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Guo J, Shoji T, Ge Y, Zheng X, Li Y, Zhao S, Ikezoe T, Liu S, Huang J, Wang W, Xu B, Dalman RL. Treatment with the Prolyl Hydroxylase Inhibitor JNJ Promotes Abdominal Aortic Aneurysm Progression in Diabetic Mice. Eur J Vasc Endovasc Surg 2021; 63:484-494. [PMID: 34872812 DOI: 10.1016/j.ejvs.2021.10.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 09/21/2021] [Accepted: 10/09/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Prolyl hydroxylase domain containing proteins (PHD) rigorously regulate intracellular hypoxia inducible factor-1 (HIF-1) protein expression and activity. Diabetes impairs PHD activity and attenuates abdominal aortic aneurysm (AAA) progression. The extent to which dysregulated PHD activity contributes to diabetes mediated AAA suppression remains undetermined. METHODS AAAs were induced in diabetic and non-diabetic male C57BL/6J mice via intra-aortic elastase infusion. A PHD inhibitor (JNJ-42041935, aka "JNJ", 150 mmol/kg) or vehicle alone was administered daily starting one day prior to AAA induction for 14 days. Influences on AAA progression was assessed via ultrasonography and histopathology. Expression of aortic HIF-1α, three of its target genes and macrophage derived mediators were assayed via quantitative reverse transcription polymerase chain reaction. Aneurysmal sections from AAA patients with and without diabetes (two patients in each group) were immunostained for HIF-1α and vascular endothelial growth factor (VEGF)-A. RESULTS Expression of HIF-1α target genes (erythropoietin, VEGF-A, and glucose transporter-1) was reduced by 45% - 95% in experimental diabetic aortas. Diameter enlargement was similarly limited, as were mural elastin degradation, leukocyte infiltration, and neo-angiogenesis (reduced capillary density and length) on histopathology. Pre-treatment with JNJ prior to AAA initiation augmented aortic HIF-1α target gene expression and aneurysm progression in diabetic mice, along with macrophage VEGF-A and matrix metalloproteinase 2 mRNA expression. No differences were noted in HIF-1α or VEGF-A expression on aortic immunohistochemical staining of human aortic tissue as a function of diabetes status. CONCLUSION Small molecule PHD inhibitor treatment reduces or offsets impairment of experimental AAA progression in hyperglycemic mice, highlighting the potential contribution of dysregulated PHD activity to diabetes mediated aneurysm suppression.
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Affiliation(s)
- Jia Guo
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA; Centre for Hypertension Care, Shanxi Medical University First Hospital, Taiyuan, Shanxi Province, P. R. China
| | - Tahakiro Shoji
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA; Department of Emergency Medicine, Saiseikai Central Hospital, Minatoku, Tokyo, Japan
| | - Yingbin Ge
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu Province, P. R. China
| | - Xiaoya Zheng
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Yankui Li
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Sihai Zhao
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Toru Ikezoe
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Shuai Liu
- Department of Vascular Surgery, Central South University School of Medicine, Changsha, Hunan Province, P. R. China
| | - Jianhua Huang
- Department of Vascular Surgery, Central South University School of Medicine, Changsha, Hunan Province, P. R. China
| | - Wei Wang
- Department of Vascular Surgery, Central South University School of Medicine, Changsha, Hunan Province, P. R. China
| | - Baohui Xu
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
| | - Ronald L Dalman
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
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Lestón Pinilla L, Ugun-Klusek A, Rutella S, De Girolamo LA. Hypoxia Signaling in Parkinson's Disease: There Is Use in Asking "What HIF?". BIOLOGY 2021; 10:723. [PMID: 34439955 PMCID: PMC8389254 DOI: 10.3390/biology10080723] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 12/23/2022]
Abstract
Hypoxia is a condition characterized by insufficient tissue oxygenation, which results in impaired oxidative energy production. A reduction in cellular oxygen levels induces the stabilization of hypoxia inducible factor α (HIF-1α), master regulator of the molecular response to hypoxia, involved in maintaining cellular homeostasis and driving hypoxic adaptation through the control of gene expression. Due to its high energy requirement, the brain is particularly vulnerable to oxygen shortage. Thus, hypoxic injury can cause significant metabolic changes in neural cell populations, which are associated with neurodegeneration. Recent evidence suggests that regulating HIF-1α may ameliorate the cellular damage in neurodegenerative diseases. Indeed, the hypoxia/HIF-1α signaling pathway has been associated to several processes linked to Parkinson's disease (PD) including gene mutations, risk factors and molecular pathways such as mitochondrial dysfunction, oxidative stress and protein degradation impairment. This review will explore the impact of hypoxia and HIF-1α signaling on these specific molecular pathways that influence PD development and will evaluate different novel neuroprotective strategies involving HIF-1α stabilization.
