PMID- 35128379 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220208 IS - 2590-1532 (Electronic) IS - 2590-1532 (Linking) VI - 4 IP - 1 DP - 2022 Mar TI - TNFAIP8 modulates the survival and immune activity of Th17 cells via p53/ p21/ MDM2 pathway after acute insult. PG - 100062 LID - 10.1016/j.cytox.2022.100062 [doi] LID - 100062 AB - Th17 cells induced immunosuppression plays a vital role in sepsis. As a member of the tumor necrosis factor alpha induced protein 8 (TNFAIP8) family, TNFAIP8 is associated with different physiopathological conditions with immunological responses. However, its potential roles in regulating Th17 cells after the acute insult have not been fully elucidated. In this study, sepsis was induced by cecal ligation and puncture (CLP) in the male adult C57BL/6 mice. The stable TNFAIP8 knockdown (KD) Th17 cells were established by infecting with lentivirus carrying TNFAIP8-specific shRNA. CCK-8 assay was conducted to evaluate Th17 cell proliferation, and Annexin V/7-AAD assay was applied for apoptosis measurement by flow cytometry. The alterations of p53/ p21/ MDM2 pathway were assessed by Western blot. We observed that a high TNFAIP8 expression level was related to acute injury in septic mice. TNFAIP8 silencing suppressed Th17 cell proliferation and cytokine production in vivo and in vitro. In addition, TNFAIP8 KD increased Th17 cell apoptosis in septic mice. Furthermore, TNFAIP8 seems to affect the immune function of Th17 cells by regulating p53/ p21/ MDM2 signaling processes. We found that TNFAIP8 KD caused the up-regulation of P21 and MDM2, and also elevated p53 protein level during sepsis. Pharmacological inhibition of p53 partially rescued cell proliferation and apoptotic effects of TNFAIP8 KD. In summary, our work suggests that TNFAIP8 modulates the survival and immune function of Th17 cells after acute insult, which was possibly mediated through the p53/ p21/ MDM2 pathway. CI - (c) 2022 Published by Elsevier Ltd. FAU - Cheng, Xiaobin AU - Cheng X AD - Department of Intensive Care Unit, Hubei Provincial Hospital of Traditional Chinese Medicine, China. FAU - Shen, Xiaocheng AU - Shen X AD - Department of Intensive Care Unit, Wuxi Fifth People's Hospital, China. FAU - Wang, Min AU - Wang M AD - Department of Intensive Care Unit, Hubei Provincial Hospital of Traditional Chinese Medicine, China. FAU - Li, Jing AU - Li J AD - Department of Intensive Care Unit, Hubei Provincial Hospital of Traditional Chinese Medicine, China. FAU - Li, Gang AU - Li G AD - Department of Intensive Care Unit, Hubei Provincial Hospital of Traditional Chinese Medicine, China. LA - eng PT - Journal Article DEP - 20220118 PL - Netherlands TA - Cytokine X JT - Cytokine: X JID - 101743248 PMC - PMC8803581 OTO - NOTNLM OT - Immune OT - P53 OT - TNFAIP8 OT - Th17 cells COIS- 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- 2022/02/08 06:00 MHDA- 2022/02/08 06:01 PMCR- 2022/01/18 CRDT- 2022/02/07 05:37 PHST- 2021/01/12 00:00 [received] PHST- 2021/09/26 00:00 [revised] PHST- 2022/01/13 00:00 [accepted] PHST- 2022/02/07 05:37 [entrez] PHST- 2022/02/08 06:00 [pubmed] PHST- 2022/02/08 06:01 [medline] PHST- 2022/01/18 00:00 [pmc-release] AID - S2590-1532(22)00001-5 [pii] AID - 100062 [pii] AID - 10.1016/j.cytox.2022.100062 [doi] PST - epublish SO - Cytokine X. 2022 Jan 18;4(1):100062. doi: 10.1016/j.cytox.2022.100062. eCollection 2022 Mar.