PMID- 37043976 OWN - NLM STAT- MEDLINE DCOM- 20230614 LR - 20230615 IS - 1878-3279 (Electronic) IS - 0171-2985 (Linking) VI - 228 IP - 3 DP - 2023 May TI - Ubiquitin-specific protease 34 in macrophages limits CD8 T cell-mediated onset of vitiligo in mice. PG - 152383 LID - S0171-2985(23)00051-7 [pii] LID - 10.1016/j.imbio.2023.152383 [doi] AB - As an autoimmune disorder, vitiligo is characterized by depigmented skin macules. CD8(+)T cells and macrophages enrichment promote the onset of vitiligo, while the role of macrophages to CD8(+)T is not well deciphered. To develop a mouse model of vitiligo with prominent epidermal depigmentation, Krt14-Kitl* transgenic mice containing an elevated number of melanocytes in the epidermis with membrane-bound Kit ligand (Kitl*) were adoptively transferred with premelanosome protein (PMEL) CD8(+) T cells. On the other hand, Krt14-Kitl* mice were mated with ubiquitin-specific protease 34 (USP34)(MKO) mice to decipher the role of USP34 in vitiligo. Vitiligo scores and PMEL CD8(+) T cell enrichment were detected with flow cytometry. Human peripheral blood mononuclear cells (PBMCs) or mice bone marrow-derived macrophages (BMDMs) were incubated with lipopolysaccharide (LPS), CpG, or co-incubated with KU-55933, an ataxia telangiectasia-mutated (ATM) inhibitor. Chemokine (C-C motif) ligand 2 (CCL2), Ccl5, and interleukin (Il)-12alpha expression was assayed with real-time PCR, and p-IKKalpha/beta was assayed with Western blots. USP34 was up-regulated in the PBMCs of vitiligo patients and LPS-stimulated BMDMs. USP34 deficiency did not affect the differentiation of CD11b(+)F4/80(+) macrophages in the bone marrow. Immunoprecipitation demonstrated the interaction between USP34 and ATM. USP34 deficiency or KU-55933 administration promoted the induction of Ccl2, Ccl5, Il12alpha, and p-IKKalpha/beta in LPS or CpG stimulated BMDMs; KU-55933 administration could not affect the expression of the above molecules in USP34 deficient BMDMs. It further revealed that USP34 deficiency promoted the development of vitiligo with increased PMEL CD8(+) T cell enrichment, which was not affected by KU-55933 administration. USP34 deficiency in macrophages promotes the onset of vitiligo with increased PMEL CD8(+) T cell enrichment, and USP34/ATM complex can be considered as a therapy target. CI - Copyright (c) 2023 Elsevier GmbH. All rights reserved. FAU - Li, He AU - Li H AD - Department of Dermatology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1 Huanghe West Road, Huai'an 223300, Jiangsu, China. FAU - Li, Xiaoqing AU - Li X AD - Department of Dermatology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1 Huanghe West Road, Huai'an 223300, Jiangsu, China. FAU - Kong, Yinghui AU - Kong Y AD - Department of Dermatology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1 Huanghe West Road, Huai'an 223300, Jiangsu, China. FAU - Sun, Weiguo AU - Sun W AD - Department of Dermatology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No. 1 Huanghe West Road, Huai'an 223300, Jiangsu, China. Electronic address: sunwg1242@126.com. LA - eng PT - Journal Article DEP - 20230408 PL - Netherlands TA - Immunobiology JT - Immunobiology JID - 8002742 RN - EC 2.7.11.10 (I-kappa B Kinase) RN - 0 (Lipopolysaccharides) RN - EC 3.4.19.12 (Ubiquitin-Specific Proteases) SB - IM MH - Humans MH - Mice MH - Animals MH - *Vitiligo/metabolism MH - CD8-Positive T-Lymphocytes MH - I-kappa B Kinase MH - Leukocytes, Mononuclear/metabolism MH - Lipopolysaccharides/metabolism MH - Mice, Transgenic MH - Ubiquitin-Specific Proteases/metabolism OTO - NOTNLM OT - ATM OT - CD8(+) T OT - Macrophages OT - USP34 OT - Vitiligo COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/04/13 06:00 MHDA- 2023/06/14 06:42 CRDT- 2023/04/12 18:06 PHST- 2022/12/10 00:00 [received] PHST- 2023/03/30 00:00 [revised] PHST- 2023/04/04 00:00 [accepted] PHST- 2023/06/14 06:42 [medline] PHST- 2023/04/13 06:00 [pubmed] PHST- 2023/04/12 18:06 [entrez] AID - S0171-2985(23)00051-7 [pii] AID - 10.1016/j.imbio.2023.152383 [doi] PST - ppublish SO - Immunobiology. 2023 May;228(3):152383. doi: 10.1016/j.imbio.2023.152383. Epub 2023 Apr 8.