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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hanazawa, M. Ueno, N. Iino, Y. Mochii, M. Kohara, Y. |
| Description | Author Affiliation: Hanazawa M ( Molecular Genetics Research Laboratory, University of Tokyo, Tokyo 113-0033, Japan.); |
| Abstract | Caenorhabditis elegans is an ideal organism for the study of the molecular basis of fundamental biological processes such as germ-line development, especially because of availability of the whole genome sequence and applicability of the RNA interference (RNAi) technique. To identify genes involved in germ-line development, we produced subtracted cDNA pools either enriched for or deprived of the cDNAs from germ-line tissues. We then performed differential hybridization on the high-density cDNA grid, on which about 7,600 nonoverlapping expressed sequence tag (EST) clones were spotted, to identify a set of genes specifically expressed in the germ line. One hundred and sixty-eight clones were then tested with the RNAi technique. Of these, 15 clones showed sterility with a variety of defects in germ-line development. Seven of them led to the production of unfertilized eggs, because of defects in spermatogenesis (4 clones), or defects in the oocytes (3 clones). The other 8 clones led to failure of oogenesis. These failures were caused by germ-line proliferation defect (Glp phenotype), meiotic arrest, and defects in sperm--oocyte switch (Mog phenotype) among others. These results demonstrate the efficacy of the screening strategy using the EST library combined with the RNAi technique in C. elegans. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 98 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2001-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Caenorhabditis Elegans Genetics Gene Expression Genes, Helminth Oogenesis RNA, Antisense Spermatogenesis Animals DNA, Complementary DNA, Helminth Fertilization Infertility Nucleic Acid Hybridization Physiology Ovum Phenotype RNA RNA, Helminth RNA, Small Interfering Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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