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Moon SH, Cho YW, Shim HE, Choi JH, Jung CH, Hwang IT, Kang SW. Electrically stimulable indium tin oxide plate for long-term in vitro cardiomyocyte culture. Biomater Res 2020; 24:10. [PMID: 32514370 PMCID: PMC7251917 DOI: 10.1186/s40824-020-00189-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/10/2020] [Indexed: 12/16/2022] Open
Abstract
Background We investigated whether electrical stimulation via indium tin oxide (ITO) could enhance the in vitro culture of neonatal rat ventricular myocytes (NRVMs), which are important in vitro models for studying the mechanisms underlying many aspects of cardiology. Methods Cardiomyocytes were obtained from 1-day-old neonatal rat heart ventricles. To evaluate function of NRVMs cultured on ITO with electrical stimulation, the cell viability, change of cell morphology, immunochemistry using cardiac-specific antibodies, and gene expression were tested. Results Defined sarcomeric structure, cell enlargement, and increased distribution of NRVMs appeared in the presence of electrical stimulation. These characteristics were absent in NRVMs cultured under standard culture conditions. In addition, the expression levels of cardiomyocyte-specific and ion channel markers were higher in NRVMs seeded on ITO-coated dishes than in the control group at 14 days after seeding. ITO-coated dishes could effectively provide electrical cues to support the in vitro culture of NRVMs. Conclusions These results provide supporting evidence that electrical stimulation via ITO can be effectively used to maintain culture and enhance function of cardiomyocytes in vitro.
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Affiliation(s)
- Sung-Hwan Moon
- Department of Medical Science, School of Medicine, Konkuk University, Seoul, South Korea
| | - Young-Woo Cho
- Drug Safety and Toxicity Evaluation Team, New Drug Development Center, Osong Medical Innovation Foundation, Cheongju-Si, Chungbuk South Korea
| | - Hye-Eun Shim
- Research Group for Biomimetic Advanced Technology, Korea Institute of Toxicology, Daejeon, South Korea
| | - Jae-Hak Choi
- Department of Polymer Science and Engineering, Chungnam National University, Daejeon, South Korea
| | - Chan-Hee Jung
- Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeonbuk, South Korea
| | - In-Tae Hwang
- Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeonbuk, South Korea
| | - Sun-Woong Kang
- Research Group for Biomimetic Advanced Technology, Korea Institute of Toxicology, Daejeon, South Korea.,Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon, South Korea
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Yang D, Xi J, Xing Y, Tang X, Dai X, Li K, Li H, Lv X, Lu D, Wang H. A new method for neonatal rat ventricular myocyte purification using superparamagnetic iron oxide particles. Int J Cardiol 2018; 270:293-301. [PMID: 29908831 DOI: 10.1016/j.ijcard.2018.05.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Neonatal rat ventricular myocytes (NRVMs) have proven to be an ideal research model for cardiac disease. However, the current methods to purify NRVMs have a limitation to obtain high purity. The purpose of this study was to develop a NRVM purification method by using superparamagnetic iron oxide particles (SIOP). METHODS NRVMs were purified by using SIOP (SIOP group). The differential attachment with or without bromodeoxyuridine (BrdU) treatment served as control and BrdU groups, respectively. The Percoll gradient (Percoll) and magnetic-activated cell sorting (MACS) methods were performed to compare the purity and viability of NRVMs with SIOP method. RESULTS The SIOP group enriched NRVMs up to 93.9 ± 2.0% purity determined by flow cytometry (FCM) and 95.6 ± 1.3% by immunofluorescence count (IF). In contrast, the control group gave purities of 71.9 ± 2.9% (by FCM) and 66.8 ± 8.9% (by IF), and the BrdU group obtained 82.0 ± 1.3% (by FCM) and 83.1 ± 2.4% (by IF). The purity of SIOP-isolated NRVMs was not different from that of Percoll and MACS groups. However, the cardiomyocytes separated by these methods, except SIOP protocol, were mixed with intrinsic cardiac adrenergic cells. NRVMs purified by SIOP shaped the similar three-dimensional morphology, with no difference in cell yield, viability and cytosolic Ca2+ homeostasis at 24 h after isolation compared with NRVMs in other groups. Furthermore, SIOP-purified NRVMs retained the responses to phenylephrine and lipopolysaccharide challenge. CONCLUSION We first reported an efficient and novel method to purify NRVMs using SIOP, which may help accelerate innovative research in the field of cardiomyocyte biology.
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Affiliation(s)
- Duomeng Yang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Junmin Xi
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Yun Xing
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiangxu Tang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiaomeng Dai
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Kaiying Li
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Hongmei Li
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Xiuxiu Lv
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Daxiang Lu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China.
