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Zhao J, Qiu C, Wan R, Wang Q, Zhang Y, Yang D, Yang Y, Sun X. Inhibition of CIRBP represses the proliferation and migration of vascular smooth muscle cells via inhibiting Rheb/mTORC1 axis. Biochem Biophys Res Commun 2024; 725:150248. [PMID: 38870847 DOI: 10.1016/j.bbrc.2024.150248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 06/09/2024] [Indexed: 06/15/2024]
Abstract
The excessive migration and proliferation of vascular smooth muscle cells (VSMCs) plays a vital role in vascular intimal hyperplasia. CIRBP is involved in the proliferation of various cancer cells. This study was aimed to explore the role of CIRBP in the proliferation and migration of VSMCs. Adenovirus was used to interfere with cold-inducible RNA-binding protein (CIRBP) expression, while lentivirus was used to overexpress Ras homolog enriched in brain (Rheb). Western blotting and qRT-PCR were used to evaluate the expression of CIRBP, Rheb, and mechanistic target of rapamycin complex 1 (mTORC1) activity. The cell proliferation was determined by Ki67 immunofluorescence staining and CCK-8 assay. The wound healing assay was performed to assess cell migration. Additionally, immunohistochemistry was conducted to explore the role of CIRBP in intimal hyperplasia after vascular injury. We found that silencing CIRBP inhibited the proliferation and migration of VSMCs, decreased the expression of Rheb and mTORC1 activity. Restoration of mTORC1 activity via insulin or overexpression of Rheb via lentiviral transfection both attenuated the inhibitory effects of silencing CIRBP on the proliferation and migration of VSMCs. Moreover, Rheb overexpression abolished the inhibitory effect of silencing CIRBP on mTORC1 activity in VSMCs. CIRBP was upregulated in the injured carotid artery. Silencing CIRBP ameliorated intimal hyperplasia after vascular injury. In the summary, silencing CIRBP attenuates mTORC1 activity via reducing Rheb expression, thereby supressing the proliferation and migration of VSMCs and intimal hyperplasia after vascular injury.
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MESH Headings
- Mechanistic Target of Rapamycin Complex 1/metabolism
- Ras Homolog Enriched in Brain Protein/metabolism
- Ras Homolog Enriched in Brain Protein/genetics
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/pathology
- Cell Proliferation
- Cell Movement
- Animals
- RNA-Binding Proteins/metabolism
- RNA-Binding Proteins/genetics
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Myocytes, Smooth Muscle/cytology
- Cells, Cultured
- Signal Transduction
- Male
- Rats
- Rats, Sprague-Dawley
- Humans
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Affiliation(s)
- Jiaqi Zhao
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Chenming Qiu
- Department of Burn, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Rong Wan
- Department of Burn, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Qiang Wang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Yan Zhang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Dachun Yang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Yongjian Yang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China.
| | - Xiongshan Sun
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China.
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2
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Gao Y, Liu H, Zhou Y, Cai S, Zhang J, Sun J, Duan M. Cold inducible RNA binding protein-regulated mitochondria associated endoplasmic reticulum membranes-mediated Ca 2+ transport play a critical role in hypothermia cerebral resuscitation. Exp Neurol 2024; 379:114883. [PMID: 38992825 DOI: 10.1016/j.expneurol.2024.114883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/28/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
Cardiac arrest is a global health issue causing more deaths than many other diseases. Hypothermia therapy is commonly used to treat secondary brain injury resulting from cardiac arrest. Previous studies have shown that CIRP is induced in specific brain regions during hypothermia and inhibits mitochondrial apoptotic factors. However, the specific mechanisms by which hypothermia-induced CIRP exerts its anti-apoptotic effect are still unknown. This study aims to investigate the role of Cold-inducible RNA-binding protein (CIRP) in mitochondrial-associated endoplasmic reticulum membrane (MAM)-mediated Ca2+ transport during hypothermic brain resuscitation.We constructed a rat model of cardiac arrest and resuscitation and hippocampal neuron oxygen-glucose deprivation/reoxygenation model. We utilized shRNA transfection to interfere the expression of CIRP and observe the effect of CIRP on the structure and function of MAM.Hypothermia induced CIRP can reduce the apoptosis of hippocampal neurons, and improve the survival rate of rats. Hypothermia induced CIRP can reduce the expressions of calcium transporters IP3R and VDAC1 in MAM, reduce the concentration of calcium in mitochondria, decrease the expression of ROS, and stabilize the mitochondrial membrane potential. Immunofluorescence and immunocoprecipitation showed that CIRP could directly interact with IP3R-VDAC1 complex, thereby changing the structure of MAM, inhibiting calcium transportation and improving mitochondrial function in vivo and vitro.Both in vivo and in vitro experiments have confirmed that hypothermia induced CIRP can act on the calcium channel IP3R-VDAC1 in MAM, reduce the calcium overload in mitochondria, improve the energy metabolism of mitochondria, and thus play a role in neuron resuscitation. This study contributes to understanding hypothermia therapy and identifies potential targets for brain injury treatment.
