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Jia M, Liu W, Zhang K, Wang Z, Li R, Pan J, Yang J, Wang D. Larixyl acetate, a TRPC6 inhibitor, attenuates pressure overload‑induced heart failure in mice. Mol Med Rep 2024; 29:49. [PMID: 38275127 DOI: 10.3892/mmr.2024.13174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
Heart failure is a primary cause of global mortality. In the present study, whether larixyl acetate, an inhibitor of transient receptor potential cation channel subfamily C member 6, attenuates pressure overload‑induced heart failure in mice was investigated. To test this hypothesis, a transverse aortic constriction (TAC) animal model and an angiotensin II (Ang II)‑treated H9c2 cell model were used. Cardiac and cellular structure, function and the expression levels of hypertrophy, endoplasmic reticulum (ER) stress, apoptosis, autophagy and pmTOR/mTOR related mRNAs or proteins were assessed to explore the underlying molecular mechanisms. The results indicated that treatment with TAC or Ang II leads to significant hypertrophy and dysfunction of the heart or H9c2 cells, accompanied by an increase in ER stress, apoptosis and activation of the mTOR signaling pathway, and a decrease in autophagy. The administration of larixyl acetate attenuated these impairments, which can be reversed by inhibiting autophagy through the activation of the mTOR signaling pathway. These findings suggested that larixyl acetate can effectively protect against pressure overload‑induced heart failure by enhancing autophagy and limiting ER stress and apoptosis through inhibition of the mTOR pathway.
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Affiliation(s)
- Min Jia
- Department of Anesthesiology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Zhengzhou, Henan 450052, P.R. China
| | - Wenxue Liu
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
| | - Keyin Zhang
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
| | - Zhigang Wang
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
| | - Ruisha Li
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
| | - Jun Pan
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
| | - Jianjun Yang
- Department of Anesthesiology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Zhengzhou, Henan 450052, P.R. China
| | - Dongjin Wang
- Department of Cardiothoracic Surgery, Institute of Cardiothoracic Vascular Disease, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu 210000, P.R. China
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