Genes: MAPT, MAPT-AS1, Mapt
Mutations: MAPT N279K
Modification: MAPT: Knock-In; MAPT-AS1: Knock-In; Mapt: Knock-Out
Disease Relevance: Frontotemporal Dementia
Strain Name: B6J.B6N-Tc(HSA17*N279K)1Mdk/J
Genetic Background: C57BL/6J
Availability: Available from The Jackson Laboratory, Stock No. 035794.
In these targeted replacement mice, developed by Michael Koob and colleagues at the University of Minnesota, a 190-kb region from human chromosome 17—encompassing the entire human MAPT gene—replaces the corresponding Mapt-containing region on mouse chromosome 11.
MAPT(H1.0*N279K)-GR mice carry the MAPT H1 haplotype with the pathogenic N279K mutation linked to frontotemporal dementia. Mice carrying wild-type H1 or the H2 haplotype are also available (see Related Strains below).
These transchromosomic lines are unique among mouse models—in addition to the entire MAPT gene, they carry MAPT-AS1, a natural antisense transcript that regulates MAPT translation (Simone et al., 2021; see May 2021 news).
MAPT(H1.0*N279K)-GR mice express human tau protein at endogenous levels, and all six tau protein isoforms are generated. MAPT-AS1 transcripts are expressed.
Homozygous mice are viable and fertile.
A 190-kb region from human chromosome 17—including MAPT (H1 haplotype) with the N279K mutation, MAPT-AS1, and the SPPL2C sequence, which is contained within MAPT-AS1—replaced a 157-kb region on mouse chromosome 11 between, but not including, Crhr1 and Kansl1.
MAPT(H1.0)-GR. These transchromosomic mice carry human MAPT (wild-type H1 haplotype) and MAPT-AS1 knocked into the mouse Mapt locus. They express human tau protein at endogenous levels, and all six tau protein isoforms are generated. MAPT-AS1 transcripts are expressed. MAPT(H1.0)-GR mice are available from The Jackson Laboratory, Stock No. 035398.
MAPT(H2.1)-GR. These transchromosomic mice carry human MAPT (H2 haplotype) and MAPT-AS1 knocked into the mouse Mapt locus. They express human tau protein at endogenous levels, and all six tau protein isoforms are generated. MAPT-AS1 transcripts are expressed. MAPT(H2.1)-GR mice are available from The Jackson Laboratory, Stock No. 033668.
When visualized, these models will distributed over a 18 month timeline demarcated at the following intervals: 1mo, 3mo, 6mo, 9mo, 12mo, 15mo, 18mo+.
- Neuronal Loss
- Synaptic Loss
- Changes in LTP/LTD
- Cognitive Impairment
Last Updated: 30 Jul 2021
Research Models Citations
- Simone R, Javad F, Emmett W, Wilkins OG, Almeida FL, Barahona-Torres N, Zareba-Paslawska J, Ehteramyan M, Zuccotti P, Modelska A, Siva K, Virdi GS, Mitchell JS, Harley J, Kay VA, Hondhamuni G, Trabzuni D, Ryten M, Wray S, Preza E, Kia DA, Pittman A, Ferrari R, Manzoni C, Lees A, Hardy JA, Denti MA, Quattrone A, Patani R, Svenningsson P, Warner TT, Plagnol V, Ule J, de Silva R. MIR-NATs repress MAPT translation and aid proteostasis in neurodegeneration. Nature. 2021 Jun;594(7861):117-123. Epub 2021 May 19 PubMed.
- Coupland KG, Kim WS, Halliday GM, Hallupp M, Dobson-Stone C, Kwok JB. Role of the Long Non-Coding RNA MAPT-AS1 in Regulation of Microtubule Associated Protein Tau (MAPT) Expression in Parkinson's Disease. PLoS One. 2016;11(6):e0157924. Epub 2016 Jun 23 PubMed.