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Affiliation(s)
- Yu Gao
- Department of Anesthesiology, Zhongda Hospital Southeast University, Nanjing 210000, Jiangsu, China
| | - Haoxin Liu
- Department of Anesthesiology, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing 210000, Jiangsu, China
| | - Yaqing Zhou
- Department of Pain Management, Affiliated Hospital of Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Shenquan Cai
- Department of Anesthesiology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu, China
| | - Jie Zhang
- Department of Anesthesiology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu, China
| | - Jie Sun
- Department of Anesthesiology, Zhongda Hospital Southeast University, Nanjing 210000, Jiangsu, China.
| | - Manlin Duan
- Department of Anesthesiology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210000, Jiangsu, China; Department of Anesthesiology, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing 210000, Jiangsu, China.
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3
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Zhang J, Liu T, Wei Y, Peng J, Zeng G, Zhong P. Upregulation of CIRP by its agonist prevents the development of heart failure in myocardial infarction rats. BMC Cardiovasc Disord 2024; 24:185. [PMID: 38539067 PMCID: PMC10967100 DOI: 10.1186/s12872-024-03852-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 03/20/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Downregulated expression of cold-inducible RNA binding protein (CIRP), a stress-response protein, has been demonstrated in the hearts of patients with heart failure (HF). However, whether CIRP plays a critical role in the pathogenesis of HF remains unknown. Zr17-2 is a recently identified CIRP agonist, which can enhance the expression of CIRP in hearts. Herein, we evaluated the effects of zr17-2 on the development of HF in a rat model of myocardial infarction (MI). METHODS Male SD rats were pretreated with CIRP agonist zr17-2 or vehicle saline for 6 consecutive days, followed by MI induction. 1-week post-MI, cardiac function, and structural and molecular changes were determined by echocardiography and molecular biology methods. RESULTS Excitingly, we found that pretreatment with zr17-2 significantly attenuated MI-induced cardiac dysfunction and dilation, coupled with reduced infarction size and cardiac remodeling. In addition, increased inflammatory response in the peri-infarcted heart including macrophage infiltration and the expression of inflammatory genes were all significantly decreased by zr17-2 pretreatment, suggesting an anti-inflammatory effect of zr17-2. Moreover, zr17-2 pretreatment also upregulated the antioxidant genes (e.g. NQO-1, Nrf2, and HO-1) level in the hearts. In isolated cultured cardiomyocytes, pretreatment with zr17-2 markedly attenuated cell injury and apoptosis induced by oxidative injury, along with elevation of Nrf2-related antioxidant genes and CIRP. However, silencing CIRP abolished zr17-2's antioxidant effects against oxidative injury, confirming that zr17-2's role is dependent on CIRP. CONCLUSION Collectively, our study suggests CIRP plays a crucial role in the development of HF and a beneficial effect of CIRP agonist in preventing MI-induced HF, possibly via anti-inflammatory and anti-oxidant pathways.
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Affiliation(s)
- Jingjing Zhang
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, Hubei, 430060, China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Tao Liu
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, Hubei, 430060, China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Yanzhao Wei
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, Hubei, 430060, China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Jianye Peng
- The Second Affiliated Hospital, Department of Cardiovascular Medicine, Hengyang Medical School, University of South China, Hengyang, China
- The Second Affiliated Hospital, Key laboratory of Heart Failure Prevention & Treatment of Hengyang, Hengyang Medical School, University of South China, Hengyang, 421001, China
- Clinical Medicine Research Center of Arteriosclerotic Disease of Hunan Province, University of South China, Hengyang, 421001, China
| | - Gaofeng Zeng
- The Second Affiliated Hospital, Department of Cardiovascular Medicine, Hengyang Medical School, University of South China, Hengyang, China.
- The Second Affiliated Hospital, Key laboratory of Heart Failure Prevention & Treatment of Hengyang, Hengyang Medical School, University of South China, Hengyang, 421001, China.
