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Yao H, Xie Y, Li C, Liu W, Yi G. Mitochondria-Associated Organelle Crosstalk in Myocardial Ischemia/Reperfusion Injury. J Cardiovasc Transl Res 2024:10.1007/s12265-024-10523-9. [PMID: 38807004 DOI: 10.1007/s12265-024-10523-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/10/2024] [Indexed: 05/30/2024]
Abstract
Organelle damage is a significant contributor to myocardial ischemia/reperfusion (I/R) injury. This damage often leads to disruption of endoplasmic reticulum protein regulatory programs and dysfunction of mitochondrial energy metabolism. Mitochondria and endoplasmic reticulum are seamlessly connected through the mitochondrial-associated endoplasmic reticulum membrane (MAM), which serves as a crucial site for the exchange of organelles and metabolites. However, there is a lack of reports regarding the communication of information and metabolites between mitochondria and related organelles, which is a crucial factor in triggering myocardial I/R damage. To address this research gap, this review described the role of crosstalk between mitochondria and the correlative organelles such as endoplasmic reticulum, lysosomal and nuclei involved in reperfusion injury of the heart. In summary, this review aims to provide a comprehensive understanding of the crosstalk between organelles in myocardial I/R injury, with the ultimate goal of facilitating the development of targeted therapies based on this knowledge.
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Affiliation(s)
- Hui Yao
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, 28 Chang Sheng West Road, Hunan, 421001, China
| | - Yuxin Xie
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, 28 Chang Sheng West Road, Hunan, 421001, China
- Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, China
| | - Chaoquan Li
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, 28 Chang Sheng West Road, Hunan, 421001, China
| | - Wanting Liu
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, 28 Chang Sheng West Road, Hunan, 421001, China
- Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, China
| | - Guanghui Yi
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, 28 Chang Sheng West Road, Hunan, 421001, China.
- Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, China.
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Mao S, Song C, Huang H, Nie Y, Ding K, Cui J, Tian J, Tang H. Role of transcriptional cofactors in cardiovascular diseases. Biochem Biophys Res Commun 2024; 706:149757. [PMID: 38490050 DOI: 10.1016/j.bbrc.2024.149757] [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: 12/09/2023] [Revised: 02/16/2024] [Accepted: 03/04/2024] [Indexed: 03/17/2024]
Abstract
Cardiovascular disease is a main cause of mortality in the world and the highest incidence of all diseases. However, the mechanism of the pathogenesis of cardiovascular disease is still unclear, and we need to continue to explore its mechanism of action. The occurrence and development of cardiovascular disease is significantly associated with genetic abnormalities, and gene expression is affected by transcriptional regulation. In this complex process, the protein-protein interaction promotes the RNA polymerase II to the initiation site. And in this process of transcriptional regulation, transcriptional cofactors are responsible for passing cues from enhancers to promoters and promoting the binding of RNA polymerases to promoters, so transcription cofactors playing a key role in gene expression regulation. There is growing evidence that transcriptional cofactors play a critical role in cardiovascular disease. Transcriptional cofactors can promote or inhibit transcription by affecting the function of transcription factors. It can affect the initiation and elongation process of transcription by forming complexes with transcription factors, which are important for the stabilization of DNA rings. It can also act as a protein that interacts with other proteins to affect the expression of other genes. Therefore, the aim of this overview is to summarize the effect of some transcriptional cofactors such as BRD4, EP300, MED1, EZH2, YAP, SIRT6 in cardiovascular disease and to provide a promising therapeutic strategy for the treatment of cardiovascular disease.
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Affiliation(s)
- Shuqing Mao
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Chao Song
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Cardiovascular Lab of Big Data and Imaging Artificial Intelligence, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Hong Huang
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Yali Nie
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Kai Ding
- The First Affiliated Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Jian Cui
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Jinwei Tian
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.
