Transcription of the C. elegans let-7 microRNA is temporally regulated by one of its targets, hbl-1.
Roush, Sarah F, and Frank J Slack. 2009. “Transcription of the C. Elegans Let-7 MicroRNA Is Temporally Regulated by One of Its Targets, Hbl-1.”. Developmental Biology 334 (2): 523-34.