PMID- 29928868 OWN - NLM STAT- MEDLINE DCOM- 20180807 LR - 20180807 IS - 1095-564X (Electronic) IS - 0012-1606 (Linking) VI - 441 IP - 1 DP - 2018 Sep 1 TI - The transcription factor Tfap2e/AP-2epsilon plays a pivotal role in maintaining the identity of basal vomeronasal sensory neurons. PG - 67-82 LID - S0012-1606(18)30117-9 [pii] LID - 10.1016/j.ydbio.2018.06.007 [doi] AB - The identity of individual neuronal cell types is defined and maintained by the expression of specific combinations of transcriptional regulators that control cell type-specific genetic programs. The epithelium of the vomeronasal organ of mice contains two major types of vomeronasal sensory neurons (VSNs): 1) the apical VSNs which express vomeronasal 1 receptors (V1r) and the G-protein subunit Galphai2 and; 2) the basal VSNs which express vomeronasal 2 receptors (V2r) and the G-protein subunit Galphao. Both cell types originate from a common pool of progenitors and eventually acquire apical or basal identity through largely unknown mechanisms. The transcription factor AP-2epsilon, encoded by the Tfap2e gene, plays a role in controlling the development of GABAergic interneurons in the main and accessory olfactory bulb (AOB), moreover AP-2epsilon has been previously described to be expressed in the basal VSNs. Here we show that AP-2epsilon is expressed in post-mitotic VSNs after they commit to the basal differentiation program. Loss of AP-2epsilon function resulted in reduced number of basal VSNs and in an increased number of neurons expressing markers of the apical lineage. Our work suggests that AP-2epsilon, which is expressed in late phases of differentiation, is not needed to initiate the apical-basal differentiation dichotomy but for maintaining the basal VSNs' identity. In AP-2epsilon mutants we observed a large number of cells that entered the basal program can express apical genes, our data suggest that differentiated VSNs of mice retain a notable level of plasticity. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Lin, Jennifer M AU - Lin JM AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Taroc, Ed Zandro M AU - Taroc EZM AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Frias, Jesus A AU - Frias JA AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Prasad, Aparna AU - Prasad A AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Catizone, Allison N AU - Catizone AN AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Sammons, Morgan A AU - Sammons MA AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. FAU - Forni, Paolo E AU - Forni PE AD - Department of Biological Sciences, University at Albany, Albany, NY 12222, USA. Electronic address: pforni@albany.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180619 PL - United States TA - Dev Biol JT - Developmental biology JID - 0372762 RN - 0 (Transcription Factor AP-2) SB - IM MH - Animals MH - Cell Differentiation/physiology MH - GABAergic Neurons/*metabolism MH - Gene Expression Regulation, Developmental/*physiology MH - Mice MH - Mice, Transgenic MH - Mutation MH - Nasal Mucosa/cytology/*embryology MH - Sensory Receptor Cells/cytology/*metabolism MH - Transcription Factor AP-2/*biosynthesis/genetics MH - Vomeronasal Organ/cytology/*embryology EDAT- 2018/06/22 06:00 MHDA- 2018/08/08 06:00 CRDT- 2018/06/22 06:00 PHST- 2018/02/13 00:00 [received] PHST- 2018/05/22 00:00 [revised] PHST- 2018/06/13 00:00 [accepted] PHST- 2018/06/22 06:00 [pubmed] PHST- 2018/08/08 06:00 [medline] PHST- 2018/06/22 06:00 [entrez] AID - S0012-1606(18)30117-9 [pii] AID - 10.1016/j.ydbio.2018.06.007 [doi] PST - ppublish SO - Dev Biol. 2018 Sep 1;441(1):67-82. doi: 10.1016/j.ydbio.2018.06.007. Epub 2018 Jun 19.