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RXRα and MRTF‐A have a synergistic effect in the retinoic acid‐induced neural‐like differentiation of adult bone marrow‐derived mesenchymal stem cells
Author(s) -
Luo Ying,
Liang Chen,
Liu Yu,
Liu Xiaopeng,
Xu Yao
Publication year - 2020
Publication title -
cell biology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.932
H-Index - 77
eISSN - 1095-8355
pISSN - 1065-6995
DOI - 10.1002/cbin.11331
Subject(s) - retinoic acid , retinoid x receptor , mesenchymal stem cell , transcription factor , microbiology and biotechnology , downregulation and upregulation , retinoic acid receptor , cellular differentiation , biology , tretinoin , chemistry , cancer research , nuclear receptor , biochemistry , gene
Mesenchymal stem cells (MSCs) have multilineage differentiation potential and can transform into neuron cells under an appropriate environment. Retinoic acid (RA) facilitates the neuronal differentiation of MSCs. We found that RXRα, a RA receptor, was significantly upregulated in RA‐induced process. Here, we show that RXRα collaborated with myocardin‐related transcription factor‐A (MRTF‐A) to strongly promote the RA‐induced process as evidenced by the increase in NF‐H expression and NF‐H promoter transcription activity. Our studies reveal that RXRα and MRTF‐A exhibit protein interactions and synergistically inhibit the MSCs apoptosis by enhancing the P21 expression. Furthermore, RXRα and MRTF‐A can activate P21 transcription by affecting the formation of the MRTF‐A/RXRα/RARE complex. These findings reveal the important roles of RXRα and MRTF‐A signaling in RA‐induced neural‐like differentiation of MSCs and describe a new mechanism underlying the synergistic interaction of RXRα and MRTF‐A.