Neurotransmitter identity is acquired in a lineage-restricted manner in the Drosophila CNS

eLife

James W Truman¹  Hui-Min Chen²  Xi Long³  Robert H Singer³  Haluk Lacin³  Tzumin Lee³ 

[1]Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, United States

[2]Department of Genetics, Washington University, Saint Louis, United States

[3]Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States

关键词: neurotransmitters;    ventral nerve cord;    stem cell;    neuroblast;    lineages;    central nervous system;   

DOI  :  10.7554/eLife.43701

来源: DOAJ

【 摘 要 】

The vast majority of the adult fly ventral nerve cord is composed of 34 hemilineages, which are clusters of lineally related neurons. Neurons in these hemilineages use one of the three fast-acting neurotransmitters (acetylcholine, GABA, or glutamate) for communication. We generated a comprehensive neurotransmitter usage map for the entire ventral nerve cord. We did not find any cases of neurons using more than one neurotransmitter, but found that the acetylcholine specific gene ChAT is transcribed in many glutamatergic and GABAergic neurons, but these transcripts typically do not leave the nucleus and are not translated. Importantly, our work uncovered a simple rule: All neurons within a hemilineage use the same neurotransmitter. Thus, neurotransmitter identity is acquired at the stem cell level. Our detailed transmitter- usage/lineage identity map will be a great resource for studying the developmental basis of behavior and deciphering how neuronal circuits function to regulate behavior.

【 授权许可】

Unknown