Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis.
Drosophila oogenesis is especially well suited for studying stem cell biology, cellular differentiation, and morphogenesis. The small modifier protein ubiquitin regulates many cellular pathways. Ubiquitin is conjugated to target proteins by a diverse class of enzymes called ubiquitin E3 ligases. Her...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2010-02-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC2816211?pdf=render |
| _version_ | 1819175772836855808 |
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| author | Jan-Michael Kugler Christopher Lem Paul Lasko |
| author_facet | Jan-Michael Kugler Christopher Lem Paul Lasko |
| author_sort | Jan-Michael Kugler |
| collection | DOAJ |
| description | Drosophila oogenesis is especially well suited for studying stem cell biology, cellular differentiation, and morphogenesis. The small modifier protein ubiquitin regulates many cellular pathways. Ubiquitin is conjugated to target proteins by a diverse class of enzymes called ubiquitin E3 ligases. Here we characterize the requirement of Cul-5, a key component of a subgroup of Cullin-RING-type ubiquitin E3 ligases, in Drosophila oogenesis. We find that reduced cul-5 activity causes the formation of aberrant follicles that are characterized by excess germ cells. We show that germ line cells overproliferate in cul-5 mutant females, causing the formation of abnormally large germ line cysts. Also, the follicular epithelium that normally encapsulates single germ line cysts develops aberrantly in cul-5 mutant, leading to defects in cyst formation. We additionally found that Cul-5 is required for germ cell maintenance, as germ cells are depleted in a substantial fraction of cul-5 mutant ovaries. All of these cul-5 phenotypes are strongly enhanced by reduced activity of gustavus (gus), which encodes a substrate receptor of Cul-5-based ubiquitin E3 ligases. Taken together, our results implicate Cul-5/Gus ubiquitin E3 ligases in ovarian tissue morphogenesis, germ cell proliferation and maintenance of the ovarian germ cell population. |
| first_indexed | 2024-12-22T21:00:11Z |
| format | Article |
| id | doaj.art-e38114b3b632433f82176fe662f6df0c |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-22T21:00:11Z |
| publishDate | 2010-02-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-e38114b3b632433f82176fe662f6df0c2022-12-21T18:12:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-02-0152e904810.1371/journal.pone.0009048Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis.Jan-Michael KuglerChristopher LemPaul LaskoDrosophila oogenesis is especially well suited for studying stem cell biology, cellular differentiation, and morphogenesis. The small modifier protein ubiquitin regulates many cellular pathways. Ubiquitin is conjugated to target proteins by a diverse class of enzymes called ubiquitin E3 ligases. Here we characterize the requirement of Cul-5, a key component of a subgroup of Cullin-RING-type ubiquitin E3 ligases, in Drosophila oogenesis. We find that reduced cul-5 activity causes the formation of aberrant follicles that are characterized by excess germ cells. We show that germ line cells overproliferate in cul-5 mutant females, causing the formation of abnormally large germ line cysts. Also, the follicular epithelium that normally encapsulates single germ line cysts develops aberrantly in cul-5 mutant, leading to defects in cyst formation. We additionally found that Cul-5 is required for germ cell maintenance, as germ cells are depleted in a substantial fraction of cul-5 mutant ovaries. All of these cul-5 phenotypes are strongly enhanced by reduced activity of gustavus (gus), which encodes a substrate receptor of Cul-5-based ubiquitin E3 ligases. Taken together, our results implicate Cul-5/Gus ubiquitin E3 ligases in ovarian tissue morphogenesis, germ cell proliferation and maintenance of the ovarian germ cell population.http://europepmc.org/articles/PMC2816211?pdf=render |
| spellingShingle | Jan-Michael Kugler Christopher Lem Paul Lasko Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. PLoS ONE |
| title | Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. |
| title_full | Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. |
| title_fullStr | Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. |
| title_full_unstemmed | Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. |
| title_short | Reduced cul-5 activity causes aberrant follicular morphogenesis and germ cell loss in Drosophila oogenesis. |
| title_sort | reduced cul 5 activity causes aberrant follicular morphogenesis and germ cell loss in drosophila oogenesis |
| url | http://europepmc.org/articles/PMC2816211?pdf=render |
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