| | - Huifang Tang
- Hunan Provincial Key Laboratory of Multi-omics and Artificial Intelligence of Cardiovascular Diseases, University of South China, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan, 421001, China; The First Affiliated Hospital, Institute of Cardiovascular Disease, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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Leng J, Wang C, Liang Z, Qiu F, Zhang S, Yang Y. An updated review of YAP: A promising therapeutic target against cardiac aging? Int J Biol Macromol 2024; 254:127670. [PMID: 37913886 DOI: 10.1016/j.ijbiomac.2023.127670] [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: 07/11/2023] [Revised: 09/05/2023] [Accepted: 10/23/2023] [Indexed: 11/03/2023]
Abstract
The transcriptional co-activator Yes-associated protein (YAP) functions as a downstream effector of the Hippo signaling pathway and plays a crucial role in cardiomyocyte survival. In its non-phosphorylated activated state, YAP binds to transcription factors, activating the transcription of downstream target genes. It also regulates cell proliferation and survival by selectively binding to enhancers and activating target genes. However, the upregulation of the Hippo pathway in human heart failure inhibits cardiac regeneration and disrupts astrogenesis, thus preventing the nuclear translocation of YAP. Existing literature indicates that the Hippo/YAP axis contributes to inflammation and fibrosis, potentially playing a role in the development of cardiac, vascular and renal injuries. Moreover, it is a key mediator of myofibroblast differentiation and fibrosis in the infarcted heart. Given these insights, can we harness YAP's regenerative potential in a targeted manner? In this review, we provide a detailed discussion of the Hippo signaling pathway and consolidate concepts for the development and intervention of cardiac anti-aging drugs to leverage YAP signaling as a pivotal target.
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Affiliation(s)
- Jingzhi Leng
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China
| | - Chuanzhi Wang
- College of Sports Science, South China Normal University, Guangzhou, China
| | - Zhide Liang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China
| | - Fanghui Qiu
- School of Physical Education, Qingdao University, China
| | - Shuangshuang Zhang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China.
| | - Yuan Yang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China.
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Zhang C, Zheng Z, Xu K, Cheng G, Wu H, Liu J. Proximal Tubular Lats2 Ablation Exacerbates Ischemia/Reperfusion Injury (IRI)-Induced Renal Maladaptive Repair through the Upregulation of P53. Int J Mol Sci 2023; 24:15258. [PMID: 37894939 PMCID: PMC10607662 DOI: 10.3390/ijms242015258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/06/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
The Hippo pathway mediates renal maladaptive repair after acute kidney injury (AKI), which has been considered a driving force in the progression to chronic kidney disease (CKD). LATS2, a core kinase of the Hippo pathway, exerts non-Hippo-dependent functions in the regulation of the cell cycle and cell fate, providing new insights into AKI and further repair. However, its role remains unknown. Here, we utilized a proximal tubular Lats2 conditional knockout mouse strain (Lats2-CKO) to evaluate the effect of LATS2 deficiency on ischemia/reperfusion-induced AKI-to-CKD transition. Lats2-CKO mice presented with more severe tubular maladaptive repair, inflammatory infiltration, interstitial fibrosis, and apoptosis following AKI. Importantly, we discovered that Lats2 ablation caused the activation of p53, with increased levels of cellular apoptotic molecules (p21, Bax, and cleaved caspase-3), and decreased levels of anti-apoptotic molecules (Bcl-2 and Bcl-xL). Pifithirin-α (p53 inhibitor) effectively attenuated renal fibrosis, inflammation, and apoptosis in Lats2-CKO mice after AKI. Consistently, in vitro Lats2 overexpression decreased p53, p21, Bax and cleaved caspase 3 expression after hypoxia/reoxygenation (H/R) treatment. Of note, the phosphorylation of MDM2, which promotes the ubiquitination degradation of p53, at site Ser186 was decreased in Lats2-CKO kidneys, but increased by Lats2 overexpression in vitro. Therefore, LATS2 deficiency aggravated ischemia/reperfusion injury (IRI)-induced maladaptive repair via regulating the tubular MDM2-p53 axis in AKI-to-CKD transition.