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Wu Y, Shi X, Li Y, Tian L, Bai R, Wei Y, Han D, Liu H, Xu J. Carbon Nanohorns Promote Maturation of Neonatal Rat Ventricular Myocytes and Inhibit Proliferation of Cardiac Fibroblasts: a Promising Scaffold for Cardiac Tissue Engineering. Nanoscale Res Lett 2016; 11:284. [PMID: 27263018 PMCID: PMC4893350 DOI: 10.1186/s11671-016-1464-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
Cardiac tissue engineering (CTE) has developed rapidly, but a great challenge remains in finding practical scaffold materials for the construction of engineered cardiac tissues. Carbon nanohorns (CNHs) may be a potential candidate due to their special structure and properties. The purpose of this study was to assess the effect of CNHs on the biological behavior of neonatal rat ventricular myocytes (NRVMs) for CTE applications. CNHs were incorporated into collagen to form growth substrates for NRVMs. Transmission electron microscopy (TEM) observations demonstrated that CNHs exhibited a good affinity to collagen. Moreover, it was found that CNH-embedded substrates enhanced adhesion and proliferation of NRVMs. Immunohistochemical staining, western blot analysis, and intracellular calcium transient measurements indicated that the addition of CNHs significantly increased the expression and maturation of electrical and mechanical proteins (connexin-43 and N-cadherin). Bromodeoxyuridine staining and a Cell Counting Kit-8 assay showed that CNHs have the ability to inhibit the proliferation of cardiac fibroblasts. These findings suggest that CNHs can have a valuable effect on the construction of engineered cardiac tissues and may be a promising scaffold for CTE.
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Affiliation(s)
- Yujing Wu
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China
| | - Xiaoli Shi
- National Center for Nanoscience and Technology, Beijing, 100080, China
| | - Yi Li
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China
| | - Lei Tian
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China
| | - Rui Bai
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China
| | - Yujie Wei
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China
| | - Dong Han
- National Center for Nanoscience and Technology, Beijing, 100080, China
| | - Huiliang Liu
- Department of Cardiology, General Hospital of Chinese People's Armed Police Forces, Yongding Road, Haidian District, Beijing, 100039, China.
| | - Jianxun Xu
- National Center for Nanoscience and Technology, Beijing, 100080, China.
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Huang H, Joseph LC, Gurin MI, Thorp EB, Morrow JP. Extracellular signal-regulated kinase activation during cardiac hypertrophy reduces sarcoplasmic/endoplasmic reticulum calcium ATPase 2 (SERCA2) transcription. J Mol Cell Cardiol 2014; 75:58-63. [PMID: 25008120 DOI: 10.1016/j.yjmcc.2014.06.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 06/23/2014] [Accepted: 06/26/2014] [Indexed: 10/25/2022]
Abstract
Pathologic cardiac hypertrophy can lead to heart failure, but the mechanisms involved are poorly understood. SERCA2 is critical for normal cardiac calcium handling and function and SERCA2 mRNA and protein levels are reduced by cardiac hypertrophy. We hypothesized that extracellular signal-regulated kinase (ERK) 1/2 activation during hypertrophy reduced SERCA2 transcription. Using a neonatal rat ventricular myocyte model of hypertrophy, we found that pharmacologic inhibitors of ERK activation preserve SERCA2 mRNA levels during hypertrophy. ERK activation is sufficient to reduce SERCA2 mRNA. We determined that ERK represses SERCA2 transcription via nuclear factor-kappaB (NFkB), and activation of NFkB is sufficient to reduce SERCA2 mRNA in cardiomyocytes. This work establishes novel connections between ERK, NFkB, and SERCA2 repression during cardiac hypertrophy. This mechanism may have implications for the progression of hypertrophy to heart failure.
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Affiliation(s)
- Haiyan Huang
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Leroy C Joseph
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Michael I Gurin
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Edward B Thorp
- Department of Pathology and Feinberg Cardiovascular Research Institute, Northwestern University, Feinberg School of Medicine, 300 E. Superior Street, Chicago, IL 60611, United States
| | - John P Morrow
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States.
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Tao H, Shi KH, Yang JJ, Huang C, Zhan HY, Li J. Histone deacetylases in cardiac fibrosis: current perspectives for therapy. Cell Signal 2013; 26:521-7. [PMID: 24321371 DOI: 10.1016/j.cellsig.2013.11.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 11/30/2013] [Accepted: 11/30/2013] [Indexed: 12/17/2022]
Abstract
Cardiac fibrosis is an important pathological feature of cardiac remodeling in heart diseases. The molecular mechanisms of cardiac fibrosis are unknown. Histone deacetylases (HDACs) are enzymes that balance the acetylation activities of histone acetyltransferases on chromatin remodeling and play essential roles in regulating gene transcription. In recent years, the role of HDACs in cardiac fibrosis initiation and progression, as well as the therapeutic effects of HDAC inhibitors, has been well studied. Moreover, numerous studies indicated that HDAC activity is associated with the development and progression of cardiac fibrosis. In this review, the innovative aspects of HDACs are discussed, with respect to biogenesis, their role in cardiac fibrosis. Furthermore, the potential applications of HDAC inhibitors in the treatment of cardiac fibrosis associated with fibroblast activation and proliferation.
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Affiliation(s)
- Hui Tao
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China; Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China
| | - Kai-Hu Shi
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China; Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China.
| | - Jing-Jing Yang
- School of Pharmacy, Anhui Medical University, Hefei 230032, China; Department of Pharmacology, The Second Hospital of Anhui Medical University, Hefei 230601, China
| | - Cheng Huang
- School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Hong-Ying Zhan
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China; Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Hefei 230032, China.
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