Transcription factor TBX18 promotes adult rat bone mesenchymal stem cell differentiation to biological pacemaker cells.

Transcription factor TBX18 promotes adult rat bone mesenchymal stem cell differentiation to biological pacemaker cells.
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DOI:
10.3892/ijmm.2017.3259
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发表时间:
2018-03
影响因子:
5.4
通讯作者:
Tang Y
Tang Y
中科院分区:
医学3区
文献类型:
--
作者:
Li Y;Yang M;Zhang G;Li L;Ye B;Huang C;Tang Y

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骨间充质干细胞(BMSCs)目前被认为是生物起搏器细胞转化的最佳干细胞。心脏特异性转录因子T-Box蛋白18 (TBX18)对窦房结(SAN)的形成至关重要,特别是产生诱发心脏收缩的电脉冲的头部区域的形成。本研究旨在证实TBX18对大鼠骨髓间充质干细胞生物起搏器分化的影响。利用流式细胞术鉴定骨髓间充质干细胞的表面标记物,以获得纯间充质干细胞。随后,用TBX18或绿色荧光蛋白腺病毒载体转染骨髓间充质干细胞。采用逆转录-定量聚合酶链反应、western blotting和免疫荧光技术,对TBX18、α-肌动蛋白、心肌肌钙蛋白I、超极化激活环核苷酸门控通道4和连接蛋白43等san特异性制造物的作用进行评价。结果表明,通过TBX18将骨髓间充质干细胞直接转化为生物起搏器细胞在心脏病学领域是一种可行的方法。
Bone mesenchymal stem cells (BMSCs) are currently considered the optimal stem cells for biological pacemaker cell transformation. The cardiac-specific transcription factor T-Box protein 18 (TBX18) is essential for sinoatrial node (SAN) formation, particularly formation of the head region that generates the electrical impulses that induce heart contraction. The present study aimed to confirm the effects of TBX18 on biological pace-maker differentiation of rat BMSCs. Flow cytometry was used to identify the surface markers of BMSCs, in order to acquire pure mesenchymal stem cells. Subsequently, BMSCs were transduced with TBX18 or green fluorescent protein adenovirus vectors. The effects of TBX18 were evaluated using SAN-specific makers including TBX18, α-actin, cardiac troponin I, hyperpolarization-activated cyclic nucleotide-gated channel 4 and connexin 43 by reverse transcription-quantitative polymerase chain reaction, western blotting and immunofluorescence. The findings demonstrated that direct conversion of BMSCs to biological pacemaker cells via TBX18 is a feasible method in the field of cardiology.
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