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Gao L, Sun W, Zhang L, Liang C, Zhang D. Caffeine upregulates SIRT3 expression to ameliorate astrocytes-mediated HIV-1 Tat neurotoxicity via suppression of EGR1 signaling pathway. J Neurovirol 2024:10.1007/s13365-024-01222-x. [PMID: 38926255 DOI: 10.1007/s13365-024-01222-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
Caffeine is one of the most popular consumed psychostimulants that mitigates several neurodegenerative diseases. Nevertheless, the roles and molecular mechanisms of caffeine in HIV-associated neurocognitive disorders (HAND) remain largely unclear. Transactivator of transcription (Tat) is a major contributor to the neuropathogenesis of HAND in the central nervous system. In the present study, we determined that caffeine (100 µM) treatment significantly ameliorated Tat-induced decreased astrocytic viability, oxidative stress, inflammatory response and excessive glutamate and ATP release, thereby protecting neurons from apoptosis. Subsequently, SIRT3 was demonstrated to display neuroprotective effects against Tat during caffeine treatment. In addition, Tat downregulated SIRT3 expression via activation of EGR1 signaling, which was reversed by caffeine treatment in astrocytes. Overexpression of EGR1 entirely abolished the neuroprotective effects of caffeine against Tat. Furthermore, counteracting Tat or caffeine-induced differential expression of SIRT3 abrogated the neuroprotection of caffeine against Tat-triggered astrocytic dysfunction and neuronal apoptosis. Taken together, our study establishes that caffeine ameliorates astrocytes-mediated Tat neurotoxicity by targeting EGR1/SIRT3 signaling pathway. Our findings highlight the beneficial effects of caffeine on Tat-induced astrocytic dysfunction and neuronal death and propose that caffeine might be a novel therapeutic drug for relief of HAND.
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Affiliation(s)
- Lin Gao
- Medical Research Center, Affiliated Hospital 2 of Nantong University, No. 666, Shengli Road, Nantong, 226001, Jiangsu, People's Republic of China.
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
| | - Weixi Sun
- Disease Prevention and Control Center of Chongchuan District, Nantong, 226000, People's Republic of China
- Health Commission of Chongchuan District, Nantong, 226000, People's Republic of China
| | - Lei Zhang
- Nantong Health College of Jiangsu Province, Nantong, 226001, People's Republic of China
| | - Caixia Liang
- Medical Research Center, Affiliated Hospital 2 of Nantong University, No. 666, Shengli Road, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
| | - Dongmei Zhang
- Medical Research Center, Affiliated Hospital 2 of Nantong University, No. 666, Shengli Road, Nantong, 226001, Jiangsu, People's Republic of China.
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China.
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2
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Yimiti M, Fei X, Yang H, Yang X, Li S, Tuoheniyazi H, Liu D, Ma J, Xie J, Zheng J, Song Z, Li Q, Xu D, Zhao Y, Gu Z. HDAC6 inhibitor promotes reactive oxygen species-meditated clearance of Staphylococcus aureus in macrophage. Clin Exp Pharmacol Physiol 2024; 51:e13866. [PMID: 38719209 DOI: 10.1111/1440-1681.13866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 05/30/2024]
Abstract
Staphylococcus aureus (S. aureus) pneumonia has become an increasingly important public health problem. Recent evidence suggests that epigenetic modifications are critical in the host immune defence against pathogen infection. In this study, we found that S. aureus infection induces the expression of histone deacetylase 6 (HDAC6) in a dose-dependent manner. Furthermore, by using a S. aureus pneumonia mouse model, we showed that the HDAC6 inhibitor, tubastatin A, demonstrates a protective effect in S. aureus pneumonia, decreasing the mortality and destruction of lung architecture, reducing the bacterial burden in the lungs and inhibiting inflammatory responses. Mechanistic studies in primary bone marrow-derived macrophages demonstrated that the HDAC6 inhibitors, tubastatin A and tubacin, reduced the intracellular bacterial load by promoting bacterial clearance rather than regulating phagocytosis. Finally, N-acetyl-L- cysteine, a widely used reactive oxygen species (ROS) scavenger, antagonized ROS production and significantly inhibited tubastatin A-induced S. aureus clearance. These findings demonstrate that HDAC6 inhibitors promote the bactericidal activity of macrophages by inducing ROS, an important host factor for S. aureus clearance and production. Our study identified HDAC6 as a suitable epigenetic modification target for preventing S. aureus infection, and tubastatin A as a useful compound in treating S. aureus pneumonia.
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Affiliation(s)
- Maimaitiaili Yimiti
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuefeng Fei
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hao Yang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaobao Yang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuhui Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huxidanmu Tuoheniyazi
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danping Liu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junrui Ma
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jialing Xie
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Juanjuan Zheng
- Blood Transfusion Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou, Shandong, China
| | - Zhen Song
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingtian Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dakang Xu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanan Zhao
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhidong Gu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laboratory Medicine, Ruijin-Hainan Hospital, Shanghai Jiao Tong University School of Medicine (Hainan Boao Research Hospital), Qionghai, Hainan, China
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3
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Yu H, Liu S, Wang S, Gu X. A narrative review of the role of HDAC6 in idiopathic pulmonary fibrosis. J Thorac Dis 2024; 16:688-695. [PMID: 38410580 PMCID: PMC10894383 DOI: 10.21037/jtd-23-1183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 11/17/2023] [Indexed: 02/28/2024]
Abstract
Background and Objective Idiopathic pulmonary fibrosis (IPF) is a progressive and irreversible condition characterized by the deposition of extracellular matrix resulting from repetitive damage to the alveolar epithelium. These injuries, along with dysregulated wound repair and fibroblast dysfunction, lead to continuous tissue remodeling and fibrosis, eventually resulting in end-stage pulmonary fibrosis. Currently, there is no specific pharmacological treatment available for IPF. The role of inflammation in the development of IPF is still a topic of debate, and it is sometimes considered incidental to fibrosis. Over the past decade, macrophages have emerged as significant contributors to the pathogenesis of fibrosis. M1 macrophages are responsible for wound healing following alveolar epithelial injury, while M2 macrophages are involved in resolving wound repair and terminating the inflammatory response in the lungs. Various studies provide evidence that M2-like macrophages contribute to the abnormal fibrogenesis. In recent years, there has been growing interest in understanding macrophage polarization and its role in the development of pulmonary fibrosis. Histone deacetylase 6 (HDAC6), a member of the HDAC family with two functional deacetylase structural domains and a ubiquitin-binding zinc finger structural domain (ZnF-BUZ), plays a crucial role in pulmonary fibrosis. This article explores the role of HDAC6 in pulmonary fibrosis and evaluates its potential as a treatment approach for IPF. Methods PubMed, Cochrane Library, China National Knowledge Infrastructure (CNKI), Wanfang, China Biomedical Literature Service System (CBMdisc) and Web of Science were searched to obtain researches, published in English and Chinese, until July 2023. The search was performed using specific keywords such as Histone deacetylase 6, HDAC6, Idiopathic pulmonary fibrosis, IPF, fibrosis. Key Content and Findings HDAC6 has diverse effects on physiological processes, including the NLRP3 inflammasome, epithelial-mesenchymal transition, the TGFβ-PI3K-AKT pathway, macrophage polarization and TGF-β-Smad signaling pathway, due to its unique structure. HDAC6 has been found to enhance the inflammatory response and fibrosis of lung tissues, contributing to the development of IPF. Conclusions In the future, HDAC6 inhibitors are expected to play a crucial role in the treatment of fibrotic disorders and should be studied further deserves to pursue in future research.
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Affiliation(s)
- Hanming Yu
- Department of Pulmonary and Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Shi Liu
- Department of Pulmonary and Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Shuo Wang
- Department of Pulmonary and Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiu Gu
- Department of Pulmonary and Critical Care Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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Peng L, Ji Y, Li Y, You Y, Zhou Y. PRDX6-iPLA2 aggravates neuroinflammation after ischemic stroke via regulating astrocytes-induced M1 microglia. Cell Commun Signal 2024; 22:76. [PMID: 38287382 PMCID: PMC10823689 DOI: 10.1186/s12964-024-01476-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/03/2024] [Indexed: 01/31/2024] Open
Abstract
The crosstalk between astrocytes and microglia plays a pivotal role in neuroinflammation following ischemic stroke, and phenotypic distribution of these cells can change with the progression of ischemic stroke. Peroxiredoxin (PRDX) 6 phospholipase A2 (iPLA2) activity is involved in the generation of reactive oxygen species(ROS), with ROS driving the activation of microglia and astrocytes; however, its exact function remains unexplored. MJ33, PRDX6D140A mutation was used to block PRDX6-iPLA2 activity in vitro and vivo after ischemic stroke. PRDX6T177A mutation was used to block the phosphorylation of PRDX6 in CTX-TNA2 cell lines. NAC, GSK2795039, Mdivi-1, U0126, and SB202190 were used to block the activity of ROS, NOX2, mitochondrial fission, ERK, and P38, respectively, in CTX-TNA2 cells. In ischemic stroke, PRDX6 is mainly expressed in astrocytes and PRDX6-iPLA2 is involved in the activation of astrocytes and microglia. In co-culture system, Asp140 mutation in PRDX6 of CTX-TNA2 inhibited the polarization of microglia, reduced the production of ROS, suppressed NOX2 activation, and inhibited the Drp1-dependent mitochondrial fission following OGD/R. These effects were further strengthened by the inhibition of ROS production. In subsequent experiments, U0126 and SB202190 inhibited the phosphorylation of PRDX6 at Thr177 and reduced PRDX6-iPLA2 activity. These results suggest that PRDX6-iPLA2 plays an important role in the astrocyte-induced generation of ROS and activation of microglia, which are regulated by the activation of Nox2 and Drp1-dependent mitochondrial fission pathways. Additionally, PRDX6-iPLA2 activity is regulated by MAPKs via the phosphorylation of PRDX6 at Thr177 in astrocytes.