- Clinical Medicine Research Center of Arteriosclerotic Disease of Hunan Province, University of South China, Hengyang, 421001, China.
| | - Peng Zhong
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, Hubei, 430060, China.
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China.
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China.
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Ren FF, Zhao L, Jiang XY, Zhang JJ, Gou JM, Yu XY, Wu SJ, Li L. Sphingosylphosphorylcholine alleviates pressure overload-induced myocardial remodeling in mice via inhibiting CaM-JNK/p38 signaling pathway. Acta Pharmacol Sin 2024; 45:312-326. [PMID: 37833535 PMCID: PMC10789762 DOI: 10.1038/s41401-023-01168-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/13/2023] [Indexed: 10/15/2023] Open
Abstract
Apoptosis plays a critical role in the development of heart failure, and sphingosylphosphorylcholine (SPC) is a bioactive sphingolipid naturally occurring in blood plasma. Some studies have shown that SPC inhibits hypoxia-induced apoptosis in myofibroblasts, the crucial non-muscle cells in the heart. Calmodulin (CaM) is a known SPC receptor. In this study we investigated the role of CaM in cardiomyocyte apoptosis in heart failure and the associated signaling pathways. Pressure overload was induced in mice by trans-aortic constriction (TAC) surgery. TAC mice were administered SPC (10 μM·kg-1·d-1) for 4 weeks post-surgery. We showed that SPC administration significantly improved survival rate and cardiac hypertrophy, and inhibited cardiac fibrosis in TAC mice. In neonatal mouse cardiomyocytes, treatment with SPC (10 μM) significantly inhibited Ang II-induced cardiomyocyte hypertrophy, fibroblast-to-myofibroblast transition and cell apoptosis accompanied by reduced Bax and phosphorylation levels of CaM, JNK and p38, as well as upregulated Bcl-2, a cardiomyocyte-protective protein. Thapsigargin (TG) could enhance CaM functions by increasing Ca2+ levels in cytoplasm. TG (3 μM) annulled the protective effect of SPC against Ang II-induced cardiomyocyte apoptosis. Furthermore, we demonstrated that SPC-mediated inhibition of cardiomyocyte apoptosis involved the regulation of p38 and JNK phosphorylation, which was downstream of CaM. These results offer new evidence for SPC regulation of cardiomyocyte apoptosis, potentially providing a new therapeutic target for cardiac remodeling following stress overload.
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Affiliation(s)
- Fang-Fang Ren
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Lin Zhao
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Xian-Yun Jiang
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Jing-Jing Zhang
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Jia-Min Gou
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Xiao-Yu Yu
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Shu-Jin Wu
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Lei Li
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
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5
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Liu A, Zhang Y, Xun S, Zhou G, Hu J, Liu Y. Targeting of cold-inducible RNA-binding protein alleviates sepsis via alleviating inflammation, apoptosis and oxidative stress in heart. Int Immunopharmacol 2023; 122:110499. [PMID: 37392569 DOI: 10.1016/j.intimp.2023.110499] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/05/2023] [Accepted: 06/11/2023] [Indexed: 07/03/2023]
Abstract
A systemic inflammatory response is observed in patients undergoing shock and sepsis. This study aimed to explore the effects of cold-inducible RNA-binding protein (CIRP) on sepsis-associated cardiac dysfunction and the underlying mechanism. In vivo and in vitro lipopolysaccharide (LPS)-induced sepsis models were established in mice and neonatal rat cardiomyocytes (NRCMs), respectively. CRIP expressions were increased in the mouse heart and NRCMs treated with LPS. CIRP knockdown alleviated LPS-induced decreases of left ventricular ejection fraction and fractional shortening. CIRP downregulation attenuated the increases of inflammatory factors in the LPS-induced septic mouse heart, and NRCMs. The enhanced oxidative stress in the LPS-induced septic mouse heart and NRCMs was suppressed after CIRP knockdown. By contrast, CIRP overexpression yielded the opposite results. Our current study indicates that the knockdown of CIRP protects against sepsis-induced cardiac dysfunction through alleviating inflammation, apoptosis and oxidative stress of cardiomyocytes.
