title: Downregulation of HDAC1 is involved in the cardiomyocyte differentiation from mesenchymal stem cells in a myocardial microenvironment.
abstract: Under myocardial microenvironment, bone marrow-derived mesenchymal stem cells (MSCs) can transdifferentiate into cardiomyocytes (CMs). However, the role of histone deacetylase 1 (HDAC1) in this directed differentiation process remains unclear. The current study is to determine the acetylation regulatory mechanisms that may be involved in the directed CM differentiation from MSCs. MSCs isolated from male Sprague-Dawley (SD) rats were marked with Ad-EGFP and co-cultured with CMs. Flow cytometry was used to sort EGFP-positive (EGFP+) MSCs from the co-culture system. Then, the expression of cardiac troponin T (cTnT) in these MSCs was detected by immunofluorescence assay. In addition, HDAC1 levels at different co-culture times were measured by quantitative real-time polymerase chain reaction (QT-PCR) and Western blotting. At 4 days after co-culture with CMs, the MSCs began to expression detectable levels of cTnT. The expression of HDAC1 in CMs was much lower than that in MSCs. After co-culture with CMs, the expression of HDAC1 in MSCs was significantly decreased in a time dependent manner. In addition, our recent study has also identified that knockdown of the HDAC1 could promote the directed differentiation of MSCs into CMs. The results suggest that HDAC1 has a negative correlation with cardiac cell differentiation from MSCs under a myocardial microenvironment. HDAC1 might play an important role in the directed differentiation of MSCs into CMs in heart.
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Dong-feng
authors.initials: DF
authors.lastname: Lu
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yao
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Zi-zhuo
authors.initials: ZZ
authors.lastname: Su
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Zhao-hua
authors.initials: ZH
authors.lastname: Zeng
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Xiao-wen
authors.initials: XW
authors.lastname: Xing
authors.affiliation: Department of Cardiology and Sino-US Cardiovascular Research Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
authors.forename: Zhi-yu
authors.initials: ZY
authors.lastname: He
authors.affiliation: Department of Pharmacology and Cardiovascular Research Center, Rush Medical College, Rush University, Chicago, Illinois, United States of America.
authors.forename: Chunxiang
authors.initials: C
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000378:metabolism; D018929:Cell Culture Techniques; D002454:Cell Differentiation / Q000235:genetics*; D060833:Cellular Microenvironment / Q000235:genetics*; D018920:Coculture Techniques; D015536:Down-Regulation; D015870:Gene Expression; D005786:Gene Expression Regulation; D017930:Genes, Reporter; D056284:Histone Deacetylase 1 / Q000235:genetics* / Q000378:metabolism; D008297:Male; D059630:Mesenchymal Stem Cells / Q000166:cytology*; D032383:Myocytes, Cardiac / Q000166:cytology* / Q000378:metabolism*; D010641:Phenotype; D012333:RNA, Messenger / Q000235:genetics; D051381:Rats; D014161:Transduction, Genetic; D020107:Troponin T / Q000235:genetics / Q000378:metabolism
chemical_list: D000954:Antigens, Surface; D012333:RNA, Messenger; D020107:Troponin T; D056284:Histone Deacetylase 1