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Hasan AU, Obara M, Sato S, Kondo Y, Taira E. CD146/MCAM links doxorubicin-induced epigenetic dysregulation to the impaired fatty acid transportation in H9c2 cardiomyoblasts. Biochem Biophys Res Commun 2024; 693:149370. [PMID: 38100998 DOI: 10.1016/j.bbrc.2023.149370] [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: 11/23/2023] [Revised: 11/25/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
CD146/MCAM has garnered significant attention for its potential contribution to cardiovascular disease; however, the transcriptional regulation and functions remain unclear. To explore these processes regarding cardiomyopathy, we employed doxorubicin, a widely used stressor for cardiomyocytes. Our in vitro study on H9c2 cardiomyoblasts highlights that, besides impairing the fatty acid uptake in the cells, doxorubicin suppressed the expression of fatty acid binding protein 4 (Fabp4) along with the histone deacetylase 9 (Hdac9), bromodomain and extra-terminal domain proteins (BETs: Brd2 and Brd4), while augmented the production of CD146/MCAM. Silencing and chemical inhibition of Hdac9 further augmented CD146/MCAM and deteriorated fatty acid uptake. In contrast, chemical inhibition of BETs as well as silencing of MCAM/CD146 ameliorated fatty acid uptake. Moreover, protein kinase C (PKC) inhibition abrogated CD146/MCAM, particularly in the nucleus. Taken together, our results suggest that epigenetic dysregulation of Hdac9, Brd2, and Brd4 alters CD146/MCAM expression, deteriorating fatty acid uptake by downregulating Fabp4. This process depends on the PKC-mediated nuclear translocation of CD146. Thus, this study highlights a pivotal role of CD146/MCAM in doxorubicin-induced cardiomyopathy.
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Affiliation(s)
- Arif Ul Hasan
- Department of Pharmacology, School of Medicine, Iwate Medical University, Iwate, Japan; Department of Pharmacology, School of Medicine, International University of Health and Welfare, Chiba, Japan.
| | - Mami Obara
- Department of Pharmacology, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Sachiko Sato
- Department of Pharmacology, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Yukiko Kondo
- Department of Pharmacology, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Eiichi Taira
- Department of Pharmacology, School of Medicine, Iwate Medical University, Iwate, Japan
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Jiang RC, Zheng XY, Yang SL, Shi HJ, Xi JH, Zou YJ, Dou HQ, Wang YJ, Qin Y, Zhang XL, Xiao Q. CD146 mediates the anti-apoptotic role of Netrin-1 in endothelial progenitor cells under hypoxic conditions. Mol Med Rep 2021; 25:5. [PMID: 34738629 PMCID: PMC8600420 DOI: 10.3892/mmr.2021.12521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 09/21/2021] [Indexed: 01/18/2023] Open
Abstract
Modulating the biological status of endothelial progenitor cells (EPCs), such as function and survival, is essential for therapeutic angiogenesis in ischemic vascular disease environments. This study aimed to explore the role and molecular mechanisms underlying Netrin-1 in the viability and angiogenic function of EPCs. EPCs were isolated from the bone barrow of adult C57/BL6 mice. The apoptosis and various functions of EPCs were analyzed in vitro by manipulating the expression of Netrin-1. The TUNEL assay was performed to detect apoptotic EPCs. Cell migration and tube formation assays were performed to detect EPC function. Trypan blue staining was performed to detect cell viability. Western blot analysis was performed to detect the protein expression levels of Netrin-1, CD146 and apoptotic factors. Quantitative PCR analysis was performed to detect the expression levels of Netrin-1 receptors. The results demonstrated that treatment with exogenous Netrin-1 promoted EPC migration and tube formation, whereas transfection with small interfering (si)RNA targeting Netrin-1 exhibited the opposite effects. Exogenous Netrin-1 protected EPCs from hypoxia-induced apoptosis, whereas the interruption of endogenous Netrin-1 enhancement under hypoxia by Netrin-1-siRNA exacerbated the apoptosis of EPCs. Furthermore, CD146, one of the immunoglobulin receptors activated by Netrin-1, was screened for in the present study. Results demonstrated that CD146 did not participate in Netrin-1-promoted EPC function, but mediated the anti-apoptotic effects of Netrin-1 in EPCs. In conclusion, Netrin-1 enhanced the angiogenic function of EPCs and alleviated hypoxia-induced apoptosis, which was mediated by CD146. This biological function of Netrin-1 may provide a potential therapeutic option to promote EPCs for the treatment of ischemic vascular diseases.
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Affiliation(s)
- Ru-Chao Jiang
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Xue-Ying Zheng
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Sheng-Lan Yang
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Hai-Jie Shi
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Jia-Hui Xi
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Yong-Jian Zou
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Hua-Qian Dou
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Yun-Jing Wang
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Yuan Qin
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
| | - Xiao-Ling Zhang
- Department of Neonatology, Maternal and Children Hospital of Guangdong Province, Guangzhou, Guangdong 510260, P.R. China
| | - Qing Xiao
- Key Laboratory of Molecular Target and Clinical Pharmacology, School of Pharmaceutical Sciences and The Fifth Affiliated Hospital, Guangzhou, Guangdong 511436, P.R. China
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