PMID- 37532554 OWN - NLM STAT- MEDLINE DCOM- 20230804 LR - 20230804 IS - 1347-5215 (Electronic) IS - 0918-6158 (Linking) VI - 46 IP - 8 DP - 2023 TI - The Involvement of Progranulin for alpha-Synuclein Reduction through Autolysosome Formation. PG - 1032-1040 LID - 10.1248/bpb.b22-00711 [doi] AB - Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor symptoms and neuropathological features, such as loss of dopaminergic neurons in the substantia nigra pars compacta and accumulation of alpha-synuclein (alpha-Syn). Progranulin (PGRN) is a secreted growth factor that exhibits anti-inflammatory properties and regulates lysosomal function. Although autophagy-lysosome pathway is the main degradative pathway for alpha-Syn, the molecular mechanistic relationship between PD and PGRN remains unclear. In this study, we investigated the role of PGRN in PD pathology. PGRN protein expression in striatum was increased in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD model mice. Intracerebroventricular (i.c.v.) administration of PGRN ameliorated the decrease in expression of tyrosine hydroxylase, a dopaminergic neuron marker, in MPTP-treated mice. Furthermore, i.c.v. administration of PGRN ameliorated 6-hydroxydopamine-induced motor deficits. In SH-SY5Y human neuroblastoma cells, 1-methyl-4-phenylpyridinium ion (MPP(+)), an active metabolite of MPTP, increased alpha-Syn expression. In contrast, PGRN ameliorated MPP(+)-induced increase in alpha-Syn expression. Although PGRN decreased the levels of autophagy-related proteins Sequestosome-1 (p62) and MAP1LC3 (LC3)-II, PGRN did not influence the phosphorylation of AMP-activated protein kinase and mechanistic target of rapamycin, which are also proteins that regulate autophagy. Immunostaining analysis showed that PGRN ameliorated MPP(+)-induced increase of LC3 puncta, indicator of autophagosome, and co-localization of LC3 and alpha-Syn. The DALGreen assay showed that PGRN ameliorated MPP(+)-induced decreasing trend of autolysosomes. These results suggest that PGRN participates in alpha-Syn degradation via acceleration of the autophagy-lysosome pathway and is a potential therapeutic target for PD. FAU - Fujimori, Honoka AU - Fujimori H AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University. FAU - Ohba, Takuya AU - Ohba T AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University. FAU - Nakamura, Shinsuke AU - Nakamura S AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University. FAU - Shimazawa, Masamitsu AU - Shimazawa M AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University. AD - Lab. of Collaborative Research for Innovative Drug Discovery, Gifu Pharmaceutical University. FAU - Hara, Hideaki AU - Hara H AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University. AD - Lab. of Collaborative Research for Innovative Drug Discovery, Gifu Pharmaceutical University. LA - eng PT - Journal Article PL - Japan TA - Biol Pharm Bull JT - Biological & pharmaceutical bulletin JID - 9311984 RN - 9P21XSP91P (1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine) RN - 0 (alpha-Synuclein) RN - 0 (Progranulins) SB - IM MH - Animals MH - Humans MH - Mice MH - 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/adverse effects MH - alpha-Synuclein/metabolism MH - Disease Models, Animal MH - Dopaminergic Neurons/metabolism MH - Lysosomes/metabolism MH - Mice, Inbred C57BL MH - *Neuroblastoma/metabolism MH - *Parkinson Disease/drug therapy/metabolism MH - Progranulins/metabolism OTO - NOTNLM OT - Parkinson's disease OT - autophagy OT - lysosome OT - progranulin OT - alpha-synuclein EDAT- 2023/08/03 01:06 MHDA- 2023/08/04 06:43 CRDT- 2023/08/02 21:38 PHST- 2023/08/04 06:43 [medline] PHST- 2023/08/03 01:06 [pubmed] PHST- 2023/08/02 21:38 [entrez] AID - 10.1248/bpb.b22-00711 [doi] PST - ppublish SO - Biol Pharm Bull. 2023;46(8):1032-1040. doi: 10.1248/bpb.b22-00711.