An Abundant Class of Tiny RNAs with Probable Regulatory Roles in <i>Caenorhabditis elegans</i>
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- Nelson C. Lau
- Whitehead Institute for Biomedical Research, and Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, MA 02142, USA.
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- Lee P. Lim
- Whitehead Institute for Biomedical Research, and Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, MA 02142, USA.
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- Earl G. Weinstein
- Whitehead Institute for Biomedical Research, and Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, MA 02142, USA.
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- David P. Bartel
- Whitehead Institute for Biomedical Research, and Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, MA 02142, USA.
抄録
<jats:p> Two small temporal RNAs (stRNAs), <jats:italic>lin-4</jats:italic> and <jats:italic>let-7</jats:italic> , control developmental timing in <jats:italic>Caenorhabditis elegans</jats:italic> . We find that these two regulatory RNAs are members of a large class of 21- to 24-nucleotide noncoding RNAs, called microRNAs (miRNAs). We report on 55 previously unknown miRNAs in <jats:italic>C. elegans</jats:italic> . The miRNAs have diverse expression patterns during development: a <jats:italic>let-7</jats:italic> paralog is temporally coexpressed with <jats:italic>let-7</jats:italic> ; miRNAs encoded in a single genomic cluster are coexpressed during embryogenesis; and still other miRNAs are expressed constitutively throughout development. Potential orthologs of several of these miRNA genes were identified in <jats:italic>Drosophila</jats:italic> and human genomes. The abundance of these tiny RNAs, their expression patterns, and their evolutionary conservation imply that, as a class, miRNAs have broad regulatory functions in animals. </jats:p>
収録刊行物
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- Science
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Science 294 (5543), 858-862, 2001-10-26
American Association for the Advancement of Science (AAAS)
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詳細情報 詳細情報について
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- CRID
- 1361699994194455168
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- NII論文ID
- 80015134812
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- ISSN
- 10959203
- 00368075
- http://id.crossref.org/issn/00368075
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