PMID- 25428250 OWN - NLM STAT- MEDLINE DCOM- 20160229 LR - 20220311 IS - 1875-8908 (Electronic) IS - 1387-2877 (Linking) VI - 45 IP - 1 DP - 2015 TI - Cathepsin D in a murine model of frontotemporal dementia with Parkinsonism-linked to chromosome 17. PG - 1-14 LID - 10.3233/JAD-140456 [doi] AB - Tauopathies, such as Alzheimer's disease (AD) and Frontotemporal dementia with Parkinsonism linked to chromosome 17 (FTDP-17), are characterized by tau accumulation. This accumulation could result from alterations in tau degradation by either the ubiquitin-proteasome system or the autophagy-lysosomal pathway. To analyze a possible alteration of the autophagy-lysosomal pathway in transgenic mice expressing human tau with three FTDP-17 missense mutations (TauVLW mice), we studied the lysosomal enzyme Cathepsin D. The hippocampi of TauVLW mice, where the human mutant tau accumulates, showed both increased Cathepsin D and partial colocalization of Cathepsin D with human mutant tau. At the ultrastructural level, some multivesicular bodies showed human mutant tau-immunopositive vesicles. This finding could provide insights into the molecular mechanisms of tau degradation in human tauopathies. FAU - Fernandez-Montoya, Julia AU - Fernandez-Montoya J AD - Departamento de Anatomia, Histologia y Neurociencia, Facultad de Medicina, Universidad Autonoma de Madrid, Madrid, Spain. FAU - Perez, Mar AU - Perez M AD - Departamento de Anatomia, Histologia y Neurociencia, Facultad de Medicina, Universidad Autonoma de Madrid, Madrid, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Alzheimers Dis JT - Journal of Alzheimer's disease : JAD JID - 9814863 RN - 0 (Nerve Tissue Proteins) RN - 0 (tau Proteins) RN - EC 3.4.23.5 (Cathepsin D) SB - IM MH - Age Factors MH - Animals MH - Cathepsin D/*metabolism MH - Chromosomes, Human, Pair 17/*genetics MH - Disease Models, Animal MH - Frontotemporal Dementia/*genetics MH - Gene Expression Regulation, Enzymologic/*genetics MH - Hippocampus/*enzymology/pathology/ultrastructure MH - Humans MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Microscopy, Confocal MH - Microscopy, Electron, Scanning MH - Mutation, Missense MH - Nerve Tissue Proteins/metabolism MH - tau Proteins/genetics OTO - NOTNLM OT - Cathepsin D OT - FTDP-17 OT - lysosomal system OT - mutated tau EDAT- 2014/11/28 06:00 MHDA- 2016/03/02 06:00 CRDT- 2014/11/28 06:00 PHST- 2014/11/28 06:00 [entrez] PHST- 2014/11/28 06:00 [pubmed] PHST- 2016/03/02 06:00 [medline] AID - T438232510L11851 [pii] AID - 10.3233/JAD-140456 [doi] PST - ppublish SO - J Alzheimers Dis. 2015;45(1):1-14. doi: 10.3233/JAD-140456.