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Affiliation(s)
- Laura Lestón Pinilla
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Aslihan Ugun-Klusek
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Sergio Rutella
- John van Geest Cancer Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Luigi A. De Girolamo
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
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Liu T, Gao Q, Yang B, Yin C, Chang J, Qian H, Xing G, Wang S, Li F, Zhang Y, Chen D, Cai J, Shi H, Aschner M, Appiah-Kubi K, He D, Lu R. Differential susceptibility of PC12 and BRL cells and the regulatory role of HIF-1α signaling pathway in response to acute methylmercury exposure under normoxia. Toxicol Lett 2020; 331:82-91. [PMID: 32461003 PMCID: PMC7366344 DOI: 10.1016/j.toxlet.2020.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 12/24/2022]
Abstract
Hypoxia-inducible factor 1 (HIF-1) is a critical nuclear transcription factor for adaptation to hypoxia; its regulatable subunit, HIF-1α, is a cytoprotective regulatory factor. We examined the effects of methylmercury (MeHg) in rat adrenal pheochromocytoma (PC12) cells and the rat hepatocyte cell line BRL. MeHg treatment led to time- and concentration-dependent toxicity in both lines with statistically significant cytotoxic effects at 5 μM and 10 μM in PC12 and BRL, respectively, at 0.5 h. HIF-1α protein levels were significantly decreased at 2.5 (PC12) and 5 (BRL) μM MeHg. Furthermore, MeHg reduced the protein levels of HIF-1α and its target genes (glucose transporter-1, vascular endothelial growth factor-A and erythropoietin). Overexpression of HIF-1α significantly attenuated MeHg-induced toxicity in both cell types. Notably, cobalt chloride, a pharmacological inducer of HIF-1α, significantly attenuated MeHg-induced toxicity in BRL but not PC12. In both cell lines, an inhibitor of prolyl hydroxylase, 3, 4-dihydroxybenzoic acid, and the proteasome inhibitor carbobenzoxy-L-leucyl-L-leucyl-L-leucinal(MG132), antagonized MeHg toxicity, while 2-methoxyestradiol, a HIF-1α inhibitor, significantly increased it. These data establish that: (a) neuron-like PC12 cells are more sensitive to MeHg than non-neuronal BRL cells; (b) HIF-1α plays a similar role in MeHg-induced toxicity in both cell lines; and (c) upregulation of HIF-1α offers general cytoprotection against MeHg toxicity in PC12 and BRL cell lines.
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Affiliation(s)
- Tingting Liu
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qianqian Gao
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Bobo Yang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Changsheng Yin
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jie Chang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hai Qian
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Guangwei Xing
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Suhua Wang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Fang Li
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yubin Zhang
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Da Chen
- School of Environment, Jinan University, Guangzhou, Guangdong 510632, China
| | - Jiyang Cai
- Department of Physiology, College of Medicine, University of Oklahoma Health Science Center, Lindsay, Oklahoma City, OK 73104, USA
| | - Haifeng Shi
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kwaku Appiah-Kubi
- Department of Applied Biology, C. K. Tedam University of Technology and Applied Sciences, Navrongo, UK-0215-5321, Ghana
| | - Dawei He
- Center for Experimental Research, Kunshan Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215130, China
| | - Rongzhu Lu
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Center for Experimental Research, Kunshan Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215130, China.
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Hey SM, Jensen P, Ryding M, Martínez Serrano A, Kristensen BW, Meyer M. Nonhypoxic pharmacological stabilization of Hypoxia Inducible Factor 1α: Effects on dopaminergic differentiation of human neural stem cells. Eur J Neurosci 2018; 49:497-509. [PMID: 30471165 DOI: 10.1111/ejn.14284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/13/2018] [Accepted: 11/07/2018] [Indexed: 01/01/2023]
Abstract
Parkinson's disease is a neurodegenerative disease resulting in degeneration of midbrain dopaminergic neurons. Exploratory studies using human foetal tissue or predifferentiated stem cells have suggested that intracerebral transplantation of dopaminergic precursor cells may become an effective treatment for patients with Parkinson's disease. However, strategies for dopaminergic stem cell differentiation vary widely in efficiency, and better methods still need to be developed. Hypoxia Inducible Factor 1 (HIF-1) is a transcription factor involved in the regulation of genes important for cellular adaption to hypoxia and low glucose supply. HIF-1 is to a large degree regulated by the availability of oxygen as in its presence, the subunit HIF-1α is degraded by HIF prolyl hydroxylase enzymes (HPHs). Stabilization of HIF-1α through inhibition of HPHs has been shown to increase dopaminergic differentiation of stem cells and to protect dopaminergic neurons against neurotoxins. This study investigated the effects of noncompetitive (FG-0041) and competitive (Compound A and JNJ-42041935) HIF-1α stabilizing compounds on the dopaminergic differentiation of human neural stem cells. Treatment with all HPH inhibitors at high oxygen tension (20%) resulted in HIF-1α stabilization as assessed by immunocytochemistry for HIF-1α and detection of increased levels of vascular endothelial growth factor in the conditioned culture medium. Following 10 days of HIF-1α stabilization, the cultures displayed a slightly reduced proliferative activity and significantly increased relative levels of tyrosine hydroxylase-positive dopaminergic neurons. In conclusion, HIF-1α stabilization may represent a promising strategy for the generation of dopaminergic neurons intended for use in experimental in vitro studies and cell replacement therapies.
