1
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Zhang H, Li Y, Liu Y. An updated review of the pharmacological effects and potential mechanisms of hederagenin and its derivatives. Front Pharmacol 2024; 15:1374264. [PMID: 38962311 PMCID: PMC11220241 DOI: 10.3389/fphar.2024.1374264] [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: 01/21/2024] [Accepted: 05/23/2024] [Indexed: 07/05/2024] Open
Abstract
Hederagenin (HG) is a natural pentacyclic triterpenoid that can be isolated from various medicinal herbs. By modifying the structure of HG, multiple derivatives with superior biological activities and safety profiles have been designed and synthesized. Accumulating evidence has demonstrated that HG and its derivatives display multiple pharmacological activities against cancers, inflammatory diseases, infectious diseases, metabolic diseases, fibrotic diseases, cerebrovascular and neurodegenerative diseases, and depression. Previous studies have confirmed that HG and its derivatives combat cancer by exerting cytotoxicity, inhibiting proliferation, inducing apoptosis, modulating autophagy, and reversing chemotherapy resistance in cancer cells, and the action targets involved mainly include STAT3, Aurora B, KIF7, PI3K/AKT, NF-κB, Nrf2/ARE, Drp1, and P-gp. In addition, HG and its derivatives antagonize inflammation through inhibiting the production and release of pro-inflammatory cytokines and inflammatory mediators by regulating inflammation-related pathways and targets, such as NF-κB, MAPK, JAK2/STAT3, Keap1-Nrf2/HO-1, and LncRNA A33/Axin2/β-catenin. Moreover, anti-pathogen, anti-metabolic disorder, anti-fibrosis, neuroprotection, and anti-depression mechanisms of HG and its derivatives have been partially elucidated. The diverse pharmacological properties of HG and its derivatives hold significant implications for future research and development of new drugs derived from HG, which can lead to improved effectiveness and safety profiles.
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Affiliation(s)
- Huize Zhang
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yong Li
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yi Liu
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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2
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Mackiewicz J, Lisek M, Boczek T. Targeting CaN/NFAT in Alzheimer's brain degeneration. Front Immunol 2023; 14:1281882. [PMID: 38077352 PMCID: PMC10701682 DOI: 10.3389/fimmu.2023.1281882] [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: 08/23/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by a progressive loss of cognitive functions. While the exact causes of this debilitating disorder remain elusive, numerous investigations have characterized its two core pathologies: the presence of β-amyloid plaques and tau tangles. Additionally, multiple studies of postmortem brain tissue, as well as results from AD preclinical models, have consistently demonstrated the presence of a sustained inflammatory response. As the persistent immune response is associated with neurodegeneration, it became clear that it may also exacerbate other AD pathologies, providing a link between the initial deposition of β-amyloid plaques and the later development of neurofibrillary tangles. Initially discovered in T cells, the nuclear factor of activated T-cells (NFAT) is one of the main transcription factors driving the expression of inflammatory genes and thus regulating immune responses. NFAT-dependent production of inflammatory mediators is controlled by Ca2+-dependent protein phosphatase calcineurin (CaN), which dephosphorylates NFAT and promotes its transcriptional activity. A substantial body of evidence has demonstrated that aberrant CaN/NFAT signaling is linked to several pathologies observed in AD, including neuronal apoptosis, synaptic deficits, and glia activation. In view of this, the role of NFAT isoforms in AD has been linked to disease progression at different stages, some of which are paralleled to diminished cognitive status. The use of classical inhibitors of CaN/NFAT signaling, such as tacrolimus or cyclosporine, or adeno-associated viruses to specifically inhibit astrocytic NFAT activation, has alleviated some symptoms of AD by diminishing β-amyloid neurotoxicity and neuroinflammation. In this article, we discuss the recent findings related to the contribution of CaN/NFAT signaling to the progression of AD and highlight the possible benefits of targeting this pathway in AD treatment.
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Affiliation(s)
| | | | - Tomasz Boczek
- Department of Molecular Neurochemistry, Medical University of Lodz, Lodz, Poland
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3
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Hui W, Wenhua S, Shuojie Z, Lulin W, Panpan Z, Tongtong Z, Xiaoli X, Juhua D. How does NFAT3 regulate the occurrence of cardiac hypertrophy? IJC HEART & VASCULATURE 2023; 48:101271. [PMID: 37753338 PMCID: PMC10518445 DOI: 10.1016/j.ijcha.2023.101271] [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: 07/10/2023] [Revised: 08/24/2023] [Accepted: 09/08/2023] [Indexed: 09/28/2023]
Abstract
Cardiac hypertrophy is initially an adaptive response to physiological and pathological stimuli. Although pathological myocardial hypertrophy is the main cause of morbidity and mortality, our understanding of its mechanism is still weak. NFAT3 (nuclear factor of activated T-cell-3) is a member of the nuclear factor of the activated T cells (NFAT) family. NFAT3 plays a critical role in regulating the expression of cardiac hypertrophy genes by inducing their transcription. Recently, accumulating evidence has indicated that NFAT3 is a potent regulator of the progression of cardiac hypertrophy. This review, for the first time, summarizes the current studies on NFAT3 in cardiac hypertrophy, including the pathophysiological processes and the underlying pathological mechanism, focusing on the nuclear translocation and transcriptional function of NFAT3. This review will provide deep insight into the pathogenesis of cardiac hypertrophy and a theoretical basis for identifying new therapeutic targets in the NFAT3 network.
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Affiliation(s)
- Wang Hui
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Su Wenhua
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
- Department of Cardiology, The First People’s Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Zhang Shuojie
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Wang Lulin
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Zhao Panpan
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Zhang Tongtong
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xie Xiaoli
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Dan Juhua
- Laboratory of Molecular Genetics of Aging & Tumor, Medical School, Kunming University of Science and Technology, Kunming, Yunnan, China
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Dock10 Regulates Cardiac Function under Neurohormonal Stress. Int J Mol Sci 2022; 23:ijms23179616. [PMID: 36077014 PMCID: PMC9455810 DOI: 10.3390/ijms23179616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/18/2022] Open
Abstract
Dedicator of cytokinesis 10 (Dock10) is a guanine nucleotide exchange factor for Cdc42 and Rac1 that regulates the JNK (c-Jun N-terminal kinase) and p38 MAPK (mitogen-activated protein kinase) signaling cascades. In this study, we characterized the roles of Dock10 in the myocardium. In vitro: we ablated Dock10 in neonatal mouse floxed Dock10 cardiomyocytes (NMCMs) and cardiofibroblasts (NMCFs) by transduction with an adenovirus expressing Cre-recombinase. In vivo, we studied mice in which the Dock10 gene was constitutively and globally deleted (Dock10 KO) and mice with cardiac myocyte-specific Dock10 KO (Dock10 CKO) at baseline and in response to two weeks of Angiotensin II (Ang II) infusion. In vitro, Dock10 ablation differentially inhibited the α-adrenergic stimulation of p38 and JNK in NMCM and NMCF, respectively. In vivo, the stimulation of both signaling pathways was markedly attenuated in the heart. The Dock10 KO mice had normal body weight and cardiac size. However, echocardiography revealed mildly reduced systolic function, and IonOptix recordings demonstrated reduced contractility and elevated diastolic calcium levels in isolated cardiomyocytes. Remarkably, Dock10 KO, but not Dock10 CKO, exaggerated the pathological response to Ang II infusion. These data suggest that Dock10 regulates cardiac stress-related signaling. Although Dock10 can regulate MAPK signaling in both cardiomyocytes and cardiofibroblasts, the inhibition of pathological cardiac remodeling is not apparently due to the Dock10 signaling in the cardiomyocyte.
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Zhang Z, Bu L, Luo J, Guo J. Targeting protein kinases benefits cancer immunotherapy. Biochim Biophys Acta Rev Cancer 2022; 1877:188738. [PMID: 35660645 DOI: 10.1016/j.bbcan.2022.188738] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/16/2022] [Accepted: 05/28/2022] [Indexed: 02/07/2023]
Abstract
Small-molecule kinase inhibitors have been well established and successfully developed in the last decades for cancer target therapies. However, intrinsic or acquired drug resistance is becoming the major barrier for their clinical application. With the development of immunotherapies, in particular the discovery of immune checkpoint inhibitors (ICIs), the combination of ICIs with other therapies have recently been extensively explored, among which combination of ICIs with kinase inhibitors achieves promising clinical outcome in a plethora of cancer types. Here we comprehensively summarize the potent roles of protein kinases in modulating immune checkpoints both in tumor and immune cells, and reshaping tumor immune microenvironments by evoking innate immune response and neoantigen generation or presentation. Moreover, the clinical trial and approval of combined administration of kinase inhibitors with ICIs are collected, highlighting the precise strategies to benefit cancer immune therapies.
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Affiliation(s)
- Zhengkun Zhang
- Department of Urology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China; Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Lang Bu
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Junhang Luo
- Department of Urology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.
| | - Jianping Guo
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.
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Mondal A, Appu AP, Sadhukhan T, Bagh MB, Previde RM, Sadhukhan S, Stojilkovic S, Liu A, Mukherjee AB. Ppt1-deficiency dysregulates lysosomal Ca ++ homeostasis contributing to pathogenesis in a mouse model of CLN1 disease. J Inherit Metab Dis 2022; 45:635-656. [PMID: 35150145 PMCID: PMC9090967 DOI: 10.1002/jimd.12485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 11/08/2022]
Abstract
Inactivating mutations in the PPT1 gene encoding palmitoyl-protein thioesterase-1 (PPT1) underlie the CLN1 disease, a devastating neurodegenerative lysosomal storage disorder. The mechanism of pathogenesis underlying CLN1 disease has remained elusive. PPT1 is a lysosomal enzyme, which catalyzes the removal of palmitate from S-palmitoylated proteins (constituents of ceroid lipofuscin) facilitating their degradation and clearance by lysosomal hydrolases. Thus, it has been proposed that Ppt1-deficiency leads to lysosomal accumulation of ceroid lipofuscin leading to CLN1 disease. While S-palmitoylation is catalyzed by palmitoyl acyltransferases (called ZDHHCs), palmitoyl-protein thioesterases (PPTs) depalmitoylate these proteins. We sought to determine the mechanism by which Ppt1-deficiency may impair lysosomal degradative function leading to infantile neuronal ceroid lipofuscinosis pathogenesis. Here, we report that in Ppt1-/- mice, which mimic CLN1 disease, low level of inositol 3-phosphate receptor-1 (IP3R1) that mediates Ca++ transport from the endoplasmic reticulum to the lysosome dysregulated lysosomal Ca++ homeostasis. Intriguingly, the transcription factor nuclear factor of activated T-cells, cytoplasmic 4 (NFATC4), which regulates IP3R1-expression, required S-palmitoylation for trafficking from the cytoplasm to the nucleus. We identified two palmitoyl acyltransferases, ZDHHC4 and ZDHHC8, which catalyzed S-palmitoylation of NFATC4. Notably, in Ppt1-/- mice, reduced ZDHHC4 and ZDHHC8 levels markedly lowered S-palmitoylated NFATC4 (active) in the nucleus, which inhibited IP3R1-expression, thereby dysregulating lysosomal Ca++ homeostasis. Consequently, Ca++ -dependent lysosomal enzyme activities were markedly suppressed. Impaired lysosomal degradative function impaired autophagy, which caused lysosomal storage of undigested cargo. Importantly, IP3R1-overexpression in Ppt1-/- mouse fibroblasts ameliorated this defect. Our results reveal a previously unrecognized role of Ppt1 in regulating lysosomal Ca++ homeostasis and suggest that this defect contributes to pathogenesis of CLN1 disease.
