Inhibition of DNA Methyltransferase by RG108 Promotes Pluripotency-Related Character of Porcine Bone Marrow Mesenchymal Stem Cells.
Mesenchymal stem/stromal cells (MSCs) have been identified in almost all adult human tissues and been used in numerous clinical trials for a variety of diseases. Studies have shown that MSCs would undergo cellular senescence when cultured over a long term, which is brought on by increased epigenetic modifications, including DNA methylation. However, the mechanism of MSCs senescence is not well studied. In this study, the effects of RG108, a DNA methyltransferase inhibitor (DNMTi), on senescence, apoptosis, and pluripotency gene expressions in porcine bone marrow (pBM)-MSCs were investigated. First, we determined the optimized dose and time of RG108 treatment in pBM-MSCs to be 10 μM for 48 hours, respectively. Under these conditions, the pluripotency genes (NANOG, POU5F1), the anti-senescence genes (TERT, bFGF), and the anti-apoptosis gene (BCL2) were increased, whereas the apoptotic gene (BAX) was decreased. RG108 protected against apoptosis when pBM-MSC induces apoptosis with H2O2 for 1.5 hours. We also found that RG108 significantly induced the expression of NANOG and POU5F1 by decreasing DNA methylation in gene promoter regions. These results indicate that an optimized dose of RG108 may promote the pluripotency-related character of pBM-MSCs through improving cellular anti-senescence, anti-apoptosis, and pluripotency, which provide a better cell origin for stem cell therapy.
['Li|Qi|Q|', 'Zhai|Yanhui|Y|', 'Man|Xiaxia|X|', 'Zhang|Sheng|S|', 'An|Xinglan|X|']
D000818:Animals D017209:Apoptosis D001854:Bone Marrow Cells D049109:Cell Proliferation D002478:Cells, Cultured D016922:Cellular Senescence D019175:DNA Methylation D015254:DNA Modification Methylases D044127:Epigenesis, Genetic D005786:Gene Expression Regulation D059630:Mesenchymal Stem Cells D000071317:Nanog Homeobox Protein D050814:Octamer Transcription Factor-3 D010797:Phthalimides D060888:Real-Time Polymerase Chain Reaction D013552:Swine D014364:Tryptophan
RG108 porcine bone marrow mesenchymal stem cells senescence apoptosis pluripotency