Abstract:Intertissue RNA transport has emerged as a novel signaling mechanism. In C. elegans, this is conferred by the systemic RNAi pathway, in which the limiting step is the cellular import of extracellular RNAs via SID-1. To better understand the physiological role of systemic RNAi in vivo, we modified the function of SID-1 through loss-of-function mutation and tissue-specific overexpression of sid-1 in C. elegans. We observed that sid-1 loss-of-function mutants are as healthy as wild-type worms. Conversely, overexp… Show more
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