Ordered patterning of the sensory system is susceptible to stochastic features of gene expression.

First Authors Ritika Giri
Authors Ritika Giri, Dimitrios Papadopoulos, Diana M Posadas, Hemanth K Potluri, Pavel Tomancak, Madhav Mani, Richard W Carthew
Corresponding Authors Madhav Mani, Richard W Carthew
Last Authors Richard W Carthew
Journal Name eLife (Elife)
Volume 9
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Article Number e53638
Open Access true
Print Publication Date 2020-02-26
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Abstract Sensory neuron numbers and positions are precisely organized to accurately map environmental signals in the brain. This precision emerges from biochemical processes within and between cells that are inherently stochastic. We investigated impact of stochastic gene expression on pattern formation, focusing on senseless (sens), a key determinant of sensory fate in Drosophila. Perturbing microRNA regulation or genomic location of sens produced distinct noise signatures. Noise was greatly enhanced when both sens alleles were present in homologous loci such that each allele was regulated in trans by the other allele. This led to disordered patterning. In contrast, loss of microRNA repression of sens increased protein abundance but not sensory pattern disorder. This suggests that gene expression stochasticity is a critical feature that must be constrained during development to allow rapid yet accurate cell fate resolution.
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DOI 10.7554/eLife.53638
PubMed ID 32101167
WebOfScience Link WOS:000519735500001
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Created By thuem
Added Date 2020-03-09
Last Edited By herbst
Last Edited Date 2021-06-21 17:36:15.241
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