PHIs group (relative-risk ratios (RR): 1.04; confidence interval (CI): 0.95-1.14; p = 0.52; I2 = 0%). There was no difference in the groups regarding the outcomes of MACE in the analysis of the three studies that reported this outcome (RR: 0.95; CI: 0.87-1.04; p = 0.69; I2 = 0%). In addition, there was no statistical difference among the outcomes of MI, stroke, or thrombotic events. CONCLUSIONS Among patients with ESKD on dialysis, the use of HIF-PHIs was non-inferior regarding the safety outcomes when compared to standard of care therapy.
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Affiliation(s)
| | - Fernanda Pinheiro Martin Tapioca
- Cardiorenal Division, Hospital Ana Nery, Salvador, Brazil
- Medicine and Health Program, Federal University of Bahia, Salvador, Brazil
- Bahiana School of Medicine and Public Health, Salvador, Brazil
| | - Felipe Costa Neves
- Cardiorenal Division, Hospital Ana Nery, Salvador, Brazil
- Bahiana School of Medicine and Public Health, Salvador, Brazil
| | | | - Luiz Carlos Santana Passos
- Cardiorenal Division, Hospital Ana Nery, Salvador, Brazil
- Medicine and Health Program, Federal University of Bahia, Salvador, Brazil
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Aschner M, Skalny AV, Lu R, Santamaria A, Zhou JC, Ke T, Karganov MY, Tsatsakis A, Golokhvast KS, Bowman AB, Tinkov AA. The role of hypoxia-inducible factor 1 alpha (HIF-1α) modulation in heavy metal toxicity. Arch Toxicol 2023; 97:1299-1318. [PMID: 36933023 DOI: 10.1007/s00204-023-03483-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/02/2023] [Indexed: 03/19/2023]
Abstract
Hypoxia-inducible factor 1 (HIF-1) is an oxygen-sensing transcriptional regulator orchestrating a complex of adaptive cellular responses to hypoxia. Several studies have demonstrated that toxic metal exposure may also modulate HIF-1α signal transduction pathway, although the existing data are scarce. Therefore, the present review aims to summarize the existing data on the effects of toxic metals on HIF-1 signaling and the potential underlying mechanisms with a special focus on prooxidant effect of the metals. The particular effect of metals was shown to be dependent on cell type, varying from down- to up-regulation of HIF-1 pathway. Inhibition of HIF-1 signaling may contribute to impaired hypoxic tolerance and adaptation, thus promoting hypoxic damage in the cells. In contrast, its metal-induced activation may result in increased tolerance to hypoxia through increased angiogenesis, thus promoting tumor growth and contributing to carcinogenic effect of heavy metals. Up-regulation of HIF-1 signaling is mainly observed upon Cr, As, and Ni exposure, whereas Cd and Hg may both stimulate and inhibit HIF-1 pathway. The mechanisms underlying the influence of toxic metal exposure on HIF-1 signaling involve modulation of prolyl hydroxylases (PHD2) activity, as well as interference with other tightly related pathways including Nrf2, PI3K/Akt, NF-κB, and MAPK signaling. These effects are at least partially mediated by metal-induced ROS generation. Hypothetically, maintenance of adequate HIF-1 signaling upon toxic metal exposure through direct (PHD2 modulation) or indirect (antioxidant) mechanisms may provide an additional strategy for prevention of adverse effects of metal toxicity.
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Affiliation(s)
- Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Anatoly V Skalny
- IM Sechenov First Moscow State Medical University (Sechenov University), 119435, Moscow, Russia
| | - Rongzhu Lu
- Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Abel Santamaria
- Laboratorio de Aminoácidos Excitadores/Laboratorio de Neurofarmacología Molecular y Nanotecnología, Instituto Nacional de Neurología y Neurocirugía, 14269, Mexico City, Mexico
| | - Ji-Chang Zhou
- School of Public Health (Shenzhen), Sun Yat-Sen University, Shenzhen, 518100, China
| | - Tao Ke
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | | | - Aristides Tsatsakis
- IM Sechenov First Moscow State Medical University (Sechenov University), 119435, Moscow, Russia.,Laboratory of Toxicology, Medical School, University of Crete, Voutes, 700 13, Heraklion, Crete, Greece
| | - Kirill S Golokhvast
- Siberian Federal Scientific Centre of Agrobiotechnologies of the Russian Academy of Sciences, Krasnoobsk, Russia
| | - Aaron B Bowman
- School of Health Sciences, Purdue University, West Lafayette, USA
| | - Alexey A Tinkov
- IM Sechenov First Moscow State Medical University (Sechenov University), 119435, Moscow, Russia. .,Laboratory of Ecobiomonitoring and Quality Control, Yaroslavl State University, 150003, Yaroslavl, Russia.
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11
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Blichárová A, Tancoš V, Benetinová Z, Verbóová Ľ, Grendár M, Mazuráková A, Plank L, Mechírová E. Programmed death ligand-1 expression and its association with the degree of differentiation and the presence of necrosis in non-small cell lung carcinoma. Pathol Res Pract 2023; 242:154296. [PMID: 36610327 DOI: 10.1016/j.prp.2022.154296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023]
Abstract
The mechanisms underlying the expression of programmed death ligand-1 (PD-L1) in non-small cell lung carcinoma (NSCLC) are not yet fully clarified. In this study, surgical resections of 730 lung cancer patients with diagnosed NSCLC were analyzed. Results of PD-L1 immunohistochemistry (using clone 22C3) were correlated with clinicopathological variables including the degree of tumor differentiation and the presence of confluent areas of coagulative necrosis. PD-L1 immunohistochemistry was analyzed in tumor cells, whereas PD-L1 positivity was defined as membranous staining in ≥ 1 of tumor cells. A significantly higher proportion of PD-L1 positive cases was noted in poorly differentiated (grade 3) adenocarcinomas compared to better differentiated (grade 1 and grade 2) subtypes (63.8 % vs. 28.7 %; p < 0.001). Contrary to this, better differentiated (keratinizing) and less differentiated (non-keratinizing) squamous cell carcinoma subtypes were found to have a similar proportion of PD-L1 positive cases (51.4 % vs. 55.8 %; p = 0.570). High levels of PD-L1 expression significantly correlated with the presence of necrosis in NSCLC: seventy-nine of 109 NSCLC cases with the presence of necrosis were PD-L1 positive compared to 256 out of 621 NSCLC without necrosis (72.5 % vs. 41.2 %; p < 0.001). High PD-L1 expression was not positively correlated with age, gender, and advanced T stage but a significant association between PD-L1 positivity and higher N stage was observed (p < 0.001) in NSCLC patients. In conclusion, the proportion of PD-L1 positive cases is higher only in poorly differentiated NSCLC of the adenocarcinoma type. A significantly higher overall rate of PD-L1 positive cases was noted in NSCLC with the presence of necrosis. Further investigation is suggested to elucidate the intricated interconnections between the plethora of hypoxic biomarkers and immunological factors in different types and subtypes of NSCLC.
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Affiliation(s)
- Alžbeta Blichárová
- Department of Pathology, Pavol Jozef Šafárik University in Košice, Faculty of Medicine, Rastislavova 43, 040 01 Košice, Slovakia
| | - Vladimír Tancoš
- Department of Pathology, Pavol Jozef Šafárik University in Košice, Faculty of Medicine, Rastislavova 43, 040 01 Košice, Slovakia.
| | - Zuzana Benetinová
- Department of Pathology, Pavol Jozef Šafárik University in Košice, Faculty of Medicine, Rastislavova 43, 040 01 Košice, Slovakia
| | - Ľudmila Verbóová
- Department of Pathology, Pavol Jozef Šafárik University in Košice, Faculty of Medicine, Rastislavova 43, 040 01 Košice, Slovakia
| | - Marián Grendár
- Department of Bioinformatics, Biomedical Centre Martin, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, Mala Hora 4C, 03601 Martin, Slovakia
| | - Alena Mazuráková
- Department of anatomy, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollárova 2, 03601 Martin, Slovakia
| | - Lukáš Plank
- Department of Pathological Anatomy, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollárova 2, 03659 Martin, Slovakia
| | - Eva Mechírová
- Department of Histology and Embryology, Pavol Jozef Šafárik University in Košice, Faculty of Medicine, Šrobárova 2, 041 80 Košice, Slovakia
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12
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Alves CC, Arns T, Oliveira ML, Moreau P, Antunes DA, Castelli EC, Mendes-Junior CT, Giuliatti S, Donadi EA. Computational and atomistic studies applied to the understanding of the structural and behavioral features of the immune checkpoint HLA-G molecule and gene. Hum Immunol 2023:S0198-8859(23)00004-6. [PMID: 36710086 DOI: 10.1016/j.humimm.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/29/2023]
Abstract
We took advantage of the increasingly evolving approaches for in silico studies concerning protein structures, protein molecular dynamics (MD), protein-protein and protein-DNA docking to evaluate: (i) the structure and MD characteristics of the HLA-G well-recognized isoforms, (ii) the impact of missense mutations at HLA-G receptor genes (LILRB1/2), and (iii) the differential binding of the hypoxia-inducible factor 1 (HIF1) to hypoxia-responsive elements (HRE) at the HLA-G gene. Besides reviewing these topics, they were revisited including the following novel results: (i) the HLA-G6 isoforms were unstable docked or not with β2-microglobulin or peptide, (ii) missense mutations at LILRB1/2 genes, exchanging amino acids at the intracellular domain, particularly those located within and around the ITIM motifs, may impact the HLA-G binding strength, and (iii) HREs motifs at the HLA-G promoter or exon 2 regions exhibiting a guanine at their third position present a higher affinity for HIF1 when compared to an adenine at the same position. These data shed some light into the functional aspects of HLA-G, particularly how polymorphisms may influence the role of the molecule. Computational and atomistic studies have provided alternative tools for experimental physical methodologies, which are time-consuming, expensive, demanding large quantities of purified proteins, and exhibit low output.
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Affiliation(s)
- Cinthia C Alves
- Department of Medicine, Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil
| | - Thaís Arns
- Luxembourg Centre for Systems Biomedicine, Luxembourg
| | - Maria L Oliveira
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil
| | - Philippe Moreau
- CEA, DRF-Institut François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, France; U976 HIPI Unit, IRSL, Université Paris-Cité, Paris, France
| | - Dinler A Antunes
- Department of Biology and Biochemistry, University of Houston, Houston, USA
| | - Erick C Castelli
- Department of Pathology, School of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Celso T Mendes-Junior
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Silvana Giuliatti
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil
| | - Eduardo A Donadi
- Department of Medicine, Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, SP, Brazil.
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13
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Park JH, Lee HK. The Role of Hypoxia in Brain Tumor Immune Responses. Brain Tumor Res Treat 2023; 11:39-46. [PMID: 36762807 PMCID: PMC9911710 DOI: 10.14791/btrt.2022.0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 02/05/2023] Open
Abstract
Oxygen is a vital component of living cells. Low levels of oxygen in body tissues, known as hypoxia, can affect multiple cellular functions across a variety of cell types and are a hallmark of brain tumors. In the tumor microenvironment, abnormal vasculature and enhanced oxygen consumption by tumor cells induce broad hypoxia that affects not only tumor cell characteristics but also the antitumor immune system. Although some immune reactions require hypoxia, hypoxia generally negatively affects immunity. Hypoxia induces tumor cell invasion, cellular adaptations to hypoxia, and tumor cell radioresistance. In addition, hypoxia limits the efficacy of immunotherapy and hinders antitumor responses. Therefore, understanding the role of hypoxia in the brain tumor, which usually does not respond to immunotherapy alone is important for the development of effective anti-tumor therapies. In this review, we discuss recent evidence supporting the role of hypoxia in the context of brain tumors.
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Affiliation(s)
- Jang Hyun Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.