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Affiliation(s)
- Chi Zhang
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
- Laboratory of Nephropathy, Translational Medicine Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
- Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
| | - Zhihuang Zheng
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
- Laboratory of Nephropathy, Translational Medicine Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
- Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
| | - Kexin Xu
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
- Laboratory of Nephropathy, Translational Medicine Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
- Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
| | - Guozhe Cheng
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
- Laboratory of Nephropathy, Translational Medicine Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
- Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
| | - Huijuan Wu
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai 200030, China
| | - Jun Liu
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
- Laboratory of Nephropathy, Translational Medicine Center, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
- Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China
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Zheng M, Li RG, Song J, Zhao X, Tang L, Erhardt S, Chen W, Nguyen BH, Li X, Li M, Wang J, Evans SM, Christoffels VM, Li N, Wang J. Hippo-Yap Signaling Maintains Sinoatrial Node Homeostasis. Circulation 2022; 146:1694-1711. [PMID: 36317529 PMCID: PMC9897204 DOI: 10.1161/circulationaha.121.058777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The sinoatrial node (SAN) functions as the pacemaker of the heart, initiating rhythmic heartbeats. Despite its importance, the SAN is one of the most poorly understood cardiac entities because of its small size and complex composition and function. The Hippo signaling pathway is a molecular signaling pathway fundamental to heart development and regeneration. Although abnormalities of the Hippo pathway are associated with cardiac arrhythmias in human patients, the role of this pathway in the SAN is unknown. METHODS We investigated key regulators of the Hippo pathway in SAN pacemaker cells by conditionally inactivating the Hippo signaling kinases Lats1 and Lats2 using the tamoxifen-inducible, cardiac conduction system-specific Cre driver Hcn4CreERT2 with Lats1 and Lats2 conditional knockout alleles. In addition, the Hippo-signaling effectors Yap and Taz were conditionally inactivated in the SAN. To determine the function of Hippo signaling in the SAN and other cardiac conduction system components, we conducted a series of physiological and molecular experiments, including telemetry ECG recording, echocardiography, Masson Trichrome staining, calcium imaging, immunostaining, RNAscope, cleavage under targets and tagmentation sequencing using antibodies against Yap1 or H3K4me3, quantitative real-time polymerase chain reaction, and Western blotting. We also performed comprehensive bioinformatics analyses of various datasets. RESULTS We found that Lats1/2 inactivation caused severe sinus node dysfunction. Compared with the controls, Lats1/2 conditional knockout mutants exhibited dysregulated calcium handling and increased fibrosis in the SAN, indicating that Lats1/2 function through both cell-autonomous and non-cell-autonomous mechanisms. It is notable that the Lats1/2 conditional knockout phenotype was rescued by genetic deletion of Yap and Taz in the cardiac conduction system. These rescued mice had normal sinus rhythm and reduced fibrosis of the SAN, indicating that Lats1/2 function through Yap and Taz. Cleavage Under Targets and Tagmentation sequencing data showed that Yap potentially regulates genes critical for calcium homeostasis such as Ryr2 and genes encoding paracrine factors important in intercellular communication and fibrosis induction such as Tgfb1 and Tgfb3. Consistent with this, Lats1/2 conditional knockout mutants had decreased Ryr2 expression and increased Tgfb1 and Tgfb3 expression compared with control mice. CONCLUSIONS We reveal, for the first time to our knowledge, that the canonical Hippo-Yap pathway plays a pivotal role in maintaining SAN homeostasis.
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Affiliation(s)
- Mingjie Zheng
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston (M.Z., X.Z., S.E., W.C., Jun Wang)
| | - Rich G Li
- Texas Heart Institute, Houston (R.G.L., X.L.)
| | - Jia Song
- Department of Medicine (Section of Cardiovascular Research), Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX (J.S., N.L.)
| | - Xiaolei Zhao
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston (M.Z., X.Z., S.E., W.C., Jun Wang)
| | - Li Tang
- Hunan Provincial Key Lab on Bioinformatics, School of Computer Science and Engineering, Central South University, Changsha, Hunan, China (L.T., M.L., Jianxin Wang)
| | - Shannon Erhardt
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston (M.Z., X.Z., S.E., W.C., Jun Wang)
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, The University of Texas, Houston (S.E., Jun Wang)
| | - Wen Chen
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston (M.Z., X.Z., S.E., W.C., Jun Wang)
| | - Bao H Nguyen
- Department of Molecular Physiology and Biophysics (B.H.N.)
| | - Xiao Li
- Texas Heart Institute, Houston (R.G.L., X.L.)
