We describe a new method that allows cloning of double-stranded RNAs (dsRNAs) that are generated in RNase protection experiments. We demonstrate that the mouse C/D box snoRNA MBII-85 (SNORD116) is processed into at least five shorter RNAs using processing sites near known functional elements of C/D box snoRNAs. Surprisingly, the majority of cloned RNAs from RNase protection experiments were derived from endogenous cellular RNA, indicating widespread antisense expression. The cloned dsRNAs could be mapped to genome areas that show RNA expression on both DNA strands and partially overlapped with experimentally determined argonaute-binding sites. The data suggest a conserved processing pattern for some C/D box snoRNAs and abundant expression of longer, non-coding RNAs in the cell that can potentially form dsRNAs.
|Number of pages||11|
|Journal||Nucleic Acids Research|
|State||Published - Dec 2011|
Bibliographical noteFunding Information:
National Institutes of Health (RO1 GM083187 to S.S.; NIH GM074688 to M.Z.); the Prader-Willi Research Foundation USA and Shire Human Genetic Therapies; European Comission project EURASNET-LSHG-CT-2005-518238 (to S.S. and E.E.); Spanish Ministry of Science grant BIO2008-01091 (to E.E.). Funding for open access charge: National Institutes of Health (RO1 GM083187).
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