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14
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Albogami SM, Al-Kuraishy HM, Al-Maiahy TJ, Al-Buhadily AK, Al-Gareeb AI, Alorabi M, Alotaibi SS, De Waard M, Sabatier JM, Saad HM, Batiha GES. Hypoxia-Inducible Factor 1 and Preeclampsia: A New Perspective. Curr Hypertens Rep 2022; 24:687-692. [PMID: 36342613 DOI: 10.1007/s11906-022-01225-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2022] [Indexed: 11/09/2022]
Abstract
PURPOSE OF REVIEW Preeclampsia (PE) is a serious and distinct type of pregnancy-induced hypertension, with an incidence of 2-8% worldwide. PE is defined as pregnancy-related hypertension with proteinuria and peripheral edema after 20 weeks of gestation. Hypoxic placenta triggers the release of inflammatory and humoral substances into maternal circulation, leading to induction of oxidative stress, lipid peroxidation, endothelial dysfunction, and peripheral vasoconstriction. The objective of the present narrative review was to find the association between PE and hypoxia-inducible factor 1 (HIF-1) in pregnant women from a new perspective. RECENT FINDINGS HIF-1 is the key transcription factor that regulates cellular responses to hypoxia and low oxygen tension. HIF-1α is involved in the differentiation and growth of the placenta mainly in the first and second trimesters. During normal gestation, HIF-1α responds to the alterations in oxygen tension, cytokine, and angiogenic factors release. HIF-1α is considered a key biomarker of placental function and vascularization during pregnancy. HIF-1α plays a crucial role in the pathogenesis of PE through activation of anti-angiogenic and inhibition of proangiogenic factors. As well, HIF-1α increases the expression of the p38MAPK and NLRP3 inflammasomes, which promote placental inflammation and dysfunction. HIF-1α acts as a potential link between inflammatory signaling pathways and the development of PE.
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Affiliation(s)
- Sarah M Albogami
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Hayder M Al-Kuraishy
- Department of Pharmacology, Toxicology and Medicine College of Medicine, Al-Mustansiriyah University, P.O. Box 14132, Baghdad, Iraq
| | - Thabat J Al-Maiahy
- Department of Gynecology and Obstetrics, College of Medicine, Al-Mustansiriyah University, P.O. Box 14132, Baghdad, Iraq
| | - Ali K Al-Buhadily
- Department of Clinical Pharmacology, Medicine and Therapeutic, Medical Faculty, College of Medicine, Al Mustansiriyah University, P.O. Box 14132, Baghdad, Iraq
| | - Ali I Al-Gareeb
- Department of Pharmacology, Toxicology and Medicine College of Medicine, Al-Mustansiriyah University, P.O. Box 14132, Baghdad, Iraq
| | - Mohammed Alorabi
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Saqer S Alotaibi
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Michel De Waard
- Smartox Biotechnology, 6 rue des Platanes, 38120, Saint-Egrève, France.,L'institut Du Thorax, CNRS, Univ Nantes, 44007, InsermNantes, France.,LabEx Ion Channels, Université de Nice Sophia-Antipolis, Science & Therapeutics, 06560, Valbonne, France
| | - Jean-Marc Sabatier
- Institut de Neurophysiopathologie (INP), UMR 7051, Faculté Des Sciences Médicales Et Paramédicales, Aix-Marseille Université, CNRS, 27 Bd Jean Moulin, 13005, Marseille, France
| | - Hebatallah M Saad
- Department of Pathology, Faculty of Veterinary Medicine, Matrouh University, Marsa Matruh, 51744, Egypt.
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt.
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15
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Sadri M, Delbandi AA, Rashidi N, Kardar GA, Falak R. Cobalt Chloride-induced Hypoxia Can Lead SKBR3 and HEK293T Cell Lines toward Epithelial-mesenchymal Transition. Iran J Allergy Asthma Immunol 2022; 21:449-457. [PMID: 36243933 DOI: 10.18502/ijaai.v21i4.10292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/16/2022] [Indexed: 06/16/2023]
Abstract
Hypoxia is a common characteristic of the tumor microenvironment. In response to hypoxia, expression of the hypoxia-inducible factor (HIF) can lead to activation of downstream molecular events such as epithelial-mesenchymal transition (EMT), invasion, and angiogenesis. In this study, CoCl2 was used to simulate hypoxia in SKBR3 and HEK293T cell lines to investigate whether this treatment can induce hypoxia-associated EMT and invasion in the studied cells. SKBR3 and HEK293T cells were treated with different concentrations of CoCl2 at different exposure times and their viability was analyzed. To confirm successful hypoxia induction, the expression levels of HIF1α and vascular endothelial growth factor A (VEGFA) mRNA were assessed. Additionally, the expression of EMT-associated markers including snail, E-cadherin, N-cadherin, and vimentin, as well as invasion-related genes including matrix metalloproteinase-2 (MMP2) and MMP9 was measured. We found that cell viability in CoCl2-treated cells was concentration-dependent and was not affected at low doses. While the expression of HIF and VEGFA genes was upregulated following hypoxia induction. E-cadherin expression was significantly downregulated in HEK293T cells; while, N-cadherin and snail were upregulated in both cell lines. Moreover, an increment of MMP expression was only observed in SKBR3 cells. Taken together, the findings indicated that CoCl2 can mimic hypoxia in both cell lines, but EMT was triggered in SKBR3 cells more effectively than in HEK293T cells, and invasion was only stimulated in SKBR3 cells. In conclusion, SKBR3 cancer cells can be used as an EMT model to better understand its control and manipulation mechanisms and to investigate new therapeutic targets for the suppression of tumor metastasis.
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Affiliation(s)
- Maryam Sadri
- Immunology Research Center (IRC), Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran AND Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Ali-Akbar Delbandi
- Immunology Research Center (IRC), Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran AND Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Nesa Rashidi
- Immunology Research Center (IRC), Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran AND Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Gholam Ali Kardar
- Immunology, Asthma Allergy Research Institute (IAARI), Tehran University of Medical Sciences, Tehran, Iran AND Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Reza Falak
- Immunology Research Center (IRC), Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran AND Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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16
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Sharma V, Singh TG, Mannan A. Therapeutic implications of glucose transporters (GLUT) in cerebral ischemia. Neurochem Res 2022; 47:2173-2186. [PMID: 35596882 DOI: 10.1007/s11064-022-03620-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 01/05/2023]
Abstract
Cerebral ischemia is a leading cause of death in the globe, with a large societal cost. Deprivation of blood flow, together with consequent glucose and oxygen shortage, activates a variety of pathways that result in permanent brain damage. As a result, ischemia raises energy demand, which is linked to significant alterations in brain energy metabolism. Even at the low glucose levels reported in plasma during ischemia, glucose transport activity may adjust to assure the supply of glucose to maintain normal cellular function. Glucose transporters in the brain are divided into two groups: sodium-independent glucose transporters (GLUTs) and sodium-dependent glucose cotransporters (SGLTs).This review assess the GLUT structure, expression, regulation, pathobiology of GLUT in cerebral ischemia and regulators of GLUT and it also provides the synopsis of the literature exploring the relationship between GLUT and the various downstream signalling pathways for e.g., AMP-activated protein kinase (AMPK), CREB (cAMP response element-binding protein), Hypoxia-inducible factor 1 (HIF)-1, Phosphatidylinositol 3-kinase (PI3-K), Mitogen-activated protein kinase (MAPK) and adenylate-uridylate-rich elements (AREs). Therefore, the aim of the present review was to elaborate the therapeutic implications of GLUT in the cerebral ischemia.
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Affiliation(s)
- Veerta Sharma
- Chitkara College of Pharmacy, Chitkara University, 140401, Patiala, Punjab, India
| | - Thakur Gurjeet Singh
- Chitkara College of Pharmacy, Chitkara University, 140401, Patiala, Punjab, India.
| | - Ashi Mannan
- Chitkara College of Pharmacy, Chitkara University, 140401, Patiala, Punjab, India
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17
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Forte LDM, de Almeida Rodrigues N, Cordeiro AV, de Fante T, de Paula Simino LA, de Souza Torsoni A, Torsoni MA, Gobatto CA, Barros Manchado-Gobatto F. Effect of acute swimming exercise at different intensities but equal total load over metabolic and molecular responses in swimming rats. J Muscle Res Cell Motil 2022. [PMID: 35084659 DOI: 10.1007/s10974-022-09614-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 01/10/2022] [Indexed: 01/08/2023]
Abstract
Acute metabolic and molecular response to exercise may vary according to exercise's intensity and duration. However, there is a lack regarding specific tissue alterations after acute exercise with aerobic or anaerobic predominance. The present study investigated the effects of acute exercise performed at different intensities, but with equal total load on molecular and physiological responses in swimming rats. Sixty male rats were divided into a control group and five groups performing an acute bout of swimming exercise at different intensities (80, 90, 100, 110 and 120% of anaerobic threshold [AnT]). The exercise duration of each group was balanced so all groups performed at the same total load. Gene expression (HIF-1α, PGC-1α, MCT1 and MCT4 mRNA), blood biomarkers and tissue glycogen depletion were analyzed after the exercise session. ANOVA One-Way was used to indicate statistical mean differences considering 5% significance level. Blood lactate concentration was the only biomarker sensitive to acute exercise, with a significant increase in rats exercised above AnT intensities (p < 0.000). Glycogen stores of gluteus muscle were significantly reduced in all exercised animals in comparison to control group (p = 0.02). Hepatic tissue presented significant reduction in glycogen in animals exercised above AnT (p = 0.000, as well as reduced HIF-1α mRNA and increased MCT1 mRNA, especially at the highest intensity (p = 0.002). Physiological parameters did not alter amongst groups for most tissues. Our results indicate the hepatic tissue alterations (glycogen stores and gene expressions) in response to different exercise intensities of exercise, even with the total load matched.
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18
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de Keijzer MJ, de Klerk DJ, de Haan LR, van Kooten RT, Franchi LP, Dias LM, Kleijn TG, van Doorn DJ, Heger M. Inhibition of the HIF-1 Survival Pathway as a Strategy to Augment Photodynamic Therapy Efficacy. Methods Mol Biol 2022; 2451:285-403. [PMID: 35505024 DOI: 10.1007/978-1-0716-2099-1_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photodynamic therapy (PDT) is a non-to-minimally invasive treatment modality that utilizes photoactivatable drugs called photosensitizers to disrupt tumors with locally photoproduced reactive oxygen species (ROS). Photosensitizer activation by light results in hyperoxidative stress and subsequent tumor cell death, vascular shutdown and hypoxia, and an antitumor immune response. However, sublethally afflicted tumor cells initiate several survival mechanisms that account for decreased PDT efficacy. The hypoxia inducible factor 1 (HIF-1) pathway is one of the most effective cell survival pathways that contributes to cell recovery from PDT-induced damage. Several hundred target genes of the HIF-1 heterodimeric complex collectively mediate processes that are involved in tumor cell survival directly and indirectly (e.g., vascularization, glucose metabolism, proliferation, and metastasis). The broad spectrum of biological ramifications culminating from the activation of HIF-1 target genes reflects the importance of HIF-1 in the context of therapeutic recalcitrance. This chapter elaborates on the involvement of HIF-1 in cancer biology, the hypoxic response mechanisms, and the role of HIF-1 in PDT. An overview of inhibitors that either directly or indirectly impede HIF-1-mediated survival signaling is provided. The inhibitors may be used as pharmacological adjuvants in combination with PDT to augment therapeutic efficacy.
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Affiliation(s)
- Mark J de Keijzer
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Daniel J de Klerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Lianne R de Haan
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Robert T van Kooten
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
- Faculty of Philosophy, Sciences, and Letters of Ribeirão Preto, epartment of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group,University of São Paulo, São Paulo, Brazil
| | - Lionel M Dias
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Tony G Kleijn
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Diederick J van Doorn
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Michal Heger
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China.
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands.
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19
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Collin LJ, Maliniak ML, Cronin-Fenton DP, Ahern TP, Christensen KB, Ulrichsen SP, Damkier P, Hamilton-Dutoit S, Yacoub R, Christiansen PM, Sørensen HT, Lash TL. Hypoxia-inducible factor-1α expression and breast cancer recurrence in a Danish population-based case control study. Breast Cancer Res 2021; 23:103. [PMID: 34736510 PMCID: PMC8567651 DOI: 10.1186/s13058-021-01480-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 10/23/2021] [Indexed: 12/27/2022] Open
Abstract
Background Hypoxia-inducible factor-1α (HIF-1α) is a transcription factor that facilitates the adaptation of cancer cells to hypoxic conditions and may be prognostic of breast cancer recurrence. We evaluated the association of HIF-1α expression with breast cancer recurrence, and its association with timing of breast cancer recurrence. Methods In this population-based case-control study, we included women diagnosed with stage I–III breast cancer between 1985 and 2001, aged 35–69 years, registered in the Danish Breast Cancer Group. We identified 541 cases of breast cancer recurrence among women with estrogen receptor (ER)-positive disease who were treated with tamoxifen for at least 1 year (ER+ TAM+). We also enrolled 300 breast cancer recurrence cases among women with ER-negative disease, not treated with tamoxifen, who survived at least 1 year (ER−/TAM−). Controls were recurrence-free breast cancer patients at the time of case diagnosis, matched to recurrence cases on ER/TAM status, date of surgery, menopausal status, cancer stage, and county of residence. Expression of HIF-1α was measured by immunohistochemistry on tissue microarrays. We fitted logistic regression models to compute odds ratios (ORs) and 95% confidence intervals (CIs) associating HIF-1α expression with recurrence, and with timing of recurrence. Results HIF-1α expression was observed in 23% of cases and 20% of controls in the ER+/TAM+ stratum, and in 47% of cases and 48% of controls in the ER−/TAM− stratum. We observed a near-null association between HIF-1α expression in both ER/TAM groups (ER+/TAM+ OR = 1.21, 95%CI 0.88, 1.67 and ER−/TAM− OR = 0.97, 95%CI 0.68, 1.39). HIF-1α expression was not associated with time to recurrence among women in the ER+/TAM+ stratum, but was associated with early recurrence among women in the ER−/TAM− stratum. Conclusion In this study, HIF-1α expression was not associated with breast cancer recurrence overall but may be associated with early recurrence among women diagnosed with ER− breast cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s13058-021-01480-1.
