PMID- 35875660 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220726 IS - 1662-5099 (Print) IS - 1662-5099 (Electronic) IS - 1662-5099 (Linking) VI - 15 DP - 2022 TI - Meis1 Regulates Nociceptor Development and Behavioral Response to Tactile Stimuli. PG - 901466 LID - 10.3389/fnmol.2022.901466 [doi] LID - 901466 AB - Nociceptors in the dorsal root ganglia (DRG) and trigeminal ganglia (TG) are necessary for transmitting pain and itch signals. However, the molecular mechanism regulating nociceptor development remains largely unknown. This study identifies that the transcription factor Meis1 is generally expressed in two groups of sensory neurons in the developing DRG. During prenatal and neonatal stages, approximately 2/3 of Meis1+ neurons are Runx1+ nociceptors, while 1/3 of Meis1+ neurons are NF200+ myelinated neurons. At postnatal stages, Meis1 expression in nociceptors is gradually reduced. Here, we constructed a Meis1 conditional knockout mouse line to selectively delete Meis1 in Nav1.8 lineage nociceptors. Microarray analyses showed that differentially expressed genes in the Meis1 mutant DRG were enriched in pathways related to sensory perception of pain and nervous system development. In addition, Meis1 regulates the expression of some marker genes of Nppb+ neurons and C-LTMRs. Furthermore, Meis1 mutant mice exhibit behavioral deficits in response to light mechanical pain, static touch and chemical itch. Therefore, this study reveals that Meis1 is required to regulate the development of nociceptors. CI - Copyright (c) 2022 Cao, Huang, Lu, Jiang, Hu, Cao and Liu. FAU - Cao, Zheng AU - Cao Z AD - Beijing Institute of Biotechnology, Beijing, China. AD - School of Biological Engineering and Food Science, Hubei University of Technology, Wuhan, China. FAU - Huang, Chengcheng AU - Huang C AD - Beijing Institute of Biotechnology, Beijing, China. AD - General Hospital of Central Theater Command, Wuhan, China. FAU - Lu, Fumin AU - Lu F AD - Beijing Institute of Biotechnology, Beijing, China. FAU - Jiang, Xuequan AU - Jiang X AD - Beijing Institute of Biotechnology, Beijing, China. AD - School of Biological Engineering and Food Science, Hubei University of Technology, Wuhan, China. FAU - Hu, Yong AU - Hu Y AD - Beijing Institute of Biotechnology, Beijing, China. FAU - Cao, Cheng AU - Cao C AD - Beijing Institute of Biotechnology, Beijing, China. FAU - Liu, Zijing AU - Liu Z AD - Beijing Institute of Biotechnology, Beijing, China. LA - eng PT - Journal Article DEP - 20220706 PL - Switzerland TA - Front Mol Neurosci JT - Frontiers in molecular neuroscience JID - 101477914 PMC - PMC9301487 OTO - NOTNLM OT - C-LTMR OT - Meis1 OT - itch OT - microarray OT - nociceptor OT - pain OT - touch COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/07/26 06:00 MHDA- 2022/07/26 06:01 PMCR- 2022/01/01 CRDT- 2022/07/25 04:13 PHST- 2022/03/22 00:00 [received] PHST- 2022/06/13 00:00 [accepted] PHST- 2022/07/25 04:13 [entrez] PHST- 2022/07/26 06:00 [pubmed] PHST- 2022/07/26 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fnmol.2022.901466 [doi] PST - epublish SO - Front Mol Neurosci. 2022 Jul 6;15:901466. doi: 10.3389/fnmol.2022.901466. eCollection 2022.