期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 110, 期 15, 页码 5963-5968出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1219333110
关键词
-
资金
- Biotechnology and Biological Sciences Research Council, United Kingdom
- Department of Biotechnology, India
- National Centre for Biological Sciences
During development, Drosophila larvae undergo a dramatic increase in body mass wherein nutritional and developmental cues are transduced into growth through the activity of complex signaling pathways. Class I phosphoinositide 3-kinases have an established role in this process. In this study we identify Drosophila phosphatidylinositol 5-phosphate 4-kinase (dPIP4K) as a phosphoinositide kinase that regulates growth during larval development. Loss-of-function mutants in dPIP4K show reduced body weight and prolonged larval development, whereas overexpression of dPIP4K results both in an increase in body weight and shortening of larval development. The growth defect associated with dPIP4K loss of function is accompanied by a reduction in the average cell size of larval endoreplicative tissues. Our findings reveal that these phenotypes are underpinned by changes in the signaling input into the target of rapamycin (TOR) signaling complex and changes in the activity of its direct downstream target p70 56 kinase. Together, these results define dPIP4K activity as a regulator of cell growth and TOR signaling during larval development.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据