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Affiliation(s)
- Lindsay J Collin
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA. .,Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark. .,Department of Population Health Sciences, Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope Drive, Room 4746, Salt Lake City, UT, 84112, USA.
| | - Maret L Maliniak
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | | | - Thomas P Ahern
- Department of Surgery, The Robert Larner, M.D. College of Medicine, The University of Vermont, Burlington, VT, USA
| | | | - Sinna P Ulrichsen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Per Damkier
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | | | - Rami Yacoub
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Peer M Christiansen
- Department of Plastic and Breast Surgery, Aarhus University Hospital, Aarhus, Denmark.,The Danish Breast Cancer Group, Aarhus, Denmark
| | - Henrik Toft Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Timothy L Lash
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Pan Z, Ma G, Kong L, Du G. Hypoxia-inducible factor-1: Regulatory mechanisms and drug development in stroke. Pharmacol Res 2021; 170:105742. [PMID: 34182129 DOI: 10.1016/j.phrs.2021.105742] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/13/2021] [Accepted: 06/23/2021] [Indexed: 12/14/2022]
Abstract
Stroke is an acute cerebrovascular disease caused by sudden rupture of blood vessels in the brain or blockage of blood vessels, which has now become one of the main causes of adult death. During stroke, hypoxia-inducible factor-1 (HIF-1), as an important regulator under hypoxia conditions, is involved in the pathological process of stroke by regulating multi-pathways, such as glucose metabolism, angiogenesis, erythropoiesis, cell survival. However, the roles of HIF-1 in stroke are still controversial, which are related with ischemic time and degree of ischemia. The regulatory mechanisms of HIF-1 in stroke include inflammation, autophagy, oxidative stress, apoptosis and energy metabolism. The potential drugs targeting HIF-1 have attracted more attention, such as HIF-1 inhibitors, HIF-1 stabilizers and natural products. Based on the role of HIF-1 in stroke, HIF-1 is expected to be a potential target for stroke treatment. Resolving when and what interventions for HIF-1 to take during stroke will provide novel strategies for stroke treatment.
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Affiliation(s)
- Zirong Pan
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Guodong Ma
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Linglei Kong
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China.
| | - Guanhua Du
- Beijing Key Laboratory of Drug Target Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China.
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21
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Kong L, Ma Y, Wang Z, Liu N, Ma G, Liu C, Shi R, Du G. Inhibition of hypoxia inducible factor 1 by YC-1 attenuates tissue plasminogen activator induced hemorrhagic transformation by suppressing HMGB1/TLR4/NF-κB mediated neutrophil infiltration in thromboembolic stroke rats. Int Immunopharmacol 2021; 94:107507. [PMID: 33657523 DOI: 10.1016/j.intimp.2021.107507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/27/2021] [Accepted: 02/11/2021] [Indexed: 12/13/2022]
Abstract
Hemorrhagic transformation (HT) is a frequent complication of ischemic stroke after thrombolytic therapy and seriously affects the prognosis of stroke. Due to the limited therapeutic window and hemorrhagic complications, tissue plasminogen activator (t-PA) is underutilized in acute ischemic stroke. Currently, there are no clinically effective drugs to decrease the incidence of t-PA-induced HT. Hypoxia-inducible factor 1 (HIF-1) is an important transcription factor that maintains oxygen homeostasis and mediates neuroinflammation under hypoxia. However, the effect of HIF-1 on t-PA-induced HT is not clear. The aim of this study was to investigate the role of HIF-1 in t-PA-induced HT by applying YC-1, an inhibitor of HIF-1. In the present study, we found that HIF-1 expression was significantly increased in ischemic brain tissue after delayed t-PA treatment and was mainly localized in neurons and endothelial cells. Inhibition of HIF-1 by YC-1 improved infarct volume and neurological deficits. YC-1 inhibited matrix metalloproteinase protein expression, increased tight junction protein expression, and ameliorated BBB disruption and the occurrence of HT. Furthermore, YC-1 suppressed the release of inflammatory factors, neutrophil infiltration and the activation of the HMGB1/TLR4/NF-κB signaling pathway. These results demonstrated that inhibition of HIF-1 could protect BBB integrity by suppressing HMGB1/TLR4/NF-κB-mediated neutrophil infiltration, thereby reducing the risk of t-PA-induced HT. Thus, HIF-1 may be a potential therapeutic target for t-PA-induced HT.
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Affiliation(s)
- Linglei Kong
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yinzhong Ma
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Zhiyuan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Nannan Liu
- Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Guodong Ma
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Chengdi Liu
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ruili Shi
- Department of Physiology, Baotou Medical College, Baotou 014060, China.
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Shi J, Yu T, Song K, Du S, He S, Hu X, Li X, Li H, Dong S, Zhang Y, Xie Z, Li C, Yu J. Dexmedetomidine ameliorates endotoxin-induced acute lung injury in vivo and in vitro by preserving mitochondrial dynamic equilibrium through the HIF-1a/HO-1 signaling pathway. Redox Biol 2021; 41:101954. [PMID: 33774474 PMCID: PMC8027777 DOI: 10.1016/j.redox.2021.101954] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 03/08/2021] [Accepted: 03/15/2021] [Indexed: 02/06/2023] Open
Abstract
Increasing lines of evidence identified that dexmedetomidine (DEX) exerted protective effects against sepsis-stimulated acute lung injury via anti-inflammation, anti-oxidation and anti-apoptosis. However, the mechanisms remain unclear. Herein, we investigated whether DEX afforded lung protection by regulating the process of mitochondrial dynamics through the HIF-1a/HO-1 pathway in vivo and in vitro. Using C57BL/6J mice exposed to lipopolysaccharide, it was initially observed that preemptive administration of DEX (50μg/kg) alleviated lung pathologic injury, reduced oxidative stress indices (OSI), improved mitochondrial dysfunction, upregulated the expression of HIF-1α and HO-1, accompanied by shifting the dynamic course of mitochondria into fusion. Moreover, HO-1-knockout mice or HO-1 siRNA transfected NR8383 cells were pretreated with HIF-1α stabilizer DMOG and DEX to validate the effect of HIF-1a/HO-1 pathway on DEX-mediated mitochondrial dynamics in a model of endotoxin-induced lung injury. We found that pretreatment with DEX and DMOG distinctly relieved lung injury, decreased the levels of mitochondrial ROS and mtDNA, reduced OSI, increased nuclear accumulation of HIF-1a and HO-1 protein in wild type mice but not HO-1 KO mice. Similar observations were recapitulated in NC siRNA transfected NR8383 cells after LPS stimulation but not HO-1 siRNA transfected cells. Concertedly, DEX reversed the impaired mitochondrial morphology in LPS stimulated-wild type mice or NC siRNA transfected NR8383 cells, upregulated the expression of mitochondrial fusion protein, while downregulated the expression of fission protein in HIF-1a/HO-1 dependent pathway. Altogether, our data both in vivo and in vitro certified that DEX treatment ameliorated endotoxin-induced acute lung injury by preserving the dynamic equilibrium of mitochondrial fusion/fission through the regulation of HIF-1a/HO-1 signaling pathway.
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Affiliation(s)
- Jia Shi
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Tianxi Yu
- Department of Sanitary Inspection and Quarantine, Kunming Medical University, YunNan, China
| | - Kai Song
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Shihan Du
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Simeng He
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Nankai University, Tianjin, China
| | - Xinxin Hu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Xiangyun Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Haibo Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Shuan Dong
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Yuan Zhang
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Zilei Xie
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Cui Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Jianbo Yu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China.
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Li X, Yang L, Wang Q, Tao J, Pan Z, Wang S. Soft tissue sarcomas: IVIM and DKI correlate with the expression of HIF-1α on direct comparison of MRI and pathological slices. Eur Radiol 2021; 31:4669-79. [PMID: 33416975 DOI: 10.1007/s00330-020-07526-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 10/21/2020] [Accepted: 11/16/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To investigate the correlation of intravoxel incoherent motion (IVIM) and diffusion kurtosis imaging (DKI) parameters with the expression of HIF-1α in soft tissue sarcoma (STS). METHODS This prospective study was approved by the institutional ethics committee. Written informed consent was obtained from all patients. Forty patients with STS who underwent 3.0 T MRI, including IVIM and DKI, were included in the study. Standard apparent diffusion coefficient (ADC), true ADC (Dslow), pseudo ADC (Dfast), perfusion fraction (f), mean kurtosis (MK), and mean diffusivity (MD) of each lesion were independently analyzed by two observers. An MRI-pathology control method was used to ensure correspondence between the MRI slices and the pathological sections. Spearman analysis, independent sample t test, Mann-Whitney U test, chi-squared test, and receiver operating characteristic (ROC) curve analysis were performed. RESULTS Dslow and MD values showed a negative correlation with HIF-1α expression (r = - 0.469, - 0.588). MK and f values showed a positive correlation with HIF-1α expression (r = 0.779, 0.572). Dslow, MD, MK, and f values showed significant differences between the high- and low-expression groups. The MK value showed the best diagnostic ability. The optimal cut-off MK value of 0.604 was associated with 78.3% sensitivity and 88.2% specificity (area under the curve, 0.867). CONCLUSIONS This preliminary study demonstrated the association of IVIM and DKI parameters with the expression of HIF-1α in STS. KEY POINTS • IVIM and DKI parameters are correlated with the expression of HIF-1α in STS. • The MRI-pathology control method can be used in clinical studies to ensure correspondence between MRI slices and pathology sections.
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Abstract
Diabetic kidney disease (DKD) is the major cause of end-stage kidney disease. However, only renin-angiotensin system inhibitor with multidisciplinary treatments is effective for DKD. In 2019, sodium-glucose cotransporter 2 (SGLT2) inhibitor showed efficacy against DKD in Canagliflozin and Renal Events in Diabetes with Established Nephropathy Clinical Evaluation (CREDENCE) trial, adding a new treatment option. However, the progression of DKD has not been completely controlled. The patients with transient exposure to hyperglycemia develop diabetic complications, including DKD, even after normalization of their blood glucose. Temporary hyperglycemia causes advanced glycation end product (AGE) accumulations and epigenetic changes as metabolic memory. The drugs that improve metabolic memory are awaited, and AGE inhibitors and histone modification inhibitors are the focus of clinical and basic research. In addition, incretin-related drugs showed a renoprotective ability in many clinical trials, and these trials with renal outcome as their primary endpoint are currently ongoing. Hypoxia-inducible factor prolyl hydroxylase inhibitors recently approved for renal anemia may be renoprotective since they improve tubulointerstitial hypoxia. Furthermore, NF-E2-related factor 2 activators improved the glomerular filtration rate of DKD patients in Bardoxolone Methyl Treatment: Renal Function in chronic kidney disease/Type 2 Diabetes (BEAM) trial and Phase II Study of Bardoxolone Methyl in Patients with Chronic Kidney Disease and Type 2 Diabetes (TSUBAKI) trial. Thus, following SGLT2 inhibitor, numerous novel drugs could be utilized in treating DKD. Future studies are expected to provide new insights.
