title: Decreases in valosin-containing protein result in increased levels of tau phosphorylated at Ser262/356.
abstract: VCP/p97 is a multifunctional AAA+-ATPase involved in vesicle fusion, proteasomal degradation, and autophagy. Reported dysfunctions of these processes in Alzheimer disease (AD), along with the linkage of VCP/p97 to inclusion body myopathy with Paget's disease and frontotemporal dementia (IBMPFD) led us to examine the possible linkage of VCP to the AD-relevant protein, tau. VCP levels were reduced in AD brains, but not in the cerebral cortex of an AD mouse model, suggesting that VCP reduction occurs upstream of tau pathology. Genetic reduction of VCP in a primary neuronal model led to increases in the levels of tau phosphorylated at Ser(262/356), indicating that VCP may be involved in regulating post-translational processing of tau in AD, demonstrating a possible functional linkage between tau and VCP.
authors: Department of Pharmacology and Physiology, University of Rochester, Rochester, NY, USA.
authors: Philip J
authors: PJ
authors: Dolan
authors: Youngnam N
authors: YN
authors: Jin
authors: Woong
authors: W
authors: Hwang
authors: Gail V W
authors: GV
authors: Johnson
mesh_terms: D000225:Adenine / Q000031:analogs & derivatives / Q000494:pharmacology; D000251:Adenosine Triphosphatases / Q000172:deficiency / Q000235:genetics / Q000378:metabolism*; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000378:metabolism / Q000473:pathology; D000818:Animals; D001343:Autophagy / Q000187:drug effects; D018797:Cell Cycle Proteins / Q000172:deficiency / Q000235:genetics / Q000378:metabolism*; D002540:Cerebral Cortex / Q000166:cytology / Q000473:pathology; D005260:Female; D055785:Gene Knockdown Techniques; D057809:HEK293 Cells; D006801:Humans; D008297:Male; D051379:Mice; D008875:Middle Aged; D009474:Neurons / Q000166:cytology / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D010750:Phosphoproteins / Q000737:chemistry / Q000378:metabolism; D010766:Phosphorylation / Q000187:drug effects; D051381:Rats; D012694:Serine / Q000378:metabolism*; D012995:Solubility; D000074405:Valosin Containing Protein; D016875:tau Proteins / Q000737:chemistry* / Q000378:metabolism*
chemical_list: D018797:Cell Cycle Proteins; D010750:Phosphoproteins; D016875:tau Proteins; D012694:Serine; C025946:3-methyladenine; D000251:Adenosine Triphosphatases; C000614178:VCP protein, human; D000074405:Valosin Containing Protein; C000614179:Vcp protein, mouse; C000614180:Vcp protein, rat; D000225:Adenine