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Affiliation(s)
- Avisek Mondal
- Section on Developmental Genetics, Division of Translational Medicine
| | - Abhilash P. Appu
- Section on Developmental Genetics, Division of Translational Medicine
| | - Tamal Sadhukhan
- Section on Developmental Genetics, Division of Translational Medicine
| | - Maria B. Bagh
- Section on Developmental Genetics, Division of Translational Medicine
| | - Rafael M. Previde
- Section on Cellular Signaling, Eunice Kennedy-Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830
| | | | - Stanko Stojilkovic
- Section on Cellular Signaling, Eunice Kennedy-Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830
| | - Aiyi Liu
- Biostatistics and Bioinformatics Branch, Division of Intramural Population Health Research, Eunice Kennedy-Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830
| | - Anil B Mukherjee
- Section on Developmental Genetics, Division of Translational Medicine
- Correspondence to AM () or ABM ()
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Humer C, Romanin C, Höglinger C. Highlighting the Multifaceted Role of Orai1 N-Terminal- and Loop Regions for Proper CRAC Channel Functions. Cells 2022; 11:371. [PMID: 35159181 PMCID: PMC8834118 DOI: 10.3390/cells11030371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 11/16/2022] Open
Abstract
Orai1, the Ca2+-selective pore in the plasma membrane, is one of the key components of the Ca2+release-activated Ca2+ (CRAC) channel complex. Activated by the Ca2+ sensor in the endoplasmic reticulum (ER) membrane, stromal interaction molecule 1 (STIM1), via direct interaction when ER luminal Ca2+ levels recede, Orai1 helps to maintain Ca2+ homeostasis within a cell. It has already been proven that the C-terminus of Orai1 is indispensable for channel activation. However, there is strong evidence that for CRAC channels to function properly and maintain all typical hallmarks, such as selectivity and reversal potential, additional parts of Orai1 are needed. In this review, we focus on these sites apart from the C-terminus; namely, the second loop and N-terminus of Orai1 and on their multifaceted role in the functioning of CRAC channels.
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Affiliation(s)
| | | | - Carmen Höglinger
- Institute of Biophysics, Johannes Kepler University Linz, Gruberstrasse 40, 4020 Linz, Austria; (C.H.); (C.R.)
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8
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Liu X, Guo JW, Lin XC, Tuo YH, Peng WL, He SY, Li ZQ, Ye YC, Yu J, Zhang FR, Ma MM, Shang JY, Lv XF, Zhou AD, Ouyang Y, Wang C, Pang RP, Sun JX, Ou JS, Zhou JG, Liang SJ. Macrophage NFATc3 prevents foam cell formation and atherosclerosis: evidence and mechanisms. Eur Heart J 2021; 42:4847-4861. [PMID: 34570211 DOI: 10.1093/eurheartj/ehab660] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/13/2021] [Accepted: 09/02/2021] [Indexed: 12/19/2022] Open
Abstract
AIMS Our previous study demonstrated that Ca2+ influx through the Orai1 store-operated Ca2+ channel in macrophages contributes to foam cell formation and atherosclerosis via the calcineurin-ASK1 pathway, not the classical calcineurin-nuclear factor of activated T-cell (NFAT) pathway. Moreover, up-regulation of NFATc3 in macrophages inhibits foam cell formation, suggesting that macrophage NFATc3 is a negative regulator of atherogenesis. Hence, this study investigated the precise role of macrophage NFATc3 in atherogenesis. METHODS AND RESULTS Macrophage-specific NFATc3 knockout mice were generated to determine the effect of NFATc3 on atherosclerosis in a mouse model of adeno-associated virus-mutant PCSK9-induced atherosclerosis. NFATc3 expression was decreased in macrophages within human and mouse atherosclerotic lesions. Moreover, NFATc3 levels in peripheral blood mononuclear cells from atherosclerotic patients were negatively associated with plaque instability. Furthermore, macrophage-specific ablation of NFATc3 in mice led to the atherosclerotic plaque formation, whereas macrophage-specific NFATc3 transgenic mice exhibited the opposite phenotype. NFATc3 deficiency in macrophages promoted foam cell formation by potentiating SR-A- and CD36-meditated lipid uptake. NFATc3 directly targeted and transcriptionally up-regulated miR-204 levels. Mature miR-204-5p suppressed SR-A expression via canonical regulation. Unexpectedly, miR-204-3p localized in the nucleus and inhibited CD36 transcription. Restoration of miR-204 abolished the proatherogenic phenotype observed in the macrophage-specific NFATc3 knockout mice, and blockade of miR-204 function reversed the beneficial effects of NFATc3 in macrophages. CONCLUSION Macrophage NFATc3 up-regulates miR-204 to reduce SR-A and CD36 levels, thereby preventing foam cell formation and atherosclerosis, indicating that the NFATc3/miR-204 axis may be a potential therapeutic target against atherosclerosis.
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Affiliation(s)
- Xiu Liu
- Program of Kidney and Cardiovascular Diseases, the Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Jia-Wei Guo
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Pharmacology, School of Medicine, Yangtze University, 1 Nanhuan Rd, Jingzhou 434023, China
| | - Xiao-Chun Lin
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Yong-Hua Tuo
- Department of Neurosurgery, the Second Affiliated Hospital of Guangzhou Medical University, 250 Changgang East Rd, Guangzhou 510260, China
| | - Wan-Li Peng
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Su-Yue He
- Department of Physiology, Pain Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Zhao-Qiang Li
- Guangdong Provincial Key Laboratory of Tumor Immunotherapy, Cancer Research Institute, Southern Medical University, 1023 Shatai South Rd, Guangzhou 510515, China
| | - Yan-Chen Ye
- Division of Vascular Surgery, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2 Rd, Guangzhou 510080, China.,National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Jie Yu
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, 253 Industrial Rd, Guangzhou 510282, China
| | - Fei-Ran Zhang
- Program of Kidney and Cardiovascular Diseases, the Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Ming-Ming Ma
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Jin-Yan Shang
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Xiao-Fei Lv
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - An-Dong Zhou
- Department of Clinical Medicine, the Second Clinical Medical School, Guangdong Medical University, 1 Xincheng Rd, Dongguan 523808, China
| | - Ying Ouyang
- Department of Pediatrics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Rd, Guangzhou 510120, China
| | - Cheng Wang
- Program of Kidney and Cardiovascular Diseases, the Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Rui-Ping Pang
- Department of Physiology, Pain Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
| | - Jian-Xin Sun
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust St., Rm. 368G, Philadelphia PA 19107, USA
| | - Jing-Song Ou
- National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, the First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2 Rd, Guangzhou 510080, China.,Division of Cardiac Surgery, Heart Center, the First Affiliated Hospital, Sun Yat-Sen University, 58 ZhongShan 2 Rd, Guangzhou 510080, China
| | - Jia-Guo Zhou
- Program of Kidney and Cardiovascular Diseases, the Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Cardiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, 107 Yanjiang West Rd, Guangzhou 510120, China.,Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Key Laboratory of Cardiovascular diseases, School of Basic Medical Sciences, Guangzhou Medical University, 1 Xinzao Rd, Guangzhou 511436, China
| | - Si-Jia Liang
- Program of Kidney and Cardiovascular Diseases, the Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China.,Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2 Rd, Guangzhou 510080, China
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Zao X, Cheng J, Shen C, Guan G, Feng X, Zou J, Zhang J, Liu T, Zheng H, Zhang T, Wang J, Liu J, Li D, Lu F, You F, Chen X. NFATc3 inhibits hepatocarcinogenesis and HBV replication via positively regulating RIG-I-mediated interferon transcription. Oncoimmunology 2021; 10:1869388. [PMID: 33520407 PMCID: PMC7808430 DOI: 10.1080/2162402x.2020.1869388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Nuclear factor of activated T cells 3 (NFATc3) has been reported to upregulate type I interferons (IFNs) expression, and the abnormal expression and activation of NFATc3 were closely related to tumorigenesis. However, the potential function of NFATc3 in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) remains to be elucidated. In this study, we found that NFATc3 gene was frequently deleted and downregulated in HCC tumor tissues, and that the downregulation of NFATc3 was associated with poor prognosis of HCC patients. The gain- and loss-of-function experiments demonstrated that NFATc3 inhibited HCC cell proliferation and invasion, as well as HBV replication. Mechanistically, NFATc3 could bind to the promoters of IFNL1 and IFNB1 genes and prompt the production of IFNs and interferon-stimulated genes. Furthermore, retinoic acid-inducible gene-I (RIG-I) pathway activation increased NFATc3 expression and nuclear localization, and activated NFATc3 further enhanced RIG-I-mediated IFN responses. Collectively, our findings reveal a novel regulatory signaling cascade, the RIG-I/NFATc3/IFNs axis, which inhibits hepatocarcinogenesis and HBV replication by enhancing the immune response in hepatocytes, and this functional axis might potentially be exploited for therapeutic benefits in the clinical treatment of HBV-related HCC.
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Affiliation(s)
- Xiaobin Zao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Jin Cheng
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Congle Shen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Guiwen Guan
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Xiaoyu Feng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Jun Zou
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Jing Zhang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Tianxu Liu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Huiling Zheng
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Ting Zhang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Jie Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Jia Liu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Deyao Li
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
| | - Fengmin Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China.,Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Fuping You
- Institute of Systems Biomedicine, Department of Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing, China
| | - Xiangmei Chen
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University Health Science Center, Beijing, China
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10
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Zhang X, Sun W, He L, Wang L, Qiu K, Yin J. Global DNA methylation pattern involved in the modulation of differentiation potential of adipogenic and myogenic precursors in skeletal muscle of pigs. Stem Cell Res Ther 2020; 11:536. [PMID: 33308295 PMCID: PMC7731745 DOI: 10.1186/s13287-020-02053-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 11/26/2020] [Indexed: 12/13/2022] Open
Abstract
Background Skeletal muscle is a complex and heterogeneous tissue accounting for approximately 40% of body weight. Excessive ectopic lipid accumulation in the muscle fascicle would undermine the integrity of skeletal muscle in humans but endow muscle with marbling-related characteristics in farm animals. Therefore, the balance of myogenesis and adipogenesis is of great significance for skeletal muscle homeostasis. Significant DNA methylation occurs during myogenesis and adipogenesis; however, DNA methylation pattern of myogenic and adipogenic precursors derived from skeletal muscle remains unknown yet. Methods In this study, reduced representation bisulfite sequencing was performed to analyze genome-wide DNA methylation of adipogenic and myogenic precursors derived from the skeletal muscle of neonatal pigs. Integrated analysis of DNA methylation and transcription profiles was further conducted. Based on the results of pathway enrichment analysis, myogenic precursors were transfected with CACNA2D2-overexpression plasmids to explore the function of CACNA2D2 in myogenic differentiation. Results As a result, 11,361 differentially methylated regions mainly located in intergenic region and introns were identified. Furthermore, 153 genes with different DNA methylation and gene expression level between adipogenic and myogenic precursors were characterized. Subsequently, pathway enrichment analysis revealed that DNA methylation programing was involved in the regulation of adipogenic and myogenic differentiation potential through mediating the crosstalk among pathways including focal adhesion, regulation of actin cytoskeleton, MAPK signaling pathway, and calcium signaling pathway. In particular, we characterized a new role of CACNA2D2 in inhibiting myogenic differentiation by suppressing JNK/MAPK signaling pathway. Conclusions This study depicted a comprehensive landmark of DNA methylome of skeletal muscle-derived myogenic and adipogenic precursors, highlighted the critical role of CACNA2D2 in regulating myogenic differentiation, and illustrated the possible regulatory ways of DNA methylation on cell fate commitment and skeletal muscle homeostasis. Supplementary information The online version contains supplementary material available at 10.1186/s13287-020-02053-3.
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Affiliation(s)
- Xin Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.,State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Wenjuan Sun
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Linjuan He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Liqi Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Kai Qiu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Jingdong Yin
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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11
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Anti-cancer potential of persimmon (Diospyros kaki) leaves via the PDGFR-Rac-JNK pathway. Sci Rep 2020; 10:18119. [PMID: 33093618 PMCID: PMC7581826 DOI: 10.1038/s41598-020-75140-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/09/2020] [Indexed: 12/14/2022] Open
Abstract
Persimmon leaves are known to have some beneficial effects, including ROS elimination, lipid circulation, and neuronal protection. However, their anti-cancer properties and the underlying mechanisms remain unclear. Herein, we show that treatment with the ethanol extract of persimmon, Diospyros kaki, leaves (EEDK) induces cancer cell death and inhibits cell proliferation. Using fluorescence resonance energy transfer (FRET) technology with genetically-encoded biosensors, we first found that EEDK stimulates a PDGFR-Rac signaling cascade in live cells. Moreover, we found that downstream of the PDGFR-Rac pathway, JNKs are activated by EEDK. In contrast, JNK-downstream inhibitors, such as CoCl2, T-5224, and pepstatin A, attenuated EEDK-induced cell death. Thus, we illustrate that the PDGFR-Rac-JNK signaling axis is triggered by EEDK, leading to cancer cell death, suggesting the extract of persimmon leaves may be a promising anti-cancer agent.