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Affiliation(s)
- Tomotaka Yamazaki
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Imari Mimura
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
| | - Tetsuhiro Tanaka
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
- Corresponding author: Tetsuhiro Tanaka https://orcid.org/0000-0002-2238-4215 Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan E-mail:
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
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Est-Witte SE, Farris AL, Tzeng SY, Hutton DL, Gong DH, Calabresi KG, Grayson WL, Green JJ. Non-viral gene delivery of HIF-1α promotes angiogenesis in human adipose-derived stem cells. Acta Biomater 2020; 113:279-288. [PMID: 32623098 PMCID: PMC8035702 DOI: 10.1016/j.actbio.2020.06.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/05/2020] [Accepted: 06/26/2020] [Indexed: 02/07/2023]
Abstract
Stable and mature vascular formation is a current challenge in engineering functional tissues. Transient, non-viral gene delivery presents a unique platform for delivering genetic information to cells for tissue engineering purposes and to restore blood flow to ischemic tissue. The formation of new blood vessels can be induced by upregulation of hypoxia-inducible factor-1α (HIF-1), among other factors. We hypothesized that biodegradable polymers could be used to efficiently deliver the HIF-1α gene to human adipose-derived stromal/stem cells (hASCs) and that this treatment could recruit an existing endogenous endothelial cell population to induce angiogenesis in a 3D cell construct in vitro. In this study, end-modified poly(β-amino ester) (PBAE) nanocomplexes were first optimized for transfection of hASCs and a new biodegradable polymer with increased hydrophobicity and secondary amine structures, N'-(3-aminopropyl)-N,N-dimethylpropane-1,3-diamine end-modified poly(1,4-butanediol diacrylate-co-4-amino-1-butanol), was found to be most effective. Optimal PBAE nanocomplexes had a hydrodynamic diameter of approximately 140 nm and had a zeta potential of 30 mV. The PBAE polymer self-assembled with HIF-1α plasmid DNA and treatment of hASCs with these nanocomplexes induced 3D vascularization. Cells transfected with this polymer-DNA complex were found to have 106-fold upregulation HIF-1α expression, an approximately 2-fold increase in secreted VEGF, and caused the formation of vessel tubules compared to an untransfected control. These gene therapy biomaterials may be useful for regenerative medicine. STATEMENT OF SIGNIFICANCE: Not only is the formation of stable vasculature a challenge for engineering human tissues in vitro, but it is also of valuable interest to clinical applications such as peripheral artery disease. Previous studies using HIF-1α to induce vascular formation have been limited by the necessity of hypoxic chambers. It would be advantageous to simulate endogenous responses to hypoxia without the need for physical hypoxia. In this study, 3D vascular formation was shown to be inducible through non-viral gene delivery of HIF-1α with new polymeric nanocomplexes. A biodegradable polymer N'-(3-aminopropyl)-N,N-dimethylpropane-1,3-diamine end-modified poly(1,4-butanediol diacrylate-co-4-amino-1-butanol) demonstrates improved transfection of human adipose-derived stem cells. This nanobiotechnology could be a promising strategy for the creation of vasculature for tissue engineering and clinical applications.
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Affiliation(s)
- Savannah E Est-Witte
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Ashley L Farris
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Stephany Y Tzeng
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Daphne L Hutton
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Dennis H Gong
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Kaitlyn G Calabresi
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
| | - Warren L Grayson
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21231, USA.
| | - Jordan J Green
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Institute for Nanobiotechnology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21231, USA; Department of Oncology and Bloomberg~Kimmel Immunotherapy Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.
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Deng F, Chen D, Wei X, Lu S, Luo X, He J, Liu J, Meng T, Yang A, Chen H. Development and validation of a prognostic classifier based on HIF-1 signaling for hepatocellular carcinoma. Aging (Albany NY) 2020; 12:3431-3450. [PMID: 32084009 PMCID: PMC7066907 DOI: 10.18632/aging.102820] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/27/2020] [Indexed: 12/11/2022]
Abstract
HIF-1 (hypoxia-inducible factor 1) signaling played a vital role in HCC (hepatocellular carcinoma) prognosis. We aimed to establish an accurate risk scoring system for HCC prognosis prediction and treatment guidance. 424 samples from TCGA (The Cancer Genome Atlas) and 445 samples from GSE14520 dataset were included as the derivation and validation cohort, respectively. In the derivation cohort, prognostic relevant signatures were selected from sixteen HIF-1 related genes and LASSO regression was adopted for model construction. Tumor-infiltrating immune cells were calculated using CIBERSORT algorithm. HIF-1 signaling significantly increased in HCC samples compared with normal tissues. Scoring system based on SLC2A1, ENO1, LDHA and GAPDH exhibited a continuous predictive ability for OS (overall survival) in HCC patients. PCA and t-SNE analysis confirmed a reliable clustering ability of risk score in both cohorts. Patients were classified into high-risk and low-risk groups and the survival outcomes between the two groups showed significant differences. In the derivation cohort, Cox regression indicated the scoring system was an independent predictor for OS, which was validated in the validation cohort. Different infiltrating immune cells fraction and immune scores were also observed in different groups. Herein, a novel integrated scoring system was developed based on HIF-1 related genes, which would be conducive to the precise treatment of patients.
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Affiliation(s)
- Feiwen Deng
- Department of Liver and Pancreatic Surgery, The Affiliated Foshan Hospital, Sun Yat-Sen University, Foshan 528000, China
| | - Dong Chen
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Xiaoli Wei
- Department of Medical Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Shilin Lu
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510008, China
| | - Xuan Luo
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Jincan He
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510008, China
| | - Junting Liu
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510008, China
| | - Tiebao Meng
- Department of Medical Imaging, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Anli Yang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Huanwei Chen
- Department of Liver and Pancreatic Surgery, The Affiliated Foshan Hospital, Sun Yat-Sen University, Foshan 528000, China
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Makanyengo SO, Carroll GM, Goggins BJ, Smith SR, Pockney PG, Keely S. Systematic Review on the Influence of Tissue Oxygenation on Gut Microbiota and Anastomotic Healing. J Surg Res 2020; 249:186-196. [PMID: 31986361 DOI: 10.1016/j.jss.2019.12.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/04/2019] [Accepted: 12/06/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Anastomotic leak rates have not improved over several decades despite improvements in surgical techniques and patient care. The gut microbiome has been implicated in the development of leaks. The exact mechanisms by which tissue oxygenation affects gut microbial composition and anastomotic healing physiology are unclear. Also, commonly used carbon dioxide (CO2) is a known vasodilator that improves tissue oxygen tension. We performed a systematic review to determine the influence of hyperoxia, hypoxia, and hypercapnia on the gut microbiome and anastomotic healing. METHODS A literature search was performed in MEDLINE, EMBASE, and COCHRANE to identify studies investigating the effects of hyperoxia, hypoxia, and hypercapnia on anastomotic healing and gut microbiota published between 1998 and 2018. Two reviewers screened the articles for eligibility and quality. Fifty-three articles underwent full text review, and a narrative synthesis was undertaken. RESULTS Hyperoxia is associated with better anastomotic healing, increased gastrointestinal oxygen tension, and may reduce gut anaerobes. Hypoxia is associated with poor healing and increased gut anaerobes. However, it is unclear if hypoxia is the most important predictor of anastomotic leaks. Low pressure CO2 pneumoperitoneum and mild systemic hypercapnia are both associated with increased gastrointestinal oxygen tension and may improve anastomotic healing. We found no studies which investigated the effect of hypercapnia on gut microbiota in the context of anastomotic healing. CONCLUSIONS Tissue oxygenation influences gut anastomotic healing, but little evidence exists to demonstrate the influence on the gut microbiome in the context of healing. Further studies are needed to determine if anastomotic microbiome changes with altered tissue oxygenation and if this affects healing and leak rates. If confirmed, altering tissue oxygenation through hyperoxia or hypercapnia could be feasible means of altering the microbiome such that anastomotic leak rates reduce.
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Affiliation(s)
- Samwel O Makanyengo
- Department of Surgery, John Hunter Hospital, New Lambton Heights, New South Wales, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; Hunter Medical Research Institute, New Lambton Heights, Australia.
| | - Georgia M Carroll
- Department of Surgery, John Hunter Hospital, New Lambton Heights, New South Wales, Australia; School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Bridie J Goggins
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; Hunter Medical Research Institute, New Lambton Heights, Australia
| | - Stephen R Smith
- Department of Surgery, John Hunter Hospital, New Lambton Heights, New South Wales, Australia; School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Peter G Pockney
- Department of Surgery, John Hunter Hospital, New Lambton Heights, New South Wales, Australia; School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Simon Keely
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
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Meng C, Sun Y, Hu Z, Wang H, Jiang W, Song J, Yu Y, Hu D. Effects of hypoxia inducible factor-1α on expression levels of MLCK, p-MLC and ZO-1 of rat endothelial cells. Biochem Biophys Res Commun 2019; 519:591-596. [PMID: 31540688 DOI: 10.1016/j.bbrc.2019.08.159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 08/30/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To examine the aberrant expression of endothelial permeability associated proteins including MLCK, p-MLC and ZO-1 in presence of different levels of hypoxia-inducible factor 1 alpha (HIF-1α). METHODS We established monolayer vascular endothelial cell model with the primary rat endothelial cells. Over-expressed or under-expressed HIF-1α cell lines were made by endothelial cells transfected with plasmid vector constructed with HIF-1α gene or HIF-1α-specific short hairpin RNA (shRNA). Levels of mRNA and protein of MLCK, p-MLC and ZO-1 were determined using Real-Time PCR and Western blot. All data were analyzed using by One-Way ANOVA method and LSD. RESULTS We successfully cultured the rat endothelial primary cells for four days. The mRNA and protein levels of MLCK and p-MLC were significantly increased in the HIF-1α over-expression group than that in the blank control group and the empty plasmid GV230 group (P<0.05). ZO-1 was significantly lower in the HIF-1α over-expression group than that in the blank control group and the GV230 group. On the contrary, the mRNA and protein levels of MLCK and p-MLC were significantly lower in the HIF-1α under-expression group than that in the blank control group and the shRNA-NC group (P<0.05). ZO-1 was significantly higher in the HIF-1α low-expression group than that in the blank control group and the shRNA-NC group. CONCLUSION HIF-1α positively regulates the expression of MLCK and p-MLC and negatively regulates the expression of ZO-1 in rat monolayer endothelial cells.
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Affiliation(s)
- Chengying Meng
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Youjun Sun
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Zijian Hu
- 2018 Class of Clinical Medicine (No.1813010207), The First Clinical College of Anhui Medical University, Hefei, 230022, China
| | - Huan Wang
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Wei Jiang
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Junhui Song
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Youxin Yu
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Delin Hu
- Department of Burn, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
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Thiele RH, Osuru HP, Paila U, Ikeda K, Zuo Z. Impact of inflammation on brain subcellular energetics in anesthetized rats. BMC Neurosci 2019; 20:34. [PMID: 31307382 PMCID: PMC6631861 DOI: 10.1186/s12868-019-0514-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023] Open
Abstract
Background Emerging data suggests that volatile anesthetic agents may have organ protection properties in the setting of critical illness. The purpose of this study was to better understand the effect of inflammation on cerebral subcellular energetics in animals exposed to two different anesthetic agents—a GABA agonist (propofol) and a volatile agent (isoflurane). Results Forty-eight Sprague–Dawley rats were anesthetized with isoflurane or propofol. In each group, rats were randomized to celiotomy and closure (sham) or cecal ligation and puncture (inflammation [sepsis model]) for 8 h. Brain tissue oxygen saturation and the oxidation state of cytochrome aa3 were measured. Brain tissue was extracted using the freeze-blow technique. All rats experienced progressive increases in tissue oxygenation and cytochrome aa3 reduction over time. Inflammation had no impact on cytochrome aa3, but isoflurane caused significant cytochrome aa3 reduction. During isoflurane (not propofol) anesthesia, inflammation led to an increase in lactate (+ 0.64 vs. − 0.80 mEq/L, p = 0.0061). There were no differences in ADP:ATP ratios between groups. In the isoflurane (not propofol) group, inflammation increased the expression of hypoxia-inducible factor-1α (62%, p = 0.0012), heme oxygenase-1 (67%, p = 0.0011), and inducible nitric oxide synthase (31%, p = 0.023) in the brain. Animals exposed to inflammation and isoflurane (but not propofol) exhibited increased expression of protein carbonyls (9.2 vs. 7.0 nM/mg protein, p = 0.0050) and S-nitrosylation (49%, p = 0.045) in the brain. RNA sequencing identified an increase in heat shock protein 90 and NF-κβ inhibitor mRNA in the inflammation/isoflurane group. Conclusions In the setting of inflammation, rats exposed to isoflurane show increased hypoxia-inducible factor-1α expression despite a lack of hypoxia, increased oxidative stress in the brain, and increased serum lactate, all of which suggest a relative increase in anaerobic metabolism compared to propofol. Differences in oxidative stress as well as heat shock protein 90 and NF-κβ inhibitor may account for the differential expression of cerebral hypoxia-inducible factor-1α during inflammation. Electronic supplementary material The online version of this article (10.1186/s12868-019-0514-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Robert H Thiele
- Department of Anesthesiology, University of Virginia School of Medicine, P.O. Box 800710, Charlottesville, VA, 22908-0710, USA.
