PMID- 27641626 OWN - NLM STAT- MEDLINE DCOM- 20180604 LR - 20191210 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Sep 19 TI - Quantitative and combinatory determination of in situ phosphorylation of tau and its FTDP-17 mutants. PG - 33479 LID - 10.1038/srep33479 [doi] LID - 33479 AB - Tau is hyperphosphorylated in the brains of patients with tauopathies, such as Alzheimer's disease and frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17). However, neither the mechanism of hyperphosphorylation nor its contribution to pathogenesis is known. We applied Phos-tag SDS-PAGE, a phosphoaffinity electrophoresis, to the analysis of tau phosphorylation in vitro by Cdk5, in cultured cells and in mouse brain. Here, we found that Cdk5-p25 phosphorylated tau in vitro at Ser404, Ser235, Thr205 and Ser202 in this order. In contrast in cultured cells, Ser404 was preferentially phosphorylated by Cdk5-p35, whereas Thr205 was not phosphorylated. Ser202 and Ser235 were phosphorylated by endogenous kinases. Tau exhibited ~12 phosphorylation isotypes in COS-7 cells with different combinations of phosphorylation at Thr181, Ser202, Thr231, Ser235 and Ser404. These phosphorylation sites were similar to tau phosphorylated in mouse brains. FTDP-17 tau with a mutation in the C-terminal region had different banding patterns, indicating a different phosphorylation pattern. In particular, it was clear that the R406W mutation causes loss of Ser404 phosphorylation. These results demonstrate the usefulness of the Phos-tag technique in the quantitative analysis of site-specific in vivo phosphorylation of tau and provide detailed information on in situ combinatory phosphorylation of tau. FAU - Kimura, Taeko AU - Kimura T AD - Laboratory of Molecular Neuroscience, Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. FAU - Hosokawa, Tomohisa AU - Hosokawa T AD - Laboratory of Molecular Neuroscience, Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. FAU - Taoka, Masato AU - Taoka M AD - Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. FAU - Tsutsumi, Koji AU - Tsutsumi K AD - Laboratory of Molecular Neuroscience, Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. FAU - Ando, Kanae AU - Ando K AD - Laboratory of Molecular Neuroscience, Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. FAU - Ishiguro, Koichi AU - Ishiguro K AD - Juntendo University, Tokyo, 113-0033, Japan. FAU - Hosokawa, Masato AU - Hosokawa M AD - Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo 156-8506, Japan. FAU - Hasegawa, Masato AU - Hasegawa M AD - Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo 156-8506, Japan. FAU - Hisanaga, Shin-Ichi AU - Hisanaga S AD - Laboratory of Molecular Neuroscience, Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160919 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Mutant Proteins) RN - 0 (tau Proteins) RN - EC 2.7.11.1 (Cyclin-Dependent Kinase 5) RN - EC 2.7.11.22 (CDK5 protein, human) RN - OF5P57N2ZX (Alanine) SB - IM MH - Alanine/genetics MH - Amino Acid Sequence MH - Animals MH - Brain/metabolism/pathology MH - COS Cells MH - Chlorocebus aethiops MH - Cyclin-Dependent Kinase 5/metabolism MH - Frontotemporal Dementia/*genetics/*metabolism MH - Mice MH - Models, Biological MH - Mutant Proteins/chemistry/metabolism MH - Mutation/*genetics MH - Phosphorylation MH - tau Proteins/chemistry/*metabolism PMC - PMC5027580 EDAT- 2016/09/20 06:00 MHDA- 2018/06/05 06:00 PMCR- 2016/09/19 CRDT- 2016/09/20 06:00 PHST- 2016/03/11 00:00 [received] PHST- 2016/08/24 00:00 [accepted] PHST- 2016/09/20 06:00 [entrez] PHST- 2016/09/20 06:00 [pubmed] PHST- 2018/06/05 06:00 [medline] PHST- 2016/09/19 00:00 [pmc-release] AID - srep33479 [pii] AID - 10.1038/srep33479 [doi] PST - epublish SO - Sci Rep. 2016 Sep 19;6:33479. doi: 10.1038/srep33479.