Title |
Initiation of Meiotic Development Is Controlled by Three Posttranscriptional Pathways in Caenorhabditis elegans
|
---|---|
Published in |
Genetics, June 2018
|
DOI | 10.1534/genetics.118.300985 |
Pubmed ID | |
Authors |
Ariz Mohammad, Kara Vanden Broek, Christopher Wang, Anahita Daryabeigi, Verena Jantsch, Dave Hansen, Tim Schedl |
Abstract |
A major event in germline development is the transition from stem/progenitor cells to entry into meiosis and gametogenesis. This transition requires downregulation of mitotic cell cycle activity and upregulation of processes associated with meiosis. We identify the C. elegans SCFPROM-1 E3 ubiquitin ligase complex as functioning to downregulate mitotic cell cycle protein levels including CYE-1, WAPL-1 and KNL-2 at meiotic entry and, independently, promoting homologous chromosome pairing as a positive regulator of the CHK-2 kinase. SCFPROM-1 is thus a novel regulator of meiotic entry, coordinating downregulation of mitotic cell cycle proteins and promoting homolog pairing. We further show that SCFPROM-1 functions redundantly, in parallel to the previously described GLD-1 and GLD-2 meiotic entry pathways, downstream and inhibited by GLP-1 Notch signaling that specifies the stem cell fate. Accordingly, C. elegans employs three posttranscriptional pathways, SCFPROM-1 mediated protein degradation, GLD-1-mediated translational repression and GLD-2-mediated translational activation to control and coordinate the initiation of meiotic development. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 2 | 25% |
United States | 1 | 13% |
Puerto Rico | 1 | 13% |
Japan | 1 | 13% |
Unknown | 3 | 38% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 7 | 88% |
Scientists | 1 | 13% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 52 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 10 | 19% |
Student > Ph. D. Student | 8 | 15% |
Student > Master | 8 | 15% |
Other | 4 | 8% |
Student > Bachelor | 2 | 4% |
Other | 7 | 13% |
Unknown | 13 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 19 | 37% |
Agricultural and Biological Sciences | 13 | 25% |
Environmental Science | 1 | 2% |
Business, Management and Accounting | 1 | 2% |
Immunology and Microbiology | 1 | 2% |
Other | 2 | 4% |
Unknown | 15 | 29% |