Stable intronic sequence RNAs (sisRNAs) are conserved in various organisms. Recent observations in Drosophila suggest that sisRNAs often engage in regulatory feedback loops to control the expression of their parental genes. The use of sisRNAs as mediators for local feedback control may be a general phenomenon.

中文翻译：

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稳定的内含子序列RNA参与反馈环

稳定的内含子序列RNA（sisRNA）在各种生物中均得到保守。在果蝇中的最新观察表明，sisRNA通常参与调节性反馈环以控制其亲本基因的表达。sisRNA作为局部反馈控制介质的使用可能是普遍现象。