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Affiliation(s)
- Li Peng
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China
- Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yanyan Ji
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China
- Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yixin Li
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yan You
- Department of Pathology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yang Zhou
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.
- Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
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Sun Y, Cai M, Liang Y, Zhang Y. Disruption of blood-brain barrier: effects of HIV Tat on brain microvascular endothelial cells and tight junction proteins. J Neurovirol 2023; 29:658-668. [PMID: 37899420 DOI: 10.1007/s13365-023-01179-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/01/2023] [Accepted: 10/12/2023] [Indexed: 10/31/2023]
Abstract
Although the widespread use of antiretroviral therapy (ART) has prolonged the life span of people living with HIV (PLWH), the incidence of HIV-associated neurocognitive disorders (HAND) in PLWH is also gradually increasing, seriously affecting the quality of life for PLWH. However, the pathogenesis of HAND has not been elucidated, which leaves HAND without effective treatment. HIV protein transactivator of transcription (Tat), as an important regulatory protein, is crucial in the pathogenesis of HAND, and its mechanism of HAND has received widespread attention. The blood-brain barrier (BBB) and its cellular component brain microvascular endothelial cells (BMVECs) play a necessary role in protecting the central nervous system (CNS), and their damage associated with Tat is a potential therapeutic target of HAND. In this review, we will study the Tat-mediated damage mechanism of the BBB and present multiple lines of evidence related to BMVEC damage caused by Tat.
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Affiliation(s)
- Yuqing Sun
- Department of Respiratory and Critical Care Medicine, Beijing You An Hospital, Capital Medical University, Beijing, 100069, China
| | - Miaotian Cai
- Department of Respiratory and Critical Care Medicine, Beijing You An Hospital, Capital Medical University, Beijing, 100069, China
| | - Ying Liang
- Department of Respiratory and Critical Care Medicine, Beijing You An Hospital, Capital Medical University, Beijing, 100069, China
| | - Yulin Zhang
- Department of Respiratory and Critical Care Medicine, Beijing You An Hospital, Capital Medical University, Beijing, 100069, China.
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Singh S, Thangaraj A, Chivero ET, Guo ML, Periyasamy P, Buch S. Role of Dysregulated Autophagy in HIV Tat, Cocaine, and cART Mediated NLRP3 Activation in Microglia. J Neuroimmune Pharmacol 2023; 18:327-347. [PMID: 37148425 PMCID: PMC10729649 DOI: 10.1007/s11481-023-10063-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 04/05/2023] [Indexed: 05/08/2023]
Abstract
Despite the ability of combination antiretroviral therapy (cART) to suppress viremia, there is persistence low levels of HIV proteins such as Transactivator of transcription (Tat) in the central nervous system (CNS), contributing to glial activation and neuroinflammation. Accumulating evidence also implicates the role of drugs of abuse in exacerbating neurological complications associated with HIV-1. The combined effects of HIV Tat, drugs of abuse, and cART can thus create a toxic milieu in the CNS. The present study investigated the combinatorial effects of HIV-Tat, cocaine, and cART on autophagy and NLRP3 inflammasome activation. We selected a combination of three commonly used cART regimens: tenofovir, emtricitabine, and dolutegravir. Our results demonstrated that exposure of mouse primary microglia (MPMs) to these agents-HIV Tat (25 ng/ml), cocaine (1 μM), and cART (1 μM each) resulted in upregulation of autophagy markers: Beclin1, LC3B-II, and SQSTM1 with impaired lysosomal functioning involving increased lysosomal pH, decreased LAMP2 and cathepsin D, ultimately leading to dysregulated autophagy. Our findings also demonstrated activation of the NLRP3 signaling in microglia exposed to these agents. We further demonstrated that gene silencing of key autophagy protein BECN1 significantly blocked NLRP3-mediated activation of microglia. Silencing of NLRP3, however, failed to block HIV Tat, cocaine, and cART-mediated dysregulation of the autophagy-lysosomal axis; these in vitro phenomena were also validated in vivo using iTat mice administered cocaine and cART. This study thus underscores the cooperative effects of HIV Tat, cocaine, and cART in exacerbating microglial activation involving dysregulated autophagy and activation of the NLRP3 inflammasome signaling.
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Affiliation(s)
- Seema Singh
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA
| | - Annadurai Thangaraj
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA
- Centre for Excellence in Nanobio Translational Research, Department of Pharmaceutical Technology, Anna University, BIT Campus, Tiruchirappalli, Tamil Nadu, India
| | - Ernest T Chivero
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA
- Department of Psychology, University of Nebraska Omaha, Omaha, NE, 68182-0001, USA
| | - Ming-Lei Guo
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA.
- Department of Pathology and Anatomy, Eastern Virginia Medical School, Norfolk, VA, 23507, USA.
| | - Palsamy Periyasamy
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA.
| | - Shilpa Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA.
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Qu M, Zhang H, Cheng P, Wubshet AK, Yin X, Wang X, Sun Y. Histone deacetylase 6's function in viral infection, innate immunity, and disease: latest advances. Front Immunol 2023; 14:1216548. [PMID: 37638049 PMCID: PMC10450946 DOI: 10.3389/fimmu.2023.1216548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/14/2023] [Indexed: 08/29/2023] Open
Abstract
In the family of histone-deacetylases, histone deacetylase 6 (HDAC6) stands out. The cytoplasmic class IIb histone deacetylase (HDAC) family is essential for many cellular functions. It plays a crucial and debatable regulatory role in innate antiviral immunity. This review summarises the current state of our understanding of HDAC6's structure and function in light of the three mechanisms by which it controls DNA and RNA virus infection: cytoskeleton regulation, host innate immune response, and autophagy degradation of host or viral proteins. In addition, we summed up how HDAC6 inhibitors are used to treat a wide range of diseases, and how its upstream signaling plays a role in the antiviral mechanism. Together, the findings of this review highlight HDAC6's importance as a new therapeutic target in antiviral immunity, innate immune response, and some diseases, all of which offer promising new avenues for the development of drugs targeting the immune response.
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Affiliation(s)
- Min Qu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Huijun Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Pengyuan Cheng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Ashenafi Kiros Wubshet
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Department of Basic and Diagnostic Sciences, College of Veterinary Science, Mekelle University, Mekelle, Tigray, Ethiopia
| | - Xiangping Yin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiangwei Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yuefeng Sun
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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Gao L, Sun W, Zhang D, Shang Y, Li L, Tao W, Zhang L, Liu H. HIV-1 subtype B Tat enhances NOTCH3 signaling in astrocytes to mediate oxidative stress, inflammatory response, and neuronal apoptosis. J Neurovirol 2023; 29:479-491. [PMID: 37358698 DOI: 10.1007/s13365-023-01151-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/02/2023] [Accepted: 06/08/2023] [Indexed: 06/27/2023]
Abstract
NOTCH receptors are relevant to multiple neurodegenerative diseases. However, the roles and mechanisms of NOTCH receptors in HIV-associated neurocognitive disorder (HAND) remain largely unclear. Transactivator of transcription (Tat) induces oxidative stress and inflammatory response in astrocytes, thereby leading to neuronal apoptosis in the central nervous system. We determined that NOTCH3 expression was upregulated during subtype B or C Tat expression in HEB astroglial cells. Moreover, bioinformatics analysis of the Gene Expression Omnibus (GEO) dataset revealed that NOTCH3 mRNA expression in the frontal cortex tissues of HIV encephalitis patients was higher than that of HIV control patients. Of note, subtype B Tat, rather than subtype C Tat, interacted with the extracellular domain of the NOTCH3 receptor, thus activating NOTCH3 signaling. Downregulation of NOTCH3 attenuated subtype B Tat-induced oxidative stress and reactive oxygen species generation. In addition, we demonstrated that NOTCH3 signaling facilitated subtype B Tat-activated NF-κB signaling pathway, thereby mediating pro-inflammatory cytokines IL-6 and TNF-α production. Furthermore, downregulation of NOTCH3 in HEB astroglial cells protected SH-SY5Y neuronal cells from astrocyte-mediated subtype B Tat neurotoxicity. Taken together, our study clarifies the potential role of NOTCH3 in subtype B Tat-induced oxidative stress and inflammatory response in astrocytes, which could be a novel therapeutic target for the relief of HAND.
