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Hu H, Xue J, Dong R, Zhao Y, Song C, Zhao H, Hescheler J, Zhang Y, Liang H. STAT3 Phosphorylation Mediating DMSO's Function on Fetal Cardiomyocyte Proliferation with Developmental Changes. Int Heart J 2019; 60:392-399. [PMID: 30745528 DOI: 10.1536/ihj.18-206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Endogenous cardiac regeneration has been focused for decades as a potential therapy for heart diseases with cell loss, and dimethyl sulfoxide (DMSO) has been proposed as a treatment for many diseases. In this study, we aimed to investigate the function of DMSO on fetal cardiomyocyte proliferation. By tracing BrdU+/α actinin+ cells or Ki67+/α actinin+ cells with immunohistochemical staining, we found that DMSO remarkably promoted fetal cardiomyocytes proliferation, and at the late developmental stage (LDS), such effects were more efficient than that at early developmental stage (EDS). Western blot data revealed a significant increase in STAT3 phosphorylation under DMSO treatments at LDS, while not at EDS. Consistently, STAT3 phosphorylation blocker STA21 could greatly reverse DMSO's function at LDS whereas hardly at EDS. Moreover, hearts at the EDS had less total STAT3 protein, but relatively much higher level of phosphorylated STAT3. This suggests that DMSO promote fetal cardiomyocytes proliferation, and STAT3 phosphorylation play a pivotal role in DMSO's function. With maturation, DMSO exerted a better ability to favor cardiomyocyte proliferation depending on STAT3 phosphorylation. Therefore, DMSO could serve as an effective, economic, and safe therapy for heart diseases with cell loss.
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Affiliation(s)
- Haitao Hu
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
| | - Jin Xue
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology.,Department of Pathology, School of Basic Medicine, Huazhong University of Science and Technology
| | - Renshun Dong
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
| | - Yanan Zhao
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
| | - Chunyan Song
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
| | - Hongjian Zhao
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
| | | | - Yan Zhang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
| | - Huamin Liang
- Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.,Institute of Brain Research, Huazhong University of Science and Technology
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Feridooni T, Pasumarthi KBS. Fractionation of embryonic cardiac progenitor cells and evaluation of their differentiation potential. Differentiation 2018; 105:1-13. [PMID: 30530197 DOI: 10.1016/j.diff.2018.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/24/2018] [Accepted: 11/22/2018] [Indexed: 12/19/2022]
Abstract
Mid-gestation mouse ventricles (E11.5) contain a larger number of Nkx2.5+ cardiac progenitor cells (CPCs). The proliferation rates are consistently higher in CPCs compared to myocyte population of developing ventricles. Recent studies suggested that CPCs are an ideal donor cell type for replacing damaged tissue in diseased hearts. Thus, the ability to isolate and expand CPCs from embryos or stem cell cultures could be useful for cell fate studies and regenerative therapies. Since embryonic CPCs possess fewer mitochondria compared to cardiomyocytes, we reasoned that CPCs can be fractionated using a fluorescent mitochondrial membrane potential dye (TMRM) and these cells may retain cardiomyogenic potential even in the absence of cardiomyocytes (CMs). FACS sorting of TMRM stained embryonic ventricular cells indicated that over 99% of cells in TMRM high fraction stained positive for sarcomeric myosin (MF20) and all of them expressed Nkx2.5. Although majority of cells present in TMRM low fraction expressed Nkx2.5, very few cells (~1%) stained positive for MF20. Further culturing of TMRM low cells over a period of 48 h showed a progressive increase in MF20 positive cells. Additional analyses revealed that MF20 negative cells in TMRM low fraction do not express markers for endothelial cells (vWF, CD31) or smooth muscle cells (SM myosin). Treatment of TMRM low cells with known cardiogenic factors DMSO and dynorphin B significantly increased the percentage of MF20+ cells compared to untreated cultures. Collectively, these studies suggest that embryonic CPCs can be separated as a TMRM low fraction and their differentiation potential can be enhanced by exogenous addition of known cardiomyogenic factors.