| | - Min Li
- Hunan Provincial Key Lab on Bioinformatics, School of Computer Science and Engineering, Central South University, Changsha, Hunan, China (L.T., M.L., Jianxin Wang)
| | - Jianxin Wang
- Hunan Provincial Key Lab on Bioinformatics, School of Computer Science and Engineering, Central South University, Changsha, Hunan, China (L.T., M.L., Jianxin Wang)
| | - Sylvia M Evans
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Departments of Pharmacology and Medicine, University of California at San Diego, La Jolla (S.M.E.)
| | - Vincent M Christoffels
- Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, The Netherlands (V.M.C.)
| | - Na Li
- Department of Medicine (Section of Cardiovascular Research), Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX (J.S., N.L.)
| | - Jun Wang
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston (M.Z., X.Z., S.E., W.C., Jun Wang)
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, The University of Texas, Houston (S.E., Jun Wang)
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Li S, Wu P, Han B, Yang Q, Wang X, Li J, Deng N, Han B, Liao Y, Liu Y, Zhang Z. Deltamethrin induces apoptosis in cerebrum neurons of quail via promoting endoplasmic reticulum stress and mitochondrial dysfunction. ENVIRONMENTAL TOXICOLOGY 2022; 37:2033-2043. [PMID: 35446475 DOI: 10.1002/tox.23548] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 04/05/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
Deltamethrin (DLM) is a widely used and highly effective insecticide. DLM exposure is harmful to animal and human. Quail, as a bird model, has been widely used in the field of toxicology. However, there is little information available in the literature about quail cerebrum damage caused by DLM. Here, we investigated the effect of DLM on quail cerebrum neurons. Four groups of healthy quails were assigned (10 quails in each group), respectively given 0, 15, 30, and 45 mg/kg DLM by gavage for 12 weeks. Through the measurements of quail cerebrum, it was found that DLM exposure induced obvious histological changes, oxidative stress, and neurons apoptosis. To further explore the possible molecular mechanisms, we performed real-time quantitative PCR to detect the expression of endoplasmic reticulum (ER) stress-related mRNA such as glucose regulated protein 78 kD, activating transcription factor 6, inositol requiring enzyme, and protein kinase RNA (PKR)-like ER kinase. In addition, we detected ATP content in quail cerebrum to evaluate the functional status of mitochondria. The study showed that DLM exposure significantly increased the expression of ER stress-related mRNA and decreased ATP content in quail cerebrum tissues. These results suggest that chronic exposure to DLM induces apoptosis of quail cerebrum neurons via promoting ER stress and mitochondrial dysfunction. Furthermore, our results provide a novel explanation for DLM-induced apoptosis of avian cerebrum neurons.
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Affiliation(s)
- Siyu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, China
| | - Pengfei Wu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, China
| | - Bing Han
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Qingyue Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiaoqiao Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jiayi Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Ning Deng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Biqi Han
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yuge Liao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yan Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- School of Life Sciences, Inner Mongolia Minzu University, Tongliao, China
| | - Zhigang Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, China
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Deng W, Jin Q, Li L. Protective mechanism of demethylase fat mass and obesity-associated protein in energy metabolism disorder of hypoxia-reoxygenation-induced cardiomyocytes. Exp Physiol 2021; 106:2423-2433. [PMID: 34713923 DOI: 10.1113/ep089901] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/26/2021] [Indexed: 01/02/2023]
Abstract
