The nucleosomal binding protein NSBP1 is highly expressed in the placenta and modulates the expression of differentiation markers in placental Rcho-1 cells.
We report that NSBP1, a nucleosome binding protein that affects the structure of chromatin, is highly expressed in mouse placenta. In Rcho-1 cells, which recapitulate the differentiation of trophoblast giant cells of living placenta, NSBP1 expression is linked to differentiation. Disregulation of NSBP1 protein levels, by either siRNA treatment or by overexpression, alters the expression of several members of the prolactin gene family without affecting the levels of several transcription factors involved in placental differentiation. Our studies identify NSBP1 as a nucleosome binding protein that modulates the expression of prolactin gene family members most likely by inducing changes in chromatin structure.
Shirakawa
Hitoshi
H
Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.
Rochman
Mark
M
Furusawa
Takashi
T
Kuehn
Michael R
MR
Horigome
Satoru
S
Haketa
Keiichi
K
Sugita
Yumi
Y
Inada
Tomoyuki
T
Komai
Michio
M
Bustin
Michael
M
D000818:Animals; D002454:Cell Differentiation; D002460:Cell Line; D002843:Chromatin / Q000737:chemistry; D005260:Female; D005786:Gene Expression Regulation; D024001:HMGN Proteins / Q000032:analysis* / Q000502:physiology*; D051379:Mice; D010920:Placenta / Q000737:chemistry*; D011388:Prolactin / Q000235:genetics*; D051381:Rats; D015534:Trans-Activators / Q000032:analysis* / Q000502:physiology*; D014157:Transcription Factors / Q000032:analysis
D002843:Chromatin; D024001:HMGN Proteins; C429289:HMGN5 protein, human; D015534:Trans-Activators; D014157:Transcription Factors; D011388:Prolactin