PMID- 35730318 OWN - NLM STAT- MEDLINE DCOM- 20240130 LR - 20240130 IS - 1601-0825 (Electronic) IS - 1354-523X (Linking) VI - 29 IP - 8 DP - 2023 Nov TI - PINK1-mediated mitophagy reduced inflammatory responses to Porphyromonas gingivalis in macrophages. PG - 3665-3676 LID - 10.1111/odi.14286 [doi] AB - OBJECTIVE: Mitochondria are strained by microbial stimuli in the periodontal niche. Damaged mitochondria are cleared by mitophagy. The purpose of the study was to explore whether mitophagy participated in the progress of periodontitis and whether activation of mitophagy can inhibit inflammatory responses to bacterial infection in macrophages. METHODS: Mitophagy-related genes were measured in the healthy and inflamed human gingiva. Bone marrow-derived macrophages (BMDMs) were infected with Porphyromonas gingivalis. Dexmedetomidine, urolithin A, and resveratrol were used to activate mitophagy, while small interference RNA was utilized to knock down PTEN-induced putative protein kinase 1 (PINK1). Activation of mitophagy-related genes and colocalization of them were detected by Western blot and confocal imaging. Damages of mitochondria, accumulation of mitochondrial reactive oxygen species (mtROS), and production of IL-1beta, IL-6, and TNF-alpha were measured. RESULTS: Levels of mitophagy-related genes were decreased in inflamed periodontal tissues and P. gingivalis-infected BMDMs. Dexmedetomidine, urolithin A, and resveratrol activated mitophagy, leading to reduced mitochondria damages, decreased mtROS generation, and inhibited IL-1beta, IL-6, and TNF-alpha production. PINK1 knockdown reduced dexmedetomidine, urolithin A, and resveratrol-induced anti-inflammatory effect. CONCLUSION: Inhibited mitophagy participated in the progress of periodontitis. Activation of mitophagy may become a therapeutic target during the progress of periodontitis by reducing mtROS. CI - (c) 2022 Wiley Periodicals LLC. FAU - Jiang, Ke AU - Jiang K AD - Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. AD - Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. FAU - Li, Jingwen AU - Li J AD - Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. AD - Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. FAU - Jiang, Lishan AU - Jiang L AD - Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. AD - Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. FAU - Li, Houxuan AU - Li H AUID- ORCID: 0000-0002-3798-8628 AD - Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. FAU - Lei, Lang AU - Lei L AUID- ORCID: 0000-0003-2892-040X AD - Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China. LA - eng GR - 2019060009/Nanjing Clinical Research Center for Oral Diseases/ GR - ZKX200047/Nanjing Medical Science and Technique Development Foundation/ GR - 81670996/National Natural Science Foundation of China/ PT - Journal Article DEP - 20220712 PL - Denmark TA - Oral Dis JT - Oral diseases JID - 9508565 RN - 67VB76HONO (Dexmedetomidine) RN - 0 (Interleukin-6) RN - EC 2.7.- (Protein Kinases) RN - Q369O8926L (Resveratrol) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.1 (PTEN-induced putative kinase) MH - Humans MH - *Dexmedetomidine/pharmacology MH - Interleukin-6 MH - Macrophages/metabolism MH - *Mitophagy MH - *Periodontitis MH - *Porphyromonas gingivalis/metabolism MH - Protein Kinases/genetics/metabolism MH - Resveratrol/pharmacology MH - Tumor Necrosis Factor-alpha/metabolism OTO - NOTNLM OT - PINK1 OT - inflammation OT - mitochondria OT - mitophagy OT - periodontitis OT - reactive oxygen species EDAT- 2022/06/23 06:00 MHDA- 2023/12/07 12:42 CRDT- 2022/06/22 04:03 PHST- 2022/06/08 00:00 [revised] PHST- 2022/03/29 00:00 [received] PHST- 2022/06/14 00:00 [accepted] PHST- 2023/12/07 12:42 [medline] PHST- 2022/06/23 06:00 [pubmed] PHST- 2022/06/22 04:03 [entrez] AID - 10.1111/odi.14286 [doi] PST - ppublish SO - Oral Dis. 2023 Nov;29(8):3665-3676. doi: 10.1111/odi.14286. Epub 2022 Jul 12.