JOURNAL ARTICLE

Nspc1 regulates the key pluripotent Oct4-Nanog-Sox2 axis in P19 embryonal carcinoma cells via directly activating Oct4

Hui Li, Rong Fan, Mingze Sun, Tao Jiang, Yanhua Gong
Biochemical and Biophysical Research Communications 2013 November 1, 440 (4): 527-32
24113379
Nspc1 is an identified transcription repressor. However, transiently up-regulated or down-regulated Nspc1 in P19 embryonal carcinoma cells affects expression levels of Oct4, Sox2 and Nanog in a positive correlation. Luciferase activity assays verified that Nspc1 regulates the Oct4 promoter in a dose dependent manner. ChIP assay shows that Nspc1 activates Oct4 by directly binding to the (-1021 to -784) region of Oct4 promoter. Dominant negative analysis indicated the activation is dependent on the retinoid acid response element (RARE). We demonstrated Nspc1 has a positive role in maintaining the pluripotency of P19 cells by directly regulating Oct4.

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