PMID- 16219306 OWN - NLM STAT- MEDLINE DCOM- 20051219 LR - 20131121 IS - 0014-5793 (Print) IS - 0014-5793 (Linking) VI - 579 IP - 25 DP - 2005 Oct 24 TI - Transgenic mice expressing mutant (N279K) human tau show mutation dependent cognitive deficits without neurofibrillary tangle formation. PG - 5704-12 AB - Mutations in the tau gene, which is located on chromosome 17, were found causative for autosomal dominantly inherited frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17). To determine if cognitive deficits could be caused by tau mutations, two transgenic mouse lines were generated expressing a four-repeat isoform of human tau or its mutant, containing one of the FTDP-17 mutations (WILD mice and N279K mice). In open field test, N279K mice showed hyperactivity in locomotion and rearing. In prepulse inhibition test, N279K mice but not Wild mice showed significant deficits. Both transgenic mice, especially N279K mice, showed impairment in acquisition of spatial learning in Morris water maze. Although both N279K mice and Wild mice acquired passive avoidance as well as non-transgenic mice, N279K mice but not Wild mice showed severe deficits in acquisition of active avoidance. Histological analysis of the present mutant mice did not show any signs of neurofibrillary tangle formations in the brain, and cognitive dysfunction seemed to precede such neuropathological changes or occur independently from them. The behavioral phenotype of N279K mice mimics features of human FTDP-17 and provides a basic model for elucidating mechanisms underlying cognitive deficits in not only FTDP-17, but also diverse tauopathies. FAU - Taniguchi, Taizo AU - Taniguchi T AD - Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Nada-ku, Japan. tanigu@kobe-u.ac.jp FAU - Doe, Nobutaka AU - Doe N FAU - Matsuyama, Shogo AU - Matsuyama S FAU - Kitamura, Yoshihisa AU - Kitamura Y FAU - Mori, Hiroshi AU - Mori H FAU - Saito, Naoaki AU - Saito N FAU - Tanaka, Chikako AU - Tanaka C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20051005 PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (MAPT protein, human) RN - 0 (Nerve Tissue Proteins) RN - 0 (tau Proteins) RN - 7006-34-0 (Asparagine) RN - K3Z4F929H6 (Lysine) SB - IM MH - Alzheimer Disease/*genetics/pathology MH - Animals MH - Asparagine/genetics MH - Avoidance Learning MH - Chromosomes, Human, Pair 17 MH - Cognition Disorders/*genetics MH - *Disease Models, Animal MH - Hippocampus/chemistry MH - Humans MH - Lysine/genetics MH - Maze Learning MH - Mice MH - Mice, Transgenic/*genetics MH - Mutation, Missense MH - Nerve Tissue Proteins/analysis/*genetics/metabolism MH - Neurofibrillary Tangles/pathology MH - Phosphorylation MH - tau Proteins EDAT- 2005/10/13 09:00 MHDA- 2005/12/20 09:00 CRDT- 2005/10/13 09:00 PHST- 2005/08/12 00:00 [received] PHST- 2005/09/09 00:00 [accepted] PHST- 2005/10/13 09:00 [pubmed] PHST- 2005/12/20 09:00 [medline] PHST- 2005/10/13 09:00 [entrez] AID - S0014-5793(05)01168-3 [pii] AID - 10.1016/j.febslet.2005.09.047 [doi] PST - ppublish SO - FEBS Lett. 2005 Oct 24;579(25):5704-12. doi: 10.1016/j.febslet.2005.09.047. Epub 2005 Oct 5.