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Zhang L, Xiang Y, Cao C, Tan J, Li F, Yang X. Ciliary neurotrophic factor promotes the development of homocysteine-induced vascular endothelial injury through inflammation mediated by the JAK2/STAT3 signaling pathway. Exp Cell Res 2024; 440:114103. [PMID: 38848951 DOI: 10.1016/j.yexcr.2024.114103] [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: 04/25/2024] [Revised: 05/22/2024] [Accepted: 05/26/2024] [Indexed: 06/09/2024]
Abstract
Elevated homocysteine (Hcy) levels have been recognized as significant risk factor for cardiovascular and cerebrovascular diseases, closely related to endothelial injury. While expression of Ciliary Neurotrophic Factor (CNTF) significantly increases during Hcy-induced vascular endothelial cell injury, the precise molecular pathways through which CNTF operates remain to be clarified. To induce vascular endothelial cell injury, human umbilical vein endothelial cells (HUVECs) were treated with Hcy. Cell viability and apoptosis in HUVECs were assessed using the CCK-8 assay and flow cytometry. Western blot analysis determined the expression levels of the JAK2-STAT3 pathway, inflammation-related factors (IL-1β, NLRP3, ICAM-1, VCAM-1), and apoptosis-related factors (cleaved Caspase-3 and Bax). Immunofluorescence staining and western blotting were employed to examine CD31 and α-SMA expression. Knockdown of CNTF was achieved using lentiviral interference, and its effects on inflammation and cell injury were evaluated. Chromatin immunoprecipitation (ChIP) and dual luciferase reporter analysis were conducted to investigate the interaction between the MAFK and CNTF promoters. Our results indicated that Hcy induced high expression of CNTF and activated the JAK2-STAT3 signaling pathway, thereby upregulating factors associated with inflammation and cell apoptosis. Inhibiting CNTF alleviated Hcy-induced inflammation and cell injury. MAFK was identified as a transcription factor promoting CNTF transcription, and its overexpression exacerbated inflammation and cell injury in Hcy-treated HUVECs through the CNTF-JAK2-STAT3 axis, which could be reversed by knocking down CNTF. Activation of MAFK leads to CNTF upregulation, which activates the JAK2-STAT3 signaling pathway, regulating inflammation and inducing injury in Hcy-exposed vascular endothelial cells. Targeting CNTF or its upstream regulator MAFK may represent potential therapeutic strategies for mitigating endothelial dysfunction associated with hyperhomocysteinemia and cardiovascular diseases.
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Affiliation(s)
- Lijuan Zhang
- Department of Endocrinology, Putuo People's Hospital, School of Medicine, Tongji University, Shanghai, 200060, China
| | - Yan Xiang
- Department of Endocrinology, Shanghai Tongji Hospital, School of Medicine, Tongji University, Shanghai, China; Ouyang Road Community Health Service Center, Hongkou District, Shanghai, China
| | - Chengxiu Cao
- Department of Endocrinology, Putuo People's Hospital, School of Medicine, Tongji University, Shanghai, 200060, China
| | - Jiaorong Tan
- Department of Endocrinology, Putuo People's Hospital, School of Medicine, Tongji University, Shanghai, 200060, China
| | - Fei Li
- Department of Endocrinology, Putuo People's Hospital, School of Medicine, Tongji University, Shanghai, 200060, China
| | - Xin Yang
- Department of Endocrinology, Putuo People's Hospital, School of Medicine, Tongji University, Shanghai, 200060, China.
