PMID- 29185343 OWN - NLM STAT- MEDLINE DCOM- 20171227 LR - 20171227 IS - 1520-4995 (Electronic) IS - 0006-2960 (Linking) VI - 56 IP - 50 DP - 2017 Dec 19 TI - Pyrroloquinoline Quinone, a Redox-Active o-Quinone, Stimulates Mitochondrial Biogenesis by Activating the SIRT1/PGC-1alpha Signaling Pathway. PG - 6615-6625 LID - 10.1021/acs.biochem.7b01185 [doi] AB - Pyrroloquinoline quinone (PQQ), a redox-active o-quinone found in various foods and mammalian tissues, has received an increasing amount of attention because of a number of health benefits that can be attributed to its ability to enhance mitochondrial biogenesis. However, its underlying molecular mechanism remains incompletely understood. We have now established that the exposure of mouse NIH/3T3 fibroblasts to a physiologically relevant concentration of PQQ significantly stimulates mitochondrial biogenesis. The exposure of NIH/3T3 cells to 10-100 nM PQQ for 48 h resulted in increased levels of Mitotracker staining, mitochondrial DNA content, and mitochondrially encoded cytochrome c oxidase subunit 1 (MTCO1) protein. Moreover, we observed that PQQ treatment induces deacetylation of the peroxisome proliferator-activated receptor-gamma-coactivator 1alpha (PGC-1alpha) and facilitates its nuclear translocation and target gene expression but does not affect its protein levels, implying increased activity of the NAD(+)-dependent protein deacetylase sirtuin 1 (SIRT1). Indeed, treatment with a SIRT1 selective inhibitor, EX-527, hampered the ability of PQQ to stimulate PGC-1alpha-mediated mitochondrial biogenesis. We also found that the PQQ treatment caused a concentration-dependent increase in the cellular NAD(+) levels, but not the total NAD(+) and NADH levels. Our results suggest that PQQ-inducible mitochondrial biogenesis can be attributed to activation of the SIRT1/PGC-1alpha signaling pathway by enhancing cellular NAD(+) formation. FAU - Saihara, Kazuhiro AU - Saihara K AD - Department of Biological Chemistry, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Sakai 599-8531, Japan. FAU - Kamikubo, Ryosuke AU - Kamikubo R AD - Department of Biological Chemistry, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Sakai 599-8531, Japan. AD - Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo , Tokyo 113-8657, Japan. FAU - Ikemoto, Kazuto AU - Ikemoto K AUID- ORCID: 0000-0002-5708-1636 AD - Niigata Research Laboratory, Mitsubishi Gas Chemical Company, Inc. , Niigata 950-3112, Japan. FAU - Uchida, Koji AU - Uchida K AD - Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo , Tokyo 113-8657, Japan. FAU - Akagawa, Mitsugu AU - Akagawa M AUID- ORCID: 0000-0002-8735-4738 AD - Department of Biological Chemistry, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Sakai 599-8531, Japan. LA - eng PT - Journal Article DEP - 20171206 PL - United States TA - Biochemistry JT - Biochemistry JID - 0370623 RN - 0 (Benzoquinones) RN - 0 (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha) RN - 0 (Trans-Activators) RN - 0 (Transcription Factors) RN - 3T006GV98U (quinone) RN - 72909-34-3 (PQQ Cofactor) RN - EC 3.5.1.- (SIRT1 protein, human) RN - EC 3.5.1.- (Sirt1 protein, mouse) RN - EC 3.5.1.- (Sirtuin 1) SB - IM MH - Animals MH - Benzoquinones/chemistry/metabolism MH - Fibroblasts MH - Hep G2 Cells MH - Humans MH - Mice MH - Mitochondria/metabolism/physiology MH - NIH 3T3 Cells MH - Organelle Biogenesis MH - Oxidation-Reduction MH - PQQ Cofactor/chemistry/*metabolism MH - Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha/genetics/*metabolism MH - Signal Transduction/drug effects MH - Sirtuin 1/genetics/*metabolism MH - Trans-Activators/metabolism MH - Transcription Factors/metabolism EDAT- 2017/12/01 06:00 MHDA- 2017/12/28 06:00 CRDT- 2017/11/30 06:00 PHST- 2017/12/01 06:00 [pubmed] PHST- 2017/12/28 06:00 [medline] PHST- 2017/11/30 06:00 [entrez] AID - 10.1021/acs.biochem.7b01185 [doi] PST - ppublish SO - Biochemistry. 2017 Dec 19;56(50):6615-6625. doi: 10.1021/acs.biochem.7b01185. Epub 2017 Dec 6.