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Liu X, Yang Q, Zhu LH, Liu J, Deng KQ, Zhu XY, Liu Y, Gong J, Zhang P, Li S, Xia H, She ZG. Carboxyl-Terminal Modulator Protein Ameliorates Pathological Cardiac Hypertrophy by Suppressing the Protein Kinase B Signaling Pathway. J Am Heart Assoc 2018; 7:JAHA.118.008654. [PMID: 29945911 PMCID: PMC6064906 DOI: 10.1161/jaha.118.008654] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background Carboxyl‐terminal modulator protein (CTMP) has been implicated in cancer, brain injury, and obesity. However, the role of CTMP in pathological cardiac hypertrophy has not been identified. Methods and Results In this study, decreased expression of CTMP was observed in both human failing hearts and murine hypertrophied hearts. To further explore the potential involvement of CTMP in pathological cardiac hypertrophy, cardiac‐specific CTMP knockout and overexpression mice were generated. In vivo experiments revealed that CTMP deficiency exacerbated the cardiac hypertrophy, fibrosis, and function induced by pressure overload, whereas CTMP overexpression alleviated the response to hypertrophic stimuli. Consistent with the in vivo results, adenovirus‐mediated gain‐of‐function or loss‐of‐function experiments showed that CTMP also exerted a protective effect against hypertrophic responses to angiotensin II in vitro. Mechanistically, CTMP ameliorated pathological cardiac hypertrophy through the blockade of the protein kinase B signaling pathway. Moreover, inhibition of protein kinase B activation with LY294002 rescued the deteriorated effect in aortic banding–treated cardiac‐specific CTMP knockout mice. Conclusions Taken together, these findings imply, for the first time, that increasing the cardiac expression of CTMP may be a novel therapeutic strategy for pathological cardiac hypertrophy.
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MESH Headings
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cells, Cultured
- Disease Models, Animal
- Fibrosis
- Humans
- Hypertrophy, Left Ventricular/enzymology
- Hypertrophy, Left Ventricular/pathology
- Hypertrophy, Left Ventricular/physiopathology
- Hypertrophy, Left Ventricular/prevention & control
- Male
- Membrane Proteins/metabolism
- Mice, Knockout
- Myocytes, Cardiac/enzymology
- Myocytes, Cardiac/pathology
- Palmitoyl-CoA Hydrolase
- Proto-Oncogene Proteins c-akt/metabolism
- Rats, Sprague-Dawley
- Signal Transduction
- Thiolester Hydrolases/metabolism
- Ventricular Function, Left
- Ventricular Remodeling
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Affiliation(s)
- Xiaoxiong Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, China
- Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Qin Yang
- Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Li-Hua Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jia Liu
- Department of Cardiology, First Hospital of Jilin University, Changchun, China
| | - Ke-Qiong Deng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Xue-Yong Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Ye Liu
- Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Jun Gong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Peng Zhang
- Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Shuyan Li
- Department of Cardiology, First Hospital of Jilin University, Changchun, China
| | - Hao Xia
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, China
- Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Zhi-Gang She
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Institute of Model Animals of Wuhan University, Wuhan, China
- Basic Medical School, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
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Chang JW, Jung SN, Kim JH, Shim GA, Park HS, Liu L, Kim JM, Park J, Koo BS. Carboxyl-Terminal Modulator Protein Positively Acts as an Oncogenic Driver in Head and Neck Squamous Cell Carcinoma via Regulating Akt phosphorylation. Sci Rep 2016; 6:28503. [PMID: 27328758 PMCID: PMC4916413 DOI: 10.1038/srep28503] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 06/02/2016] [Indexed: 01/10/2023] Open
Abstract
The exact regulatory mechanisms of carboxyl-terminal modulator protein (CTMP) and its downstream pathways in cancer have been controversial and are not completely understood. Here, we report a new mechanism of regulation of Akt serine/threonine kinase, one of the most important dysregulated signals in head and neck squamous cell carcinoma (HNSCC) by the CTMP pathway and its clinical implications. We find that HNSCC tumor tissues and cell lines had relatively high levels of CTMP expression. Clinical data indicate that CTMP expression was significantly associated with positive lymph node metastasis (OR = 3.8, P = 0.033) and correlated with poor prognosis in patients with HNSCC. CTMP was also positively correlated with Akt/GSK-3β phosphorylation, Snail up-regulation and E-cadherin down-regulation, which lead to increased proliferation and epithelial-to-mesenchymal transition, suggesting that CTMP expression results in enhanced tumorigenic and metastatic properties of HNSCC cells. Moreover, CTMP suppression restores sensitivity to cisplatin chemotherapy. Intriguingly, all the molecular responses to CTMP regulation are identical regardless of p53 status in HNSCC cells. We conclude that CTMP promotes Akt phosphorylation and functions as an oncogenic driver and prognostic marker in HNSCC irrespective of p53.
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Affiliation(s)
- Jae Won Chang
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
| | - Seung-Nam Jung
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
| | - Ju-Hee Kim
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
| | - Geun-Ae Shim
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
| | - Hee Sung Park
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
| | - Lihua Liu
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jin Man Kim
- Research Institute for Medical Sciences and Pathology, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jongsun Park
- Department of Pharmacology, Metabolic Diseases and Cell Signaling Laboratory, Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Bon Seok Koo
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University, Daejeon, Republic of Korea
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