| | - Hari P Osuru
- Department of Anesthesiology, University of Virginia School of Medicine, P.O. Box 800710, Charlottesville, VA, 22908-0710, USA
| | - Umadevi Paila
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, USA
| | - Keita Ikeda
- Department of Anesthesiology, University of Virginia School of Medicine, P.O. Box 800710, Charlottesville, VA, 22908-0710, USA
| | - Zhiyi Zuo
- Department of Anesthesiology, University of Virginia School of Medicine, P.O. Box 800710, Charlottesville, VA, 22908-0710, USA
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Wei PC, Tong L, Li R. [Effect of RORC inhibitor on HIF-1α and VEGF in nasal mucosa of allergic rhinitis of mice]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 53:751-756. [PMID: 30347534 DOI: 10.3760/cma.j.issn.1673-0860.2018.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of the retinoic acid receptor related orphan C (RORC) inhibitor (SR1001) on the expression changes of proteins of hypoxia induced factor (HIF-1α) and vascular endothelial growth factor (VEGF) in the nasal mucosa of mice with allergic rhinitis (AR) model. Methods: Thirty BALB/c were randomly divided into normal group, AR model group and RORC inhibitor group, 10 mice each group. AR model of mice was established by ovalbumin (OVA) sensitization method. RORC inhibitor group was given intraperitoneal injection of SR1001 (25 mg/kg), while AR model group intraperitoneal injection of the same volume of 0.9% normal saline. The symptom score of the mice was determined every weekend after administration. The pathological morphological changes in the nasal mucosa tissue obtained from anesthetized mice were observed by light microscope. The expression of HIF-1α and VEGF protein were detected by immunohistochemistry. IFN-γ, IL-17, and sIgE in the serum were detected by ELISA and the expression of HIF-1α and VEGF in the nasal mucosal tissue of the mice were measured by Western blot. One-way ANOVA was used for inter-group comparison. LSD method was used for inter-group comparison with equal variance, and Dunnett T3 method for inter-group comparison with unequal variance. P<0.05 was considered statistically significant. Results: The AR model was successfully established. Compared with the model group, the RORC inhibitor group significantly reduced the symptom score of AR mice (4.02±0.97 vs 8.50±1.76, t=7.050, P<0.01). The damaged mucosal epithelium appeared to be improved, the glands and dilated ducts tended to be normal, the mast goblet cells significantly reduced, and the infiltration of inflammatory cells in the inherent mucosa reduced. Meanwhile, the content of IL-17 and sIgE in serum decreased [(25.10±4.11) ng/ml vs (42.56±5.98) ng/ml, (0.875±0.244) ng/ml vs (1.982±0.365) ng/ml, t value was 14.141, 10.275, respectively, all P<0.01] and the content of IFN-γ increased [(61.32±8.83) pg/ml vs (38.94±5.97) pg/ml, t=8.133, P<0.01]. The expression of HIF-1α and VEGF protein in the nasal mucosal tissues of AR mice significantly reduced (0.92±0.08 vs 1.67±0.31, 1.12±0.21 vs 2.54±0.46, t value was 7.408, 8.880, respectively, all P<0.01). Conclusion: The RORC inhibitor has the therapeutic effect on AR by changing the content of inflammatory factors in AR mice and reducing the expression level of HIF-1α and VEGF in the nasal mucosa.
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Affiliation(s)
- P C Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Anhui No.2 Provincial People's Hospital, Hefei 230031, China
| | - L Tong
- Institute of Preventive Medicine, Anhui Academy of Medical Sciences, Hefei 230061, China
| | - R Li
- Institute of Pharmacological Toxicology, Anhui Academy of Medical Sciences, Hefei 230061, China
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Whitehouse LM, Manzon RG. Hypoxia alters the expression of hif-1a mRNA and downstream HIF-1 response genes in embryonic and larval lake whitefish (Coregonus clupeaformis). Comp Biochem Physiol A Mol Integr Physiol 2019; 230:81-90. [PMID: 30659950 DOI: 10.1016/j.cbpa.2019.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/27/2018] [Accepted: 01/06/2019] [Indexed: 12/12/2022]
Abstract
Lake whitefish (Coregonus clupeaformis) embryos and larvae were exposed to hypoxia at different developmental ages to determine when the cellular response to hypoxia could be initiated. mRNA levels of hypoxia-inducible factor 1α (hif-1α), hsp70, and several HIF-1 target genes were quantified in embryos at 21, 38, 63, 83- and 103-days post fertilisation (dpf) and in larvae at 1, 2, 3- and 4-weeks post hatch (wph) following a 6-hour hypoxia exposure. hsp70 mRNA levels were increased in response to hypoxia at all embryonic ages. By comparison, the first observed change in hif-1α mRNA in response to hypoxia was at 38 dpf, where it was down-regulated from high basal levels, with this response persisting through to 83 dpf. Interestingly, this decrease in hif-1α mRNA coincided with increases in the mRNA levels of the HIF-1 target genes: vegfa (vascular endothelial growth factor A), igfbp1 (insulin-like growth factor binding protein 1), ldha (lactate dehydrogenase a), gapdh (glyceraldehyde-3-phosphate dehydrogenase) and epo (erythropoietin) at select ages. Collectively, this suggests a possible HIF-1-mediated response to hypoxia despite a decrease in hif-1α mRNA. Coinciding with a decrease in basal levels, increases in hif-1α were measured in response to hypoxia at 103 dpf and in larval fish at 1, 2 and 3 wph but there were no consistent increases in HIF-1 target genes at these ages. Overall, our findings indicate that lake whitefish can mount a response to hypoxia early in embryogenesis which may mitigate some of the damaging effects of exposure to low oxygen levels at these critical life history stages.
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Affiliation(s)
- Lindy M Whitehouse
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
| | - Richard G Manzon
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada.
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Radhakrishnan R, Ha JH, Jayaraman M, Liu J, Moxley KM, Isidoro C, Sood AK, Song YS, Dhanasekaran DN. Ovarian cancer cell-derived lysophosphatidic acid induces glycolytic shift and cancer-associated fibroblast-phenotype in normal and peritumoral fibroblasts. Cancer Lett 2018; 442:464-474. [PMID: 30503552 DOI: 10.1016/j.canlet.2018.11.023] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/16/2018] [Accepted: 11/21/2018] [Indexed: 12/12/2022]
Abstract
Cancer-associated fibroblasts (CAFs) play a critical role in cancer progression, metastasis, and therapy resistance. Molecular events that confer CAF-phenotype to predecessor-cells are not fully understood. We demonstrate here that the ovarian cancer cell-conditioned medium (OCC-CM) induces CAF-phenotype in MRC5 lung-fibroblasts and it can be mimicked by LPA. While OCC-CM and LPA stimulated the expression of cellular CAF-markers by 3-days, they induced aerobic glycolysis, a metabolic marker for CAF, by 6 hrs. OCC-CM/LPA-induced glycolysis in lung (MRC5) as well as ovarian fibroblasts (NOF151) was inhibited by the LPA-receptor antagonist, Ki16425. Ovarian cancer patient-derived ascitic fluid-induced aerobic glycolysis in both NFs and Ovarian CAFs and it was inhibited by Ki16425. Further analysis indicated that LPA upregulated HIF1α-levels and the silencing of HIF1α attenuated LPA-induced glycolysis in both NOFs and CAFs. These results establish LPA-induced glycolytic-shift as the earliest, potentially priming event, in NF to CAF-transition. These findings also identify a role for LPA-LPAR-HIF1α signaling-hub in the maintenance of the glycolytic-phenotype in CAFs. Our results provide evidence that targeted inhibition of LPA-mediated metabolic reprogramming in CAFs may represent an adjuvant therapy in ovarian cancer.
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Affiliation(s)
| | - Ji Hee Ha
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; Department of Cell Biology, The University of Oklahoma Health Sciences Center, USA
| | - Muralidharan Jayaraman
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; Department of Cell Biology, The University of Oklahoma Health Sciences Center, USA
| | - Jinsong Liu
- Department of Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, 77030, USA
| | - Katherine M Moxley
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; Department of Obstetrics & Gynecology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Ciro Isidoro
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Anil K Sood
- Department of Gynecologic Oncology & Reproductive Medicine, and the Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Yong Sang Song
- Cancer Research Institute, Seoul National University, College of Medicine, Seoul, 151-921, South Korea
| | - Danny N Dhanasekaran
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA; Department of Cell Biology, The University of Oklahoma Health Sciences Center, USA.
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Dai XY, Chen C, Wang DP, Zhang AH, Liu QZ. [Hypoxia-inducible factor-1α is involved in arsenite-induced epithelial-mesenchymal transition and malignant transformation of human liver epithelial cells via regulating Snail]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:988-993. [PMID: 30392315 DOI: 10.3760/cma.j.issn.0253-9624.2018.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the role of hypoxia-inducible factor-1α (HIF-1α) in arsenite-induced epithelial-mesenchymal transition (EMT) and malignant transformation of human liver epithelial cells (L-02 cells). Methods: After the L-02 cells were chronic treated with 2.0 μmol/L NaAsO(2) for 0 (reference), 10, 20, or 30 passages, con siRNA or HIF-1α siRNA was transfected into arsenite-transformed L-02 (T-L-02) cells by lipofectamine(TM)2000 and were set as T-L-02+con siRNA group and T-L-02+HIF-1α siRNA group as well as L-02 group and T-L-02 group, EMT index and levels of HIF-1α were detected by western blots. The reporter assays were performed to determine if HIF-1α directly regulate Snail transcriptional activity, and soft agar colony formation and Transwell assay were used to detect the malignancy, invasion, and migration ability of cells. Results: When L-02 cells were treated for 10 generations with 2 μmol/L NaAsO(2), relative expressions of E-cadherin were gradually increased compared to control cells, while the levels of N-cadherin, Snail, and HIF-1α were gradually increased in the L-02 cells compared to control cells, showing the longer the treatment time was, the more obvious the change was (P<0.05) . Down regulating the level of HIF-1α by siNRA caused E-cadherin levels to rise compared to T-L-02 group, while the levels of N-cadherin and Snail fall back compared to T-L-02 group (P<0.05) . Double luciferase reporter gene assays showed that HIF-1α directly targeted Snail to regulate its expression. Soft agar colony formation and Transwell assays showed that the numbers of formed colonies, invasion cells, and metastasis cells of cells in T-L-02 group were all lower than those in L-02 group (P<0.05) . Conclusion: HIF-1α is involved in arsenite-induced EMT and malignant transformation of human liver epithelial cells via regulating Snail.
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Affiliation(s)
- X Y Dai
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Peng J, Wang X, Ran L, Song J, Luo R, Wang Y. Hypoxia-Inducible Factor 1α Regulates the Transforming Growth Factor β1/SMAD Family Member 3 Pathway to Promote Breast Cancer Progression. J Breast Cancer 2018. [PMID: 30275854 DOI: 10.4048/jbc.2018.21.e42.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Purpose The transforming growth factor β1 (TGF-β1)/SMAD family member 3 (SMAD3) pathway, and hypoxia-inducible factor 1α (HIF-1α) are two key players in various types of malignancies including breast cancer. The TGF-β1/SMAD3 pathway can interact with HIF-1α in some diseases; however, their interaction in breast cancer is still unknown. Therefore, our study aimed to investigate the interactions between the TGF-β1/SMAD3 pathway and HIF-1α in breast cancer. Methods Expression of HIF-1α in serum of breast cancer patients and healthy controls was detected by quantitative reverse transcription polymerase chain reaction, and the diagnostic value of HIF-1α for breast cancer was evaluated by receiver operating characteristic curve analysis. Breast cancer cell lines overexpressing SMAD3 and HIF-1α were established. Cell apoptosis and proliferation following different treatments were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, and cell counting kit-8, respectively. Expression of related proteins was detected by western blot. Results Serum levels of HIF-1α were higher in breast cancer patients than in normal controls. Both SMAD3 and HIF-1α overexpression inhibited cell apoptosis and promoted cell proliferation. Treatment with inhibitors of HIF-1α and SMAD3 promoted apoptosis in breast cancer cells and inhibited their proliferation. Overexpression of HIF-1α promoted the expression of TGF-β1 and SMAD3, while SMAD3 overexpression did not significantly affect expression of HIF-1α or TGF-β1. Conclusion HIF-1α serves as an upstream regulator of the TGF-β1/SMAD3 pathway and promotes the growth of breast cancer.