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12
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Ma W, Huang Q, Xiong G, Deng L, He Y. The protective effect of Hederagenin on pulmonary fibrosis by regulating the Ras/JNK/NFAT4 axis in rats. Biosci Biotechnol Biochem 2020; 84:1131-1138. [PMID: 32024440 DOI: 10.1080/09168451.2020.1721263] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
As a respiratory disease with high morbidity and mortality, pulmonary fibrosis (PF) has been a serious threat to people's health. Hederagenin (HDG) is a pentacyclic triterpenoid saponin widely distributed in various plants. This study explored the role of HDG in Bleomycin (BLM)-induced PF and the molecular mechanism. The results showed that HDG reduced BLM-induced pulmonary dysfunction, pathological damage in a dose-dependent manner. Besides, HDG reduced BLM-induced collagen deposition by decreasing the levels of α-SMA, Collagen I and hydroxproline. Furthermore, HDG reduced the levels of inflammatory cytokines (TNF-α and IL-6), TGF-β1 and connective tissue growth factor (CTGF) in bronchoalveolar lavage fluid (BALF) or serum. Further mechanism analysis indicated that HDG inhibited the expression of Ras and phosphorylation of JNK and NFAT4 in a dose-dependent manner. However, the JNK pathway activator Anisomycin reversed this inhibitory effect. In conclusion, these findings suggest that HDG may be a potential target drug for PF therapy.
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Affiliation(s)
- Wenjing Ma
- Adverse Drug Reaction Monitoring Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, P. R. China
| | - Qingsong Huang
- Department of Pneumology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, P. R. China
| | - Guofu Xiong
- Department of Pneumology, Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu, Sichuan Province, P. R. China
| | - Lijun Deng
- Department of Pneumology, Neijiang Hospital of Traditional Chinese Medicine, Neijiang, Sichuan Province, P. R. China
| | - Yan He
- Adverse Drug Reaction Monitoring Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, P. R. China
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13
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Li Z, Zhang X, Guo Z, Zhong Y, Wang P, Li J, Li Z, Liu P. SIRT6 Suppresses NFATc4 Expression and Activation in Cardiomyocyte Hypertrophy. Front Pharmacol 2019; 9:1519. [PMID: 30670969 PMCID: PMC6331469 DOI: 10.3389/fphar.2018.01519] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 12/11/2018] [Indexed: 12/15/2022] Open
Abstract
NFATc4, a member from the Nuclear Factor of Activated T cells (NFATs) transcription factor family, plays a pivotal role in the development of cardiac hypertrophy. NFATc4 is dephosphorylated by calcineurin and translocated from the cytoplasm to the nucleus to regulate the expression of hypertrophic genes, like brain natriuretic polypeptide (BNP). The present study identified SIRT6, an important subtype of NAD+ dependent class III histone deacetylase, to be a negative regulator of NFATc4 in cardiomyocyte hypertrophy. In phenylephrine (PE)-induced hypertrophic cardiomyocyte model, overexpression of SIRT6 by adenovirus infection or by plasmid transfection repressed the protein and mRNA expressions of NFATc4, elevated its phosphorylation level, prevented its nuclear accumulation, subsequently suppressed its transcriptional activity and downregulated its target gene BNP. By contrast, mutant of SIRT6 without deacetylase activity (H133Y) did not demonstrate these effects, suggesting that the inhibitory effect of SIRT6 on NFATc4 was dependent on its deacetylase activity. Moreover, the effect of SIRT6 overexpression on repressing BNP expression was reversed by NFATc4 replenishment, whereas the effect of SIRT6 deficiency on upregulating BNP was recovered by NFATc4 silencing. Mechanistically, interactions between SIRT6 and NFATc4 might possibly facilitate the deacetylation of NFATc4 by SIRT6, thereby preventing the activation of NFATc4. In conclusion, the present study reveals that SIRT6 suppresses the expression and activation of NFATc4. These findings provide more evidences of the anti-hypertrophic effect of SIRT6 and suggest SIRT6 as a potential therapeutic target for cardiac hypertrophy.
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Affiliation(s)
- Zhenzhen Li
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiaoying Zhang
- Department of Pharmacology, School of Medicine, Xizang Minzu University, Shaanxi, China
| | - Zhen Guo
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yao Zhong
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Department of Cardiology, Third People's Hospital of Dongguan, Dongguan, China
| | - Panxia Wang
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jingyan Li
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhuoming Li
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Peiqing Liu
- Department of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,National and Local United Engineering Lab of Druggability and New Drugs Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
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14
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Lee JU, Kim LK, Choi JM. Revisiting the Concept of Targeting NFAT to Control T Cell Immunity and Autoimmune Diseases. Front Immunol 2018; 9:2747. [PMID: 30538703 PMCID: PMC6277705 DOI: 10.3389/fimmu.2018.02747] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/08/2018] [Indexed: 01/15/2023] Open
Abstract
The nuclear factor of activated T cells (NFAT) family of transcription factors, which includes NFAT1, NFAT2, and NFAT4, are well-known to play important roles in T cell activation. Most of NFAT proteins are controlled by calcium influx upon T cell receptor and costimulatory signaling results increase of IL-2 and IL-2 receptor. NFAT3 however is not shown to be expressed in T cells and NFAT5 has not much highlighted in T cell functions yet. Recent studies demonstrate that the NFAT family proteins involve in function of lineage-specific transcription factors during differentiation of T helper 1 (Th1), Th2, Th17, regulatory T (Treg), and follicular helper T cells (Tfh). They have been studied to make physical interaction with the other transcription factors like GATA3 or Foxp3 and they also regulate Th cell signature gene expressions by direct binding on promotor region of target genes. From last decades, NFAT functions in T cells have been targeted to develop immune modulatory drugs for controlling T cell immunity in autoimmune diseases like cyclosporine A, FK506, etc. Due to their undesirable side defects, only limited application is available in human diseases. This review focuses on the recent advances in development of NFAT targeting drug as well as our understanding of each NFAT family protein in T cell biology. We also discuss updated detail molecular mechanism of NFAT functions in T cells, which would lead us to suggest an idea for developing specific NFAT inhibitors as a therapeutic drug for autoimmune diseases.
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Affiliation(s)
- Jae-Ung Lee
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
| | - Li-Kyung Kim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, South Korea.,Research Institute for Natural Sciences, Hanyang University, Seoul, South Korea
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15
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Kaminuma O, Kitamura N, Nishito Y, Nemoto S, Tatsumi H, Mori A, Hiroi T. Downregulation of NFAT3 Due to Lack of T-Box Transcription Factor TBX5 Is Crucial for Cytokine Expression in T Cells. THE JOURNAL OF IMMUNOLOGY 2017; 200:92-100. [PMID: 29180489 DOI: 10.4049/jimmunol.1602113] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 10/19/2017] [Indexed: 11/19/2022]
Abstract
The NFAT family transcription factors play crucial roles in immunological and other biological activities. NFAT3 is rarely expressed in T cells, and the mechanisms and significance of the specific NFAT3 downregulation in T cells have been unknown. In human CD4+ T cells, overexpression of NFAT1 and NFAT3 enhanced and suppressed IL-2 expression, respectively. NFAT3 downregulation in Jurkat cells using RNA interference technology augmented IL-2 expression, whereas a knockdown of NFAT1, NFAT2, and NFAT4 suppressed it. The promoter/enhancer activity of the NFAT-binding site in the IL-2 gene was upregulated and downregulated by NFAT1 and NFAT3, respectively. A study employing NFAT1/NFAT3 chimeric molecules revealed that the region in NFAT3 responsible for NFAT promoter activity inhibition was located within its N-terminal transactivation domain, Ca2+-regulatory domain, and DNA-binding domain. Downregulation of NFAT3 expression in T cells is mediated by lower chromatin accessibility and enhancer activity in its promoter in comparison with aortic smooth muscle cells expressing endogenous NFAT3. The binding sites of T-box transcription factor TBX5 and NK-2 transcription factor-related locus 5 Nkx2.5, which were expressed at higher levels in aortic smooth muscle cells than in T cells, were located within the -387 to +97 NFAT3 promoter region, exhibiting the maximum enhancer activity. Mutating the binding site of TBX5 but not Nkx2.5 diminished the NFAT3 promoter activity, whereas the overexpression of TBX5 enhanced it. Introduction of TBX5 into CD4+ T cells enhanced the expression of NFAT3 and suppressed that of IL-2. TBX5 deficiency-mediated downregulation of NFAT3 is crucial for the high cytokine-producing activity of T cells.
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Affiliation(s)
- Osamu Kaminuma
- Allergy and Immunology Project, The Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan; .,Center for Life Science Research, University of Yamanashi, Yamanashi 409-3898, Japan
| | - Noriko Kitamura
- Allergy and Immunology Project, The Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan
| | - Yasumasa Nishito
- Center for Basic Technology Research, The Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan
| | - Soichi Nemoto
- Department of Obstetrics and Gynecology, National Hospital Organization, Sagamihara National Hospital, Kanagawa 252-0392, Japan; and
| | - Hideki Tatsumi
- Department of Obstetrics and Gynecology, National Hospital Organization, Sagamihara National Hospital, Kanagawa 252-0392, Japan; and
| | - Akio Mori
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa 252-0392, Japan
| | - Takachika Hiroi
- Allergy and Immunology Project, The Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan
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16
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Hatem-Vaquero M, Griera M, Giermakowska W, Luengo A, Calleros L, Gonzalez Bosc LV, Rodríguez-Puyol D, Rodríguez-Puyol M, De Frutos S. Integrin linked kinase regulates the transcription of AQP2 by NFATC3. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2017; 1860:922-935. [PMID: 28736155 DOI: 10.1016/j.bbagrm.2017.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/18/2017] [Accepted: 07/18/2017] [Indexed: 12/01/2022]
Abstract
Two processes are associated with progressive loss of renal function: 1) decreased aquaporin-2 (AQP2) expression and urinary concentrating capacity (Nephrogenic Diabetes Insipidus, NDI); and 2) changes in extracellular matrix (ECM) composition, e.g. increased collagen I (Col I) deposition, characteristic of tubule-interstitial fibrosis. AQP2 expression is regulated by both the ECM-to-intracellular scaffold protein integrin-linked kinase (ILK) by NFATc/AP1 and other transcription factors. In the present work, we used in vivo and in vitro approaches to examine ILK participation in NFATc3/AP-1-mediated increases in AQP2 gene expression. Both NFATc3 knock-out mice and ILK conditional-knockdown mice (cKD-ILK) display symptoms of NDI (polyuria and reduced AQP2 expression). NFATc3 is upregulated in the renal medulla tubular cells of cKD-ILK mice but with reduced nuclear localization. Inner medullary collecting duct mIMCD3 cells were subjected to ILK depletion and transfected with reporter plasmids. Pharmacological activators or inhibitors determined the effect of ILK activity on NFATc/AP-1-dependent increases in transcription of AQP2. Finally, mIMCD3 cultured on Col I showed reduced activity of the ILK/GSK3β/NFATc/AQP2 axis, suggesting this pathway is a potential target for therapeutic treatment of NDI.
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Affiliation(s)
- Marco Hatem-Vaquero
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
| | - Mercedes Griera
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
| | - Wieslawa Giermakowska
- Vascular Physiology Group, Department of Cell Biology and Physiology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
| | - Alicia Luengo
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
| | - Laura Calleros
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
| | - Laura V Gonzalez Bosc
- Vascular Physiology Group, Department of Cell Biology and Physiology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
| | - Diego Rodríguez-Puyol
- Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain; Biomedical Research Foundation and Nephrology Department, Hospital Príncipe de Asturias, Alcalá de Henares, Madrid, Spain.
| | - Manuel Rodríguez-Puyol
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
| | - Sergio De Frutos
- Department of Systems Biology, Physiology Unit, Faculty of Medicine, University of Alcalá, 28805 Alcalá de Henares, Madrid, Spain; Instituto Reina Sofia de Investigación Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.