NEW FINDINGS What is the central question of this study? What is the effect of fat mass and obesity-associated protein (FTO) on energy metabolism in hypoxia-reoxygenation (H/R)-induced cardiomyocytes? What is the main finding and its importance? FTO modification of N6 -methyladenosine (m6 A) is associated with myocardial cell energy metabolism disorder. FTO reduced the m6 A level of sarcoplasmic/endoplasmic reticulum calcium ATPase 2a (SERCA2a) mRNA through demethylation, thus promoting SERCA2a expression, maintaining calcium homeostasis, and improving energy metabolism of H/R cardiomyocytes. ABSTRACT Energy metabolism disorder is the initial physiological link of myocardial ischaemia-reperfusion injury. Fat mass and obesity-associated protein (FTO) is an N6 -methyladenosine (m6 A) demethylase implicated in several cardiac defects. This study sought to investigate the effect of FTO on energy metabolism in hypoxia-reoxygenation (H/R)-induced cardiomyocytes. FTO and sarcoplasmic/endoplasmic reticulum calcium ATPase 2a (SERCA2a) expression in H/R-induced cardiomyocytes were determined. Cardiomyocyte viability, cytotoxicity and apoptosis were measured. The total RNA and polyA+ RNA contents were isolated from cells. The m6 A level of RNA and the enrichment of m6 A of SERCA2a mRNA were calculated. Several indices such as the glycolytic potential, reactive oxygen species (ROS), mitochondrial activity and ATP content were evaluated. The concentration of calcium in cardiomyocytes was determined. FTO and SERCA2a were poorly expressed in H/R-induced cardiomyocytes. There was an elevated m6 A level in total RNA and enrichment of m6 A in SERCA2a mRNA. H/R treatment reduced the cell viability, mitochondrial membrane potential and ATP content in cardiomyocytes, but increased the cytotoxicity, apoptosis, ROS content and calcium concentration. Upregulation of FTO reversed the preceding findings with downregulation of the m6 A level of SERCA2a mRNA. Downregulation of SERCA2a annulled the promoting effect of FTO on calcium homeostasis and energy metabolism in H/R-induced cardiomyocytes. Collectively, the current study demonstrated that FTO reduced the m6 A level on SERCA2a mRNA through demethylation, thus promoting SERCA2a expression, maintaining calcium homeostasis and improving the energy metabolism of H/R cardiomyocytes.
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Affiliation(s)
- Wenzheng Deng
- Department of Cardiology, Chenzhou First People's Hospital, Chenzhou, Hunan, China
| | - Qiao Jin
- Department of Cardiovascular Medicine, Nanhua University affiliated Changsha Central Hospital, Changsha, Hunan, China
| | - Liang Li
- Department of Cardiovascular Medicine, Nanhua University affiliated Changsha Central Hospital, Changsha, Hunan, China
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Unfolded protein response during cardiovascular disorders: a tilt towards pro-survival and cellular homeostasis. Mol Cell Biochem 2021; 476:4061-4080. [PMID: 34259975 DOI: 10.1007/s11010-021-04223-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/08/2021] [Indexed: 12/13/2022]
Abstract
The endoplasmic reticulum (ER) is an organelle that orchestrates the production and proper assembly of an extensive types of secretory and membrane proteins. Endoplasmic reticulum stress is conventionally related to prolonged disruption in the protein folding machinery resulting in the accumulation of unfolded proteins in the ER. This disruption is often manifested due to oxidative stress, Ca2+ leakage, iron imbalance, disease conditions which in turn hampers the cellular homeostasis and induces cellular apoptosis. A mild ER stress is often reverted back to normal. However, cells retaliate to acute ER stress by activating the unfolded protein response (UPR) which comprises three signaling pathways, Activating transcription factor 6 (ATF6), inositol requiring enzyme 1 alpha (IRE1α), and protein kinase RNA-activated-like ER kinase (PERK). The UPR response participates in both protective and pro-apoptotic responses and not much is known about the mechanistic aspects of the switch from pro-survival to pro-apoptosis. When ER stress outpaces UPR response then cell apoptosis prevails which often leads to the development of various diseases including cardiomyopathies. Therefore, it is important to identify molecules that modulate the UPR that may serve as promising tools towards effective treatment of cardiovascular diseases. In this review, we elucidated the latest advances in construing the contribution imparted by the three arms of UPR to combat the adverse environment in the ER to restore cellular homeostasis during cardiomyopathies. We also summarized the various therapeutic agents that plays crucial role in tilting the UPR response towards pro-survival.
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Zou H, Liu G. Inhibition of endoplasmic reticulum stress through activation of MAPK/ERK signaling pathway attenuates hypoxia-mediated cardiomyocyte damage. J Recept Signal Transduct Res 2020; 41:532-537. [PMID: 33023351 DOI: 10.1080/10799893.2020.1831534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Huanxue Zou
- Department of Cardiology, Yuyao People’s Hospital, Yuyao, China
| | - Gang Liu
- Department of Cardiology, Yuyao People’s Hospital, Yuyao, China
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