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Affiliation(s)
- Jianheng Peng
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaolin Wang
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liang Ran
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junlong Song
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Rong Luo
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yonghong Wang
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Peng J, Wang X, Ran L, Song J, Luo R, Wang Y. Hypoxia-Inducible Factor 1α Regulates the Transforming Growth Factor β1/SMAD Family Member 3 Pathway to Promote Breast Cancer Progression. J Breast Cancer 2018; 21:259-266. [PMID: 30275854 PMCID: PMC6158164 DOI: 10.4048/jbc.2018.21.e42] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 06/28/2018] [Indexed: 12/24/2022] Open
Abstract
Purpose The transforming growth factor β1 (TGF-β1)/SMAD family member 3 (SMAD3) pathway, and hypoxia-inducible factor 1α (HIF-1α) are two key players in various types of malignancies including breast cancer. The TGF-β1/SMAD3 pathway can interact with HIF-1α in some diseases; however, their interaction in breast cancer is still unknown. Therefore, our study aimed to investigate the interactions between the TGF-β1/SMAD3 pathway and HIF-1α in breast cancer. Methods Expression of HIF-1α in serum of breast cancer patients and healthy controls was detected by quantitative reverse transcription polymerase chain reaction, and the diagnostic value of HIF-1α for breast cancer was evaluated by receiver operating characteristic curve analysis. Breast cancer cell lines overexpressing SMAD3 and HIF-1α were established. Cell apoptosis and proliferation following different treatments were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, and cell counting kit-8, respectively. Expression of related proteins was detected by western blot. Results Serum levels of HIF-1α were higher in breast cancer patients than in normal controls. Both SMAD3 and HIF-1α overexpression inhibited cell apoptosis and promoted cell proliferation. Treatment with inhibitors of HIF-1α and SMAD3 promoted apoptosis in breast cancer cells and inhibited their proliferation. Overexpression of HIF-1α promoted the expression of TGF-β1 and SMAD3, while SMAD3 overexpression did not significantly affect expression of HIF-1α or TGF-β1. Conclusion HIF-1α serves as an upstream regulator of the TGF-β1/SMAD3 pathway and promotes the growth of breast cancer.
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Affiliation(s)
- Jianheng Peng
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaolin Wang
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liang Ran
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junlong Song
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Rong Luo
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yonghong Wang
- Department of Physical Examination, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Zheng J, Zhang M, Weng H. Induction of the mitochondrial NDUFA4L2 protein by HIF-1a regulates heart regeneration by promoting the survival of cardiac stem cell. Biochem Biophys Res Commun 2018; 503:2226-33. [PMID: 29953852 DOI: 10.1016/j.bbrc.2018.06.142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 06/25/2018] [Indexed: 12/11/2022]
Abstract
The adult mammalian heart doesn't regenerate after cardiomyocyte injury, which was mainly caused by the severe and persistent effects of cardiomyopathy. Recently, some studies reported that the mammalian heart can regenerate under low oxygen environment. However, the mechanism that the mammalian heart can regenerate remains unknown. Here, we used cardiac stem cells (CSCs) to be planted in serum-free medium under hypoxia environment to understand the mechanism of HIF1α/NDUFA4L2 in the regulation of hypoxia-alleviated apoptosis. Our results revealed that hypoxia can alleviated CSCs apoptosis. Hypoxia inhibited the level of cleaved-caspase3 and stimulated the expression of stabilized HIF-1α. DMOG promotes the survival of CSCs and the protein expression of NDUFA4L2. 2-ME repressed the survival of CSCs and the protein expression of NDUFA4L2. CHIP assay showed that HIF-1α regulated the survival of CSCs by augmenting the combination of HIF-1α and NDUFA4L2's HRE. Knockdown of NDUFA4L2 reversed the role of hypoxia in the survival of CSCs. Taken together, hypoxia promotes the viability of CSCs in serum-free medium by HIF-1α/NDUFA4L2 signaling pathway.
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Xu ZD, Li HS, Wang S, He WF, Wu J, Luo GX. [Effects of hypoxia inducible factor-1α on P311 and its influence on the migration of murine epidermal stem cells]. Zhonghua Shao Shang Za Zhi 2017; 33:287-94. [PMID: 28651420 DOI: 10.3760/cma.j.issn.1009-2587.2017.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register]
Abstract
Objective: To explore the effects of hypoxia inducible factor-1α (HIF-1α) on P311 and its influence on the migration of murine epidermal stem cells (ESCs) under hypoxia in vitro. Methods: Two kinds of murine ESCs were isolated and obtained from 15 neonatal wild-type C57BL/6J mice and 5 congeneric source P311 gene knock-out mice, respectively. The first passage of cells were used in the following experiments after morphologic observation and detection of expression of cell surface markers CD71 and CD49f with flow cytometer. (1) After cell scratch assay, according to the random number table (the same dividing method below), ESCs of P311 gene knock-out mice were divided into normoxia group (cells were cultured with complete medium in normoxic carbon dioxide incubator, and the subsequent normoxic treatments were the same) and hypoxia group (cells were cultured in hypoxic carbon dioxide incubator containing 1% oxygen, and the subsequent hypoxic treatments were the same), with 12 inserts in each group. ESCs of wild-type mice were divided into normoxia group, pure hypoxia group, dimethyl sulfoxide (DMSO) control group (2 μL DMSO solvent was added for 1 h of normoxia treatment before hypoxia treatment), HIF-1α inhibitor group (cells were treated with 11 μmol/L HIF-1 inhibitor of 2 μL under normoxia condition for 1 h before hypoxia treatment), HIF-1α stabilizer group (the cells were treated with 2 μmol/L FG-4592 of 2 μL under normoxia condition for 1 h before hypoxia treatment), with 12 inserts in each group. Three inserts of each time point in each group were adopted respectively to measure the residual width of scratch under inverted phase contrast microscope at post scratch hour (PSH) 0 (immediately), 12, 24, and 48. (2) After hypoxia treatment, the protein level of HIF-1α in ESCs of wild-type mice was detected by Western blotting at post hypoxia hour (PHH) 0, 12, 24, and 48. (3) ESCs of wild-type mice were divided into pure hypoxia group, DMSO control group, HIF-1α inhibitor group, and HIF-1α stabilizer group as that of experiment (1) with the same treatment. The mRNA expression of P311 and expression of P311 in ESCs were determined by real-time fluorescent quantitative reverse transcription polymerase chain reaction and immunocytochemical staining, respectively, at PHH 0 (immediately), 12, 24, and 48 (with sample numbers of 12). (4) The second passage of human embryonic kidney 293 (HEK-293) cells were divided into empty vector hypoxia group (cells were cultured under hypoxia condition after being transfected with empty vector plasmid), P311 normoxia group (cells were cultured under normoxia condition after being transfected with P311 reporter gene plasmid), P311 hypoxia group (cells were cultured under hypoxia condition after being transfected with P311 reporter gene plasmid), P311 hypoxia+ HIF-1α inhibitor group (cells which were incubated with HIF-1α inhibitor were cultured under hypoxia condition after being transfected with P311 reporter gene plasmid). The luciferase activity was detected at post culture hour (PCH) 0 and 12, respectively, and then the P311 transcriptional regulatory binding site of HIF-1α and the promoter sequence of P311 were predicted and searched by bioinformatics methods. Data were processed with factorial design variance analysis, one-way analysis of variance, LSD test and Bonferroni correction. Results: (1) The results of ESCs. The cells showed cobblestone-like pattern and different clonal morphology due to the different cell proliferation potential. The proportion of CD71(-)CD49f(+) cells accounted for about 85%. The identification results indicated that the cells showed strong stem cell properties and high purity. Compared with those in cells of normoxia group of P311 gene knock-out mice, the residual widths of scratch of cells in pure hypoxia group were smaller at PSH 12 and 24 (with P values below 0.05), and those in hypoxia group, normoxia group of wild-type mice, DMSO control group, HIF-1α inhibitor group, and HIF-1α stabilizer group were smaller at PSH 12 (with P values below 0.05). Compared with those in cells of normoxia group of wild-type mice, the residual widths of scratch of cells in hypoxia group, pure hypoxia group, and DMSO control group were smaller at PSH 12 and 24 (with P values below 0.05), and the residual width of scratch of cells in HIF-1α stabilizer group was smaller at PSH 12 (P<0.05). Compared with those of cells in pure hypoxia group, the residual widths of scratch of cells in hypoxia group were wider at PSH 12 and 24 (with P values below 0.05), and the residual width of scratch of cells in HIF-1α inhibitor group was wider at PSH 12 (P<0.05), and those of cells in HIF-1α stabilizer group were smaller at PSH 12 and 24 (with P values below 0.05). There was no obvious difference in the width of scratch in cells among the 7 groups (F=19.02, P>0.05). The protein levels of HIF-1α in ESCs of wild-type mice at PHH 0, 12, 24, and 48 were respectively 1.02±0.05, 2.56±0.09, 1.60±0.17, and 1.17±0.03. Compared with that at PHH 0, the protein level of HIF-1α at PHH 12 was significantly enhanced (P<0.01). It began to decline at PHH 24 but was still higher than that at PHH 0 (P<0.05), and the protein level of HIF-1α at PHH 48 was close to the normoxia level (P>0.05). Compared with those of cells in pure hypoxia group, the mRNA expressions of P311 of cells in HIF-1α inhibitor group were significantly decreased at each time point (with P values below 0.05), and those in HIF-1α stabilizer group were significantly increased at PHH 12 and 24 (with P values below 0.05). Compared with those of cells in HIF-1α inhibitor group, the mRNA expressions of P311 of cells in DMSO control group and HIF-1α stabilizer group were significantly increased at PHH 0, 12, and 24 (with P values below 0.05). Compared with those of cells in pure hypoxia group, the expressions of P311 of cells in HIF-1α inhibitor group were significantly decreased at each time point (with P values below 0.05), while those in HIF-1α stabilizer group were significantly increased at PHH 12 and 24 (with P values below 0.05). Compared with those of cells in HIF-1α inhibitor group, the expressions of P311 of cells in DMSO control group and HIF-1α stabilizer group were significantly increased at PHH 12 and 24 (with P values below 0.05). (2) The results of HEK-293 cells. At PCH 0, there was no significant difference in the luciferase activity among cells of empty vector hypoxia group, P311 normoxia group, P311 hypoxia group, and P311 hypoxia+ HIF-1α inhibitor group (F=13.33, P>0.05). At PCH 12, the luciferase activity of cells in P311 hypoxia group was higher than that in empty vector hypoxia group (P<0.01). The luciferase activity of cells in hypoxia group was higher than that in P311 normoxia group (P<0.05), while that of cells in P311 hypoxia+ HIF-1α inhibitor group was lower than that in P311 hypoxia group (P<0.01). Conclusions: HIF-1α may increase the migration of murine ESCs through inducing the expression of P311 at the early stage of hypoxia.
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Pan J, Zhang Y, Ran T, Xu A, Qiao X, Yin L, Zhou W, Zhu L, Zhao J, Lu T, Chen Y, Jiang Y. QSAR modeling and in silico design of small-molecule inhibitors targeting the interaction between E3 ligase VHL and HIF-1α. Mol Divers 2017; 21:719-39. [PMID: 28689235 DOI: 10.1007/s11030-017-9750-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 05/15/2017] [Indexed: 12/19/2022]
Abstract
Protein-protein interactions (PPIs) have attracted much attention recently because of their preponderant role in most biological processes. The prevention of the interaction between E3 ligase VHL and HIF-1[Formula: see text] may improve tolerance to hypoxia and ameliorate the prognosis of many diseases. To obtain novel potent inhibitors of VHL/HIF-1[Formula: see text] interaction, a series of hydroxyproline-based inhibitors were investigated for structural optimization using a combination of QSAR modeling and molecular docking. Here, 2D- and 3D-QSAR models were developed by genetic function approximation (GFA) and comparative molecular field analysis (CoMFA) and comparative molecular similarity index analysis (CoMSIA) methods, respectively. The top-ranked models with strict validation revealed satisfactory statistical parameters (CoMFA with [Formula: see text], 0.637; [Formula: see text], 0.955; [Formula: see text], 0.944; CoMSIA with [Formula: see text], 0.649; [Formula: see text], 0.954; [Formula: see text], 0.911; GFA with [Formula: see text], 0.721; [Formula: see text], 0.801; [Formula: see text], 0.861). The selected five 2D-QSAR descriptors were in good accordance with the 3D-QSAR results, and contour maps gave the visualization of feature requirements for inhibitory activity. A new diverse molecular database was created by molecular fragment replacement and BREED techniques for subsequent virtual screening. Eventually, 31 novel hydroxyproline derivatives stood out as potential VHL/HIF-1[Formula: see text] inhibitors with favorable predictions by the CoMFA, CoMSIA and GFA models. The reliability of this protocol suggests that it could also be applied to the exploration of lead optimization of other PPI targets.