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Affiliation(s)
- Lin Gao
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
| | - Weixi Sun
- Disease Prevention and Control Center of Chongchuan District, Nantong, 226000, People's Republic of China
- Health Commission of Chongchuan District, Nantong, 226000, People's Republic of China
| | - Dongmei Zhang
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
| | - Yanxing Shang
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
- Jiangsu Provincial Medical Key Discipline (Laboratory) Cultivation Unit, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Medical Key Laboratory of Molecular Immunology, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
- Nantong Municipal Key Laboratory of Metabolic Immunology and Disease Microenvironment, Medical Research Center, Nantong First People's Hospital, Nantong, 226001, People's Republic of China
| | - Li Li
- Department of Pathology, Affiliated Hospital 2 of Nantong University, and First People's Hospital of Nantong City, Nantong, 226001, People's Republic of China
| | - Wenhua Tao
- Department of Traditional Chinese Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, People's Republic of China
| | - Lei Zhang
- Nantong Health College of Jiangsu Province, Nantong, 226001, People's Republic of China.
| | - Hongbin Liu
- Department of Pathology, Affiliated Hospital 2 of Nantong University, and First People's Hospital of Nantong City, Nantong, 226001, People's Republic of China.
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Chen Y, Yu Y. Tau and neuroinflammation in Alzheimer's disease: interplay mechanisms and clinical translation. J Neuroinflammation 2023; 20:165. [PMID: 37452321 PMCID: PMC10349496 DOI: 10.1186/s12974-023-02853-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023] Open
Abstract
Alzheimer's Disease (AD) contributes to most cases of dementia. Its prominent neuropathological features are the extracellular neuritic plaques and intercellular neurofibrillary tangles composed of aggregated β-amyloid (Aβ) and hyperphosphorylated tau protein, respectively. In the past few decades, disease-modifying therapy targeting Aβ has been the focus of AD drug development. Even though it is encouraging that two of these drugs have recently received accelerated US Food and Drug Administration approval for AD treatment, their efficacy or long-term safety is controversial. Tau has received increasing attention as a potential therapeutic target, since evidence indicates that tau pathology is more associated with cognitive dysfunction. Moreover, inflammation, especially neuroinflammation, accompanies AD pathological processes and is also linked to cognitive deficits. Accumulating evidence indicates that inflammation has a complex and tight interplay with tau pathology. Here, we review recent evidence on the interaction between tau pathology, focusing on tau post-translational modification and dissemination, and neuroinflammatory responses, including glial cell activation and inflammatory signaling pathways. Then, we summarize the latest clinical trials targeting tau and neuroinflammation. Sustained and increased inflammatory responses in glial cells and neurons are pivotal cellular drivers and regulators of the exacerbation of tau pathology, which further contributes to its worsening by aggravating inflammatory responses. Unraveling the precise mechanisms underlying the relationship between tau pathology and neuroinflammation will provide new insights into the discovery and clinical translation of therapeutic targets for AD and other tau-related diseases (tauopathies). Targeting multiple pathologies and precision therapy strategies will be the crucial direction for developing drugs for AD and other tauopathies.
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Affiliation(s)
- Yijun Chen
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yang Yu
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, China.
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10
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Qiu X, Wang J, Zhang W, Duan C, Chen T, Zhang D, Su J, Gao L. Disruption of the ADAM17/NF-κB feedback loop in astrocytes ameliorates HIV-1 Tat-induced inflammatory response and neuronal death. J Neurovirol 2023; 29:283-296. [PMID: 37185939 DOI: 10.1007/s13365-023-01131-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 03/06/2023] [Accepted: 03/28/2023] [Indexed: 05/17/2023]
Abstract
A disintegrin and metalloproteinases (ADAMs) are involved in multiple neurodegenerative diseases. However, the roles and mechanisms of ADAMs in HIV-associated neurocognitive disorder (HAND) remain unclear. Transactivator of transcription (Tat) induces inflammatory response in astrocytes, thereby leading to neuronal apoptosis in the central nervous system. In this study, we determined that ADAM17 expression was upregulated during soluble Tat stimulus in HEB astroglial cells. Inhibition of ADAM17 suppressed Tat-induced pro-inflammatory cytokines production and rescued the astrocytes-derived conditioned media (ACM)-mediated SH-SY5Y neural cells apoptosis. Moreover, ADAM17 mediated Tat-triggered inflammatory response in a NF-κB-dependent manner. Conversely, Tat induced ADAM17 expression via NF-κB signaling pathway. In addition, pharmacological inhibition of NF-κB signaling inhibited Tat-induced inflammatory response, which could be rescued by overexpression of ADAM17. Taken together, our study clarifies the potential role of the ADAM17/NF-κB feedback loop in Tat-induced inflammatory response in astrocytes and the ACM-mediated neuronal death, which could be a novel therapeutic target for relief of HAND.
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Affiliation(s)
- Xiaoxia Qiu
- Nantong Health College of Jiangsu Province, Nantong, 226001, People's Republic of China
| | - Jianjun Wang
- Nantong Health College of Jiangsu Province, Nantong, 226001, People's Republic of China
| | - Wei Zhang
- Nantong Health College of Jiangsu Province, Nantong, 226001, People's Republic of China
| | - Chengwei Duan
- Medical Research Center, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Haier Lane North Road No. 6, Nantong, 226001, Jiangsu, People's Republic of China
| | - Tianpeng Chen
- Medical Research Center, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Haier Lane North Road No. 6, Nantong, 226001, Jiangsu, People's Republic of China
| | - Dongmei Zhang
- Medical Research Center, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Haier Lane North Road No. 6, Nantong, 226001, Jiangsu, People's Republic of China
| | - Jianbin Su
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Haier Lane North Road No. 6, Nantong, 226001, Jiangsu, People's Republic of China.
| | - Lin Gao
- Medical Research Center, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, Haier Lane North Road No. 6, Nantong, 226001, Jiangsu, People's Republic of China.
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11
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Puzio M, Moreton N, Sullivan M, Scaife C, Glennon JC, O'Connor JJ. An Electrophysiological and Proteomic Analysis of the Effects of the Superoxide Dismutase Mimetic, MnTMPyP, on Synaptic Signalling Post-Ischemia in Isolated Rat Hippocampal Slices. Antioxidants (Basel) 2023; 12:antiox12040792. [PMID: 37107167 PMCID: PMC10135248 DOI: 10.3390/antiox12040792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 04/29/2023] Open
Abstract
Metabolic stress and the increased production of reactive oxygen species (ROS) are two main contributors to neuronal damage and synaptic plasticity in acute ischemic stroke. The superoxide scavenger MnTMPyP has been previously reported to have a neuroprotective effect in organotypic hippocampal slices and to modulate synaptic transmission after in vitro hypoxia and oxygen-glucose deprivation (OGD). However, the mechanisms involved in the effect of this scavenger remain elusive. In this study, two concentrations of MnTMPyP were evaluated on synaptic transmission during ischemia and post-ischemic synaptic potentiation. The complex molecular changes supporting cellular adaptation to metabolic stress, and how these are modulated by MnTMPyP, were also investigated. Electrophysiological data showed that MnTMPyP causes a decrease in baseline synaptic transmission and impairment of synaptic potentiation. Proteomic analysis performed on MnTMPyP and hypoxia-treated tissue indicated an impairment in vesicular trafficking mechanisms, including reduced expression of Hsp90 and actin signalling. Alterations of vesicular trafficking may lead to reduced probability of neurotransmitter release and AMPA receptor activity, resulting in the observed modulatory effect of MnTMPyP. In OGD, protein enrichment analysis highlighted impairments in cell proliferation and differentiation, such as TGFβ1 and CDKN1B signalling, in addition to downregulation of mitochondrial dysfunction and an increased expression of CAMKII. Taken together, our results may indicate modulation of neuronal sensitivity to the ischemic insult, and a complex role for MnTMPyP in synaptic transmission and plasticity, potentially providing molecular insights into the mechanisms mediating the effects of MnTMPyP during ischemia.
