Environmental factors such as the availability of oxygen are instructive cues that regulate stem cell maintenance and differentiation. We used a genetically encoded biosensor to monitor the hypoxic state of neural cells in the larval brain of The biosensor reveals brain compartment and cell-type specific levels of hypoxia. The values correlate with differential tracheolation that is observed throughout development between the central brain and the optic lobe. Neural stem cells in both compartments show the strongest hypoxia response while intermediate progenitors, neurons and glial cells reveal weaker responses. We demonstrate that the distance between a cell and the next closest tracheole is a good predictor of the hypoxic state of that cell. Our study indicates that oxygen availability appears to be the major factor controlling the hypoxia response in the developing brain and that cell intrinsic and cell-type specific factors contribute to modulate the response in an unexpected manner.This article has an associated First Person interview with the first author of the paper.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7449796PMC
http://dx.doi.org/10.1242/bio.053629DOI Listing

Publication Analysis

Top Keywords

cell-type specific
12
compartment cell-type
8
developing brain
8
hypoxic state
8
hypoxia response
8
brain
5
hypoxia
4
specific hypoxia
4
hypoxia responses
4
responses developing
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!