Sociosexual behavior requires both activating and repressive roles of Tfap2e/AP- 2ε in vomeronasal sensory neurons

Author:

Lin Jennifer M.ORCID,Mitchell Tyler A.ORCID,Rothstein MeganORCID,Pehl Alison,Taroc Ed Zandro M.ORCID,Katreddi Raghu RamORCID,Parra Katherine E.,Zuloaga Damian G.ORCID,Simoes-Costa Marcos,Forni Paolo E.ORCID

Abstract

SUMMARYNeuronal identity dictates the position in an epithelium, and the ability to detect, process, and transmit specific signals to specified targets. Transcription factors (TFs) determine cellular identity via direct modulation of genetic transcription and recruiting chromatin modifiers. However, our understanding of the mechanisms that define neuronal identity and their magnitude remains a critical barrier to elucidate the etiology of congenital and neurodegenerative disorders. The rodent vomeronasal organ provides a unique system to examine in detail the molecular mechanisms underlying the differentiation and maturation of chemosensory neurons. Here we demonstrated that the identity of postmitotic/maturing vomeronasal sensory neurons (VSNs), and vomeronasal dependent behaviors can be reprogrammed through the rescue of tfap2e/AP-2ε expression in the AP-2ε mice, and partially reprogrammed by inducing ectopic AP-2ε expression in mature apical VSNs. We suggest that the transcription factor AP-2ε can reprogram VSNs bypassing cellular plasticity restrictions, and that it directly controls the expression of batteries of vomeronasal genes.GRAPHICAL ABSTRACT

Publisher

Cold Spring Harbor Laboratory

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