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Affiliation(s)
- Aijun Liu
- Department of Cardiology, Binhai People's Hospital, Yancheng 224500, China.
| | - Yonglin Zhang
- Department of Cardiology, Binhai People's Hospital, Yancheng 224500, China
| | - Shucan Xun
- Department of Cardiology, Binhai People's Hospital, Yancheng 224500, China
| | - Guangzhi Zhou
- Department of Cardiology, Binhai People's Hospital, Yancheng 224500, China
| | - Jing Hu
- Department of Pharmacy, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yun Liu
- Department of Intensive Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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6
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Zhong P, Peng J, Hu Y, Zhang J, Shen C. Mitochondrial derived peptide MOTS-c prevents the development of heart failure under pressure overload conditions in mice. J Cell Mol Med 2022; 26:5369-5378. [PMID: 36156853 DOI: 10.1111/jcmm.17551] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 07/06/2022] [Accepted: 07/23/2022] [Indexed: 11/29/2022] Open
Abstract
MOTS-c, a mitochondrial-derived peptide (MDP), has been shown to have multiple biological activities such as antioxidation, anti-inflammation, and anti-apoptosis properties. In the present study, we aimed at evaluating the therapeutic effect of MOTS-c peptide in an animal model of heart failure. The heart failure mouse model was made by transverse aortic constriction (TAC) operations. The MOTS-c peptide was administrated subcutaneously by using an osmotic pump. At the end of the animal experiment, cardiac function was evaluated by echocardiography, and heart tissues were subjected to histological and molecular analysis. In vitro cultured H9C2 cells were used to test the effects of MOTS-c overexpression on cell death in response to H2 O2 stimulation. Our study showed that MOTS-c peptide attenuated TAC-induced cardiac dysfunction and remodelling. In addition, the MOTS-c peptide reduced the inflammatory response and upregulated the antioxidant capacity, coupled with the activation of the AMPK pathway in the heart of the TAC mouse model. In in vitro cultured cardiac cells, overexpression of MOTS-c was shown to activate the AMPK pathway and protect cell apoptosis in response to H2 O2 stimulation. Taken together, our study suggested that MOTS-c peptides may have therapeutic potential in treating HF.
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Affiliation(s)
- Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jianye Peng
- The Second Affiliated Hospital, Department of Cardiovascu lar Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Yewen Hu
- Department of Cardiology, Ningbo First Hospital, Ningbo, China
| | - Jun Zhang
- Department of Emergency, Tongji Medical Collage, Wuhan Central Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Caijie Shen
- Department of Cardiology, Ningbo First Hospital, Ningbo, China
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7
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Downregulation of CIRP Prone Cells to Oxidative Injury via Regulating Nrf2 Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2416787. [PMID: 35800223 PMCID: PMC9256419 DOI: 10.1155/2022/2416787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/22/2022] [Accepted: 05/06/2022] [Indexed: 12/03/2022]
Abstract
Cold-inducible RNA-binding protein (CIRP) is a cellular stress-response protein, whose expression can be induced by a variety of stress conditions. Our previous study showed that intracellular CIRP is a protective factor against cellular oxidative stress and silencing of CIRP gene prone cells to apoptosis. However, the underlying mechanism remains unknown. The present study was aimed at investigating the possible mechanisms underlying the protective role of CIRP in oxidative stress injury. Herein, we used HEK293T cells as our cell model to investigate the relation between CIRP and the possible antioxidant pathways by using the latest genetic silencing technologies. Our results showed that silencing CIRP by using SaiRNA-based genetic silencing tool leads to the downregulation of Nrf2 and Nrf2-regulated antioxidant genes in HEK293T cells. Taken together, our study identified the antioxidant Nrf2 signaling pathway as a downstream target of CIRP, and silencing CIRP may prone cells to apoptosis by downregulating the Nrf2 antioxidant pathway in response to oxidative injury.
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8
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Luo Y, Tian L, Lian C, Xu Y. KLHL38 facilitates STS-induced apoptosis in HL-1 cells via myocardin degradation. IUBMB Life 2022; 74:446-462. [PMID: 35112472 DOI: 10.1002/iub.2602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/14/2021] [Accepted: 01/28/2022] [Indexed: 11/06/2022]
Abstract
Cardiac apoptosis has been identified as one of the main precipitating factors of heart failure (HF) throughout the whole course of progressive disease. Limited to the lack of diagnostic markers and effective drug targets, cardiac apoptosis is still a major clinical challenge. Here, we reveal a potential novel therapeutic target for cardiac apoptosis. In the cause of the study, we found that KLHL38 was highly expressed in cardiac tissue of heart failure patients via GEO data-mining, which was further verified in the heart tissue of TAC mice. Meanwhile, the expression of KLHL38 is negatively correlated with myocardin protein level, which is a key cardiac apoptosis regulator. The KLHL38 overexpression obviously promoted cardiomyocyte apoptosis treated with staurosporine (STS) by facilitation of myocardin's ubiquitylation and subsequent proteasomal degradation. These findings reveal a new therapeutic target which may provide a new theoretical foundation for the treatment of myocardial apoptosis in clinical practice.