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Affiliation(s)
- Martina Puzio
- UCD School of Biomolecular & Biomedical Science, University College Dublin, Dublin 4, Ireland
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
| | - Niamh Moreton
- UCD School of Biomolecular & Biomedical Science, University College Dublin, Dublin 4, Ireland
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
| | - Mairéad Sullivan
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
- UCD School of Medicine, University College Dublin, Dublin 4, Ireland
| | - Caitriona Scaife
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
| | - Jeffrey C Glennon
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
- UCD School of Medicine, University College Dublin, Dublin 4, Ireland
| | - John J O'Connor
- UCD School of Biomolecular & Biomedical Science, University College Dublin, Dublin 4, Ireland
- Mass Spectrometry Core Facility, UCD Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin 4, Ireland
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12
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Xue Y, Gan B, Zhou Y, Wang T, Zhu T, Peng X, Zhang X, Zhou Y. Advances in the Mechanistic Study of the Control of Oxidative Stress Injury by Modulating HDAC6 Activity. Cell Biochem Biophys 2023; 81:127-139. [PMID: 36749475 PMCID: PMC9925596 DOI: 10.1007/s12013-022-01125-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/14/2022] [Indexed: 02/08/2023]
Abstract
Oxidative stress is defined as an injury resulting from a disturbance in the dynamic equilibrium of the redox environment due to the overproduction of active/radical oxygen exceeding the antioxidative ability of the body. This is a key step in the development of various diseases. Oxidative stress is modulated by different factors and events, including the modification of histones, which are the cores of nucleosomes. Histone modification includes acetylation and deacetylation of certain amino acid residues; this process is catalyzed by different enzymes. Histone deacetylase 6 (HDAC6) is a unique deacetylating protease that also catalyzes the deacetylation of different nonhistone substrates to regulate various physiologic processes. The intimate relationship between HDAC6 and oxidative stress has been demonstrated by different studies. The present paper aims to summarize the data obtained from a mechanistic study of HDAC6 and oxidative stress to guide further investigations on mechanistic characterization and drug development.
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Affiliation(s)
- Yuanye Xue
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Bing Gan
- grid.410560.60000 0004 1760 3078The Third Affiliated Hospital of Guangdong Medical University, Fo Shan, 528000 Guangdong China
| | - Yanxing Zhou
- grid.410560.60000 0004 1760 3078School of Medical Technology, Guangdong Medical University, Dongguan, 523808 China
| | - Tingyu Wang
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Tong Zhu
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Xinsheng Peng
- Biomedical Innovation Center, Guangdong Medical University, Dongguan, 523808, China. .,Institute of Marine Medicine, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Xiangning Zhang
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
| | - Yanfang Zhou
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
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13
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Zhang S, Meng Y, Zhou L, Qiu L, Wang H, Su D, Zhang B, Chan K, Han J. Targeting epigenetic regulators for inflammation: Mechanisms and intervention therapy. MedComm (Beijing) 2022; 3:e173. [PMID: 36176733 PMCID: PMC9477794 DOI: 10.1002/mco2.173] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/11/2022] Open
Abstract
Emerging evidence indicates that resolution of inflammation is a critical and dynamic endogenous process for host tissues defending against external invasive pathogens or internal tissue injury. It has long been known that autoimmune diseases and chronic inflammatory disorders are characterized by dysregulated immune responses, leading to excessive and uncontrol tissue inflammation. The dysregulation of epigenetic alterations including DNA methylation, posttranslational modifications to histone proteins, and noncoding RNA expression has been implicated in a host of inflammatory disorders and the immune system. The inflammatory response is considered as a critical trigger of epigenetic alterations that in turn intercede inflammatory actions. Thus, understanding the molecular mechanism that dictates the outcome of targeting epigenetic regulators for inflammatory disease is required for inflammation resolution. In this article, we elucidate the critical role of the nuclear factor‐κB signaling pathway, JAK/STAT signaling pathway, and the NLRP3 inflammasome in chronic inflammatory diseases. And we formulate the relationship between inflammation, coronavirus disease 2019, and human cancers. Additionally, we review the mechanism of epigenetic modifications involved in inflammation and innate immune cells. All that matters is that we propose and discuss the rejuvenation potential of interventions that target epigenetic regulators and regulatory mechanisms for chronic inflammation‐associated diseases to improve therapeutic outcomes.
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Affiliation(s)
- Su Zhang
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Yang Meng
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Lian Zhou
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Lei Qiu
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Heping Wang
- Department of Neurosurgery Tongji Hospital of Tongji Medical College Huazhong University of Science and Technology Wuhan China
| | - Dan Su
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Bo Zhang
- Laboratory of Cancer Epigenetics and Genomics Department of Gastrointestinal Surgery Frontiers Science Center for Disease‐Related Molecular Network West China Hospital Sichuan University Chengdu China
| | - Kui‐Ming Chan
- Department of Biomedical Sciences City University of Hong Kong Hong Kong China
| | - Junhong Han
- Laboratory of Cancer Epigenetics and Genomics Frontiers Science Center for Disease‐Related Molecular Network State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
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14
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Brandt M, Dörschmann H, Khraisat S, Knopp T, Ringen J, Kalinovic S, Garlapati V, Siemer S, Molitor M, Göbel S, Stauber R, Karbach SH, Münzel T, Daiber A, Wenzel P. Telomere Shortening in Hypertensive Heart Disease Depends on Oxidative DNA Damage and Predicts Impaired Recovery of Cardiac Function in Heart Failure. Hypertension 2022; 79:2173-2184. [PMID: 35862118 DOI: 10.1161/hypertensionaha.121.18935] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Heart failure (HF) coincides with cardiomyocyte telomere shortening. Arterial hypertension is the most prominent risk factor for HF. Both HF and arterial hypertension are associated with dysregulation of the neurohormonal axis. How neurohormonal activation is linked to telomere shortening in the pathogenesis of HF is incompletely understood. METHODS Cardiomyocyte telomere length was assessed in a mouse model of hypertensive HF induced by excess neurohormonal activation (AngII [angiotensin II] infusion, high salt diet, and uninephrectomy), in AngII-stimulated cardiomyocytes and in endomyocardial biopsies from patients with HF. Superoxide production, expression of NOX2 (NADPH oxidase 2) and PRDX1 (peroxiredoxin 1) and HDAC6 (histone deacetylase 6) activity were assessed. RESULTS Telomere shortening occurred in vitro and in vivo, correlating with both left ventricular (LV) dilatation and LV systolic function impairment. Telomere shortening coincided with increased superoxide production, increased NOX2 expression, increased HDAC6 activity, loss of the telomere-specific antioxidant PRDX1, and increased oxidative DNA-damage. NOX2 knockout prevented PRDX1 depletion, DNA-damage and telomere shortening confirming this enzyme as a critical source of reactive oxygen species. Cotreatment with the NOX inhibitor apocynin ameliorated hypertensive HF and telomere shortening. Similarly, treatment with the HDAC6 inhibitor tubastatin A, which increases PRDX1 bioavailability, prevented telomere shortening in adult cardiomyocytes. To explore the clinical relevance of our findings, we examined endomyocardial biopsies from an all-comer population of patients with HF with reduced ejection fraction. Here, cardiomyocyte telomere length predicted the recovery of cardiac function. CONCLUSIONS Cardiomyocyte telomere shortening and oxidative damage in heart failure with reduced ejection fraction induced by excess neurohormonal activation depends on NOX2-derived superoxide and may help to stratify HF therapy.
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Affiliation(s)
- Moritz Brandt
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Hendrik Dörschmann
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Sana'a Khraisat
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Tanja Knopp
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Julia Ringen
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Sanela Kalinovic
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Venkata Garlapati
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Svenja Siemer
- Department of Otolaryngology, Head and Neck Surgery, University Medical Center Mainz' Mainz' Germany (S.S., R.S.)
| | - Michael Molitor
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Sebastian Göbel
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Roland Stauber
- Department of Otolaryngology, Head and Neck Surgery, University Medical Center Mainz' Mainz' Germany (S.S., R.S.)
| | - Susanne Helena Karbach
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Thomas Münzel
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Andreas Daiber
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.)
| | - Philip Wenzel
- Department of Cardiology' University Medical Center Mainz' Mainz' Germany (M.B., H.D., S.K., T.K., J.R., S.K., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Center for Thrombosis and Hemostasis' University Medical Center Mainz' Mainz' Germany (M.B., H.D., T.K., J.R., V.G., M.M., S.H.K., T.M., A.D., P.W.).,German Center for Cardiovascular Research (DZHK) - Partner site Rhine-Main (M.B., T.K., J.R., V.G., M.M., S.G., S.H.K., T.M., A.D., P.W.).,Department of Biochemistry, Cardiovascular Research Institute Maastricht School for Cardiovascular Diseases (CARIM), Maastricht University, Maastricht, the Netherlands (P.W.)
