Fibroblast growth factor 2 increases Otx2 expression in precursor cells from mammalian telencephalon
Fibroblast growth factor 2 increases Otx2 expression in precursor cells from mammalian telencephalon
复制标题
成纤维细胞生长因子 2 增加哺乳动物端脑前体细胞中 Otx2 的表达
作者:
L. Robel;M. Ding;AJ James;X. Lin;A. Simeone;J. Leckman;F. Vaccarino
Dissociated primary cultures from rat telencephalon at different developmental stages were used to study the effect of basic fibroblast growth factor (FGF2) on Otx2, Dlx1, and Emx1, three homeobox genes expressed in different regions of the developing mammalian forebrain. At embryonic day (E)13.5. the regional pattern of expression of Otx1, Otx2, Dlx1, Dlx2, Dlx5, and Emx1 is maintained in primary culture, suggesting that cells are already committed to a regional identity at this stage. In these cultures, Otx2 is expressed by precursor cells, whereas Dlx1 and Emx1 are predominantly expressed by postmitotic cells. We found that FGF2 increased Otx2 expression within precursor cells and the total number of Otx2-expressing cells. This effect was gene- specific, dose-dependent, and temporally regulated, with larger effects at earlier stages of development (E11.5). At E13.5, the effect of FGF2 on Otx2 expression was restricted to the basal telencephalon. Our results suggest that a restricted population of neuroblasts respond to FGF2 in a temporally regulated fashion by proliferating and increasing Otx2 expression. This interaction between FGF2 and Otx2 may be important for the regulation of neurogenesis in the forebrain.
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影响因子:
4.6
作者:
A. Wanaka;J. Milbrandt;Eugene M. Johnson
通讯作者:
A. Wanaka;J. Milbrandt;Eugene M. Johnson
DOI:
10.1016/0169-328x(91)90023-q
发表时间:
1991
期刊:
Brain research. Molecular brain research
影响因子:
--
作者:
Powell,PP;Finklestein,SP;Dionne,CA;Jaye,M;Klagsbrun,M
通讯作者:
Klagsbrun,M
影响因子:
10.5
作者:
CHO, KWY;DEROBERTIS, EM
通讯作者:
DEROBERTIS, EM
DOI:
10.1073/pnas.91.6.2250
发表时间:
1994-03-15
影响因子:
11.1
作者:
SIMEONE, A;ACAMPORA, D;BONCINELLI, E
通讯作者:
BONCINELLI, E
DOI:
10.1073/pnas.91.1.375
发表时间:
1994
影响因子:
11.1
作者:
Takahashi,T;Nowakowski,RS;CavinessJr,VS
通讯作者:
CavinessJr,VS