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Affiliation(s)
- Sabine Morris Hey
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Pia Jensen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Matias Ryding
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Alberto Martínez Serrano
- Department of Molecular Biology and Center of Molecular Biology Severo Ochoa, Autonomous University of Madrid-C.S.I.C Campus Cantoblanco, Madrid, Spain
| | - Bjarne W Kristensen
- Department of Pathology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Iizumi T, Takahashi S, Mashima K, Minami K, Izawa Y, Abe T, Hishiki T, Suematsu M, Kajimura M, Suzuki N. A possible role of microglia-derived nitric oxide by lipopolysaccharide in activation of astroglial pentose-phosphate pathway via the Keap1/Nrf2 system. J Neuroinflammation 2016; 13:99. [PMID: 27143001 PMCID: PMC4855896 DOI: 10.1186/s12974-016-0564-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/26/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Toll-like receptor 4 (TLR4) plays a pivotal role in the pathophysiology of stroke-induced inflammation. Both astroglia and microglia express TLR4, and endogenous ligands produced in the ischemic brain induce inflammatory responses. Reactive oxygen species (ROS), nitric oxide (NO), and inflammatory cytokines produced by TLR4 activation play harmful roles in neuronal damage after stroke. Although astroglia exhibit pro-inflammatory responses upon TLR4 stimulation by lipopolysaccharide (LPS), they may also play cytoprotective roles via the activation of the pentose phosphate pathway (PPP), reducing oxidative stress by glutathione peroxidase. We investigated the mechanisms by which astroglia reduce oxidative stress via the activation of PPP, using TLR4 stimulation and hypoxia in concert with microglia. METHODS In vitro experiments were performed using cells prepared from Sprague-Dawley rats. Coexisting microglia in the astroglial culture were chemically eliminated using L-leucine methyl ester (LME). Cells were exposed to LPS (0.01 μg/mL) or hypoxia (1 % O2) for 12-15 h. PPP activity was measured using [1-(14)C]glucose and [6-(14)C]glucose. ROS and NO production were measured using 2',7'-dichlorodihydrofluorescein diacetate and diaminofluorescein-FM diacetate, respectively. The involvement of nuclear factor-erythroid-2-related factor 2 (Nrf2), a cardinal transcriptional factor under stress conditions that regulates glucose 6-phosphate dehydrogenase, the rate-limiting enzyme of PPP, was evaluated using immunohistochemistry. RESULTS Cultured astroglia exposed to LPS elicited 20 % increases in PPP flux, and these actions of astroglia appeared to involve Nrf2. However, the chemical depletion of coexisting microglia eliminated both increases in PPP and astroglial nuclear translocation of Nrf2. LPS induced ROS and NO production in the astroglial culture containing microglia but not in the microglia-depleted astroglial culture. LPS enhanced astroglial ROS production after glutathione depletion. U0126, an upstream inhibitor of mitogen-activated protein kinase, eliminated LPS-induced NO production, whereas ROS production was unaffected. U0126 also eliminated LPS-induced PPP activation in astroglial-microglial culture, indicating that microglia-derived NO mediated astroglial PPP activation. Hypoxia induced astroglial PPP activation independent of the microglia-NO pathway. Elimination of ROS and NO production by sulforaphane, a natural Nrf2 activator, confirmed the astroglial protective mechanism. CONCLUSIONS Astroglia in concert with microglia may play a cytoprotective role for countering oxidative stress in stroke.
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Affiliation(s)
- Takuya Iizumi
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan
| | - Shinichi Takahashi
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan.
| | - Kyoko Mashima
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan
| | - Kazushi Minami
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan
| | - Yoshikane Izawa
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan
| | - Takato Abe
- Department of Neurology, Osaka City University Graduate School of Medicine, Osaka-shi, 545-8585, Osaka , Japan
| | - Takako Hishiki
- Department of Biochemistry, Keio University School of Medicine, Shinjuku-ku, 160-8582, Tokyo, Japan.,Clinical and Translational Research Center, Keio University School of Medicine, Shinjuku-ku, 160-8582, Tokyo, Japan.,JST Exploratory Research for Advanced Technology (ERATO) Suematsu Gas Biology Project, Shinjuku-ku, 160-8582, Tokyo , Japan
| | - Makoto Suematsu
- Department of Biochemistry, Keio University School of Medicine, Shinjuku-ku, 160-8582, Tokyo, Japan.,JST Exploratory Research for Advanced Technology (ERATO) Suematsu Gas Biology Project, Shinjuku-ku, 160-8582, Tokyo , Japan
| | - Mayumi Kajimura
- Department of Biochemistry, Keio University School of Medicine, Shinjuku-ku, 160-8582, Tokyo, Japan.,JST Exploratory Research for Advanced Technology (ERATO) Suematsu Gas Biology Project, Shinjuku-ku, 160-8582, Tokyo , Japan
| | - Norihiro Suzuki
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, 160-8582, Tokyo, Japan
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