Research Models

Selected Results

1 Models

Name Other Names Strain Name Genetic Background Gene Mutation Modification Info Modification Disease Neuropathology Behavior/Cognition Other Phenotype Availability Primary Paper Visualization
Mouse Models (1)
TREM2-IPDxAPP23xPS45, APP23xPS45xIPD C57BL/6 Trem2, APP, PSEN1 APP K670_M671delinsNL (Swedish), PSEN1 G384A Trem2-IPDxAPP23xPS45 mice have a modified murine Trem2 gene (resulting in disruption of the ADAM protease cleavage site after amino acid 157) and carry transgenes for human APP and PSEN1 with the AD-linked Swedish and G384A mutations, respectively. Trem2: Knock-In; APP: Transgenic; PSEN1: Transgenic Alzheimer's Disease Amyloid plaques, plaque-associated neuritic dystrophies, microgliosis. Pathology exacerbated in Trem2-IPDxAPP23xPS45 mice, compared with APP23xPS45 mice expressing wild-type Trem2, at an early—but not late—stage of plaque deposition. Unknown. Microglial maturation accelerated in Trem2-IPDxAPP23xPS45  mice, compared with APP23xPS45 mice expressing wild-type Trem2. TREM2-IPD and PS45 mice are available from Novartis Pharma AG under an MTA. Contact Ivan Galimberti (ivan.galimberti@novartis.com) or Derya Shimshek (derya.shimshek@novartis.com). APP23 mice are available through The Jackson Laboratory Stock# 030504, Live. Dhandapani et al., 2022 Yes

1 Visualizations

AD-related Research Models

Phenotypes Examined

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

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

Trem2-IPDxAPP23xPS45

Observed
  1. X
    Plaques at 12

    Greater numbers of plaques, particularly small plaques, and larger areas occupied by plaques in 3-month-old Trem2-IPDxAPP23xPS45 mice, compared with APP23xPS45 animals. These genotype-dependent differences disappeared by 7 months.

  2. X
    Gliosis at 13

    Increased microgliosis in the vicinity of plaques in 3-month-old Trem2-IPDxAPP23xPS45 mice, compared with APP23xPS45 mice.

  3. X
    Synaptic Loss at 14

    Compared with APP23xPS45 mice, 3-month-old Trem2-IPDxAPP23xPS45 mice had fewer and smaller puncta stained for the presynaptic marker Sv2a (synaptic vesicle glycoprotein 2A) in the vicinity of plaques. These genotype-dependent differences disappeared  by 7 months.

Absent
No Data
  • Tangles at

    No data.

  • Neuronal Loss at

    No data.

  • Changes in LTP/LTD at

    No data.

  • Cognitive Impairment at

    No data.

Genes Mutations Modification Disease Neuropathology Behavior/Cognition
Trem2, APP, PSEN1 APP K670_M671delinsNL (Swedish), PSEN1 G384A Trem2: Knock-In; APP: Transgenic; PSEN1: Transgenic Alzheimer's Disease

Amyloid plaques, plaque-associated neuritic dystrophies, microgliosis. Pathology exacerbated in Trem2-IPDxAPP23xPS45 mice, compared with APP23xPS45 mice expressing wild-type Trem2, at an early—but not late—stage of plaque deposition.

Unknown.

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