PMID- 36990129 OWN - NLM STAT- MEDLINE DCOM- 20230508 LR - 20230825 IS - 1879-260X (Electronic) IS - 0925-4439 (Linking) VI - 1869 IP - 5 DP - 2023 Jun TI - Involvement of Kir4.1 in pain insensitivity of the BTBR mouse model of autism spectrum disorder. PG - 166700 LID - S0925-4439(23)00066-2 [pii] LID - 10.1016/j.bbadis.2023.166700 [doi] AB - Autism spectrum disorder (ASD) is a severe neurodevelopmental disorder. Abnormal pain sensation is a common clinical symptom of ASD that seriously affects the quality of life of patients with ASD and their families. However, the underlying mechanism is unclear. It is believed to be related to the excitability of neurons and the expression of ion channels. Herein, we confirmed that baseline pain and Complete Freund's adjuvant (CFA)-induced chronic inflammatory pain were impaired in the BTBR T+ Itpr3tf/J (BTBR) mouse model of ASD. RNA sequencing (RNA-seq) analyses of the dorsal root ganglia (DRG), which are closely related to pain in ASD model mice, revealed that high expression of KCNJ10 (encoding Kir4.1) might be an important factor in ASD pain sensation abnormalities. The levels of Kir4.1 were further verified by western blotting, RT-qPCR, and immunofluorescence. By inhibiting Kir4.1, the pain insensitivity of BTBR mice improved, confirming that a high expression level of Kir4.1 was highly correlated with decreased pain sensitivity in ASD. Meanwhile, we found that the anxiety behaviours and the social novelty recognition were changed after CFA induced inflammatory pain. And after inhibiting Kir4.1, the stereotyped behaviours and social novelty recognition of BTBR mice were also improved. Further, we found that the expression levels of glutamate transporters, excitatory amino acid transporter 1 (EAAT1), and excitatory amino acid transporter 2 (EAAT2) were increased in the DRG of BTBR mice but decreased after inhibiting Kir4.1. This suggests that Kir4.1 may play a key role in the improvement of pain insensitivity in ASD by regulating glutamate transporters. In conclusion, our findings revealed the possible mechanism and role of Kir4.1 in the pain insensitivity in ASD, using bioinformatics analyses and animal experiments, and provided a theoretical basis for clinically targeted intervention in ASD. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Li, Xiang AU - Li X AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Li, Qi AU - Li Q AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Xu, Lisha AU - Xu L AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Ma, Zhe AU - Ma Z AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Shi, Yaxin AU - Shi Y AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Zhang, Xirui AU - Zhang X AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Yang, Yuan AU - Yang Y AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Wang, Jia AU - Wang J AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. FAU - Fan, Lili AU - Fan L AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. Electronic address: 102337@hrbmu.edu.cn. FAU - Wu, Lijie AU - Wu L AD - Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, China. Electronic address: wulijiehyd@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230328 PL - Netherlands TA - Biochim Biophys Acta Mol Basis Dis JT - Biochimica et biophysica acta. Molecular basis of disease JID - 101731730 RN - 0 (Glutamates) SB - IM MH - Mice MH - Animals MH - *Autism Spectrum Disorder/genetics MH - Quality of Life MH - Mice, Inbred Strains MH - Pain/genetics MH - Glutamates MH - Disease Models, Animal OTO - NOTNLM OT - Autism spectrum disorder OT - Dorsal root ganglia OT - Glutamate transporter OT - Kir4.1 OT - Pain sensation abnormality COIS- Declaration of competing interest The authors declare that they have no competing financial interests or personal relationships that may have influenced the work reported in this study. EDAT- 2023/03/30 06:00 MHDA- 2023/05/08 10:17 CRDT- 2023/03/29 19:29 PHST- 2022/12/30 00:00 [received] PHST- 2023/03/19 00:00 [revised] PHST- 2023/03/21 00:00 [accepted] PHST- 2023/05/08 10:17 [medline] PHST- 2023/03/30 06:00 [pubmed] PHST- 2023/03/29 19:29 [entrez] AID - S0925-4439(23)00066-2 [pii] AID - 10.1016/j.bbadis.2023.166700 [doi] PST - ppublish SO - Biochim Biophys Acta Mol Basis Dis. 2023 Jun;1869(5):166700. doi: 10.1016/j.bbadis.2023.166700. Epub 2023 Mar 28.