Cis-regulatory mechanisms for robust olfactory sensory neuron class-restricted odorant receptor gene expression in Drosophila

PLoS Genetics
Shadi Jafari, Mattias Alenius

Abstract

Odor perception requires that each olfactory sensory neuron (OSN) class continuously express a single odorant receptor (OR) regardless of changes in the environment. However, little is known about the control of the robust, class-specific OR expression involved. Here, we investigate the cis-regulatory mechanisms and components that generate robust and OSN class-specific OR expression in Drosophila. Our results demonstrate that the spatial restriction of expression to a single OSN class is directed by clusters of transcription-factor DNA binding motifs. Our dissection of motif clusters of differing complexity demonstrates that structural components such as motif overlap and motif order integrate transcription factor combinations and chromatin status to form a spatially restricted pattern. We further demonstrate that changes in metabolism or temperature perturb the function of complex clusters. We show that the cooperative regulation between motifs around and within the cluster generates robust, class-specific OR expression.

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Jul 21, 2016·Current Opinion in Insect Science·Claire RuschJeffrey A Riffell
Sep 13, 2018·Annual Review of Genetics·Comzit OpachaloemphanDanny Reinberg
Jan 18, 2019·PLoS Computational Biology·Alejandra GonzálezClaudio Altafini
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Feb 9, 2020·The Journal of Experimental Biology·Hua YanClaude Desplan
Jan 26, 2021·Cell and Tissue Research·Shadi Jafari, Mattias Alenius

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Methods Mentioned

BETA
Transgenic
PCR
electrophoresis

Software Mentioned

Adobe Photoshop
Onecut
Primer Express
LSM Image Browser

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