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17
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Jernigan NL, Resta TC, Gonzalez Bosc LV. Altered Redox Balance in the Development of Chronic Hypoxia-induced Pulmonary Hypertension. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 967:83-103. [PMID: 29047083 DOI: 10.1007/978-3-319-63245-2_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Normally, the pulmonary circulation is maintained in a low-pressure, low-resistance state with little resting tone. Pulmonary arteries are thin-walled and rely heavily on pulmonary arterial distension and recruitment for reducing pulmonary vascular resistance when cardiac output is elevated. Under pathophysiological conditions, however, active vasoconstriction and vascular remodeling lead to enhanced pulmonary vascular resistance and subsequent pulmonary hypertension (PH). Chronic hypoxia is a critical pathological factor associated with the development of PH resulting from airway obstruction (COPD, sleep apnea), diffusion impairment (interstitial lung disease), developmental lung abnormalities, or high altitude exposure (World Health Organization [WHO]; Group III). The rise in pulmonary vascular resistance increases right heart afterload causing right ventricular hypertrophy that can ultimately lead to right heart failure in patients with chronic lung disease. PH is typically characterized by diminished paracrine release of vasodilators, antimitogenic factors, and antithrombotic factors (e.g., nitric oxide and protacyclin) and enhanced production of vasoconstrictors and mitogenic factors (e.g., reactive oxygen species and endothelin-1) from the endothelium and lung parenchyma. In addition, phenotypic changes to pulmonary arterial smooth muscle cells (PASMC), including alterations in Ca2+ homeostasis, Ca2+ sensitivity, and activation of transcription factors are thought to play prominent roles in the development of both vasoconstrictor and arterial remodeling components of hypoxia-associated PH. These changes in PASMC function are briefly reviewed in Sect. 1 and the influence of altered reactive oxygen species homeostasis on PASMC function discussed in Sects. 2-4.
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Affiliation(s)
- Nikki L Jernigan
- Department Cell Biology and Physiology, Vascular Physiology Group, University of New Mexico Health Sciences Center, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Thomas C Resta
- Department Cell Biology and Physiology, Vascular Physiology Group, University of New Mexico Health Sciences Center, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Laura V Gonzalez Bosc
- Department Cell Biology and Physiology, Vascular Physiology Group, University of New Mexico Health Sciences Center, University of New Mexico, Albuquerque, NM, 87131, USA.
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18
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Cho YY. RSK2 and its binding partners in cell proliferation, transformation and cancer development. Arch Pharm Res 2016; 40:291-303. [DOI: 10.1007/s12272-016-0880-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 12/17/2016] [Indexed: 12/31/2022]
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19
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Gabriel CH, Gross F, Karl M, Stephanowitz H, Hennig AF, Weber M, Gryzik S, Bachmann I, Hecklau K, Wienands J, Schuchhardt J, Herzel H, Radbruch A, Krause E, Baumgrass R. Identification of Novel Nuclear Factor of Activated T Cell (NFAT)-associated Proteins in T Cells. J Biol Chem 2016; 291:24172-24187. [PMID: 27637333 DOI: 10.1074/jbc.m116.739326] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 09/13/2016] [Indexed: 12/12/2022] Open
Abstract
Transcription factors of the nuclear factor of activated T cell (NFAT) family are essential for antigen-specific T cell activation and differentiation. Their cooperative DNA binding with other transcription factors, such as AP1 proteins (FOS, JUN, and JUNB), FOXP3, IRFs, and EGR1, dictates the gene regulatory action of NFATs. To identify as yet unknown interaction partners of NFAT, we purified biotin-tagged NFATc1/αA, NFATc1/βC, and NFATc2/C protein complexes and analyzed their components by stable isotope labeling by amino acids in cell culture-based mass spectrometry. We revealed more than 170 NFAT-associated proteins, half of which are involved in transcriptional regulation. Among them are many hitherto unknown interaction partners of NFATc1 and NFATc2 in T cells, such as Raptor, CHEK1, CREB1, RUNX1, SATB1, Ikaros, and Helios. The association of NFATc2 with several other transcription factors is DNA-dependent, indicating cooperative DNA binding. Moreover, our computational analysis discovered that binding motifs for RUNX and CREB1 are found preferentially in the direct vicinity of NFAT-binding motifs and in a distinct orientation to them. Furthermore, we provide evidence that mTOR and CHEK1 kinase activity influence NFAT's transcriptional potency. Finally, our dataset of NFAT-associated proteins provides a good basis to further study NFAT's diverse functions and how these are modulated due to the interplay of multiple interaction partners.
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Affiliation(s)
- Christian H Gabriel
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Fridolin Gross
- the Institute for Theoretical Biology, Charité and Humboldt University Berlin, 10015 Berlin
| | - Martin Karl
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | | | - Anna Floriane Hennig
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Melanie Weber
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Stefanie Gryzik
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | | | - Katharina Hecklau
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Jürgen Wienands
- the Institute of Cellular and Molecular Immunology, Georg-August-University of Göttingen, 37073 Göttingen, Germany
| | | | - Hanspeter Herzel
- the Institute for Theoretical Biology, Charité and Humboldt University Berlin, 10015 Berlin
| | - Andreas Radbruch
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin
| | - Eberhard Krause
- the Leibniz-Institut für Molekulare Pharmakologie, 13125 Berlin
| | - Ria Baumgrass
- From the German Rheumatism Research Center (DRFZ), Leibniz Institute, 10117 Berlin,
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20
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Wollebo HS, Cotto B, Adiga R, Langford D, White MK. Expression of Signaling Molecules in Progressive Multifocal Leukoencephalopathy. Curr HIV Res 2016; 14:47-53. [PMID: 26531763 DOI: 10.2174/1570162x1401151102125319] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 07/22/2015] [Accepted: 09/17/2015] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Progressive multifocal leukoencephalopathy (PML) is a debilitating demyelinating disease of the CNS caused by the infection and destruction of glial cells by JC virus (JCV) and is an AIDS-defining disease. Infection with JCV is common and most people acquire antibodies early in life. After initial infection, JCV remains in an asymptomatic persistent state and can be detected by PCR in many tissues including brain. A major question in PML pathogenesis is how the virus reactivates from persistence in HIV-1/AIDS. Our studies with primary cultures of glial cells have implicated transcription factors NF-κB and NFAT4, which bind to a unique site in the JCV noncoding control region and stimulate viral gene expression. Furthermore, these transcription factors are controlled by pathways downstream of proinflammatory cytokines, e.g., TNF-α activates NF-κB and stimulates JCV transcription. OBJECTIVES We hypothesize that HIV-1/PML initiation may involve reactivation of JCV by cytokine disturbances in the brain such as occur in HIV-1/AIDS. In this study, the objective was to evaluate HIV-1/PML clinical samples for expression of TNF-α and its receptors and subcellular localization of NF-κB p65 and NFAT4 compared to non-PML controls. METHODS We evaluated HIV-1/PML clinical samples and non-PML controls for expression of TNF-α and its receptors and subcellular localization of NF-κB p65 and NFAT4 using Western blot and immunohistochemistry. RESULTS Consistent with our hypothesis, compared to non-PML controls, HIV-1/PML tissue has high levels of TNF-α and TNFR1 expression and NF-κB and NFAT4 were preferentially localized to the nucleus. CONCLUSION The involvement of TNF-α/NF-κB/NFAT4 signaling in JCV regulation that we reported from experiments in cultured human glial cells may be clinically relevant in PML.
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Affiliation(s)
| | | | | | | | - Martyn K White
- Department of Neuroscience, Center for Neurovirology, Temple University School of Medicine, Philadelphia, Pennsylvania, USA.
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21
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JNK Signaling: Regulation and Functions Based on Complex Protein-Protein Partnerships. Microbiol Mol Biol Rev 2016; 80:793-835. [PMID: 27466283 DOI: 10.1128/mmbr.00043-14] [Citation(s) in RCA: 321] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The c-Jun N-terminal kinases (JNKs), as members of the mitogen-activated protein kinase (MAPK) family, mediate eukaryotic cell responses to a wide range of abiotic and biotic stress insults. JNKs also regulate important physiological processes, including neuronal functions, immunological actions, and embryonic development, via their impact on gene expression, cytoskeletal protein dynamics, and cell death/survival pathways. Although the JNK pathway has been under study for >20 years, its complexity is still perplexing, with multiple protein partners of JNKs underlying the diversity of actions. Here we review the current knowledge of JNK structure and isoforms as well as the partnerships of JNKs with a range of intracellular proteins. Many of these proteins are direct substrates of the JNKs. We analyzed almost 100 of these target proteins in detail within a framework of their classification based on their regulation by JNKs. Examples of these JNK substrates include a diverse assortment of nuclear transcription factors (Jun, ATF2, Myc, Elk1), cytoplasmic proteins involved in cytoskeleton regulation (DCX, Tau, WDR62) or vesicular transport (JIP1, JIP3), cell membrane receptors (BMPR2), and mitochondrial proteins (Mcl1, Bim). In addition, because upstream signaling components impact JNK activity, we critically assessed the involvement of signaling scaffolds and the roles of feedback mechanisms in the JNK pathway. Despite a clarification of many regulatory events in JNK-dependent signaling during the past decade, many other structural and mechanistic insights are just beginning to be revealed. These advances open new opportunities to understand the role of JNK signaling in diverse physiological and pathophysiological states.
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Expression of Twist2 is controlled by T-cell receptor signaling and determines the survival and death of thymocytes. Cell Death Differ 2016; 23:1804-1814. [PMID: 27391798 DOI: 10.1038/cdd.2016.68] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/24/2016] [Accepted: 06/08/2016] [Indexed: 12/15/2022] Open
Abstract
Self-reactive thymocytes are eliminated by negative selection, whereas competent thymocytes survive by positive selection. The strength of the T-cell receptor (TCR) signal determines the fate of thymocytes undergoing either positive or negative selection. The TCR signal strength is relatively higher in negative selection than in positive selection and induces pro-apoptotic molecules such as Nur77 and Nor-1, which are members of the orphan nuclear receptor family, that then cause TCR-mediated apoptosis. However, at the molecular level, it remains unclear how positive or negative selection is distinguished based on the TCR signal. We found that the expression of Twist2 is differentially regulated in positively and negatively selected thymocytes. In particular, TCR signal strength that elicits positive selection induces Twist2 expression via the Ca2+-Cacineurin-NFATc3 pathway, whereas strength of the TCR signal that results in negative selection abolishes NFATc3-dependent Twist2 induction via specific activation of the JNK pathway. Using Twist2-deficient and Twist2 transgenic mice, we also found that Twist2 determines thymocyte sensitivity to TCR-mediated apoptosis by regulating the expression of Nur77 and Nor-1. Twist2 partially retains histone deacetylase 7 (HDAC7) in the nucleus and recruits it to the Nur77 promoter region to repress Nur77 in positively selected thymocytes. Thus our results suggest a molecular mechanism of how thymocytes interpret the strength of the TCR signal and how TCR sensitivity is controlled during thymic selection.
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23
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Zhang J, Feng H, Zhao J, Feldman ER, Chen SY, Yuan W, Huang C, Akbari O, Tibbetts SA, Feng P. IκB Kinase ε Is an NFATc1 Kinase that Inhibits T Cell Immune Response. Cell Rep 2016; 16:405-418. [PMID: 27346349 DOI: 10.1016/j.celrep.2016.05.083] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/11/2016] [Accepted: 05/19/2016] [Indexed: 02/05/2023] Open
Abstract
Activation of nuclear factor of activated T cells (NFAT) is crucial for immune responses. IKKε is an IκB kinase (IKK)-related kinase, and the function of IKKε remains obscure in T cells, despite its abundant expression. We report that IKKε inhibits NFAT activation and T cell responses by promoting NFATc1 phosphorylation. During T cell activation, IKKε was transiently activated to phosphorylate NFATc1. Loss of IKKε elevated T cell antitumor and antiviral immunity and, therefore, reduced tumor development and persistent viral infection. IKKε was activated in CD8(+) T cells of mice bearing melanoma or persistently infected with a model herpesvirus. These results collectively show that IKKε promotes NFATc1 phosphorylation and inhibits T cell responses, identifying IKKε as a crucial negative regulator of T cell activation and a potential target for immunotherapy.