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Fraga A, Ribeiro R, Coelho A, Vizcaíno JR, Coutinho H, Lopes JM, Príncipe P, Lobato C, Lopes C, Medeiros R. Genetic polymorphisms in key hypoxia-regulated downstream molecules and phenotypic correlation in prostate cancer. BMC Urol 2017; 17:12. [PMID: 28143503 DOI: 10.1186/s12894-017-0201-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/10/2017] [Indexed: 11/19/2022] Open
Abstract
Background In this study we sought if, in their quest to handle hypoxia, prostate tumors express target hypoxia-associated molecules and their correlation with putative functional genetic polymorphisms. Methods Representative areas of prostate carcinoma (n = 51) and of nodular prostate hyperplasia (n = 20) were analysed for hypoxia-inducible factor 1 alpha (HIF-1α), carbonic anhydrase IX (CAIX), lysyl oxidase (LOX) and vascular endothelial growth factor (VEGFR2) immunohistochemistry expression using a tissue microarray. DNA was isolated from peripheral blood and used to genotype functional polymorphisms at the corresponding genes (HIF1A +1772 C > T, rs11549465; CA9 + 201 A > G; rs2071676; LOX +473 G > A, rs1800449; KDR – 604 T > C, rs2071559). Results Immunohistochemistry analyses disclosed predominance of positive CAIX and VEGFR2 expression in epithelial cells of prostate carcinomas compared to nodular prostate hyperplasia (P = 0.043 and P = 0.035, respectively). In addition, the VEGFR2 expression score in prostate epithelial cells was higher in organ-confined and extra prostatic carcinoma compared to nodular prostate hyperplasia (P = 0.031 and P = 0.004, respectively). Notably, for LOX protein the immunoreactivity score was significantly higher in organ-confined carcinomas compared to nodular prostate hyperplasia (P = 0.015). The genotype-phenotype analyses showed higher LOX staining intensity for carriers of the homozygous LOX +473 G-allele (P = 0.011). Still, carriers of the KDR−604 T-allele were more prone to have higher VEGFR2 expression in prostate epithelial cells (P < 0.006). Conclusions Protein expression of hypoxia markers (VEGFR2, CAIX and LOX) on prostate epithelial cells was different between malignant and benign prostate disease. Two genetic polymorphisms (LOX +473 G > A and KDR−604 T > C) were correlated with protein level, accounting for a potential gene-environment effect in the activation of hypoxia-driven pathways in prostate carcinoma. Further research in larger series is warranted to validate present findings. Electronic supplementary material The online version of this article (doi:10.1186/s12894-017-0201-y) contains supplementary material, which is available to authorized users.
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Iyalomhe O, Swierczek S, Enwerem N, Chen Y, Adedeji MO, Allard J, Ntekim O, Johnson S, Hughes K, Kurian P, Obisesan TO. The Role of Hypoxia-Inducible Factor 1 in Mild Cognitive Impairment. Cell Mol Neurobiol 2016; 37:969-977. [PMID: 27858285 DOI: 10.1007/s10571-016-0440-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/26/2016] [Indexed: 01/16/2023]
Abstract
Neuroinflammation and reactive oxygen species are thought to mediate the pathogenesis of Alzheimer's disease (AD), suggesting that mild cognitive impairment (MCI), a prodromal stage of AD, may be driven by similar insults. Several studies document that hypoxia-inducible factor 1 (HIF-1) is neuroprotective in the setting of neuronal insults, since this transcription factor drives the expression of critical genes that diminish neuronal cell death. HIF-1 facilitates glycolysis and glucose metabolism, thus helping to generate reductive equivalents of NADH/NADPH that counter oxidative stress. HIF-1 also improves cerebral blood flow which opposes the toxicity of hypoxia. Increased HIF-1 activity and/or expression of HIF-1 target genes, such as those involved in glycolysis or vascular flow, may be an early adaptation to the oxidative stressors that characterize MCI pathology. The molecular events that constitute this early adaptation are likely neuroprotective, and might mitigate cognitive decline or the onset of full-blown AD. On the other hand, prolonged or overwhelming stressors can convert HIF-1 into an activator of cell death through agents such as Bnip3, an event that is more likely to occur in late MCI or advanced Alzheimer's dementia.
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Affiliation(s)
- Osigbemhe Iyalomhe
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Sabina Swierczek
- Department of Hematology/BMT, University of Utah School of Medicine, 30 N Medical Dr, Salt Lake City, UT, 84132, USA
| | - Ngozi Enwerem
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Yuanxiu Chen
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Monica O Adedeji
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Joanne Allard
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Oyonumo Ntekim
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Sheree Johnson
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Kakra Hughes
- Division of Endovascular Surgery, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Philip Kurian
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA.,Human Genome Center, Howard University, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Thomas O Obisesan
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA. .,Howard University Clinical Research Unit (GHUCCTS CTSA), 2041 Georgia Ave, NW, Washington, DC, 20060, USA.
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Lee JS, Lee JH, Lee KE, Kim JH, Hong JM, Ra EK, Seo SH, Lee SJ, Kim MJ, Park SS, Seong MW. Genotype-phenotype analysis of von Hippel-Lindau syndrome in Korean families: HIF-α binding site missense mutations elevate age-specific risk for CNS hemangioblastoma. BMC Med Genet 2016; 17:48. [PMID: 27439424 PMCID: PMC4955248 DOI: 10.1186/s12881-016-0306-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 06/22/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND von Hippel-Lindau (VHL) disease is a rare hereditary tumor syndrome caused by VHL gene mutations that is characterized by heterogeneous phenotypes such as benign/malignant tumors of the central nervous system, retina, kidney, adrenal gland, and pancreas. The genotype-phenotype correlation has not been well characterized in the Korean population so far. Therefore, this study aimed to evaluate the VHL mutation spectrum and genotype-phenotype correlations in Korean VHL patients. METHODS Thirteen unrelated subjects with VHL mutations were included. Direct sequencing and multiplex ligation-dependent probe amplification were performed. Consequently, the clinical manifestations and family histories of the subjects were evaluated. RESULTS We identified 10 different VHL mutations. The c.160_161delAT frameshift mutation was novel. Missense mutations clustered in 2 domains (α domain in exon 1; β domain in exon 3). The most frequently observed mutation was c.208G > A (p.Glu70Lys). Milder phenotypes were observed in subjects with de novo mutations. Age-specific risk for CNS hemangioblastoma was significantly higher in subjects carrying missense mutations within the HIF-α binding site (P < 0.05). CONCLUSIONS This study provides insight into the genotype-phenotype correlation in that amino acid substitutions in the HIF-α binding site may predispose patients to age-related risks of CNS hemangioblastoma.
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Affiliation(s)
- Jee-Soo Lee
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Ji-Hyun Lee
- Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Kyu Eun Lee
- Department of Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Jung Hee Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Joon Mo Hong
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Eun Kyung Ra
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Soo Hyun Seo
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Seung Jun Lee
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Man Jin Kim
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Sung Sup Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Moon-Woo Seong
- Department of Laboratory Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea.
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Divolis G, Mavroeidi P, Mavrofrydi O, Papazafiri P. Differential effects of calcium on PI3K-Akt and HIF-1α survival pathways. Cell Biol Toxicol 2016; 32:437-49. [PMID: 27344565 DOI: 10.1007/s10565-016-9345-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/20/2016] [Indexed: 12/19/2022]
Abstract
Calcium signaling participates in the regulation of numberless cellular functions including cell cycle progression and cellular migration, important processes for cancer expansion. Cancer cell growth, migration, and invasion are typically supported by PI3K/Akt activation, while a hypoxic environment is critical in cancer development. Accordingly, in the present study, we aimed at investigating whether perturbations in calcium homeostasis induce alterations of HIF-1α and activate Akt levels in epithelial A549 and A431 cells. Survival was drastically reduced in the presence of calcium chelator BAPTA-AM and thapsigargin, a SERCA inhibitor inducing store-operated calcium entry, to a lesser extent. Calcium chelation provoked a transient but strong upregulation of HIF-1α protein levels and accumulation in the nucleus, whereas in the presence of thapsigargin, HIF-1α levels were rapidly abolished before reaching and exceeding control levels. Despite cell death, calcium chelation merely inhibited Akt, which was significantly activated in the presence of thapsigargin. Moreover, when store-operated calcium entry was simulated by reintroducing calcium ions in cell suspensions, Akt was rapidly activated in the absence of any growth factor. These data further underscore the growing importance of calcium entry and directly link this elementary event of calcium homeostasis to the Akt pathway, which is commonly deregulated in cancer.
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Affiliation(s)
- Georgios Divolis
- Division of Animal and Human Physiology, Department of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, 15784, Athens, Greece.,Center for Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation, Academy of Athens, Soranou Efesiou 4, 11527, Athens, Greece
| | - Panagiota Mavroeidi
- Division of Animal and Human Physiology, Department of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, 15784, Athens, Greece
| | - Olga Mavrofrydi
- Division of Animal and Human Physiology, Department of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, 15784, Athens, Greece
| | - Panagiota Papazafiri
- Division of Animal and Human Physiology, Department of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, 15784, Athens, Greece.
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Fan R, Hou WJ, Zhao YJ, Liu SL, Qiu XS, Wang EH, Wu GP. Overexpression of HPV16 E6/E7 mediated HIF-1α upregulation of GLUT1 expression in lung cancer cells. Tumour Biol 2015; 37:4655-63. [PMID: 26508030 DOI: 10.1007/s13277-015-4221-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/12/2015] [Indexed: 12/19/2022] Open
Abstract
High-risk human papillomavirus (HPV) infection may play an important role in non-small cell lung carcinoma (NSCLC) development. However, some recent studies have proved that it was not directly associated with lung cancer. The aim of this study was to evaluate the underlying molecular mechanism that HPV16 regulate the expression of GLUT1 and may promote the development of lung cancer. HPV16, HIF-1α, and GLUT1 were detected in pleural effusions of patients with lung cancer (n = 95) and with benign lung disease (n = 55) by immunocytochemistry. Western blotting and qRT-PCR were used to detect the expression chances of HPV16 E6/E7, HIF-1α, and GLUT1 in lung cancer cells. HPV16, HIF-1α, and GLUT1 were significantly more likely to be expressed in the malignant group than in the benign group as detected by immunocytochemistry (ICC), and HIF-1α was significantly correlated with HPV16 or GLUT1 in the malignant group (P < 0.01). Expression changes of E6 and E7 significantly promoted the protein expression of HIF-1α, the expression of both protein and mRNA of GLUT1, but had no effect on the expression of HIF-1α mRNA in lung cancer cells. After inhibition of HIF-1α, it obviously downregulated the expression of both protein and mRNA of GLUT1 in lung cancer cells. E6 and E7 regulated the expression of GLUT1 may be due to the mediation of HIF-1α in lung cancer cells. These results suggest that both E6 and E7 play the important role in the regulation of Warburg effect and may be a valuable therapeutic target for HPV-related cancer.
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Affiliation(s)
- Rong Fan
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - Wei-Jian Hou
- Department of Tissue Engineering, College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - Yu-Jie Zhao
- Center of Biochip, College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - Shu-Li Liu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - Xue-Shan Qiu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - En-Hua Wang
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | - Guang-Ping Wu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China.
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Habryka A, Gogler-Pigłowska A, Sojka D, Kryj M, Krawczyk Z, Scieglinska D. Cell type-dependent modulation of the gene encoding heat shock protein HSPA2 by hypoxia-inducible factor HIF-1: Down-regulation in keratinocytes and up-regulation in HeLa cells. Biochim Biophys Acta 2015; 1849:1155-69. [PMID: 26164067 DOI: 10.1016/j.bbagrm.2015.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/24/2015] [Accepted: 07/07/2015] [Indexed: 11/26/2022]
Abstract
HSPA2 belongs to the multigene HSPA family, whose members encode chaperone proteins. Although expression and function of HSPA2 is mainly associated with spermatogenesis, recent studies demonstrated that in humans, the gene is active in various cancers, as well as in normal tissues, albeit in a cell type-specific manner. In the epidermis, HSPA2 is expressed in keratinocytes in the basal layer. Currently, the mechanisms underlying the regulation of HSPA2 expression remain unknown. This study was aimed at determining whether HIF-1 and its binding site, the hypoxia-response element (HRE) located in the HSPA2 promoter, are involved in HSPA2 regulation. As a model system, we used an immortal human keratinocyte line (HaCaT) and cervical cancer cells (HeLa) grown under control or hypoxic conditions. Using an in vitro gene reporter assay, we demonstrated that in keratinocytes HSPA2 promoter activity is reduced under conditions that facilitate stabilization of HIF-1α, whereas HIF-1 inhibitors abrogated the suppressive effect of hypoxia on promoter activity. Chromatin immunoprecipitation revealed that HIF-1α binds to the HSPA2 promoter. In keratinocytes, hypoxia or overexpression of a stable form of HIF-1α attenuated the expression of endogenous HSPA2, whereas targeted repression of HIF-1α by RNAi increased transcription of HSPA2 under hypoxia. Conversely, in HeLa cells, HSPA2 expression increased under conditions that stimulated HIF-1α activity, whereas inhibition of HIF-1α abrogated hypoxia-induced up-regulation of HSPA2 expression. Taken together, our results demonstrate that HIF-1 can exert differential, cell context-dependent regulatory control of the HSPA2 gene. Additionally, we also showed that HSPA2 expression can be stimulated during hypoxia/reoxygenation stress.