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15
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Zhang J, Ma J, Trinh RT, Heijnen CJ, Kavelaars A. An HDAC6 inhibitor reverses chemotherapy-induced mechanical hypersensitivity via an IL-10 and macrophage dependent pathway. Brain Behav Immun 2022; 100:287-296. [PMID: 34915156 PMCID: PMC8766942 DOI: 10.1016/j.bbi.2021.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/30/2021] [Accepted: 12/09/2021] [Indexed: 02/06/2023] Open
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) impacts a growing number of cancer survivors and treatment options are limited. Histone deacetylase 6 (HDAC6) inhibitors are attractive candidates because they reverse established CIPN and may enhance anti-tumor effects of chemotherapy. Before considering clinical application of HDAC6 inhibitors, the mechanisms underlying reversal of CIPN need to be identified. We showed previously that deletion of Hdac6 from sensory neurons did not prevent cisplatin-induced mechanical hypersensitivity, while global deletion of Hdac6 was protective, indicating involvement of HDAC6 in other cell types. Here we show that local depletion of MRC1 (CD206)-positive macrophages without affecting microglia by intrathecal administration of mannosylated clodronate liposomes reduced the capacity of an HDAC6 inhibitor to reverse cisplatin-induced mechanical hypersensitivity. The HDAC6 inhibitor increased spinal cord Il10 mRNA and this was M2-macrophage dependent. Intrathecal administration of anti-IL-10 antibody or genetic deletion of Il10 prevented resolution of mechanical hypersensitivity. Genetic deletion of the IL-10 receptor from Advillin+ neurons prevented resolution of mechanical hypersensitivity in mice treated with the HDAC6 inhibitor. These findings indicate that treatment with an HDAC6 inhibitor increases macrophage-derived IL-10 signaling to IL-10 receptors on Advillin+ sensory neurons to resolve mechanical hypersensitivity. Cisplatin decreases mitochondrial function in sensory axons, and HDAC6 inhibition can promote axonal transport of healthy mitochondria. Indeed, the HDAC6 inhibitor normalized cisplatin-induced tibial nerve mitochondrial deficits. However, this was independent of macrophages and IL-10 signaling. In conclusion, our findings indicate that administration of an HDAC6 inhibitor reverses cisplatin-induced mechanical hypersensitivity through two complementary pathways: macrophage HDAC6 inhibition to promote IL-10 production and IL-10 signaling to DRG neurons, and neuronal HDAC6 inhibition to restore axonal mitochondrial health.
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Affiliation(s)
| | | | | | | | - Annemieke Kavelaars
- Laboratories of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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16
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Chang P, Li H, Hu H, Li Y, Wang T. The Role of HDAC6 in Autophagy and NLRP3 Inflammasome. Front Immunol 2021; 12:763831. [PMID: 34777380 PMCID: PMC8578992 DOI: 10.3389/fimmu.2021.763831] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/28/2021] [Indexed: 12/12/2022] Open
Abstract
Autophagy fights against harmful stimuli and degrades cytosolic macromolecules, organelles, and intracellular pathogens. Autophagy dysfunction is associated with many diseases, including infectious and inflammatory diseases. Recent studies have identified the critical role of the NACHT, LRR, and PYD domain-containing protein 3 (NLRP3) inflammasomes activation in the innate immune system, which mediates the secretion of proinflammatory cytokines IL-1β/IL-18 and cleaves Gasdermin D to induce pyroptosis in response to pathogenic and sterile stimuli. Accumulating evidence has highlighted the crosstalk between autophagy and NLRP3 inflammasome in multifaceted ways to influence host defense and inflammation. However, the underlying mechanisms require further clarification. Histone deacetylase 6 (HDAC6) is a class IIb deacetylase among the 18 mammalian HDACs, which mainly localizes in the cytoplasm. It is involved in two functional deacetylase domains and a ubiquitin-binding zinc finger domain (ZnF-BUZ). Due to its unique structure, HDAC6 regulates various physiological processes, including autophagy and NLRP3 inflammasome, and may play a role in the crosstalk between them. In this review, we provide insight into the mechanisms by which HDAC6 regulates autophagy and NLRP3 inflammasome and we explored the possibility and challenges of HDAC6 in the crosstalk between autophagy and NLRP3 inflammasome. Finally, we discuss HDAC6 inhibitors as a potential therapeutic approach targeting either autophagy or NLRP3 inflammasome as an anti-inflammatory strategy, although further clarification is required regarding their crosstalk.
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Affiliation(s)
- Panpan Chang
- Trauma Medicine Center, Peking University People's Hospital, Key Laboratory of Trauma and Neural Regeneration (Peking University), National Center for Trauma Medicine of China, Beijing, China
| | - Hao Li
- Department of Emergency, First Hospital of China Medical University, Shenyang, China
| | - Hui Hu
- Department of Traumatology, Central Hospital of Chongqing University, Chongqing Emergency Medical Center, Chongqing, China
| | - Yongqing Li
- Department of Surgery, University of Michigan, Ann Arbor, MI, United States
| | - Tianbing Wang
- Trauma Medicine Center, Peking University People's Hospital, Key Laboratory of Trauma and Neural Regeneration (Peking University), National Center for Trauma Medicine of China, Beijing, China
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17
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Chronic Exposure to HIV-Derived Protein Tat Impairs Endothelial Function via Indirect Alteration in Fat Mass and Nox1-Mediated Mechanisms in Mice. Int J Mol Sci 2021; 22:ijms222010977. [PMID: 34681637 PMCID: PMC8540571 DOI: 10.3390/ijms222010977] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/03/2021] [Accepted: 10/07/2021] [Indexed: 12/15/2022] Open
Abstract
People living with human immunodeficiency virus (HIV) (PLWH) have increased risk for atherosclerosis-related cardiovascular disease (CVD), the main cause of death in this population. Notwithstanding, the mechanisms of HIV-associated vascular pathogenesis are not fully elucidated. Therefore, we sought to determine whether HIV-regulatory protein Tat mediates HIV-induced endothelial dysfunction via NADPH oxidase 1 (Nox1)-dependent mechanisms. Body weight, fat mass, leptin levels, expression of reactive oxygen species (ROS)-producing enzymes and vascular function were assessed in C57BL/6 male mice treated with Tat for 3 days and 4 weeks. Aortic rings and human endothelial cells were also treated with Tat for 2–24 h in ex vivo and in vitro settings. Chronic (4 weeks) but not acute (3 days and 2–24 h) treatment with Tat decreased body weight, fat mass, and leptin levels and increased the expression of Nox1 and its coactivator NADPH oxidase Activator 1 (NoxA1). This was associated with impaired endothelium-dependent vasorelaxation. Importantly, specific inhibition of Nox1 with GKT771 and chronic leptin infusion restored endothelial function in Tat-treated mice. These data rule out direct effects of HIV-Tat on endothelial function and imply the contribution of reductions in adipose mass and leptin production which likely explain upregulated expression of Nox1 and NoxA1. The Nox1 and leptin system may provide potential targets to improve vascular function in HIV infection-associated CVD.
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Dai Y, Wei T, Shen Z, Bei Y, Lin H, Dai H. Classical HDACs in the regulation of neuroinflammation. Neurochem Int 2021; 150:105182. [PMID: 34509559 DOI: 10.1016/j.neuint.2021.105182] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 08/22/2021] [Accepted: 09/07/2021] [Indexed: 12/15/2022]
Abstract
Neuroinflammation is a key factor of the pathology of various neurological diseases (brain injury, depression, neurodegenerative diseases). It is a complex and orderly process that relies on various types of glial cells and peripheral immune cells. Inhibition of neuroinflammation can reduce the severity of neurological diseases. The initiation, progression, and termination of inflammation require gene activation, epigenetic modification, transcriptional translation, and post-translational regulation, all of which are tightly regulated by different enzymes. Epigenetics refers to the regulation of epigenetic gene expression by epigenetic changes (DNA methylation, histone modification, and non-coding RNAs such as miRNA) that are not dependent on changes in gene sequence and are heritable. Histone deacetylases (HDACs) are a group of important enzymes that regulate epigenetics. They can remove the acetyl group on the lysine ϵ-amino group of the target protein, thereby affecting gene transcription or altering protein activity. HDACs are involved in the regulation of immunity and inflammation. HDAC inhibitor (HDACi) has also become a new hotspot in the research of anti-inflammatory drugs. Therefore, the aim of the current review is to discuss and summarize the role and mechanism of different HDACs in neuroinflammation and the corresponding role of HDACi in neurological diseases, and to providing new ideas for future research on neuroinflammation-related diseases and drug development.
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Affiliation(s)
- Yunjian Dai
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Taofeng Wei
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Zexu Shen
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Yun Bei
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Haoran Lin
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Haibin Dai
- Department of Pharmacy, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
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19
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Marino J, Maubert ME, Mele AR, Spector C, Wigdahl B, Nonnemacher MR. Functional impact of HIV-1 Tat on cells of the CNS and its role in HAND. Cell Mol Life Sci 2020; 77:5079-5099. [PMID: 32577796 PMCID: PMC7674201 DOI: 10.1007/s00018-020-03561-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/08/2020] [Accepted: 05/25/2020] [Indexed: 02/07/2023]
Abstract
Human immunodeficiency virus type 1 (HIV-1) transactivator of transcription (Tat) is a potent mediator involved in the development of HIV-1-associated neurocognitive disorders (HAND). Tat is expressed even in the presence of antiretroviral therapy (ART) and is able to enter the central nervous system (CNS) through a variety of ways, where Tat can interact with microglia, astrocytes, brain microvascular endothelial cells, and neurons. The presence of low concentrations of extracellular Tat alone has been shown to lead to dysregulated gene expression, chronic cell activation, inflammation, neurotoxicity, and structural damage in the brain. The reported effects of Tat are dependent in part on the specific HIV-1 subtype and amino acid length of Tat used. HIV-1 subtype B Tat is the most common subtype in North American and therefore, most studies have been focused on subtype B Tat; however, studies have shown many genetic, biologic, and pathologic differences between HIV subtype B and subtype C Tat. This review will focus primarily on subtype B Tat where the full-length protein is 101 amino acids, but will also consider variants of Tat, such as Tat 72 and Tat 86, that have been reported to exhibit a number of distinctive activities with respect to mediating CNS damage and neurotoxicity.