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Affiliation(s)
- Junjie Zhang
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Hao Feng
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA; Key Laboratory of Protein Chemistry and Developmental Biology of Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Jun Zhao
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Emily R Feldman
- Department of Molecular Genetics and Microbiology, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Si-Yi Chen
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Weiming Yuan
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Canhua Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Omid Akbari
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA
| | - Scott A Tibbetts
- Department of Molecular Genetics and Microbiology, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Pinghui Feng
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA.
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Liang SJ, Zeng DY, Mai XY, Shang JY, Wu QQ, Yuan JN, Yu BX, Zhou P, Zhang FR, Liu YY, Lv XF, Liu J, Ou JS, Qian JS, Zhou JG. Inhibition of Orai1 Store-Operated Calcium Channel Prevents Foam Cell Formation and Atherosclerosis. Arterioscler Thromb Vasc Biol 2016; 36:618-28. [PMID: 26916730 DOI: 10.1161/atvbaha.116.307344] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 02/14/2016] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To determine the role of orai1 store-operated Ca(2+) entry in foam cell formation and atherogenesis. APPROACH AND RESULTS Acute administration of oxidized low-density lipoprotein (oxLDL) activates an orai1-dependent Ca(2+) entry in macrophages. Chelation of intracellular Ca(2+), inhibition of orai1 store-operated Ca(2+) entry, or knockdown of orai1 dramatically inhibited oxLDL-induced upregulation of scavenger receptor A, uptake of modified LDL, and foam cell formation. Orai1-dependent Ca(2+) entry induces scavenger receptor A expression and foam cell formation through activation of calcineurin but not calmodulin kinase II. Activation of nuclear factor of activated T cells is not involved in calcineurin signaling to foam cell formation. However, oxLDL dephosohorylates and activates apoptosis signal-regulating kinase 1 in macrophages. Orai1 knockdown prevents oxLDL-induced apoptosis signal-regulating kinase 1 activation. Knockdown of apoptosis signal-regulating kinase 1, or inhibition of its downstream effectors, JNK and p38 mitogen-activated protein kinase, reduces scavenger receptor A expression and foam cell formation. Notably, orai1 expression is increased in atherosclerotic plaques of apolipoprotein E(-/-) mice fed with high-cholesterol diet. Knockdown of orai1 with adenovirus harboring orai1 siRNA or inhibition of orai1 Ca(2+) entry with SKF96365 for 4 weeks dramatically inhibits atherosclerotic plaque development in high-cholesterol diet feeding apolipoprotein E(-/-) mice. In addition, inhibition of orai1 Ca(2+) entry prevents macrophage apoptosis in atherosclerotic plaque. Moreover, the expression of inflammatory genes in atherosclerotic lesions and the infiltration of myeloid cells into the aortic sinus plaques are decreased after blocking orai1 signaling. CONCLUSIONS Orai1-dependent Ca(2+) entry promotes atherogenesis possibly by promoting foam cell formation and vascular inflammation, rendering orai1 Ca(2+) channel a potential therapeutic target against atherosclerosis.
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Affiliation(s)
- Si-Jia Liang
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - De-Yi Zeng
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Xiao-Yi Mai
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Jin-Yan Shang
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Qian-Qian Wu
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Jia-Ni Yuan
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Bei-Xin Yu
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Ping Zhou
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Fei-Ran Zhang
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Ying-Ying Liu
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Xiao-Fei Lv
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Jie Liu
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Jing-Song Ou
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.)
| | - Jie-Sheng Qian
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.).
| | - Jia-Guo Zhou
- From the Department of Pharmacology, Cardiac and Cerebrovascular Research Center (S.-J.L., D.-Y.Z., X.-Y.M., J.-Y.S., Q.-Q.W., J.-N.Y., B.-X.Y., F.-R.Z., Y.-Y.L., X.-F.L., J.L., J.-G.Z.) and Guangdong Province Key Laboratory of Brain Function and Disease (J.-G.Z.), Zhongshan School of Medicine, Division of Cardiac Surgery, The Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital (J.-S.O.), and Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital (J.-S.Q.), Sun Yat-Sen University, Guangzhou, China; and Department of Physiology and Pathophysiology, Dali University, Dali, China (P.Z.).
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Wang K, Zhang DL, Long B, An T, Zhang J, Zhou LY, Liu CY, Li PF. NFAT4-dependent miR-324-5p regulates mitochondrial morphology and cardiomyocyte cell death by targeting Mtfr1. Cell Death Dis 2015; 6:e2007. [PMID: 26633713 PMCID: PMC4720883 DOI: 10.1038/cddis.2015.348] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/10/2015] [Accepted: 11/02/2015] [Indexed: 12/19/2022]
Abstract
Emerging evidence suggest that the abnormal mitochondrial fission participates in pathogenesis of cardiac diseases, including myocardial infarction and heart failure. However, the molecular components regulating mitochondrial network in heart remain largely unidentified. Here we report that NFAT4, miR-324-5p and mitochondrial fission regulator 1 (Mtfr1) function in one signaling axis that regulates mitochondrial morphology and cardiomyocyte cell death. Knocking down Mtfr1 suppresses mitochondrial fission, apoptosis and myocardial infarction. Mtfr1 is a direct target of miR-324-5p, and miR-324-5p attenuates mitochondrial fission, cardiomyocyte apoptosis and myocardial infarction by suppressing Mtfr1 translation. Finally, we show that transcription factor NFAT4 inhibits miR-324-5p expression. Knockdown of NFAT4 suppresses mitochondrial fission and protects cardiomyocyte from apoptosis and myocardial infarction. Our study defines the NFAT4/ miR-324-5p/Mtfr1 axis, which participates in the regulation of mitochondrial fission and cardiomyocyte apoptosis, and suggests potential new treatment avenues for cardiac diseases.
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Affiliation(s)
- K Wang
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, China
| | - D-L Zhang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai, China
| | - B Long
- Laboratory of Molecular Medicine, Central Research Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - T An
- State Key Laboratory of Cardiovascular Disease, Heart Failure Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - J Zhang
- State Key Laboratory of Cardiovascular Disease, Heart Failure Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - L-Y Zhou
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, China
| | - C-Y Liu
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, China
| | - P-F Li
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao, China
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Weber S, Meyer-Roxlau S, Wagner M, Dobrev D, El-Armouche A. Counteracting Protein Kinase Activity in the Heart: The Multiple Roles of Protein Phosphatases. Front Pharmacol 2015; 6:270. [PMID: 26617522 PMCID: PMC4643138 DOI: 10.3389/fphar.2015.00270] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/28/2015] [Indexed: 12/19/2022] Open
Abstract
Decades of cardiovascular research have shown that variable and flexible levels of protein phosphorylation are necessary to maintain cardiac function. A delicate balance between phosphorylated and dephosphorylated states of proteins is guaranteed by a complex interplay of protein kinases (PKs) and phosphatases. Serine/threonine phosphatases, in particular members of the protein phosphatase (PP) family govern dephosphorylation of the majority of these cardiac proteins. Recent findings have however shown that PPs do not only dephosphorylate previously phosphorylated proteins as a passive control mechanism but are capable to actively control PK activity via different direct and indirect signaling pathways. These control mechanisms can take place on (epi-)genetic, (post-)transcriptional, and (post-)translational levels. In addition PPs themselves are targets of a plethora of proteinaceous interaction partner regulating their endogenous activity, thus adding another level of complexity and feedback control toward this system. Finally, novel approaches are underway to achieve spatiotemporal pharmacologic control of PPs which in turn can be used to fine-tune misleaded PK activity in heart disease. Taken together, this review comprehensively summarizes the major aspects of PP-mediated PK regulation and discusses the subsequent consequences of deregulated PP activity for cardiovascular diseases in depth.
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Affiliation(s)
- Silvio Weber
- Department of Pharmacology and Toxicology, Dresden University of Technology , Dresden, Germany
| | - Stefanie Meyer-Roxlau
- Department of Pharmacology and Toxicology, Dresden University of Technology , Dresden, Germany
| | - Michael Wagner
- Department of Pharmacology and Toxicology, Dresden University of Technology , Dresden, Germany
| | - Dobromir Dobrev
- Institute of Pharmacology, Faculty of Medicine, West German Heart and Vascular Center , Essen, Germany
| | - Ali El-Armouche
- Department of Pharmacology and Toxicology, Dresden University of Technology , Dresden, Germany
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Zeke A, Bastys T, Alexa A, Garai Á, Mészáros B, Kirsch K, Dosztányi Z, Kalinina OV, Reményi A. Systematic discovery of linear binding motifs targeting an ancient protein interaction surface on MAP kinases. Mol Syst Biol 2015; 11:837. [PMID: 26538579 PMCID: PMC4670726 DOI: 10.15252/msb.20156269] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Mitogen‐activated protein kinases (MAPK) are broadly used regulators of cellular signaling. However, how these enzymes can be involved in such a broad spectrum of physiological functions is not understood. Systematic discovery of MAPK networks both experimentally and in silico has been hindered because MAPKs bind to other proteins with low affinity and mostly in less‐characterized disordered regions. We used a structurally consistent model on kinase‐docking motif interactions to facilitate the discovery of short functional sites in the structurally flexible and functionally under‐explored part of the human proteome and applied experimental tools specifically tailored to detect low‐affinity protein–protein interactions for their validation in vitro and in cell‐based assays. The combined computational and experimental approach enabled the identification of many novel MAPK‐docking motifs that were elusive for other large‐scale protein–protein interaction screens. The analysis produced an extensive list of independently evolved linear binding motifs from a functionally diverse set of proteins. These all target, with characteristic binding specificity, an ancient protein interaction surface on evolutionarily related but physiologically clearly distinct three MAPKs (JNK, ERK, and p38). This inventory of human protein kinase binding sites was compared with that of other organisms to examine how kinase‐mediated partnerships evolved over time. The analysis suggests that most human MAPK‐binding motifs are surprisingly new evolutionarily inventions and newly found links highlight (previously hidden) roles of MAPKs. We propose that short MAPK‐binding stretches are created in disordered protein segments through a variety of ways and they represent a major resource for ancient signaling enzymes to acquire new regulatory roles.
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Affiliation(s)
- András Zeke
- Lendület Protein Interaction Group, Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
| | - Tomas Bastys
- Max Planck Institute for Informatics, Saarbrücken, Germany Graduate School of Computer Science, Saarland University, Saarbrücken, Germany
| | - Anita Alexa
- Lendület Protein Interaction Group, Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
| | - Ágnes Garai
- Lendület Protein Interaction Group, Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
| | - Bálint Mészáros
- Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
| | - Klára Kirsch
- Lendület Protein Interaction Group, Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
| | - Zsuzsanna Dosztányi
- MTA-ELTE Lendület Bioinformatics Research Group, Department of Biochemistry, Eötvös Loránd University, Budapest, Hungary
| | | | - Attila Reményi
- Lendület Protein Interaction Group, Institute of Enzymology Research Center for Natural Sciences Hungarian Academy of Sciences, Budapest, Hungary
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The azetidine derivative, KHG26792 protects against ATP-induced activation of NFAT and MAPK pathways through P2X7 receptor in microglia. Neurotoxicology 2015; 51:198-206. [PMID: 26522449 DOI: 10.1016/j.neuro.2015.10.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/21/2015] [Accepted: 10/26/2015] [Indexed: 01/01/2023]
Abstract
Azetidine derivatives are of interest for drug development because they may be useful therapeutic agents. However, their mechanisms of action remain to be completely elucidated. Here, we have investigated the effects of 3-(naphthalen-2-yl(propoxy)methyl)azetidine hydrochloride (KHG26792) on ATP-induced activation of NFAT and MAPK through P2X7 receptor in the BV-2 mouse microglial cell line. KHG26792 decreased ATP-induced TNF-α release from BV-2 microglia by suppressing, at least partly, P2X7 receptor stimulation. KHG26792 also inhibited the ATP-induced increase in IL-6, PGE2, NO, ROS, CXCL2, and CCL3. ATP induced NFAT activation through P2X7 receptor, with KHG26792 reducing the ATP-induced NFAT activation. KHG26792 inhibited an ATP-induced increase in iNOS protein and ERK phosphorylation. KHG26792 prevented an ATP-induced increase in MMP-9 activity through the P2X7 receptor as a result of degradation of TIMP-1 by cathepsin B. Our data provide mechanistic insights into the role of KHG26792 in the inhibition of TNF-α produced via P2X7 receptor-mediated activation of NFAT and MAPK pathways in ATP-treated BV-2 cells. This study highlights the potential use of KHG26792 as a therapeutic agent for the many diseases of the CNS related to activated microglia.
