Critical roles for Dicer in the female germline

Murchison, E. P., Stein, P., Xuan, Z. Y., Pan, H., Zhang, M. Q., Schultz, R. M., Hannon, G. J. (March 2007) Critical roles for Dicer in the female germline. Genes Dev, 21 (6). pp. 682-93. ISSN 0890-9369 (Print)

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Abstract

Dicer is an essential component of RNA interference (RNAi) pathways, which have broad functions in gene regulation and genome organization. Probing the consequences of tissue-restricted Dicer loss in mice indicates a critical role for Dicer during meiosis in the female germline. Mouse oocytes lacking Dicer arrest in meiosis I with multiple disorganized spindles and severe chromosome congression defects. Oogenesis and early development are times of significant post-transcriptional regulation, with controlled mRNA storage, translation, and degradation. Our results suggest that Dicer is essential for turnover of a substantial subset of maternal transcripts that are normally lost during oocyte maturation. Furthermore, we find evidence that transposon-derived sequence elements may contribute to the metabolism of maternal transcripts through a Dicer-dependent pathway. Our studies identify Dicer as central to a regulatory network that controls oocyte gene expression programs and that promotes genomic integrity in a cell type notoriously susceptible to aneuploidy.

Item Type:	Paper
Subjects:	bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > transcription bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > RNAi bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > dicer bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > enzymes > dicer organs, tissues, organelles, cell types and functions > cell types and functions > cell types > germ cell organs, tissues, organelles, cell types and functions > cell types and functions > cell types > germ cell organs, tissues, organelles, cell types and functions > cell types and functions > cell types > germ cell organism description > animal > mammal > rodent > mouse bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > translation
CSHL Authors:	Hannon, Gregory J. Murchison, Elizabeth P. Xuan, Zhenyu Y. Zhang, Michael Q.
Communities:	CSHL labs > Zhang lab CSHL labs > Hannon lab School of Biological Sciences > Publications
Depositing User:	CSHL Librarian
Date:	15 March 2007
Date Deposited:	10 Nov 2011 15:22
Last Modified:	22 Sep 2014 15:13
PMCID:	PMC1820942
Related URLs:	Publisher
URI:	https://repository.cshl.edu/id/eprint/23103

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