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Wu N, Shen C, Wang J, Chen X, Zhong P. MOTS-c Peptide Attenuated Diabetic Cardiomyopathy in STZ-Induced Type 1 Diabetic Mouse Model. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07540-2. [PMID: 38141139 DOI: 10.1007/s10557-023-07540-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) pathogenesis is a common complication of diabetes, but effective treatments remain limited. Mitochondrial-derived peptide MOTS-c has shown therapeutic promise in animal models of various heart diseases, but its efficacy in DCM is unknown. This study investigates the effects of MOTS-c treatment in a mouse model of type 1 diabetes-induced DCM. METHODS Type 1 diabetes (T1DM) was induced in mice by streptozotocin (STZ) injection. After diabetes establishment, the mice were randomly dividend into two groups treated with or without MOTS-c peptide, which was administered subcutaneously by osmotic pump for 12 weeks. At the end of the experiment, cardiac function, histology, and molecular changes were determined. RESULTS The results showed that diabetic mice exhibited significant cardiac dysfunction, dilatation, and adverse cardiac remodeling. MOTS-c treatment markedly ameliorated these diabetes-associated myocardial function and structure abnormalities. Additionally, MOTS-c reversed AMPK signaling deactivation and inhibited inflammation in the diabetic heart. CONCLUSIONS Our data demonstrated a protective effect of MOTS-c against diabetic cardiomyopathy potentially by activating the AMPK pathway and inhibiting inflammation. These findings demonstrate the therapeutic efficacy of MOTS-c for diabetic cardiomyopathy and warrant further investigation into its clinical potential.
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Affiliation(s)
- Nan Wu
- Department of Cardiovascular Medicine, The First Affliated Hospital of Ningbo University, Ningbo, 315000, Zhejiang, China
| | - Caijie Shen
- Department of Cardiovascular Medicine, The First Affliated Hospital of Ningbo University, Ningbo, 315000, Zhejiang, China
| | - Jian Wang
- Department of Cardiovascular Medicine, The First Affliated Hospital of Ningbo University, Ningbo, 315000, Zhejiang, China
| | - Xiaomin Chen
- Department of Cardiovascular Medicine, The First Affliated Hospital of Ningbo University, Ningbo, 315000, Zhejiang, China.
| | - Peng Zhong
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China.
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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: 8] [Impact Index Per Article: 4.0] [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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Zhong P, Peng J, Liu T, Ding HS. AAV9-Mediated Cardiac CNTF Overexpression Exacerbated Adverse Cardiac Remodeling in Streptozotocin-Induced Type 1 Diabetic Models. Cardiovasc Toxicol 2022; 22:88-96. [PMID: 34674150 DOI: 10.1007/s12012-021-09706-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 10/13/2021] [Indexed: 10/20/2022]
Abstract
Ciliary neurotrophic factor (CNTF), which is a neural peptide, has been reported to confer cardioprotective effects. However, whether CNTF-based gene delivery could prevent cardiac remodeling in diabetes mellitus remains unknown. In this study, we used adeno-associated viral vector serotype 9 (AAV9)-based cardiac gene delivery to test the effects of CNTF overexpression on adverse ventricular remodeling in streptozotocin-induced type 1 diabetic mice models. Postnatal (P3-P10) mice were peritoneally injected with AAV9 recombinant virus carrying the CNTF gene or EGFP gene. Then, type 1 diabetic models were established by peritoneal injection of streptozotocin (200 mg/kg) in 7-week-old female mice injected with AAV9. 4 weeks later after the establishment of type 1 diabetes mellitus, mouse hearts were removed to assess the degree of cardiac remodeling. We found that CNTF overexpression in mouse cardiomyocytes exacerbated cell apoptosis and cardiac fibrosis coupled with an increased inflammatory response in the heart tissue of diabetic female mice. Taken together, our results suggested that cardiac CNTF gene delivery may not be beneficial in alleviating adverse cardiac remodeling in type 1 diabetes female mice.
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Affiliation(s)
- Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China.
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China.
- Department of Cardiology Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China.
| | - Jianye Peng
- The Second Affiliated Hospital, Department of Cardiovascular Medicine, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
- The Second Affiliated Hospital, Key Laboratory of Heart Failure Prevention & Treatment of Hengyang, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Tao Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Hua-Sheng Ding
- Department of Emergency, Shenzhen Hospital, Southern Medical University, Shenzhen, 518101, People's Republic of China.
- Department of Emergency, Puren Hospital, Wuhan University of Science and Technology, Wuhan, 430081, People's Republic of China.
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