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Hullmann JE, Grisanti LA, Makarewich CA, Gao E, Gold JI, Chuprun JK, Tilley DG, Houser SR, Koch WJ. GRK5-mediated exacerbation of pathological cardiac hypertrophy involves facilitation of nuclear NFAT activity. Circ Res 2014; 115:976-85. [PMID: 25332207 PMCID: PMC4258119 DOI: 10.1161/circresaha.116.304475] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 10/20/2014] [Indexed: 01/19/2023]
Abstract
RATIONALE G protein-coupled receptor kinases (GRKs) acting in the cardiomyocyte regulate important signaling events that control cardiac function. Both GRK2 and GRK5, the predominant GRKs expressed in the heart, have been shown to be upregulated in failing human myocardium. Although the canonical role of GRKs is to desensitize G protein-coupled receptors via phosphorylation, it has been demonstrated that GRK5, unlike GRK2, can reside in the nucleus of myocytes and exert G protein-coupled receptor-independent effects that promote maladaptive cardiac hypertrophy and heart failure. OBJECTIVE To explore novel mechanisms by which GRK5 acting in the nucleus of cardiomyocytes participates in pathological cardiac hypertrophy. METHODS AND RESULTS In this study, we have found that GRK5-mediated pathological cardiac hypertrophy involves the activation of the nuclear factor of activated T cells (NFAT) because GRK5 causes enhancement of NFAT-mediated hypertrophic gene transcription. Transgenic mice with cardiomyocyte-specific GRK5 overexpression activate an NFAT-reporter in mice basally and after hypertrophic stimulation, including transverse aortic constriction and phenylephrine treatment. Complimentary to this, GRK5 null mice exhibit less NFAT transcriptional activity after transverse aortic constriction. Furthermore, the loss of NFATc3 expression in the heart protected GRK5 overexpressing transgenic mice from the exaggerated hypertrophy and early progression to heart failure seen after transverse aortic constriction. Molecular studies suggest that GRK5 acts in concert with NFAT to increase hypertrophic gene transcription in the nucleus via GRK5's ability to bind DNA directly without a phosphorylation event. CONCLUSIONS GRK5, acting in a kinase independent manner, is a facilitator of NFAT activity and part of a DNA-binding complex responsible for pathological hypertrophic gene transcription.
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Affiliation(s)
- Jonathan E Hullmann
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Laurel A Grisanti
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Catherine A Makarewich
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Erhe Gao
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Jessica I Gold
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - J Kurt Chuprun
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Douglas G Tilley
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Steven R Houser
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA
| | - Walter J Koch
- From the Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA (J.E.H., J.I.G.); and Center for Translational Medicine (J.E.H., L.A.G., E.G. J.I.G., J.K.C., D.G.T., W.J.K.) and Cardiovascular Research Center (C.A.M., S.R.H.), Temple University School of Medicine, Philadelphia, PA.
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Abstract
Osteoclasts are unique cells that degrade the bone matrix. These large multinucleated cells differentiate from the monocyte/macrophage lineage upon stimulation by two essential cytokines, macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor-kappa B (NF-κB) ligand (RANKL). Activation of transcription factors such as microphthalmia transcription factor (MITF), c-Fos, NF-κB, and nuclear factor-activated T cells c1 (NFATc1) is required for sufficient osteoclast differentiation. In particular, NFATc1 plays the role of a master transcription regulator of osteoclast differentiation. To date, several mechanisms, including transcription, methylation, ubiquitination, acetylation, and non-coding RNAs, have been shown to regulate expression and activation of NFATc1. In this review, we have summarized the various mechanisms that control NFATc1 regulation during osteoclast differentiation.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Korea
| | - Nacksung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Korea
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32
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Gozdecka M, Lyons S, Kondo S, Taylor J, Li Y, Walczynski J, Thiel G, Breitwieser W, Jones N. JNK suppresses tumor formation via a gene-expression program mediated by ATF2. Cell Rep 2014; 9:1361-74. [PMID: 25456131 DOI: 10.1016/j.celrep.2014.10.043] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 07/16/2014] [Accepted: 10/14/2014] [Indexed: 02/09/2023] Open
Abstract
JNK and p38 phosphorylate a diverse set of substrates and, consequently, can act in a context-dependent manner to either promote or inhibit tumor growth. Elucidating the functions of specific substrates of JNK and p38 is therefore critical for our understanding of these kinases in cancer. ATF2 is a phosphorylation-dependent transcription factor and substrate of both JNK and p38. Here, we show ATF2 suppresses tumor formation in an orthotopic model of liver cancer and cellular transformation in vitro. Furthermore, we find that suppression of tumorigenesis by JNK requires ATF2. We identify a transcriptional program activated by JNK via ATF2 and provide examples of JNK- and ATF2-dependent genes that block cellular transformation. Significantly, we also show that ATF2-dependent gene expression is frequently downregulated in human cancers, indicating that amelioration of JNK-ATF2-mediated suppression may be a common event during tumor development.
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Affiliation(s)
- Malgorzata Gozdecka
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK; Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Stephen Lyons
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK
| | - Saki Kondo
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK; Laboratory of Molecular Genetics, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Janet Taylor
- Central Manchester NHS Trust and University of Manchester, the Nowgen Centre, 29 Grafton Street, Manchester M13 9WU, UK; Applied Computational Biology and Bioinformatics Group, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK
| | - Yaoyong Li
- Applied Computational Biology and Bioinformatics Group, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK
| | - Jacek Walczynski
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, University of Saarland Medical Center, Building 44, 66421 Homburg, Germany
| | - Wolfgang Breitwieser
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK
| | - Nic Jones
- Department of Cell Regulation, CRUK Manchester Institute, Paterson Building, University of Manchester, Manchester M20 4BX, UK.
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Cisneros-Barroso E, Yance-Chávez T, Kito A, Sugiura R, Gómez-Hierro A, Giménez-Zaragoza D, Aligue R. Negative feedback regulation of calcineurin-dependent Prz1 transcription factor by the CaMKK-CaMK1 axis in fission yeast. Nucleic Acids Res 2014; 42:9573-87. [PMID: 25081204 PMCID: PMC4150787 DOI: 10.1093/nar/gku684] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Calcium signals trigger the translocation of the Prz1 transcription factor from the cytoplasm to the nucleus. The process is regulated by the calcium-activated phosphatase calcineurin, which activates Prz1 thereby maintaining active transcription during calcium signalling. When calcium signalling ceases, Prz1 is inactivated by phosphorylation and exported to the cytoplasm. In budding yeast and mammalian cells, different kinases have been reported to counter calcineurin activity and regulate nuclear export. Here, we show that the Ca(2+)/calmodulin-dependent kinase Cmk1 is first phosphorylated and activated by the newly identified kinase CaMKK2 homologue, Ckk2, in response to Ca(2+). Then, active Cmk1 binds, phosphorylates and inactivates Prz1 transcription activity whilst at the same time cmk1 expression is enhanced by Prz1 in response to Ca(2+). Furthermore, Cdc25 phosphatase is also phosphorylated by Cmk1, inducing cell cycle arrest in response to an increase in Ca(2+). Moreover, cmk1 deletion shows a high tolerance to chronic exposure to Ca(2+), due to the lack of cell cycle inhibition and elevated Prz1 activity. This work reveals that Cmk1 kinase activated by the newly identified Ckk2 counteracts calcineurin function by negatively regulating Prz1 activity which in turn is involved in activating cmk1 gene transcription. These results are the first insights into Cmk1 and Ckk2 function in Schizosaccharomyces pombe.
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Affiliation(s)
- Eugenia Cisneros-Barroso
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Catalunya, Spain
| | - Tula Yance-Chávez
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Catalunya, Spain
| | - Ayako Kito
- Laboratory of Molecular Pharmacogenomics, School of Pharmaceutical Sciences, Kinki University, Kowakae, Higashi-Osaka 577-8502, Japan
| | - Reiko Sugiura
- Laboratory of Molecular Pharmacogenomics, School of Pharmaceutical Sciences, Kinki University, Kowakae, Higashi-Osaka 577-8502, Japan
| | - Alba Gómez-Hierro
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Catalunya, Spain
| | - David Giménez-Zaragoza
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Catalunya, Spain
| | - Rosa Aligue
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona 08036, Catalunya, Spain
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Qin JJ, Nag S, Wang W, Zhou J, Zhang WD, Wang H, Zhang R. NFAT as cancer target: mission possible? Biochim Biophys Acta Rev Cancer 2014; 1846:297-311. [PMID: 25072963 DOI: 10.1016/j.bbcan.2014.07.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 07/17/2014] [Accepted: 07/22/2014] [Indexed: 12/30/2022]
Abstract
The NFAT signaling pathway regulates various aspects of cellular functions; NFAT acts as a calcium sensor, integrating calcium signaling with other pathways involved in development and growth, immune response, and inflammatory response. The NFAT family of transcription factors regulates diverse cellular functions such as cell survival, proliferation, migration, invasion, and angiogenesis. The NFAT isoforms are constitutively activated and overexpressed in several cancer types wherein they transactivate downstream targets that play important roles in cancer development and progression. Though the NFAT family has been conclusively proved to be pivotal in cancer progression, the different isoforms play distinct roles in different cellular contexts. In this review, our discussion is focused on the mechanisms that drive the activation of various NFAT isoforms in cancer. Additionally, we analyze the potential of NFAT as a valid target for cancer prevention and therapy.
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Affiliation(s)
- Jiang-Jiang Qin
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Subhasree Nag
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Wei Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; Cancer Biology Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Jianwei Zhou
- Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 210029, PR China
| | - Wei-Dong Zhang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Hui Wang
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, PR China; Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, PR China
| | - Ruiwen Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; Cancer Biology Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA.
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35
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Javadov S, Jang S, Agostini B. Crosstalk between mitogen-activated protein kinases and mitochondria in cardiac diseases: therapeutic perspectives. Pharmacol Ther 2014; 144:202-25. [PMID: 24924700 DOI: 10.1016/j.pharmthera.2014.05.013] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/30/2014] [Indexed: 02/07/2023]
Abstract
Cardiovascular diseases cause more mortality and morbidity worldwide than any other diseases. Although many intracellular signaling pathways influence cardiac physiology and pathology, the mitogen-activated protein kinase (MAPK) family has garnered significant attention because of its vast implications in signaling and crosstalk with other signaling networks. The extensively studied MAPKs ERK1/2, p38, JNK, and ERK5, demonstrate unique intracellular signaling mechanisms, responding to a myriad of mitogens and stressors and influencing the signaling of cardiac development, metabolism, performance, and pathogenesis. Definitive relationships between MAPK signaling and cardiac dysfunction remain elusive, despite 30 years of extensive clinical studies and basic research of various animal/cell models, severities of stress, and types of stimuli. Still, several studies have proven the importance of MAPK crosstalk with mitochondria, powerhouses of the cell that provide over 80% of ATP for normal cardiomyocyte function and play a crucial role in cell death. Although many questions remain unanswered, there exists enough evidence to consider the possibility of targeting MAPK-mitochondria interactions in the prevention and treatment of heart disease. The goal of this review is to integrate previous studies into a discussion of MAPKs and MAPK-mitochondria signaling in cardiac diseases, such as myocardial infarction (ischemia), hypertrophy and heart failure. A comprehensive understanding of relevant molecular mechanisms, as well as challenges for studies in this area, will facilitate the development of new pharmacological agents and genetic manipulations for therapy of cardiovascular diseases.