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Affiliation(s)
- Tiam Feridooni
- Department of Pharmacology, Dalhousie University, Sir Charles Tupper Building, 5850 College Street, P.O. Box 15000, Halifax, Nova Scotia, Canada B3H 4R2
| | - Kishore B S Pasumarthi
- Department of Pharmacology, Dalhousie University, Sir Charles Tupper Building, 5850 College Street, P.O. Box 15000, Halifax, Nova Scotia, Canada B3H 4R2.
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Shen X, Yang Q, Jin P, Li X. Alpha-lipoic acid enhances DMSO-induced cardiomyogenic differentiation of P19 cells. Acta Biochim Biophys Sin (Shanghai) 2014; 46:766-73. [PMID: 25112287 DOI: 10.1093/abbs/gmu057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Alpha-lipoic acid (α-LA) is a potent antioxidant that acts as an essential cofactor in mitochondrial dehydrogenase reactions. α-LA has been shown to possess anti-inflammatory and cytoprotective properties, and is used to improve symptoms of diabetic neuropathy. However, the role of α-LA in stem cell differentiation and the underlying molecular mechanisms remain unknown. In the present study, we showed that α-LA significantly promoted dimethyl sulfoxide (DMSO)-induced cardiomyogenic differentiation of mouse embryonic carcinoma P19 cells. α-LA dose dependently increased beating embryonic body (EB) percentages of DMSO-differentiated P19 cells. The expressions of cardiac specific genes TNNT2, Nkx2.5, GATA4, MEF2C, and MLC2V and cardiac isoform of troponin T (cTnT)-positively stained cell population were significantly up-regulated by the addition of α-LA. We also demonstrated that the differentiation time after EB formation was critical for α-LA to take effect. Interestingly, without DMSO treatment, α-LA did not stimulate the cardiomyogenic differentiation of P19 cells. Further investigation indicated that collagen synthesis-enhancing activity, instead of the antioxidative property, plays a significant role in the cardiomyogenic differentiation-promoting function of α-LA. These findings highlight the potential use of α-LA for regenerative therapies in heart diseases.
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Affiliation(s)
- Xinghua Shen
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Qinghui Yang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Peng Jin
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Xueqi Li
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150081, China
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Han S, Auger C, Thomas SC, Beites CL, Appanna VD. Mitochondrial Biogenesis and Energy Production in Differentiating Murine Stem Cells: A Functional Metabolic Study. Cell Reprogram 2014; 16:84-90. [DOI: 10.1089/cell.2013.0049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Sungwon Han
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
| | - Christopher Auger
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
| | - Sean C. Thomas
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
| | - Crestina L. Beites
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
- School of Midwifery, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
| | - Vasu D. Appanna
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6, Canada
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Parameswaran S, Kumar S, Verma RS, Sharma RK. Cardiomyocyte culture - an update on the in vitro cardiovascular model and future challenges. Can J Physiol Pharmacol 2013; 91:985-98. [PMID: 24289068 DOI: 10.1139/cjpp-2013-0161] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The success of any work with isolated cardiomyocytes depends on the reproducibility of cell isolation, because the cells do not divide. To date, there is no suitable in vitro model to study human adult cardiac cell biology. Although embryonic stem cells and induced pluripotent stem cells are able to differentiate into cardiomyocytes in vitro, the efficiency of this process is low. Isolation and expansion of human cardiomyocyte progenitor cells from cardiac surgical waste or, alternatively, from fetal heart tissue is another option. However, to overcome various issues related to human tissue usage, especially ethical concerns, researchers use large- and small-animal models to study cardiac pathophysiology. A simple model to study the changes at the cellular level is cultures of cardiomyocytes. Although primary murine cardiomyocyte cultures have their own advantages and drawbacks, alternative strategies have been developed in the last two decades to minimise animal usage and interspecies differences. This review discusses the use of freshly isolated murine cardiomyocytes and cardiomyocyte alternatives for use in cardiac disease models and other related studies.
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Affiliation(s)
- Sreejit Parameswaran
- a Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada
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