PMID- 35911694 OWN - NLM STAT- MEDLINE DCOM- 20220802 LR - 20220804 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Involvement of Histone Lysine Crotonylation in the Regulation of Nerve-Injury-Induced Neuropathic Pain. PG - 885685 LID - 10.3389/fimmu.2022.885685 [doi] LID - 885685 AB - Histone lysine crotonylation (KCR), a novel epigenetic modification, is important in regulating a broad spectrum of biological processes and various diseases. However, whether KCR is involved in neuropathic pain remains to be elucidated. We found KCR occurs in macrophages, sensory neurons, and satellite glial cells of trigeminal ganglia (TG), neurons, astrocytes, and microglia of the medulla oblongata. KCR in TG was detected mainly in small and medium sensory neurons, to a lesser extent in large neurons. Peripheral nerve injury elevated KCR levels in macrophages in the trigeminal and dorsal root ganglia and microglia in the medulla oblongata but reduced KCR levels in sensory neurons. Inhibition of histone crotonyltransferases (p300) by intra-TG or intrathecal administration of C646 significantly alleviated partial infraorbital nerve transection (pIONT)- or spinal nerve ligation (SNL)-induced mechanical allodynia and thermal hyperalgesia. Intra-TG or intrathecal administration of Crotonyl coenzyme A trilithium salt to upregulate KCR dose-dependently induced mechanical allodynia and thermal hyperalgesia in mice. Mechanismly, inhibition of p300 alleviated pIONT-induced macrophage activation and reduced the expression of pain-related inflammatory cytokines Tnfalpha, Il1beta and chemokines Ccl2 and Cxcl10. Correspondingly, exogenous crotonyl-CoA induced macrophage activation and the expression of Tnfalpha, Il1beta, Il6, Ccl2 and Ccl7 in TG, which C646 can repress. These findings suggest that histone crotonylation might be functionally involved in neuropathic pain and neuroinflammation regulation. CI - Copyright (c) 2022 Zou, Bai, Kong, Xu, Ding, Zhang, Dong, Ling and Jiang. FAU - Zou, Yu AU - Zou Y AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. FAU - Bai, Xue-Hui AU - Bai XH AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. FAU - Kong, Ling-Chi AU - Kong LC AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. FAU - Xu, Fei-Fei AU - Xu FF AD - Medical School of Nantong University, Nantong, China. FAU - Ding, Ting-Yu AU - Ding TY AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. FAU - Zhang, Peng-Fei AU - Zhang PF AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. FAU - Dong, Fu-Lu AU - Dong FL AD - Medical School of Nantong University, Nantong, China. FAU - Ling, Yue-Juan AU - Ling YJ AD - Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China. FAU - Jiang, Bao-Chun AU - Jiang BC AD - Pain Research Laboratory, Institute of Nautical Medicine, Nantong University, Nantong, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220714 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Histones) RN - 0 (Tumor Necrosis Factor-alpha) RN - K3Z4F929H6 (Lysine) SB - IM MH - Animals MH - Histones/metabolism MH - *Hyperalgesia/etiology/metabolism MH - Lysine MH - Mice MH - *Neuralgia/etiology/metabolism MH - Sensory Receptor Cells/metabolism MH - Tumor Necrosis Factor-alpha/metabolism PMC - PMC9329947 OTO - NOTNLM OT - chemokine OT - histone crotonylation OT - inflammatory cytokines OT - macrophage OT - neuropathic pain OT - partial infraorbital nerve transection 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- 2022/08/02 06:00 MHDA- 2022/08/03 06:00 PMCR- 2022/01/01 CRDT- 2022/08/01 03:50 PHST- 2022/02/28 00:00 [received] PHST- 2022/06/22 00:00 [accepted] PHST- 2022/08/01 03:50 [entrez] PHST- 2022/08/02 06:00 [pubmed] PHST- 2022/08/03 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2022.885685 [doi] PST - epublish SO - Front Immunol. 2022 Jul 14;13:885685. doi: 10.3389/fimmu.2022.885685. eCollection 2022.