Unknown

Dataset Information

0

A starvation-induced noncoding RNA modulates expression of Dicer-regulated genes.


ABSTRACT: Although much has been learned about short noncoding RNAs, long noncoding transcripts are largely uncharacterized. Here, we describe Caenorhabditis elegans rncs-1, a highly base-paired, 800-nucleotide noncoding RNA expressed in hypodermis and intestine. Transcription of rncs-1 is modulated in response to food supply. Although highly double-stranded, we show that rncs-1 RNA is not a substrate for Dicer because of branched structures at its termini. However, rncs-1 RNA inhibits Dicer cleavage of a second dsRNA in vitro, presumably by competition. We validate this observation in vivo by demonstrating that mRNA levels of several Dicer-regulated genes vary with changes in rncs-1 expression. Certain viruses express dsRNA to compete with cellular dsRNA-mediated pathways, and our data suggest that rncs-1 provides a cellular correlate of this phenomenon.

SUBMITTER: Hellwig S 

PROVIDER: S-EPMC2519042 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

altmetric image

Publications

A starvation-induced noncoding RNA modulates expression of Dicer-regulated genes.

Hellwig Sabine S   Bass Brenda L BL  

Proceedings of the National Academy of Sciences of the United States of America 20080822 35


Although much has been learned about short noncoding RNAs, long noncoding transcripts are largely uncharacterized. Here, we describe Caenorhabditis elegans rncs-1, a highly base-paired, 800-nucleotide noncoding RNA expressed in hypodermis and intestine. Transcription of rncs-1 is modulated in response to food supply. Although highly double-stranded, we show that rncs-1 RNA is not a substrate for Dicer because of branched structures at its termini. However, rncs-1 RNA inhibits Dicer cleavage of a  ...[more]

Similar Datasets

| S-EPMC6821963 | biostudies-literature
| S-EPMC5410798 | biostudies-literature
| S-EPMC3117784 | biostudies-literature
| S-EPMC3526313 | biostudies-literature
| S-EPMC6213316 | biostudies-literature
| S-EPMC6949708 | biostudies-literature
| S-EPMC8782178 | biostudies-literature
| S-EPMC4786734 | biostudies-literature
| S-EPMC6386752 | biostudies-literature
| S-EPMC6594961 | biostudies-literature