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Affiliation(s)
- Jamie Marino
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Monique E Maubert
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Anthony R Mele
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Cassandra Spector
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Brian Wigdahl
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael R Nonnemacher
- Department of Microbiology and Immunology, Drexel University College of Medicine, 245 N. 15th St, Philadelphia, PA, 19102, USA.
- Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, USA.
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20
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Ha N, Choi YI, Jung N, Song JY, Bae DK, Kim MC, Lee YJ, Song H, Kwak G, Jeong S, Park S, Nam SH, Jung S, Choi B. A novel histone deacetylase 6 inhibitor improves myelination of Schwann cells in a model of Charcot-Marie-Tooth disease type 1A. Br J Pharmacol 2020; 177:5096-5113. [PMID: 33460073 PMCID: PMC7589015 DOI: 10.1111/bph.15231] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 07/22/2020] [Accepted: 07/25/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Charcot-Marie-Tooth (CMT) disease is the most common hereditary peripheral neuropathy. CMT type 1A (CMT1A) accounts for approximately 50% of CMT patients and is linked to PMP22 gene duplication. Histone deacetylase-6 (HDAC6) has pleiotropic effects, such as regulating lipid homeostasis and cellular stress. Although HDAC6 has been regarded as a promising drug target for neurodegenerative diseases, its inhibition has not yet been tested in CMT1A. Here we have tested the therapeutic potential of CKD-504, a clinical stage HDAC6 inhibitor, in a mouse model of CMT1A EXPERIMENTAL APPROACH: The potency and selectivity of CKD-504 was evaluated, using a HDAC enzyme panel assay and western blots. The therapeutic potential of CKD-504 was evaluated using behavioural testing and electrophysiological assessments in the C22 mouse model of CMT1A. PMP22 protein expression and aggregation were analysed in mesenchymal stem cell-derived Schwann cells from CMT1A patients and sciatic nerves from C22 mice. KEY RESULTS The HDAC6 inhibitor, CKD-504, modulated molecular chaperon proteins such as HSP90 and HSP70, which are involved in the folding/refolding of proteins such as PMP22. CKD-504 treatment restored myelination in both mesenchymal stem cell-derived Schwann cells from CMT1A patients and sciatic nerves of C22 mice and improved the axonal integrity of the sciatic nerve, leading to behavioural, electrophysiological, and histological improvements in C22 mice. CONCLUSION AND IMPLICATIONS A novel HDAC6 inhibitor, CKD-504, has potent therapeutic efficacy for CMT1A.
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Affiliation(s)
- Nina Ha
- Department of Health Sciences and Technology, SAIHSTSungkyunkwan UniversitySeoulRepublic of Korea
- CKD Research InstituteYonginRepublic of Korea
| | | | - Namhee Jung
- Department of Biochemistry, College of MedicineEwha Womans UniversitySeoulRepublic of Korea
| | | | | | | | | | | | - Geon Kwak
- Department of Health Sciences and Technology, SAIHSTSungkyunkwan UniversitySeoulRepublic of Korea
| | - Soyeon Jeong
- Department of Biochemistry, College of MedicineEwha Womans UniversitySeoulRepublic of Korea
| | - Saeyoung Park
- Department of Biochemistry, College of MedicineEwha Womans UniversitySeoulRepublic of Korea
| | - Soo Hyun Nam
- Department of Neurology, Samsung Medical CenterSungkyunkwan University School of MedicineSeoulRepublic of Korea
| | - Sung‐Chul Jung
- Department of Biochemistry, College of MedicineEwha Womans UniversitySeoulRepublic of Korea
| | - Byung‐Ok Choi
- Department of Health Sciences and Technology, SAIHSTSungkyunkwan UniversitySeoulRepublic of Korea
- Department of Neurology, Samsung Medical CenterSungkyunkwan University School of MedicineSeoulRepublic of Korea
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21
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Opioid-Mediated HIV-1 Immunopathogenesis. J Neuroimmune Pharmacol 2020; 15:628-642. [PMID: 33029670 DOI: 10.1007/s11481-020-09960-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023]
Abstract
Despite the ability of combination antiretroviral therapy to dramatically suppress viremia, the brain continues to be a reservoir of HIV-1 low-level replication. Adding further complexity to this is the comorbidity of drug abuse with HIV-1 associated neurocognitive disorders and neuroHIV. Among several abused drugs, the use of opiates is highly prevalent in HIV-1 infected individuals, both as an abused drug as well as for pain management. Opioids and their receptors have attained notable attention owing to their ability to modulate immune functions, in turn, impacting disease progression. Various cell culture, animal and human studies have implicated the role of opioids and their receptors in modulating viral replication and virus-mediated pathology both positively and negatively. Further, the combinatorial effects of HIV-1/HIV-1 proteins and morphine have demonstrated activation of inflammatory signaling in the host system. Herein, we summarized the current knowledge on the role of opioids on peripheral immunopathogenesis, viral immunopathogenesis, epigenetic profiles of the host and viral genome, neuropathogenesis of SIV/SHIV-infected non-human primates, blood-brain-barrier, HIV-1 viral latency, and viral rebound. Overall, this review provides recent insights into the role of opioids in HIV-1 immunopathogenesis. Graphical abstract.
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22
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Marino J, Wigdahl B, Nonnemacher MR. Extracellular HIV-1 Tat Mediates Increased Glutamate in the CNS Leading to Onset of Senescence and Progression of HAND. Front Aging Neurosci 2020; 12:168. [PMID: 32581774 PMCID: PMC7295946 DOI: 10.3389/fnagi.2020.00168] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
Human immunodeficiency virus type 1 (HIV-1)- associated neurocognitive disorders (HAND) is a disease of neurologic impairment that involves mechanisms of damage similar to other degenerative neurologic diseases such as Alzheimer’s disease (AD). In the current era of antiretroviral therapy (ART), HIV-1 replication is well-suppressed, and yet, HIV-1-infected patients still have high levels of chronic inflammation, indicating that factors other than viral replication are contributing to the development of neurocognitive impairment in these patients. The underlying mechanisms of HAND are still unknown, but the HIV-1 protein, Tat, has been highlighted as a potential viral product that contributes to the development of cognitive impairment. In AD, the presence of senescent cells in the CNS has been discussed as a contributing factor to the progression of cognitive decline and may be a mechanism also involved in the development of HAND. This mini-review discusses the viral protein HIV-1 Tat, and its potential to induce senescence in the CNS, contributing to the development of HAND.
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Affiliation(s)
- Jamie Marino
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States.,Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Brian Wigdahl
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States.,Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States.,Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, United States
| | - Michael R Nonnemacher
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States.,Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States.,Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, United States
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23
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Lee JW, Lee SM, Chun J, Im JP, Seo SK, Ha N, Il Choi Y, Kim JS. Novel Histone Deacetylase 6 Inhibitor CKD-506 Inhibits NF-κB Signaling in Intestinal Epithelial Cells and Macrophages and Ameliorates Acute and Chronic Murine Colitis. Inflamm Bowel Dis 2020; 26:852-862. [PMID: 31895948 DOI: 10.1093/ibd/izz317] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Selective blocking of HDAC6 has become a promising strategy in treating inflammatory bowel disease. CKD-506 is a novel isoform-selective inhibitor of histone deacetylase 6. The present study was performed to evaluate the effect of CKD-506 on the NF-κB signaling pathway in intestinal epithelial cells (IECs) and macrophages and on murine models of acute and chronic colitis. METHODS RAW264RAW264.7 murine macrophages and COLO 205 human IECs were pretreated with CKD-506 and then stimulated with lipopolysaccharides (LPS). Cytokine expression of TNF-α, interleukin (IL)-6, IL-8, and IL-10 was measured by ELISA. The effect of CKD-506 on NF-κB signaling was evaluated by Western blotting of IκBα phosphorylation/degradation and electrophoretic mobility shift assay. In vivo studies were performed using a dextran sulfate sodium (DSS)-induced acute colitis model, a chronic colitis model in IL-10 knockout mice, and an adoptive transfer model. Colitis was quantified by the disease activity index, colon length, and histopathologic evaluation. RESULTS CKD-506 suppressed the expression of pro-inflammatory cytokines such as IL-6, IL-8, and TNF-α in IECs and macrophages. CKD-506 strongly inhibited IκBα phosphorylation/degradation and the DNA-binding activity of NF-κB. Oral administration of CKD-506 attenuated DSS-induced acute colitis and chronic colitis in IL-10-/- and adoptive transfer models. CKD-506 ameliorated weight loss, disease activity, and histopathologic score in colitis mice and downregulated IκBα phosphorylation and pro-inflammatory cytokine production significantly. CONCLUSIONS CKD-506 blocked NF-κB signaling in IECs and macrophages and ameliorated experimental acute and chronic murine colitis models, which suggests that CKD-506 is a promising candidate for inflammatory bowel disease treatment as a small molecular medicine.
