PMID- 34391816 OWN - NLM STAT- MEDLINE DCOM- 20211210 LR - 20220531 IS - 1090-2139 (Electronic) IS - 0889-1591 (Linking) VI - 98 DP - 2021 Nov TI - Innate immune regulates cutaneous sensory IL-13 receptor alpha 2 to promote atopic dermatitis. PG - 28-39 LID - S0889-1591(21)00501-8 [pii] LID - 10.1016/j.bbi.2021.08.211 [doi] AB - The clinical significance and regulators of IL-13Ralpha2 in itch and atopic dermatitis (AD) remain unclear. To identify disease-driven regulatory circuits of IL-13Ralpha2, transcriptomic/pathological analysis was performed in skin from patients with AD, psoriasis, healthy subjects, and murine AD model. Functionality was investigated in sensory neurons, keratinocytes and animal model, by using knockdown (KD), calcium imaging, RNA-seq, cytokine arrays, pharmacological assays, and behavioural investigations. In our study, an upregulated IL-13Ralpha2 expression was revealed in skin of AD patients, but not psoriasis, in a disease activity-dependent manner. In cultured human keratinocytes, IL-13 increased IL-13Ralpha2 transcription levels, and this were downregulated by IL-13Ralpha1KD. IL-13Ralpha2KD reduced transcription levels of EDNRA, CCL20, CCL26. In contrast, sensory neuron-derived IL-13Ralpha2 was upregulated by TLR2 heterodimer agonists, Pam3CSK4 and FSL-1. In a mouse cheek model, pre-administration of Pam3CSK4 and FSL-1 enhanced IL-13-elicited scratching behaviour. Consistently, in cultured sensory neurons Pam3CSK4 enhanced IL-13-elicted calcium transients, increased number of responders, and orchestrated chemerin, CCL17 and CCL22 release. These release was inhibited by IL-13Ralpha2KD. Collectively, IL-13 regulates keratinocyte-derived IL-13Ralpha2 and TLR2 to modulate neuronal IL-13Ralpha2, thereby promoting neurogenic inflammation and exacerbating AD and itch. Thus, the cutaneous IL-13-IL-13Ralpha2 and neuronal TLR2-IL-13Ralpha2 pathway represent important targets to treat AD and itch. CI - Copyright (c) 2021 The Author(s). Published by Elsevier Inc. All rights reserved. FAU - Xiao, Song AU - Xiao S AD - School of Life Sciences, Henan University, China. FAU - Lu, Zhiping AU - Lu Z AD - School of Life Sciences, Henan University, China. FAU - Steinhoff, Martin AU - Steinhoff M AD - Department of Dermatology and Venereology, Hamad Medical Corporation, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Department of Dermatology, Weill Cornell Medicine-Qatar, Doha, Qatar; Qatar University, College of Medicine, Doha, Qatar; Department of Dermatology, Weill Cornell Medicine, New York, USA. FAU - Li, Yanqing AU - Li Y AD - School of Life Sciences, Henan University, China. FAU - Buhl, Timo AU - Buhl T AD - Department of Dermatology, Venereology and Allergology, University Medical Centre Gottingen, Germany. FAU - Fischer, Michael AU - Fischer M AD - Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria. FAU - Chen, Weiwei AU - Chen W AD - School of Life Sciences, Henan University, China. FAU - Cheng, Wenke AU - Cheng W AD - School of Life Sciences, Henan University, China. FAU - Zhu, Renkai AU - Zhu R AD - School of Life Sciences, Henan University, China. FAU - Yan, Xinrong AU - Yan X AD - School of Life Sciences, Henan University, China. FAU - Yang, Hua AU - Yang H AD - School of Life Sciences, Henan University, China. FAU - Liu, Yang AU - Liu Y AD - School of Life Sciences, Henan University, China. FAU - Dou, Yu AU - Dou Y AD - School of Life Sciences, Henan University, China. FAU - Wang, Wanzhi AU - Wang W AD - School of Life Sciences, Henan University, China. FAU - Wang, Jiafu AU - Wang J AD - School of Life Sciences, Henan University, China; School of Biotechnology, Faculty of Science and Health, Dublin City University, Glasnevin, Dublin 9, Ireland. Electronic address: Jiafu.wang@dcu.ie. FAU - Meng, Jianghui AU - Meng J AD - School of Life Sciences, Henan University, China; National Institute for Cellular Biotechnology, Faculty of Science and Health, Dublin City University, Glasnevin, Dublin 9, Ireland. Electronic address: Jianghui.meng@dcu.ie. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210813 PL - Netherlands TA - Brain Behav Immun JT - Brain, behavior, and immunity JID - 8800478 RN - 0 (Chemokines) RN - 0 (Interleukin-13 Receptor alpha2 Subunit) RN - 0 (RARRES2 protein, human) RN - 0 (Receptors, Interleukin-13) SB - IM MH - Animals MH - Chemokines MH - *Dermatitis, Atopic MH - Humans MH - Immunity, Innate MH - Interleukin-13 Receptor alpha2 Subunit MH - Keratinocytes MH - Mice MH - Receptors, Interleukin-13 MH - Skin OTO - NOTNLM OT - Atopic dermatitis OT - IL-13, Cytokine OT - IL-13Ralpha1 and 2 OT - Innate immune OT - Toll-like receptor EDAT- 2021/08/16 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/08/15 20:37 PHST- 2021/04/09 00:00 [received] PHST- 2021/08/05 00:00 [revised] PHST- 2021/08/06 00:00 [accepted] PHST- 2021/08/16 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/08/15 20:37 [entrez] AID - S0889-1591(21)00501-8 [pii] AID - 10.1016/j.bbi.2021.08.211 [doi] PST - ppublish SO - Brain Behav Immun. 2021 Nov;98:28-39. doi: 10.1016/j.bbi.2021.08.211. Epub 2021 Aug 13.