EGFR/Ras/MAPK signaling mediates adult midgut epithelial homeostasis and regeneration in Drosophila.
EGFR/Ras/MAPK signaling mediates adult midgut epithelial homeostasis and regeneration in Drosophila.
复制标题
DOI:
10.1016/j.stem.2010.11.026
复制
发表时间:
2011-01-07
期刊:
影响因子:
23.9
通讯作者:
Edgar BA
中科院分区:
文献类型:
--
作者:
Jiang H;Grenley MO;Bravo MJ;Blumhagen RZ;Edgar BA
Many tissues in higher animals undergo dynamic homeostatic growth, wherein damaged or aged cells are replaced by the progeny of resident stem cells. To maintain homeostasis, stem cells must respond to tissue needs. Here we show that in response to damage or stress in the intestinal (midgut) epithelium of adult Drosophila, multiple EGFR ligands and rhomboids (intramembrane proteases that activate some EGFR ligands) are induced, leading to the activation of EGFR signaling in intestinal stem cells (ISCs). Activation of EGFR signaling promotes ISC division and midgut epithelium regeneration, thus maintaining tissue homeostasis. ISCs defective in EGFR signaling cannot grow or divide, are poorly maintained, and cannot support midgut epithelium regeneration following enteric infection by the bacterium, Pseudomonas entomophila. Furthermore, ISC proliferation induced by Jak/Stat signaling is dependent upon EGFR signaling. Thus the EGFR/Ras/MAPK signaling pathway plays central, essential roles in ISC maintenance and the feedback system that mediates intestinal homeostasis.
登录
查看更多内容
影响因子:
11.4
作者:
Astigarraga, Sergio;Grossman, Rona;Jimenez, Gerardo
通讯作者:
Jimenez, Gerardo
影响因子:
8
作者:
Hime, GR;Dhungat, MP;Bowtell, DDL
通讯作者:
Bowtell, DDL
影响因子:
2.7
作者:
Beebe, Katherine;Lee, Wen-Chih;Micchelli, Craig A.
通讯作者:
Micchelli, Craig A.
影响因子:
30.8
作者:
Haigis, Kevin M.;Kendall, Krystle R.;Jacks, Tyler
通讯作者:
Jacks, Tyler
影响因子:
5.3
作者:
Lee, D;Pearsall, RS;Threadgill, DW
通讯作者:
Threadgill, DW