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Updated: Feb 5, 2026

An Efficient Strategy for Generating Tissue-specific Binary Transcription Systems in Drosophila by Genome Editing
Published on: September 19, 2018
Generation of Drosophila sisRNAs by Independent Transcription from Cognate Introns
Sharon Si Jia Ng1, Ruther Teo Zheng2, Ismail Osman3
1Temasek Polytechnic, 21 Tampines Avenue 1, Singapore 529757, Singapore.
Abstract:
Although stable intronic sequence RNAs (sisRNAs) are conserved in plants and animals, their functional significance is still unclear. We identify a pool of polyadenylated maternally deposited sisRNAs in Drosophila melanogaster. These sisRNAs can be generated by independent transcription from the cognate introns. The ovary-specific poly(A) polymerase Wispy mediates the polyadenylation of maternal sisRNAs and confers their stability as maternal transcripts. A developmentally regulated sisRNA sisR-3 represses the expression of a long noncoding RNA CR44148 and is required during development. Our results expand the pool of sisRNAs and suggest that sisRNAs perform regulatory functions during development in Drosophila.
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