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Affiliation(s)
- Ying Luo
- College of Biological Science and Technology, Hubei Minzu University, Enshi, Hubei, China.,Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic diseases, Hubei Minzu University, Enshi, Hubei, China
| | - Lei Tian
- College of Biological Science and Technology, Hubei Minzu University, Enshi, Hubei, China
| | - Chen Lian
- College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Yao Xu
- College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, Hubei, China
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9
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Kim YM, Hong S. Controversial roles of cold‑inducible RNA‑binding protein in human cancer (Review). Int J Oncol 2021; 59:91. [PMID: 34558638 DOI: 10.3892/ijo.2021.5271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/06/2021] [Indexed: 11/05/2022] Open
Abstract
Cold‑inducible RNA‑binding protein (CIRBP) is a cold‑shock protein comprised of an RNA‑binding motif that is induced by several stressors, such as cold shock, UV radiation, nutrient deprivation, reactive oxygen species and hypoxia. CIRBP can modulate post‑transcriptional regulation of target mRNA, which is required to control DNA repair, circadian rhythms, cell growth, telomere integrity and cardiac physiology. In addition, the crucial function of CIRBP in various human diseases, including cancers and inflammatory disease, has been reported. Although CIRBP is primarily considered to be an oncogene, it may also serve a role in tumor suppression. In the present study, the controversial roles of CIRBP in various human cancers is summarized, with a focus on the interconnectivity between CIRBP and its target mRNAs involved in tumorigenesis. CIRBP may represent an important prognostic marker and therapeutic target for cancer therapy.
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Affiliation(s)
- Young-Mi Kim
- Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology, Gachon University, Incheon 21999, Republic of Korea
| | - Suntaek Hong
- Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology, Gachon University, Incheon 21999, Republic of Korea
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10
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Zhang J, Cao HY, Wang JQ, Wu GD, Wang L. Graphene Oxide and Reduced Graphene Oxide Exhibit Cardiotoxicity Through the Regulation of Lipid Peroxidation, Oxidative Stress, and Mitochondrial Dysfunction. Front Cell Dev Biol 2021; 9:616888. [PMID: 33816465 PMCID: PMC8012771 DOI: 10.3389/fcell.2021.616888] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/04/2021] [Indexed: 12/24/2022] Open
Abstract
Objective Graphene has been widely used for various biological and biomedical applications due to its unique physiochemical properties. This study aimed to evaluate the cardiotoxicity of graphene oxide (GO) and reduced GO (rGO) in vitro and in vivo, as well as to investigate the underlying toxicity mechanisms. Methods GO was reduced by gamma irradiation to prepare rGO and then characterized by UV/visible light absorption spectroscopy. Rat myocardial cells (H9C2) were exposed to GO or rGO with different absorbed radiation doses. The in vitro cytotoxicity was evaluated by MTT assay, cell apoptosis assay, and lactate dehydrogenase (LDH) activity assay. The effects of GO and rGO on oxidative damage and mitochondrial membrane potential were also explored in H9C2 cells. For in vivo experiments, mice were injected with GO or rGO. The histopathological changes of heart tissues, as well as myocardial enzyme activity and lipid peroxidation indicators in heart tissues were further investigated. Results rGO was developed from GO following different doses of gamma irradiation. In vitro experiments in H9C2 cells showed that compared with control cells, both GO and rGO treatment inhibited cell viability, promoted cell apoptosis, and elevated the LDH release. With the increasing radiation absorbed dose, the cytotoxicity of rGO gradually increased. Notably, GO or rGO treatment increased the content of ROS and reduced the mitochondrial membrane potential in H9C2 cells. In vivo experiments also revealed that GO or rGO treatment damaged the myocardial tissues and changed the activities of several myocardial enzymes and the lipid peroxidation indicators in the myocardial tissues. Conclusion GO exhibited a lower cardiotoxicity than rGO due to the structure difference, and the cardiotoxicity of GO and rGO might be mediated by lipid peroxidation, oxidative stress, and mitochondrial dysfunction.
