Double transgenic combined Amyloid and Tau mouse model – APP[V717I]xTau[P301S] mouse model
Eévaluer des traitements multi-cibles chez InnoSer combinaison APPxTau maladie d’InnoSer
Characteristics of the combined APP[V717I]xTau[P301S] mouse model
The double transgenic APP[V717I]xTau[P301S] mouse model leverages two well-established transgenic mouse models of amyloid (APP[V717I] mouse model) and tau (Tau[P301S] mouse model) pathology. The double transgenic mice express human APP[V7I7I] with the London mutation and human Tau[P301S] (4R/2N) under control of the neuron-specific Thy-1 promoter, resulting in the combined and progressive development of β-amyloid and tau pathology within the same animal.
The APP[V717I]xTau[P301S] mouse model develops significant spatial learning and memory impairments in the Morris water maze from approximately 6.5 months of age, reflecting functional consequences of combined amyloid and Tau pathology. At later stages (around 9 months of age), the double transgenic mice also exhibit progressive motor deficits, including impaired rotarod performance and clasping behavior, indicative of advancing neurodegenerative processes.
Building on the robust amyloid phenotype of the APP[V717I] model and the aggressive Tau pathology of InnoSer’s Tau[P301S] model, the APPxTau[P301S] mouse provides a highly translational platform for comprehensive preclinical efficacy studies in Alzheimer’s disease.
✓ Double transgenic APPxTau show robust amyloid-β plaques and tau pathology across cortex, hippocampus and subiculum from an age of 8 months
✓ Amyloid-β plaques and tau pathology in the APP[V717I]xTau[P301S] mouse model is associated with robust neuroinflammation phenotype (astrocytosis, microgliosis) in cortex and subiculum at 9 months of age
✓ The double transgenic mice show cognitive impairment in Morris Water Maze paradigm from an age of 6.5 months
✓ APPxTau mice show progressive motoric impairment from an age of 9 months
Take advantage of InnoSer’s expertise, flexibility, and collaborative approach for your research. We support you in identifying new drug candidates, characterizing their pharmacological properties, and conducting rigorous safety and efficacy studies with state-of-the-art behavioral, bioanalytical, and histopathological readouts.
Example data featuring the APP[V717I]xTau[P301S] mouse model of Alzheimer’s disease

Progressive accumulation of plaque deposition (LOC), hyperphosphorylated Tau (AT100 = pThr212/pSer214 Tau), astrocytosis (GFAP) and microgliosis (CD45) in the cortex as measured by IHC
Data shown as mean ± SEM, n = 8, no data for WT at 11.2 months. Statistics: One-Way ANOVA, Tukey’s multiple comparison.

Preliminary data suggest Aβ accelerates the onset of and aggravates hTau pathology in APP[V717I]xTAU[P301S] transgenic mice
At 13 to 14 months of age hyperphosphorylation of Tau (AT8 staining) is significantly increased in APP[V717I] x Tau[P301S] transgenic mice compared to heterozygous Tau[P301S] mice, suggesting an interplay between APP / Ab and Tau. The onset of Tau hyperphosphorylation (at 8 months of age) seems accelerated as well.
The figure shows a quantification of AT8 (pTau S202/T205) positive neurons using IHC in the cortex. Similar patterns are detected in other brain regions with other pTau epitopes (AT100 in CA1 of the hippocampus and the cortex).
C'est ici que commence votre recherche sur la maladie d'Alzheimer.
Découvrez notre comparatif, élaboré par des experts, des modèles murins disponibles afin de prendre des décisions plus rapides et fondées sur des données. Consultez un exemple de calendrier d'étude, les paramètres de mesure recommandés et des exemples de données, notamment des ensembles de données de validation, pour les différents modèles murins.
Key readouts in the combined APP[V717I]xTau[P301S] mouse model
Original literature describing the combined Amyloid and Tau mouse model
- Terwel et al., 2008. Amyloid activates GSK-3beta to aggravate neuronal tauopathy in bigenic mice. DOI: 10.2353/ajpath.2008.070904
- Chong et al., 2011. Synaptic dysfunction in hippocampus of transgenic mouse models of Alzheimer’s disease: A Multi-electrode array study. DOI: 10.1016/j.nbd.2011.07.006
Les personnes qui travaillent sur vos recherches