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Affiliation(s)
- Sabzali Javadov
- Department of Physiology, School of Medicine, University of Puerto Rico, PR, USA.
| | - Sehwan Jang
- Department of Physiology, School of Medicine, University of Puerto Rico, PR, USA
| | - Bryan Agostini
- Department of Physiology, School of Medicine, University of Puerto Rico, PR, USA
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36
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Abstract
Calcium ions are ubiquitous intracellular messengers. An increase in the cytosolic Ca(2+) concentration activates many proteins, including calmodulin and the Ca(2+)/calmodulin-dependent protein phosphatase calcineurin. The phosphatase is conserved from yeast to humans (except in plants), and many target proteins of calcineurin have been identified. The most prominent and best-investigated targets, however, are the transcription factors NFAT (nuclear factor of activated T cells) in mammals and Crz1 (calcineurin-responsive zinc finger 1) in yeast. In recent years, many orthologues of Crz1 have been identified and characterized in various species of fungi, amoebae, and other lower eukaryotes. It has been shown that the functions of calcineurin-Crz1 signaling, ranging from ion homeostasis through cell wall biogenesis to the building of filamentous structures, are conserved in the different organisms. Furthermore, frequency-modulated gene expression through Crz1 has been discovered as a striking new mechanism by which cells can coordinate their response to a signal. In this review, I focus on the latest findings concerning calcineurin-Crz1 signaling in fungi, amoebae and other lower eukaryotes. I discuss the potential of Crz1 and its orthologues as putative drug targets, and I also discuss possible parallels with calcineurin-NFAT signaling in mammals.
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37
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Walther S, Awad S, Lonchyna VA, Blatter LA. NFAT transcription factor regulation by urocortin II in cardiac myocytes and heart failure. Am J Physiol Heart Circ Physiol 2014; 306:H856-66. [PMID: 24441548 DOI: 10.1152/ajpheart.00353.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Urocortin II (UcnII), a cardioactive peptide with beneficial effects in normal and failing hearts, is also arrhythmogenic and prohypertrophic. We demonstrated that cardiac effects are mediated by a phosphatidylinositol-3 kinase (PI3K)/Akt kinase (Akt)/endothelial nitric oxide synthase (eNOS)/nitric oxide (NO) signaling pathways. Nuclear factor of activated T-cells (NFAT) transcription factors play a key role in the regulation of gene expression in cardiac development, maintenance of an adult differentiated cardiac phenotype, and remodeling processes in cardiac hypertrophy and heart failure (HF). We tested the hypothesis that UcnII differentially regulates NFAT activity in cardiac myocytes from both normal and failing hearts through the PI3K/Akt/eNOS/NO pathway. Isoforms NFATc1 and NFATc3 revealed different basal subcellular distribution in normal and HF rabbit ventricular myocytes with a nuclear NFATc1 and a cytosolic localization of NFATc3. However, in HF, the nuclear localization of NFATc1 was less pronounced, whereas the nuclear occupancy of NFATc3 was increased. In normal myocytes, UcnII induced nuclear export of NFATc1 and attenuated NFAT-dependent transcriptional activity but did not affect the distribution of NFATc3. In HF UcnII facilitated nuclear export of both isoforms and reduced transcriptional activity. NFAT regulation was mediated by a PI3K/Akt/eNOS/NO signaling cascade that converged on the activation of several kinases, including glycogen synthase kinase-3β (GSK3β), c-Jun NH2-terminal kinase (JNK), p38 mitogen-activated kinase (p38), and PKG, resulting in phosphorylation, deactivation, and nuclear export of NFAT. In conclusion, while NFATc1 and NFATc3 reveal distinct subcellular distribution patterns, both are regulated by the UcnII-PI3K/Akt/eNOS/NO pathway that converges on the activation of NFAT kinases and NFAT inactivation. The data reconcile cardioprotective and prohypertrophic UcnII effects mediated by different NFAT isoforms.
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Affiliation(s)
- Stefanie Walther
- Department of Molecular Biophysics and Physiology, Rush University Medical Center, Chicago, Illinois
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38
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Pan MG, Xiong Y, Chen F. NFAT gene family in inflammation and cancer. Curr Mol Med 2013; 13:543-54. [PMID: 22950383 DOI: 10.2174/1566524011313040007] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 08/04/2012] [Accepted: 08/10/2012] [Indexed: 01/28/2023]
Abstract
Calcineurin-NFAT signaling is critical for numerous aspects of vertebrate function during and after embryonic development. Initially discovered in T cells, the NFAT gene family, consisting of five members, regulates immune system, inflammatory response, angiogenesis, cardiac valve formation, myocardial development, axonal guidance, skeletal muscle development, bone homeostasis, development and metastasis of cancer, and many other biological processes. In this review we will focus on the NFAT literature relevant to the two closely related pathological systems: inflammation and cancer.
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Affiliation(s)
- M-G Pan
- Division of Oncology and Hematology, Kaiser Permanente Medical Center, Santa Clara, CA 95051, USA.
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39
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Zou T, Yang Y, Xia F, Huang A, Gao X, Fang D, Xiong S, Zhang J. Resveratrol Inhibits CD4+ T cell activation by enhancing the expression and activity of Sirt1. PLoS One 2013; 8:e75139. [PMID: 24073240 PMCID: PMC3779207 DOI: 10.1371/journal.pone.0075139] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Accepted: 08/10/2013] [Indexed: 12/15/2022] Open
Abstract
Resveratrol, a natural polyphenol compound, has broad effects on critical events, including inflammation, oxidation, cancer and aging. However, the function and molecular mechanisms of resveratrol on T cell activation are controversial. In the present study, we found that resveratrol significantly inhibits the activation and cytokine production of T cells in vitro and in vivo. Sirt1 expression was up-regulated in resveratrol-treated T cells. Once Sirt1 was down-regulated in the T cells, the resveratrol-induced inhibition of T cell activation noticeably diminished. The acetylation of c-Jun decreased and its translocation was impeded in the resveratrol-treated T cells. The incidence and severity of collagen-induced arthritis in the resveratrol-treated mice were considerably reduced.
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Affiliation(s)
- Ting Zou
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
| | - Yi Yang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
| | - Fei Xia
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
| | - Anfei Huang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
| | - Xiaoming Gao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
| | - Deyu Fang
- Department of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Sidong Xiong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
- * E-mail: (JPZ); (SDX)
| | - Jinping Zhang
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu Province, People’s Republic of China
- * E-mail: (JPZ); (SDX)
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Drawnel FM, Archer CR, Roderick HL. The role of the paracrine/autocrine mediator endothelin-1 in regulation of cardiac contractility and growth. Br J Pharmacol 2013; 168:296-317. [PMID: 22946456 DOI: 10.1111/j.1476-5381.2012.02195.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2012] [Revised: 08/23/2012] [Accepted: 08/28/2012] [Indexed: 12/20/2022] Open
Abstract
UNLABELLED Endothelin-1 (ET-1) is a critical autocrine and paracrine regulator of cardiac physiology and pathology. Produced locally within the myocardium in response to diverse mechanical and neurohormonal stimuli, ET-1 acutely modulates cardiac contractility. During pathological cardiovascular conditions such as ischaemia, left ventricular hypertrophy and heart failure, myocyte expression and activity of the entire ET-1 system is enhanced, allowing the peptide to both initiate and maintain maladaptive cellular responses. Both the acute and chronic effects of ET-1 are dependent on the activation of intracellular signalling pathways, regulated by the inositol-trisphosphate and diacylglycerol produced upon activation of the ET(A) receptor. Subsequent stimulation of protein kinases C and D, calmodulin-dependent kinase II, calcineurin and MAPKs modifies the systolic calcium transient, myofibril function and the activity of transcription factors that coordinate cellular remodelling. The precise nature of the cellular response to ET-1 is governed by the timing, localization and context of such signals, allowing the peptide to regulate both cardiomyocyte physiology and instigate disease. LINKED ARTICLES This article is part of a themed section on Endothelin. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2013.168.issue-1.
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Affiliation(s)
- Faye M Drawnel
- Babraham Research Campus, Babraham Institute, Cambridge, UK
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Design and synthesis of 1-aryl-5-anilinoindazoles as c-Jun N-terminal kinase inhibitors. Bioorg Med Chem Lett 2013; 23:2683-7. [DOI: 10.1016/j.bmcl.2013.02.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 02/13/2013] [Accepted: 02/19/2013] [Indexed: 01/05/2023]
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Kipanyula MJ, Woodhoo A, Rahman M, Payne D, Jessen KR, Mirsky R. Calcineurin-nuclear factor of activated T cells regulation of Krox-20 expression in Schwann cells requires elevation of intracellular cyclic AMP. J Neurosci Res 2013; 91:105-15. [PMID: 23073893 PMCID: PMC5722200 DOI: 10.1002/jnr.23131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 07/09/2012] [Accepted: 07/20/2012] [Indexed: 12/13/2022]
Abstract
The transcription factor Krox-20 (Egr2) is a master regulator of Schwann cell myelination. In mice from which calcineurin B had been excised in cells of the neural crest lineage, calcineurin-nuclear factor of activated T cells (NFAT) signaling was required for neuregulin-related Schwann cell myelination (Kao et al. [2009] Immunity 12:359-372). Whether NFAT signaling required simultaneous elevation of intracellular cAMP levels was not explored. In vivo, Krox-20 expression requires continuous axon-Schwann cell signaling that in Schwann cell cultures can be mimicked by elevation of intracellular cAMP. We have investigated the role of the calcineurin-NFAT pathway in Krox-20 induction in purified rat Schwann cell cultures. Activation of this pathway requires elevation of intracellular Ca(2+) levels. The calcium ionophore A23187 or ionomycin was used to increase intracellular Ca(2+) levels in Schwann cell cultures that had been treated with dibutyryl cAMP to induce Krox-20. Increase in Ca(2+) levels significantly potentiated Krox-20 induction, determined by Krox-20 immunolabeling of individual cells and Western blotting. Levels of the myelin proteins periaxin and P(0) were also elevated. The potentiating effect was blocked by cyclosporin A, a specific blocker of the calcineurin-NFAT pathway. We found that, in the absence of cAMP elevation, treatment with A23187 alone failed to induce Krox-20 expression, indicating that NFAT upregulation of Krox-20 requires elevation of cAMP levels in Schwann cells. P-VIVIT, another specific inhibitor of calcineurin-NFAT interaction, blocked Krox-20 induction in response to dibutyryl cAMP and ionophore. HA-NFAT1 (1-460)-GFP translocated to the nucleus on treatment with dibutyryl cAMP with or without added ionophore. NFAT isoforms 1-4 were detected in purified Schwann cells by quantitative RT-PCR.
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Affiliation(s)
- Maulilio J. Kipanyula
- Department of Veterinary Anatomy, Sokoine University of Agriculture, Chuo Kikuu, Morogoro, Tanzania
| | - Ashwin Woodhoo
- Metabolomics Unit, CICbioGune, Parque Tecnológico de Bizcaia, Derio, Bizcaia, Spain
| | - Mary Rahman
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Donna Payne
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Kristján R. Jessen
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Rhona Mirsky
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
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Yissachar N, Sharar Fischler T, Cohen AA, Reich-Zeliger S, Russ D, Shifrut E, Porat Z, Friedman N. Dynamic response diversity of NFAT isoforms in individual living cells. Mol Cell 2012; 49:322-30. [PMID: 23219532 DOI: 10.1016/j.molcel.2012.11.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 08/10/2012] [Accepted: 11/02/2012] [Indexed: 01/10/2023]
Abstract
Processing of external information by mammalian cells often involves seemingly redundant isoforms of signaling molecules and transcription factors. Understanding the functional relevance of coexpressed isoforms that respond to the same signal and control a shared set of genes is still limited. Here we show, using imaging of individual living mammalian cells, that the closely related transcription factors NFAT1 and NFAT4 possess distinct nuclear localization dynamics in response to cell stimulation. NFAT4 shows a fast response, with rapid stochastic bursts of nuclear localization. Burst frequency grows with signal level, while response amplitude is fixed. In contrast, NFAT1 has a slow, continuous response, and its amplitude increases with signal level. These diverse dynamical features observed for single cells are translated into different impulse response strategies at the cell population level. We suggest that dynamic response diversity of seemingly redundant genes can provide cells with enhanced capabilities of temporal information processing.