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Affiliation(s)
- Anna Habryka
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Agnieszka Gogler-Pigłowska
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Damian Sojka
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Mariusz Kryj
- The Oncologic and Reconstructive Surgery Clinic, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Zdzisław Krawczyk
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Dorota Scieglinska
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland.
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Zhao H, Wu Y, Chen Y, Liu H. Clinical significance of hypoxia-inducible factor 1 and VEGF-A in osteosarcoma. Int J Clin Oncol 2015; 20:1233-43. [PMID: 26077139 DOI: 10.1007/s10147-015-0848-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 05/11/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although the function of hypoxia-inducible factor 1 (HIF1) in many kinds of solid tumor has been revealed, the significance of HIF1 in osteosarcoma is still controversial and not well understood. METHODS Immunohistochemistry was used to detect HIF1 expression. The correlation between HIF1 and clinicopathology factors was analyzed by use of chi-squared tests. The prognostic value of HIF1 was evaluated by univariate and multivariate analysis. Moreover, the function of HIF1 in osteosarcoma cells was further investigated in in-vitro experiments by regulating HIF1 and vascular endothelial growth factor-A (VEGF-A) expression. RESULTS Expression of HIF1 was high for 56.82 % of the samples in our investigation. HIF1 expression was significantly associated with positive metastasis (P = 0.037). By use of the Kaplan-Meier method, high expression of HIF1 was proved to be related to poorer overall survival (P = 0.007). By use of a Cox-regression model, HIF1 was identified as an independent prognostic biomarker (P = 0.019). We also proved that HIF1 can promote osteosarcoma invasion in hypoxia by inducing VEGF-A expression. CONCLUSIONS HIF1 was identified as an independent prognostic biomarker in osteosarcoma. It can promote osteosarcoma cell invasion by inducing VEGF-A expression, indicating that HIF1 is a potential drug target in osteosarcoma.
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Fraga A, Ribeiro R, Príncipe P, Lopes C, Medeiros R. Hypoxia and Prostate Cancer Aggressiveness: A Tale With Many Endings. Clin Genitourin Cancer 2015; 13:295-301. [PMID: 26007708 DOI: 10.1016/j.clgc.2015.03.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 03/13/2015] [Accepted: 03/23/2015] [Indexed: 02/07/2023]
Abstract
Angiogenesis, increased glycolysis, and cellular adaptation to hypoxic microenvironment are characteristic of solid tumors, including prostate cancer. These representative features are the cornerstone of cancer biology, which are well correlated with invasion, metastasis, and lethality, as well as likely with the success of prostate cancer treatment (eg, tumor hypoxia has been associated with resistance to chemotherapy and radiotherapy). It is well established that prostate cancer cells also metabolically depend on enhanced glucose transport and glycolysis for expansion, whereas growth is contingent with neovascularization to permit diffusion of oxygen and glucose. While hypoxia inducible factor 1 alpha (HIF-1α) remains the central player, the succeeding activated molecules and pathways track distinct branches, all positively correlated with the degree of intratumoral hypoxia. Among these, the vascular endothelial growth factor axis as well as the lysyl oxidase and carbonic anhydrase IX activities are notable in prostate cancer and merit further study. Here, we demonstrate their linkage with HIF-1α as a tentative explanatory mechanism of prostate cancer aggressiveness. Hypoxia drives a tale where HIF-1α-dependent effects lead to many influences in distinct key cancer biology features, rendering targeted therapies toward targets at the endings less efficient. The most appropriate approach will be to inhibit the upstream common driver (HIF-1α) activity. Additional translational and clinical research initiatives in prostate cancer are required to prove its usefulness.
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Affiliation(s)
- Avelino Fraga
- Urology Department, Porto Hospital Centre, St António Hospital, Porto, Portugal; ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Porto, Portugal; Center for Urological Research, Porto Hospital Centre, Porto, Portugal.
| | - Ricardo Ribeiro
- Center for Urological Research, Porto Hospital Centre, Porto, Portugal; Molecular Oncology Group, CI, Portuguese Institute of Oncology, Porto, Portugal; Genetics Laboratory, Faculty of Medicine, University of Lisbon, Lisbon, Portugal; Research Department, Portuguese League Against Cancer, North Centre, Porto, Portugal
| | - Paulo Príncipe
- Urology Department, Porto Hospital Centre, St António Hospital, Porto, Portugal; Center for Urological Research, Porto Hospital Centre, Porto, Portugal
| | - Carlos Lopes
- ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Porto, Portugal
| | - Rui Medeiros
- Center for Urological Research, Porto Hospital Centre, Porto, Portugal; Molecular Oncology Group, CI, Portuguese Institute of Oncology, Porto, Portugal; Research Department, Portuguese League Against Cancer, North Centre, Porto, Portugal
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Abstract
The overall redox potential of a cell is primarily determined by oxidizable/reducible chemical pairs, including glutathione–glutathione disulfide, reduced thioredoxin–oxidized thioredoxin, and NAD+–NADH (and NADP–NADPH). Current methods for evaluating oxidative stress rely on detecting levels of individual byproducts of oxidative damage or by determining the total levels or activity of individual antioxidant enzymes. Oxidation–reduction potential (ORP), on the other hand, is an integrated, comprehensive measure of the balance between total (known and unknown) pro-oxidant and antioxidant components in a biological system. Much emphasis has been placed on the role of oxidative stress in chronic diseases, such as Alzheimer's disease and atherosclerosis. The role of oxidative stress in acute diseases often seen in the emergency room and intensive care unit is considerable. New tools for the rapid, inexpensive measurement of both redox potential and total redox capacity should aid in introducing a new body of literature on the role of oxidative stress in acute illness and how to screen and monitor for potentially beneficial pharmacologic agents.
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Affiliation(s)
- David Bar-Or
- Swedish Medical Center, Englewood, CO, USA; St. Anthony Hospital, Lakewood, CO, USA; The Medical Center of Plano, Plano, TX, USA.
| | - Raphael Bar-Or
- Swedish Medical Center, Englewood, CO, USA; St. Anthony Hospital, Lakewood, CO, USA; The Medical Center of Plano, Plano, TX, USA.
| | - Leonard T Rael
- Swedish Medical Center, Englewood, CO, USA; St. Anthony Hospital, Lakewood, CO, USA; The Medical Center of Plano, Plano, TX, USA.
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48
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Jang TY, Park CS, Kim KS, Heo MJ, Kim YH. Benzaldehyde suppresses murine allergic asthma and rhinitis. Int Immunopharmacol 2014; 22:444-50. [PMID: 25107441 DOI: 10.1016/j.intimp.2014.07.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/16/2014] [Accepted: 07/25/2014] [Indexed: 12/09/2022]
Abstract
To evaluate the antiallergic effects of oral benzaldehyde in a murine model of allergic asthma and rhinitis, we divided 20 female BALB/c mice aged 8-10 weeks into nonallergic (intraperitoneally sensitized and intranasally challenged to normal saline), allergic (intraperitoneally sensitized and intranasally challenged to ovalbumin), and 200- and 400-mg/kg benzaldehyde (allergic but treated) groups. The number of nose-scratching events in 10 min, levels of total and ovalbumin-specific IgE in serum, differential counts of inflammatory cells in bronchoalveolar lavage (BAL) fluid, titers of Th2 cytokines (IL-4, IL-5, IL-13) in BAL fluid, histopathologic findings of lung and nasal tissues, and expressions of proteins involved in apoptosis (Bcl-2, Bax, caspase-3), inflammation (COX-2), antioxidation (extracellular SOD, HO-1), and hypoxia (HIF-1α, VEGF) in lung tissue were evaluated. The treated mice had significantly fewer nose-scratching events, less inflammatory cell infiltration in lung and nasal tissues, and lower HIF-1α and VEGF expressions in lung tissue than the allergic group. The number of eosinophils and neutrophils and Th2 cytokine titers in BAL fluid significantly decreased after the treatment (P<0.05). These results imply that oral benzaldehyde exerts antiallergic effects in murine allergic asthma and rhinitis, possibly through inhibition of HIF-1α and VEGF.
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Affiliation(s)
- Tae Young Jang
- Department of Otorhinolaryngology, Head and Neck Surgery, Inha University College of Medicine, Incheon, Republic of Korea
| | - Chang-Shin Park
- Department of Pharmacology, Hypoxia-Related Disease Research Center, Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon, Republic of Korea
| | - Kyu-Sung Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Inha University College of Medicine, Incheon, Republic of Korea
| | - Min-Jeong Heo
- Department of Otorhinolaryngology, Head and Neck Surgery, Inha University College of Medicine, Incheon, Republic of Korea
| | - Young Hyo Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Inha University College of Medicine, Incheon, Republic of Korea.
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Smith TAD, Zanda M, Fleming IN. Hypoxia stimulates 18F-fluorodeoxyglucose uptake in breast cancer cells via hypoxia inducible factor-1 and AMP-activated protein kinase. Nucl Med Biol 2013; 40:858-64. [PMID: 23786679 DOI: 10.1016/j.nucmedbio.2013.05.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/10/2013] [Accepted: 05/12/2013] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Hypoxia can stimulate (18)F-fluorodeoxyglucose (FDG) uptake in cultured cells. A better understanding of the underlying molecular mechanism is required to determine the value of FDG for studying tumour hypoxia. METHODS The effect of hypoxia on FDG uptake, and key proteins involved in glucose transport and glycolysis, was studied in MCF7 and MDA231 breast cancer cell lines. RESULTS Hypoxia induced a dose- and time-dependent increase in FDG uptake. The FDG increase was transient, suggesting that FDG uptake is only likely to be increased by acute hypoxia (<24 h). Molecular analysis indicated that hypoxia upregulated glut1 and 6-phosphofructo-2-kinase, key proteins involved in regulating glucose transport and glycolysis, and that these changes were induced by Hypoxia-Inducible factor 1 (HIF1) upregulation and/or AMP-activated protein kinase activation. CONCLUSIONS FDG may provide useful information about the oxygenation status of cells in hypoxic regions where HIF1 upregulation is hypoxia-driven.
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Affiliation(s)
- Tim A D Smith
- Division of Applied Medicine, School of Medicine and Dentistry, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD
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50
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Zhao F, Severson P, Pacheco S, Futscher BW, Klimecki WT. Arsenic exposure induces the Warburg effect in cultured human cells. Toxicol Appl Pharmacol 2013; 271:72-7. [PMID: 23648393 DOI: 10.1016/j.taap.2013.04.020] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 01/09/2023]
Abstract
Understanding how arsenic exacts its diverse, global disease burden is hampered by a limited understanding of the particular biological pathways that are disrupted by arsenic and underlie pathogenesis. A reductionist view would predict that a small number of basic pathways are generally perturbed by arsenic, and manifest as diverse diseases. Following an initial observation that arsenite-exposed cells in culture acidify their media more rapidly than control cells, the report here shows that low level exposure to arsenite (75ppb) is sufficient to induce aerobic glycolysis (the Warburg effect) as a generalized phenomenon in cultured human primary cells and cell lines. Expanded studies in one such cell line, the non-malignant pulmonary epithelial line, BEAS-2B, established that the arsenite-induced Warburg effect was associated with increased accumulation of intracellular and extracellular lactate, an increased rate of extracellular acidification, and inhibition by the non-metabolized glucose analog, 2-deoxy-D-glucose. Associated with the induction of aerobic glycolysis was a pathway-wide induction of glycolysis gene expression, as well as protein accumulation of an established glycolysis master-regulator, hypoxia-inducible factor 1A. Arsenite-induced alteration of energy production in human cells represents the type of fundamental perturbation that could extend to many tissue targets and diseases.
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Affiliation(s)
- Fei Zhao
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ 85724, USA
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