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Affiliation(s)
- Jung Won Lee
- Department of Internal Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Soung-Min Lee
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan, Republic of Korea
| | - Jaeyoung Chun
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Pil Im
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Su-Kil Seo
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan, Republic of Korea
| | - Nina Ha
- Department of Pharmacology, CKD Research Institute, CKD Pharmaceutical Co, Yongin, Republic of Korea
| | - Young Il Choi
- Department of Pharmacology, CKD Research Institute, CKD Pharmaceutical Co, Yongin, Republic of Korea
| | - Joo Sung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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24
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Munoz FM, Patel PA, Gao X, Mei Y, Xia J, Gilels S, Hu H. Reactive oxygen species play a role in P2X7 receptor-mediated IL-6 production in spinal astrocytes. Purinergic Signal 2020; 16:97-107. [PMID: 32146607 DOI: 10.1007/s11302-020-09691-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 02/11/2020] [Indexed: 01/29/2023] Open
Abstract
Astrocytes mediate a remarkable variety of cellular functions, including gliotransmitter release. Under pathological conditions, high concentrations of the purinergic receptor agonist adenosine triphosphate (ATP) are released into the extracellular space leading to the activation of the purinergic P2X7 receptor, which in turn can initiate signaling cascades. It is well-established that reactive oxygen species (ROS) increase in macrophages and microglia following P2X7 receptor activation. However, direct evidence that activation of P2X7 receptor leads to ROS production in astrocytes is lacking to date. While it is known that P2X7R activation induces cytokine production, the mechanism involved in this process is unclear. In the present study, we demonstrated that P2X7 receptor activation induced ROS production in spinal astrocytes in a concentration-dependent manner. We also found that P2X7R-mediated ROS production is at least partially through NADPH oxidase. In addition, our ELISA data show that P2X7R-induced IL-6 release was dependent on NADPH oxidase-mediated production of ROS. Collectively, these results reveal that activation of the P2X7 receptor on spinal astrocytes increases ROS production through NADPH oxidase, subsequently leading to IL-6 release. Our results reveal a role of ROS in the P2X7 signaling pathway in mouse spinal cord astrocytes and may indicate a potential mechanism for the astrocytic P2X7 receptor in chronic pain.
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Affiliation(s)
- Frances M Munoz
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Priya A Patel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Xinghua Gao
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - Yixiao Mei
- Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA
| | - Jingsheng Xia
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Sofia Gilels
- Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA
| | - Huijuan Hu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA. .,Department of Anesthesiology, Rutgers New Jersey Medical School, 185 S. Orange Ave., Newark, NJ, 07103, USA.
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25
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Ren J, Catalina MD, Eden K, Liao X, Read KA, Luo X, McMillan RP, Hulver MW, Jarpe M, Bachali P, Grammer AC, Lipsky PE, Reilly CM. Selective Histone Deacetylase 6 Inhibition Normalizes B Cell Activation and Germinal Center Formation in a Model of Systemic Lupus Erythematosus. Front Immunol 2019; 10:2512. [PMID: 31708928 PMCID: PMC6823248 DOI: 10.3389/fimmu.2019.02512] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 10/08/2019] [Indexed: 01/25/2023] Open
Abstract
Autoantibody production by plasma cells (PCs) plays a pivotal role in the pathogenesis of systemic lupus erythematosus (SLE). The molecular pathways by which B cells become pathogenic PC secreting autoantibodies in SLE are incompletely characterized. Histone deactylase 6 (HDAC6) is a unique cytoplasmic HDAC that modifies the interaction of a number of tubulin- associated proteins; inhibition of HDAC6 has been shown to be beneficial in murine models of SLE, but the downstream pathways accounting for the therapeutic benefit have not been clearly delineated. In the current study, we sought to determine whether selective HDAC6 inhibition would abrogate abnormal B cell activation in SLE. We treated NZB/W lupus mice with the selective HDAC6 inhibitor, ACY-738, for 4 weeks beginning at 20 weeks-of age. After only 4 weeks of treatment, manifestation of lupus nephritis (LN) were greatly reduced in these animals. We then used RNAseq to determine the genomic signatures of splenocytes from treated and untreated mice and applied computational cellular and pathway analysis to reveal multiple signaling events associated with B cell activation and differentiation in SLE that were modulated by HDAC6 inhibition. PC development was abrogated and germinal center (GC) formation was greatly reduced. When the HDAC6 inhibitor-treated lupus mouse gene signatures were compared to human lupus patient gene signatures, the results showed numerous immune, and inflammatory pathways increased in active human lupus were significantly decreased in the HDAC6 inhibitor treated animals. Pathway analysis suggested alterations in cellular metabolism might contribute to the normalization of lupus mouse spleen genomic signatures, and this was confirmed by direct measurement of the impact of the HDAC6 inhibitor on metabolic activities of murine spleen cells. Taken together, these studies show HDAC6 inhibition decreases B cell activation signaling pathways and reduces PC differentiation in SLE and suggest that a critical event might be modulation of cellular metabolism.
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Affiliation(s)
- Jingjing Ren
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Michelle D Catalina
- AMPEL BioSolutions, Charlottesville, VA, United States.,RILITE Research Institute, Charlottesville, VA, United States
| | - Kristin Eden
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Xiaofeng Liao
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Kaitlin A Read
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States.,Virginia Tech Carilion Research Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Xin Luo
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Ryan P McMillan
- Department of Human Nutrition, Foods, and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Matthew W Hulver
- Department of Human Nutrition, Foods, and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Matthew Jarpe
- Regenacy Pharmaceuticals, Waltham, MA, United States
| | | | - Amrie C Grammer
- AMPEL BioSolutions, Charlottesville, VA, United States.,RILITE Research Institute, Charlottesville, VA, United States
| | - Peter E Lipsky
- AMPEL BioSolutions, Charlottesville, VA, United States.,RILITE Research Institute, Charlottesville, VA, United States
| | - Christopher M Reilly
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States.,Edward Via College of Osteopathic Medicine, Blacksburg, VA, United States
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26
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Wenzel ED, Speidell A, Flowers SA, Wu C, Avdoshina V, Mocchetti I. Histone deacetylase 6 inhibition rescues axonal transport impairments and prevents the neurotoxicity of HIV-1 envelope protein gp120. Cell Death Dis 2019; 10:674. [PMID: 31515470 PMCID: PMC6742654 DOI: 10.1038/s41419-019-1920-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/25/2019] [Accepted: 08/12/2019] [Indexed: 02/06/2023]
Abstract
Despite successful antiretroviral drug therapy, a subset of human immunodeficiency virus-1 (HIV)-positive individuals still display synaptodendritic simplifications and functional cognitive impairments referred to as HIV-associated neurocognitive disorders (HANDs). The neurological damage observed in HAND subjects can be experimentally reproduced by the HIV envelope protein gp120. However, the complete mechanism of gp120-mediated neurotoxicity is not entirely understood. Gp120 binds to neuronal microtubules and decreases the level of tubulin acetylation, suggesting that it may impair axonal transport. In this study, we utilized molecular and pharmacological approaches, in addition to microscopy, to examine the relationship between gp120-mediated tubulin deacetylation, axonal transport, and neuronal loss. Using primary rat cortical neurons, we show that gp120 decreases acetylation of tubulin and increases histone deacetylase 6 (HDAC6), a cytoplasmic enzyme that regulates tubulin deacetylation. We also demonstrate that the selective HDAC6 inhibitors tubacin and ACY-1215, which prevented gp120-mediated deacetylation of tubulin, inhibited the ability of gp120 to promote neurite shortening and cell death. We further observed by co-immunoprecipitation and confirmed with mass spectroscopy that exposure of neurons to gp120 decreases the association between tubulin and motor proteins, a well-established consequence of tubulin deacetylation. To assess the physiological consequences of this effect, we examined the axonal transport of brain-derived neurotrophic factor (BDNF). We report that gp120 decreases the velocity of BDNF transport, which was restored to baseline levels when neurons were exposed to HDAC6 inhibitors. Overall, our data suggest that gp120-mediated tubulin deacetylation causes impairment of axonal transport through alterations to the microtubule cytoskeleton.