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Affiliation(s)
- Nissan Yissachar
- Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel
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44
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Garai Á, Zeke A, Gógl G, Törő I, Fördős F, Blankenburg H, Bárkai T, Varga J, Alexa A, Emig D, Albrecht M, Reményi A. Specificity of linear motifs that bind to a common mitogen-activated protein kinase docking groove. Sci Signal 2012; 5:ra74. [PMID: 23047924 DOI: 10.1126/scisignal.2003004] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mitogen-activated protein kinases (MAPKs) have a docking groove that interacts with linear "docking" motifs in binding partners. To determine the structural basis of binding specificity between MAPKs and docking motifs, we quantitatively analyzed the ability of 15 docking motifs from diverse MAPK partners to bind to c-Jun amino-terminal kinase 1 (JNK1), p38α, and extracellular signal-regulated kinase 2 (ERK2). Classical docking motifs mediated highly specific binding only to JNK1, and only those motifs with a sequence pattern distinct from the classical MAPK binding docking motif consensus differentiated between the topographically similar docking grooves of ERK and p38α. Crystal structures of four complexes of MAPKs with docking peptides, representing JNK-specific, ERK-specific, or ERK- and p38-selective binding modes, revealed that the regions located between consensus positions in the docking motifs showed conformational diversity. Although the consensus positions in the docking motifs served as anchor points that bound to common MAPK surface features and mostly contributed to docking in a nondiscriminatory fashion, the conformation of the intervening region between the anchor points mostly determined specificity. We designed peptides with tailored MAPK binding profiles by rationally changing the length and amino acid composition of intervening regions located between anchor points. These results suggest a coherent structural model for MAPK docking specificity that reveals how short linear motifs binding to a common kinase docking groove can mediate diverse interaction patterns and contribute to correct MAPK partner selection in signaling networks.
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Affiliation(s)
- Ágnes Garai
- Department of Biochemistry, Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary
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MicroRNA-350 induces pathological heart hypertrophy by repressing both p38 and JNK pathways. Biochim Biophys Acta Mol Basis Dis 2012; 1832:1-10. [PMID: 23000971 DOI: 10.1016/j.bbadis.2012.09.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 09/05/2012] [Accepted: 09/13/2012] [Indexed: 12/13/2022]
Abstract
Recent studies have identified important roles for microRNAs (miRNAs) in many cardiac pathophysiological processes, including the regulation of cardiomyocyte hypertrophy. However, the role of miR-350 in the cardiac setting is still unclear. The objective of this study is to determine whether miR-350 alone can induce pathological cardiac hypertrophy by repressing the SAPK pathway in cardiomyocytes. Here we report that miR-350 plays a key role in determining pathological cardiomyocyte hypertrophy and apoptosis. Comprehensive microarray profiling of miRs and qPCR showed that this unique miRNA was significantly up-regulated in rat hearts in response to late-stage transverse aortic constriction. Western blotting and luciferase assays confirmed that the target mRNAs of miR-350 are mitogen activated protein kinase (MAPK) 11/14 and MAPK8/9 gene transcripts. Gain-of-unction and loss-of-function approaches were used to investigate the functional roles of miR-350. The forced over-expression of miR-350 was sufficient to induce hypertrophy of cardiomyocytes through the posttranslational suppression of p38 and JNK protein synthesis. Moreover, miR-350 led to an increase in unphosphorylated NFATc3 and its nuclear translocation, resulting in the over-expression of pathological hypertrophy markers. As predicted, these effects could effectively be imitated by siR-JNK/p38 through the degeneration of p38 and JNK mRNAs. Conversely, antagomir-350 could lower the levels of miR-350, reverse the expression of target proteins and reduce cell size and apoptosis relative to the administration of mutant antagomir-350. Our data provide the first evidence that miR-350 is a critical regulator of pathological cardiac hypertrophy and apoptosis in rats.
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Esposito V, Manente L, Lucariello A, Perna A, Viglietti R, Gargiulo M, Parrella R, Parrella G, Baldi A, De Luca A, Chirianni A. Role of FAP48 in HIV‐associated lipodystrophy. J Cell Biochem 2012; 113:3446-54. [DOI: 10.1002/jcb.24221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Lucrezia Manente
- Department of Medicine and Public Health, Second University of Naples, Naples, Italy
| | - Angela Lucariello
- Department of Medicine and Public Health, Second University of Naples, Naples, Italy
| | - Angelica Perna
- Department of Medicine and Public Health, Second University of Naples, Naples, Italy
| | | | | | | | | | - Alfonso Baldi
- Department of Biochemistry, Section of Pathology, Second University of Naples, Naples, Italy
| | - Antonio De Luca
- Department of Medicine and Public Health, Second University of Naples, Naples, Italy
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Ulrich JD, Kim MS, Houlihan PR, Shutov LP, Mohapatra DP, Strack S, Usachev YM. Distinct activation properties of the nuclear factor of activated T-cells (NFAT) isoforms NFATc3 and NFATc4 in neurons. J Biol Chem 2012; 287:37594-609. [PMID: 22977251 DOI: 10.1074/jbc.m112.365197] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The Ca(2+)/calcineurin-dependent transcription factor NFAT (nuclear factor of activated T-cells) is implicated in regulating dendritic and axonal development, synaptogenesis, and neuronal survival. Despite the increasing appreciation for the importance of NFAT-dependent transcription in the nervous system, the regulation and function of specific NFAT isoforms in neurons are poorly understood. Here, we compare the activation of NFATc3 and NFATc4 in hippocampal and dorsal root ganglion neurons following electrically evoked elevations of intracellular Ca(2+) concentration ([Ca(2+)](i)). We find that NFATc3 undergoes rapid dephosphorylation and nuclear translocation that are essentially complete within 20 min, although NFATc4 remains phosphorylated and localized to the cytosol, only exhibiting nuclear localization following prolonged (1-3 h) depolarization. Knocking down NFATc3, but not NFATc4, strongly diminished NFAT-mediated transcription induced by mild depolarization in neurons. By analyzing NFATc3/NFATc4 chimeras, we find that the region containing the serine-rich region-1 (SRR1) mildly affects initial NFAT translocation, although the region containing the serine-proline repeats is critical for determining the magnitude of NFAT activation and nuclear localization upon depolarization. Knockdown of glycogen synthase kinase 3β (GSK3β) significantly increased the depolarization-induced nuclear localization of NFATc4. In contrast, inhibition of p38 or mammalian target of rapamycin (mTOR) kinases had no significant effect on nuclear import of NFATc4. Thus, electrically evoked [Ca(2+)](i) elevation in neurons rapidly and strongly activates NFATc3, whereas activation of NFATc4 requires a coincident increase in [Ca(2+)](i) and suppression of GSK3β, with differences in the serine-proline-containing region giving rise to these distinct activation properties of NFATc3 and NFATc4.
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Affiliation(s)
- Jason D Ulrich
- Department of Pharmacology, University of Iowa Carver College of Medicine, Iowa City, Iowa 52242, USA
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48
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Arsenault RJ, Li Y, Potter A, Griebel PJ, Kusalik A, Napper S. Induction of ligand-specific PrP (C) signaling in human neuronal cells. Prion 2012; 6:477-88. [PMID: 22918447 DOI: 10.4161/pri.21914] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Cellular prion protein (PrP (C) ) has attracted considerable attention for its role in transmissible spongiform encephalopathies (TSEs). In spite of being a point of intense research effort critical questions still remain regarding the physiological function of PrP (C) and how these functions may change with the conversion of the protein into the infectious and pathological conformation (PrP (Sc) ). While emerging evidence suggests PrP (C/Sc) are involved in signal transduction there is little consensus on the signaling pathways associated with the normal and diseased states. The purported involvement of PrP (C) in signal transduction, and the association of TSEs with neural pathology, makes kinome analysis of human neurons an interesting and appropriate model to characterize patterns of signal transduction following activation of PrP (C) by two commonly employed experimental ligands; antibody-induced dimerization by 6H4 and the amino acids 106-126 PrP peptide fragment (PrP 106-126). Analysis of the induced kinome responses reveals distinct patterns of signaling activity following each treatment. Specifically, stimulation of human neurons with the 6H4 antibody results in alterations in mitogen activated protein kinase (MAPK) signaling pathways while the 106-126 peptide activates growth factor related signaling pathways including vascular endothelial growth factor (VEGF) signaling and the phosphoinositide-3 kinase (PI3K) pathway. These pathways were validated through independent functional assays. Collectively these results indicate that stimulation of PrP (C) with distinct ligands, even within the same cell type, results in unique patterns of signaling. While this investigation highlights the apparent functional versatility of PrP (C) as a signaling molecule and may offer insight into cellular mechanisms of TSE pathology it also emphasizes the potential dangers associated with attributing activation of specific intracellular events to particular receptors through artificial models of receptor activation.
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Affiliation(s)
- Ryan J Arsenault
- Department of Biochemistry, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
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Pont JNA, McArdle CA, López Bernal A. Oxytocin-stimulated NFAT transcriptional activation in human myometrial cells. Mol Endocrinol 2012; 26:1743-56. [PMID: 22902539 PMCID: PMC3507519 DOI: 10.1210/me.2012-1057] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Oxytocin (OXT) is a peptide hormone that binds the OXT receptor on myometrial cells, initiating an intracellular signaling cascade, resulting in accumulation of intracellular calcium and smooth muscle contraction. In other systems, an elevation of intracellular Ca(2+) stimulates nuclear translocation of the transcription factor, nuclear factor of activated T cells (NFAT), which is transcriptionally active in arterial and ileal smooth muscle. Here we have investigated the role of NFAT in the mechanism of action of OXT. Human myometrial cells expressed all five NFAT isoforms (NFATC1-C4 and -5). Myometrial cells were transduced with a recombinant adenovirus expressing a NFATC1-EFP reporter, and a semi-automated imaging system was used to monitor effects of OXT on reporter localization in live cells. OXT induced a concentration-dependent nuclear translocation of NFATC1-EFP in a reversible manner, which was inhibited by OXT antagonists and calcineurin inhibitors. Pulsatile stimulation with OXT caused intermittent, pulse-frequency-dependent, nuclear translocation of NFATC1-EFP, which was more efficient than sustained stimulation. OXT induced nuclear translocation of endogenous NFAT that was transcriptionally active, because OXT stimulated activity of a NFAT-response element-luciferase reporter and induced calcineurin-NFAT dependent expression of RGS2, RCAN1, and PTGS2 (COX2) mRNA. Furthermore, OXT-dependent transcription was dependent on protein neosynthesis; cycloheximide abolished RGS2 transcription but augmented RCAN1 and COX2 transcriptional readouts. This study identifies a novel signaling mechanism within the myometrium, whereby calcineurin-NFAT signaling mediates OXT-induced transcriptional activity. Furthermore, we show NFATC1-EFP is responsive to pulses of OXT, a mechanism by which myometrial cells could decode OXT pulse frequency.
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Affiliation(s)
- Jason N A Pont
- Bristol University, School of Clinical Sciences, Dorothy Hodgkin Building, Whitson Street, Bristol BS1 3NY, United Kingdom.
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Sabapathy K. Role of the JNK pathway in human diseases. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 106:145-69. [PMID: 22340717 DOI: 10.1016/b978-0-12-396456-4.00013-4] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The c-Jun-NH(2)-terminal kinase (JNK) signaling pathway plays a critical role in regulating cell fate, being implicated in a multitude of diseases ranging from cancer to neurological and immunological/inflammatory conditions. Not surprisingly, therefore, it has been sought after for therapeutic intervention, and its inhibition has been shown to ameliorate many pathological conditions in experimental systems, paving the way for initial clinical trials. However, the fundamental problem in fully harnessing the potential provided by the JNK pathway has been the lack of specificity, due to the multiple JNK forms that are involved in multiple cellular processes in various cell types. Moreover, lack of sufficient knowledge of all JNK-interacting proteins and substrates has also hindered progress. This review will therefore focus on the role of the JNKs in human diseases and appraise the efforts to inhibit JNK signaling to ameliorate disease conditions, assessing potential challenges and providing insights into possible future directions to efficiently target this pathway for therapeutic use.
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Affiliation(s)
- Kanaga Sabapathy
- Division of Cellular & Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore
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