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Yin L, Liu MX, Wang FY, Wang X, Tang YH, Zhao QY, Wang T, Chen YT, Huang CX. Transcription Factor prrx1 Promotes Brown Adipose-Derived Stem Cells Differentiation to Sinus Node-Like Cells. DNA Cell Biol 2019; 38:1313-1322. [PMID: 31545082 DOI: 10.1089/dna.2019.4998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This study investigated whether overexpression of paired-related homeobox 1 (prrx1) can successfully induce differentiation of brown adipose-derived stem cells (BADSCs) into sinus node-like cells. The experiments were performed in two groups: adenovirus-green fluorescent protein (Ad-GFP) group and Ad-prrx1 group. After 5-7 days of adenoviral transfection, the expression levels of sinus node cell-associated pacing protein (hyperpolarization-activated cyclic nucleotide-gated potassium channel 4 [HCN4]) and ion channel (calcium channel, voltage-dependent, T type, alpha 1G subunit [Cacna1g]), as well as transcription factors (T-box 18 [TBX18], insulin gene enhancer binding protein 1 [ISL-1], paired-like homeodomain transcription factor 2 [pitx2], short stature homeobox 2 [shox2]), were detected by western blot and reverse transcription-quantitative polymerase chain reaction. Immunofluorescence assay was carried out to detect whether prrx1 was coexpressed with HCN4, TBX18, and ISL-1. Finally, whole-cell patch-clamp technique was used to record pacing current hyperpolarization-activated inward current (If). The isolated cells were CD90+, CD29+, and CD45-, indicating that pure BADSCs were successfully isolated. After 5-7 days of Ad transfection into cells, the mRNA levels and protein levels of pacing-related factors (TBX18, ISL-1, HCN4, shox2, and Cacna1g) in Ad-prrx1 group were significantly higher than those in Ad-GFP group. However, the expression level of pitx2 was decreased. Immunofluorescence analysis showed that prrx1 was coexpressed with TBX18, ISL-1, and HCN4 in the Ad-prrx1 group, which did not appear in the Ad-GFP group. Whole-cell patch clamps were able to record the If current in the experimental group rather than in the Ad-GFP group. Overexpression of prrx1 can successfully induce sinus node-like cells.
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Affiliation(s)
- Lin Yin
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Ming-Xin Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Feng-Yuan Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Xi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Yan-Hong Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Qing-Yan Zhao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Teng Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Yu-Ting Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
| | - Cong-Xin Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China.,Cardiovascular Research Institute, Wuhan University, Wuhan, P.R. China.,Hubei Key Laboratory of Cardiology, Wuhan, P.R. China
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