Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-1041
Gumienny, T L; Lambie, E; Hartwieg, E; Horvitz, H R; Hengartner, M O (1999). Genetic control of programmed cell death in the Caenorhabditis elegans hermaphrodite germline. Development, 126(5):1011-1022.
Development of the nematode Caenorhabditis elegans is highly reproducible and the fate of every somatic cell has been reported. We describe here a previously uncharacterized cell fate in C. elegans: we show that germ cells, which in hermaphrodites can differentiate into sperm and oocytes, also undergo apoptotic cell death. In adult hermaphrodites, over 300 germ cells die, using the same apoptotic execution machinery (ced-3, ced-4 and ced-9) as the previously described 131 somatic cell deaths. However, this machinery is activated by a distinct pathway, as loss of egl-1 function, which inhibits somatic cell death, does not affect germ cell apoptosis. Germ cell death requires ras/MAPK pathway activation and is used to maintain germline homeostasis. We suggest that apoptosis eliminates excess germ cells that acted as nurse cells to provide cytoplasmic components to maturing oocytes.
84 downloads since deposited on 11 Feb 2008
19 downloads since 12 months
|Item Type:||Journal Article, refereed|
|Communities & Collections:||07 Faculty of Science > Institute of Molecular Life Sciences|
|Dewey Decimal Classification:||570 Life sciences; biology|
|Date:||1 February 1999|
|Deposited On:||11 Feb 2008 12:20|
|Last Modified:||16 Jul 2014 16:19|
|Publisher:||Company of Biologists|
Users (please log in): suggest update or correction for this item
Repository Staff Only: item control page