Tal2 expression is induced by all-trans retinoic acid in P19 cells prior to acquisition of neural fate.

Takanobu Kobayashi, Rie Komori, Kiyoshi Ishida, Katsuhito Kino, Sei-ichi Tanuma, Hiroshi Miyazawa

Scientific reports 2014 May 12

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TAL2 is a member of the basic helix-loop-helix family and is essential for the normal development of the mouse brain. However, the function of TAL2 during brain development is unclear. P19 cells are pluripotent mouse embryonal carcinoma cells that adopt neural fates upon exposure to all-trans retinoic acid (atRA) and culture in suspension. We found that the expression of Tal2 gene was induced in P19 cells after addition of atRA in suspension culture. Tal2 expression was detected within 3 h after the induction, and had nearly returned to basal levels by 24 h. When GFP-tagged TAL2 (GFP-TAL2) was expressed in P19 cells, we observed GFP-TAL2 in the nucleus. Moreover, we showed that atRA and retinoic acid receptor α regulated Tal2 expression. These results demonstrate for the first time that atRA induces Tal2 expression in P19 cells, and suggest that TAL2 commits to the acquisition of neural fate in brain development.

Citation

Takanobu Kobayashi, Rie Komori, Kiyoshi Ishida, Katsuhito Kino, Sei-ichi Tanuma, Hiroshi Miyazawa. Tal2 expression is induced by all-trans retinoic acid in P19 cells prior to acquisition of neural fate. Scientific reports. 2014 May 12;4:4935