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miR‐124 promotes neural differentiation in mouse bulge stem cells by repressing Ptbp1 and Sox9
Author(s) -
Mokabber Haleh,
Najafzadeh Nowruz,
Mohammadzadeh Vardin Mohammad
Publication year - 2019
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.27563
Subject(s) - cellular differentiation , microrna , microbiology and biotechnology , biology , sox9 , neurite , downregulation and upregulation , neun , cancer research , transcription factor , immunohistochemistry , gene , immunology , genetics , in vitro
Hair follicle stem cells (HFSCs) are able to differentiate into neurons and glial cells. Distinct microRNAs (miRNAs) regulate the proliferation and differentiation of HFSCs. However, the exact role of miR‐124 in the neural differentiation of HFSCs has not been elucidated. HFSCs were isolated from mouse whisker follicles. miR‐9 , let‐7b , and miR‐124, Ptbp1 , and Sox9 expression levels were detected by real‐time polymerase chain reaction (RT‐PCR). The influence of miR‐124 transfection was evaluated using immunostaining. We demonstrated that miR‐124 and let‐7b expression levels were significantly increased after the neural differentiation. Sox9 and Ptbp1 were identified as the target of miR‐124 in the HFSCs. During neural differentiation and miR‐124 mimicking , Ptbp1 and Sox9 levels were decreased. Moreover, the miR‐124 overexpression increased MAP2 (58.43 ± 11.26) and NeuN (48.34 ± 11.15) proteins expression. The results demonstrated that miR‐124 may promote the differentiation of HFSCs into neuronal cells by targeting Sox9 and Ptbp1 .