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Affiliation(s)
- Erin D Wenzel
- Department of Pharmacology and Physiology, Washington, DC, 20057, USA
| | - Andrew Speidell
- Department of Neuroscience, Georgetown University Medical Center, 3970 Reservoir Road NW, Washington, DC, 20057, USA
| | - Sarah A Flowers
- Department of Neuroscience, Georgetown University Medical Center, 3970 Reservoir Road NW, Washington, DC, 20057, USA
| | - Chengbiao Wu
- Department of Neurosciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Valeria Avdoshina
- Department of Neuroscience, Georgetown University Medical Center, 3970 Reservoir Road NW, Washington, DC, 20057, USA
| | - Italo Mocchetti
- Department of Pharmacology and Physiology, Washington, DC, 20057, USA. .,Department of Neuroscience, Georgetown University Medical Center, 3970 Reservoir Road NW, Washington, DC, 20057, USA.
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Pandey HS, Seth P. Friends Turn Foe-Astrocytes Contribute to Neuronal Damage in NeuroAIDS. J Mol Neurosci 2019; 69:286-297. [PMID: 31236774 DOI: 10.1007/s12031-019-01357-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/12/2019] [Indexed: 02/07/2023]
Abstract
Astrocytes play a wide variety of roles in the central nervous system (CNS). Various facets of astrocyte-neuron interplay, investigated for the past few decades, have placed these most abundant and important glial cell types to be of supreme importance for the maintenance of the healthy CNS. Interestingly, glial dysfunctions have proven to be the major contributor to neuronal loss in several CNS disorders and pathologies. Specifically, in the field of neuroAIDS, glial dysfunction-mediated neuronal stress is a major factor contributing to the HIV-1 neuropathogenesis. As there is increasing evidence that astrocytes harbor HIV-1 and serve as "safe haven" for the dormant virus in the brain, the indirect pathway of neuronal damage has taken over the direct neuronal damage in its contribution to HIV-1 neuropathogenesis. In this review, we provide a brief insight into the astrocyte functions and dysfunctions in different CNS conditions with an elaborated insight into neuroAIDS. Detailed understanding of the role of astrocytes in neuroAIDS will help in the better therapeutic management of the neurological problems associated with HIV-1 patients.
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Affiliation(s)
- Hriday Shanker Pandey
- Department of Cellular and Molecular Neuroscience, Neurovirology Section, National Brain Research Centre (NBRC), Nainwal Road, NH-8, Manesar, Gurgaon, Haryana, 122052, India
| | - Pankaj Seth
- Department of Cellular and Molecular Neuroscience, Neurovirology Section, National Brain Research Centre (NBRC), Nainwal Road, NH-8, Manesar, Gurgaon, Haryana, 122052, India.
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28
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Fredericksen F, Villalba M, Maldonado N, Payne G, Torres F, Olavarría VH. Sumoylation of nucleoprotein (NP) mediated by activation of NADPH oxidase complex is a consequence of oxidative cellular stress during infection by Infectious salmon anemia (ISA) virus necessary to viral progeny. Virology 2019; 531:269-279. [PMID: 30974383 DOI: 10.1016/j.virol.2019.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 01/22/2023]
Abstract
The study evaluated the effects of nucleoprotein viral and the infectious virus in SHK-1 cells. The results show a strong respiratory burst activation and the induction of p47phox, SOD, GLURED, and apoptotic genes. Additionally, the cells alter the profile of SUMOylated proteins by the effect of transfection and infection experiments. In silico analyses show a set of structural motifs in NP susceptible of post-translational modification by the SUMO protein. Interestingly, the inhibition of the NADPH oxidase complex blocked the production of reactive oxygen species and the high level of cellular ROS due to the nucleoprotein and the ISAv. At the same time, the blocking of the p38MAPK signaling pathway and the use of Aristotelia chilensis, decreased viral progeny production. These results suggest that the NP triggers a strong production of ROS and modifying the post-translational profile mediated by SUMO-2/3, a phenomenon that favors the production of new virions.
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Affiliation(s)
- Fernanda Fredericksen
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile
| | - Melina Villalba
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile
| | - Nicolas Maldonado
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile
| | - Gardenia Payne
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile
| | - Francisco Torres
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile
| | - Víctor H Olavarría
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, Chile.
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29
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Jo H, Jang HY, Youn GS, Kim D, Lee CY, Jang JH, Choi SY, Jun JG, Park J. Hindsiipropane B alleviates HIV-1 Tat-induced inflammatory responses by suppressing HDAC6-NADPH oxidase-ROS axis in astrocytes. BMB Rep 2018; 51:394-399. [PMID: 29699604 PMCID: PMC6130829 DOI: 10.5483/bmbrep.2018.51.8.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Indexed: 01/29/2023] Open
Abstract
Human immunodeficiency virus-1 (HIV-1) transactivator of transcription (Tat) is an important viral factor in neuroinflammation. Hindsiipropane B, present in Celastrus hindsii, possesses various biological mechanisms including antiinflammatory activity. In this report, we explored the regulatory activity of hindsiipropane B on HIV-1 Tat-mediated chemokine production and its mode of action in astrocytes. Hindsiipropane B significantly alleviated HIV-1 Tat-mediated production of inflammatory chemokines, CCL2, CXCL8, and CXCL10. Hindsiipropane B inhibited expression of HDAC6, which is important regulator in HIV-1 Tat-mediated chemokine production. Hindsiipropane B diminished HIV-1 Tat-mediated reactive oxygen species (ROS) generation and NADPH oxidase activation/expression. Furthermore, hindsiipropane B inhibited HIV-1 Tat-mediated signaling cascades including MAPK, NF-κB, and AP-1. These data suggest that hindsiipropane B exerts its inhibitory effects on HIV-1 Tat-mediated chemokine production via down-regulating the HDAC6-NADPH oxidase-MAPK-NF-κB/AP-1 signaling axis, and could serve as a therapeutic lead compound against HIV-1 Tat-associated neuroinflammation. [BMB Reports 2018; 51(8): 394-399].
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Affiliation(s)
- Hyundong Jo
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Ha Young Jang
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chunchon 24252, Korea
| | - Gi Soo Youn
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Donggyu Kim
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Chae Yeon Lee
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Jae Hee Jang
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chunchon 24252, Korea
| | - Jinseu Park
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
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30
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Chen L, Keppler OT, Schölz C. Post-translational Modification-Based Regulation of HIV Replication. Front Microbiol 2018; 9:2131. [PMID: 30254620 PMCID: PMC6141784 DOI: 10.3389/fmicb.2018.02131] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/20/2018] [Indexed: 12/13/2022] Open
Abstract
Human immunodeficiency virus (HIV) relies heavily on the host cellular machinery for production of viral progeny. To exploit cellular proteins for replication and to overcome host factors with antiviral activity, HIV has evolved a set of regulatory and accessory proteins to shape an optimized environment for its replication and to facilitate evasion from the immune system. Several cellular pathways are hijacked by the virus to modulate critical steps during the viral life cycle. Thereby, post-translational modifications (PTMs) of viral and cellular proteins gain increasingly attention as modifying enzymes regulate virtually every step of the viral replication cycle. This review summarizes the current knowledge of HIV-host interactions influenced by PTMs with a special focus on acetylation, ubiquitination, and phosphorylation of proteins linked to cellular signaling and viral replication. Insights into these interactions are surmised to aid development of new intervention strategies.
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Affiliation(s)
- Lin Chen
- Max von Pettenkofer-Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Oliver T Keppler
- Max von Pettenkofer-Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christian Schölz
- Max von Pettenkofer-Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
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31
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Saleem N, Prasad A, Goswami SK. Apocynin prevents isoproterenol-induced cardiac hypertrophy in rat. Mol Cell Biochem 2017; 445:79-88. [PMID: 29256115 DOI: 10.1007/s11010-017-3253-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 12/10/2017] [Indexed: 12/19/2022]
Abstract
Oxidative stress is implicated in the pathogenesis of a plethora of cardiovascular diseases including interstitial fibrosis, contractile dysfunction, ischemia-reperfusion injury, and cardiac remodeling. However, antioxidant therapies targeting oxidative stress in the progression of those diseases have largely been unsuccessful. The current study evaluated the effects of a NADPH oxidase inhibitor, apocynin (Apo), on the production of reactive oxygen species and the development of pathological cardiac hypertrophy under sustained β-adrenergic stimulation in male Wistar rats. As evident from the HW/BW ratio, HW/TL ratio, echocardiography, and histopathology, hypertrophic responses induced by isoproterenol (Iso; 5 mg/Kg body weight, subcutaneous) were blocked by Apo (10 mg/Kg body weight, intraperitoneal). Iso treatment increased the transcript levels of cybb and p22-phox, the two subunits of Nox. Iso treatment also caused a decrease in reduced glutathione level that was restored by Apo. Increase in mRNA levels of a number of markers of hypertrophy, viz., ANP, BNP, β-MHC, and ACTA-1 by Iso was either partially or completely prevented by Apo. Activation of key signaling kinases such as PKA, Erk, and Akt by Iso was also prevented by Apo treatment. Our study thus provided hemodynamic, biochemical, and molecular evidences supporting the therapeutic value of Apo in ameliorating adrenergic stress-induced cardiac hypertrophy.
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Affiliation(s)
- Nikhat Saleem
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Anamika Prasad
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Shyamal K Goswami
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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