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Affiliation(s)
- Jian Zhang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Hong-Yan Cao
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Ji-Qun Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Guo-Dong Wu
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Lin Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
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11
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Zhong P, Peng J, Bian Z, Huang H. The Role of Cold Inducible RNA-Binding Protein in Cardiac Physiology and Diseases. Front Pharmacol 2021; 12:610792. [PMID: 33716740 PMCID: PMC7943917 DOI: 10.3389/fphar.2021.610792] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/11/2021] [Indexed: 12/23/2022] Open
Abstract
Cold-inducible RNA-binding protein (CIRP) is an intracellular stress-response protein that can respond to various stress conditions by changing its expression and regulating mRNA stability. As an RNA-binding protein, CIRP modulates gene expression at the post-transcriptional level, including those genes involved in DNA repair, cellular redox metabolism, circadian rhythms, telomere maintenance, and cell survival. CIRP is expressed in a large variety of tissues, including testis, brain, lung, kidney, liver, stomach, bone marrow, and heart. Recent studies have observed the important role of CIRP in cardiac physiology and diseases. CIRP regulates cardiac electrophysiological properties such as the repolarization of cardiomyocytes, the susceptibility of atrial fibrillation, and the function of the sinoatrial node in response to stress. CIRP has also been suggested to protect cardiomyocytes from apoptosis under various stress conditions, including heart failure, high glucose conditions, as well as during extended heart preservation under hypothermic conditions. This review summarizes the findings of CIRP investigations in cardiac physiology and diseases and the underlying molecular mechanism.
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Affiliation(s)
- Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jianye Peng
- Department of Cardiovascular Medicine, The second Affiliated Hospital of University of South China, Hengyang, China
| | - Zhouyan Bian
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - He Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
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Boardman NT, Migally B, Pileggi C, Parmar GS, Xuan JY, Menzies K, Harper ME. Glutaredoxin-2 and Sirtuin-3 deficiencies impair cardiac mitochondrial energetics but their effects are not additive. Biochim Biophys Acta Mol Basis Dis 2020; 1867:165982. [PMID: 33002579 DOI: 10.1016/j.bbadis.2020.165982] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/06/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023]
Abstract
Altered redox biology and oxidative stress have been implicated in the progression of heart failure. Glutaredoxin-2 (GRX2) is a glutathione-dependent oxidoreductase and catalyzes the reversible deglutathionylation of mitochondrial proteins. Sirtuin-3 (SIRT3) is a class III histone deacetylase and regulates lysine acetylation in mitochondria. Both GRX2 and SIRT3 are considered as key in the protection against oxidative damage in the myocardium. Knockout of either contributes to adverse heart pathologies including hypertrophy, hypertension, and cardiac dysfunction. Here, we created and characterized a GRX2 and SIRT3 double-knockout mouse model, hypothesizing that their deletions would have an additive effect on oxidative stress, and exacerbate mitochondrial function and myocardial structural remodeling. Wildtype, single-gene knockout (Sirt3-/-, Grx2-/-), and double-knockout mice (Grx2-/-/Sirt3-/-) were compared in heart weight, histology, mitochondrial respiration and H2O2 production. Overall, the hearts from Grx2-/-/Sirt3-/- mice displayed increased fibrosis and hypertrophy versus wildtype. In the Grx2-/- and the Sirt3-/- we observed changes in mitochondrial oxidative capacity, however this was associated with elevated H2O2 emission only in the Sirt3-/-. Similar changes were observed but not worsened in hearts from Grx2-/-/Sirt3-/- mice, suggesting that these changes were not additive. In human myocardium, using genetic and histopathological data from the human Genotype-Tissue Expression consortium, we confirmed that SIRT3 expression correlates inversely with heart pathology. Altogether, GRX2 and SIRT3 are important in the control of cardiac mitochondrial redox and oxidative processes, but their combined absence does not exacerbate effects, consistent with the overall conclusion that they function together in the complex redox and antioxidant systems in the heart.
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Affiliation(s)
- Neoma T Boardman
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Department of Medical Biology, Faculty of Health Sciences, UiT-Arctic University of Norway, Tromsø, Norway
| | - Baher Migally
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Chantal Pileggi
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Gaganvir S Parmar
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Jian Ying Xuan
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Keir Menzies
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology and Immunology, Ottawa Institute of Systems Biology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
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Wu X, Li G, Gao P, Luo K, Zhou H, He Y, Yuan H. Multiple functions of cold-inducible RNA-binding protein in biological systems. VASCULAR INVESTIGATION AND THERAPY 2019. [DOI: 10.4103/vit.vit_13_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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