||Temporal regulation of the generation of neuronal diversity in Drosophila
Yasugi, Tetsuo ,
Development Growth and Differentiation
87 , 2016-01-01 , 日本発生生物学会 = Japanese Society of Developmental Biologists / Blackwell Publishing
For the construction of complex neural networks, the generation of neurons and glia must be tightly regulated both spatially and temporally. One of the major issues in neural development is the generation of a large variety of neurons and glia over time from a relatively small number of neural stem cells. In Drosophila, neural stem cells, called neuroblasts (NBs), have been used as a useful model system to uncover the molecular and cellular machinery involved in the establishment of neural diversity. NBs divide asymmetrically and produce another self-renewing progenitor cell and a differentiating cell. NBs are subdivided into several types based on their location in the central nervous system. Each type of NB has specific features related to the timing of cell generation, cell cycle progression, temporal patterning for neuronal specification, and termination mechanism. In this review, we focus on the molecular mechanisms that regulate the proliferation of NBs and generate a large variety of neuronal and glia subtypes during development. Drosophila neural stem cells, called neuroblasts, produce a large variety of neurons and glia during development. Neuroblasts divide asymmetrically to give rise to another self-renewing progenitor and a differentiating cell. © 2015 Japanese Society of Developmental Biologists.