Research Models

MAPT(H1.0*N279K)-GR

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Species: Mouse
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.

Summary

MAPT(H1.0*N279K)-GR mice are among a series of models developed by Michael Koob and colleagues at the University of Minnesota, collectively referred to as Gene Replacement – Alzheimer’s Disease (GR-AD) mice. In GR-AD mice, “genes of interest are precisely and completely replaced in the mouse genome by their full human orthologs, along with all known overlapping, co-regulated non-coding RNAs (Benzow et al., 2024).”

In MAPT(H1.0*N279K)-GR mice, 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 the wild-type H1 haplotype, H1 with the pathogenic P301L or 10IVS+16 C>T mutations, 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 generate all six tau protein isoforms, and MAPT-AS1 transcripts are expressed. Homozygous mice are viable and fertile.

Further characterization of MAPT(H1.0*N279K)-GR and other GR-AD lines will be conducted as part of the MODEL-AD project. The Jackson Laboratory is distributing GR-AD mice for academic and commercial use without restrictions.

Modification Details

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.

Related Strains

MAPT(H1.0)-GR. These transchromosomic mice carry human MAPT (wild-type H1 haplotype) and MAPT-AS1 knocked into the mouse Mapt locus. They gnerate all six tau protein isoforms. MAPT-AS1 transcripts are expressed. MAPT(H1.0)-GR mice are available from The Jackson Laboratory, Stock No. 035398.

MAPT(H1.0*)P301L-GR. These transchromosomic mice carry human MAPT (H1 haplotype) with the P301L mutation and MAPT-AS1 knocked into the mouse Mapt locus. They generate all six tau protein isoforms. MAPT-AS1 transcripts are expressed. MAPT(H1.0*)P301L-GR mice are available from The Jackson Laboratory, Stock No. 037420.

MAPT 10IVS+16 C>T. These transchromosomic mice carry human MAPT (H1 haplotype with a noncoding mutation in intron 10) and MAPT-AS1 knocked into the mouse Mapt locus. MAPT 10IVS+16 C>T mice are available from The Jackson Laboratory, Stock No. 036664.

MAPT(H2.1)-GR. These transchromosomic mice carry human MAPT (H2 haplotype) and MAPT-AS1 knocked into the mouse Mapt locus. They gnerate all six tau protein isoforms. MAPT-AS1 transcripts are expressed. MAPT(H2.1)-GR mice are available from The Jackson Laboratory, Stock No. 033668.

Phenotype Characterization

When visualized, these models will distributed over a 18 month timeline demarcated at the following intervals: 1mo, 3mo, 6mo, 9mo, 12mo, 15mo, 18mo+.

Absent

No Data

  • Plaques
  • Tangles
  • Neuronal Loss
  • Gliosis
  • Synaptic Loss
  • Changes in LTP/LTD
  • Cognitive Impairment

Last Updated: 13 Feb 2024

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References

Mutations Citations

  1. MAPT N279K
  2. MAPT P301L
  3. MAPT IVS10+16 C>T

News Citations

  1. MIR-NATs: Noncoding RNAs That Rein in Aggregating Proteins?

Research Models Citations

  1. MAPT(H1.0)-GR
  2. MAPT(H1.0*)P301L-GR
  3. MAPT 10IVS+16 C>T
  4. MAPT(H2.1)-GR

Paper Citations

  1. . Gene replacement-Alzheimer's disease (GR-AD): Modeling the genetics of human dementias in mice. Alzheimers Dement. 2024 Feb 11; PubMed.
  2. . MIR-NATs repress MAPT translation and aid proteostasis in neurodegeneration. Nature. 2021 Jun;594(7861):117-123. Epub 2021 May 19 PubMed.

External Citations

  1. MODEL-AD
  2. The Jackson Laboratory, Stock No. 035398.
  3. The Jackson Laboratory, Stock No. 037420
  4. The Jackson Laboratory, Stock No. 036664
  5. The Jackson Laboratory, Stock No. 033668
  6. The Jackson Laboratory, Stock No. 035794

Further Reading

Papers

  1. . 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.