Architecture of a microRNA-controlled gene regulatory network that diversifies neuronal cell fates.

Individual cell types are defined by the expression of specific gene batteries. Regulatory networks that control cell-type-specific gene expression programs in the nervous system are only beginning to be understood. This paper summarizes a complex gene regulatory network, composed of several transcription factors and microRNAs (miRNAs), that controls neuronal subclass specification in the nervous system of the nematode Caenorhabditis elegans.