Sofie Carmans, docteure
Chercheur principal en neurologie

Thomas Vogels, docteur ès sciences
Chercheur principal en neurologie
Foire aux questions
Does the APPxTau[P301S] display both amyloid and tau pathology, and why is it relevant in terms of Alzheimer’s disease modelling?
Yes, InnoSer’s internal characterisation datasets show that the double transgenic APP[V717I]xTau[P301S] mouse model develops extracellular amyloid beta plaques (amyloid plaque load detected as LOC+ diffuse areas) and tau pathology (hyperphosphorylated tau detected by AT100+ regions) across the cortex and subiculum from 9 to 13 months of age, at which robust pathology is observed.
Importantly, our internal datasets show that Tau pathology in the combined model is moderately increased (see the dataset here) compared to the heterozygous Tau[P301S] model, suggesting that amyloid pathology aggravates Tau hyperphosphorylation and accelerates its progression.
Alzheimer’s disease is pathologically defined by the presence of both amyloid plaques and neurofibrillary tangles. While traditionally used transgenic Alzheimer’s disease mouse models, such as APP[V717I] or APPxPS1, display robust amyloid plaque deposition throughout the brain, they lack the associated plaque-driven tau pathology that is also central to the pathological development and progression of Alzheimer’s disease. Conversely, Tau[P301S] mice develop aggressive Tau pathology, but the P301S mutation in MAPT is linked to frontotemporal dementia (FTD), limiting the model’s standalone translational relevance for Alzheimer’s disease.
Because tau pathology remains largely absent in amyloid-only mouse models, incorporation of mutant human tau is required to recapitulate the dual hallmark pathology of Alzheimer’s disease in vivo.
Reach out to our scientific team to confirm this model’s suitability for your research.
Is the tau pathology observed in InnoSer’s double APPxTau transgenic mouse model driven by amyloid beta plaques?
InnoSer’s internal preliminary data suggest Aβ accelerates the onset of and aggravates tau pathology in the double transgenic APP[V717I]xTau[P301S] mice.
At 13 to 14 months of age, we observe significant increase in hyperhosphorylated tau (AT8 staining) in APP[V717I] x Tau[P301S] transgenic mice compared to heterozygous Tau[P301S] mice, suggesting an interplay between APP / Ab and Tau. The onset of Tau hyperphosphorylation (at 8 months of age) seems accelerated as well.
Quantification of AT8-positive neurons by immunohistochemistry in the cortex demonstrates this increase, with similar patterns observed in other brain regions and additional phospho-tau epitopes (e.g., AT100 in hippocampal CA1 and cortex).
These findings are consistent with literature suggesting that Aβ oligomers accelerate Tau pathology and cognitive impairment (Selkoe and Hardy, 2016; Spires-Jones and Hyman, 2014; Webster et al., 2014), supporting an amyloid-driven enhancement of Tau pathology.
What motor phenotypes are observed in the APP[V717I]xTau[P301S] model?
APP[V717I]xTau[P301S] mice develop progressive motor impairments starting around at 9 months of age, as evidenced by a clasping phenotype and impaired performance during the rotarod task. The clasping phenotype during the motor suspension test is commonly interpreted as a sign of neurodegenerative progression and corticospinal dysfunction.
These motor endpoints provide additional functional readouts of disease severity and can serve as sensitive measures of therapeutic efficacy at later stages.
Reach out to us to obtain the full mouse model phenotyping datasets.
Does the APP[V717I]xTau[P301S] model display cognitive deficits?
Yes, the combined model expressing mutant APP and Tau develops significant impairments in spatial learning and memory, including deficits in the Morris water maze from approximately 6.5 months of age.
The cognitive decline correlates with progressive accumulation of phosphorylated Tau and amyloid pathology, supporting the functional relevance of dual pathology.
However, as with all rodent models, mice do not recapitulate the full complexity of human cognition, social behavior, or clinical symptomatology. The model should therefore be interpreted as a mechanistic and translational efficacy platform rather than a complete replication of human Alzheimer’s disease.
Reach out to us to obtain the full mouse model phenotyping datasets.
Is InnoSer’s double transgenic APP[V717I]xTau[P301S] mouse model readily available for preclinical efficacy studies?
Yes, as an expert preclinical neurodegeneration CRO, InnoSer maintains access to established breeding cohorts of the double transgenic APP[V717I]xTau[P301S] mouse model, enabling rapid study initiation depending on the required animal age and genotype.
Our proactive colony planning ensures that your preclinical efficacy studies can be launched with minimal lead time.
Types de modèles de la maladie d'Alzheimer proposés par InnoSer

Modèles murins transgéniques à protéine amyloïde (APP/AB)
InnoSer propose des services de recherche préclinique utilisant plusieurs modèles transgéniques d'amyloïde différents, qui reproduisent la pathologie des plaques caractéristique de la maladie d'Alzheimer.

Modèles murins transgéniques exprimant la protéine Tau
InnoSer propose des services de recherche uniques, s'appuyant sur plusieurs modèles transgéniques de la protéine tau, qui reproduisent la pathologie des enchevêtrements neurofibrillaires de la protéine tau caractéristique de la maladie d'Alzheimer.

Modèles murins de formation et de propagation de la protéine tau
InnoSer utilise un modèle d'injection d'extrait cérébral lié à la maladie d'Alzheimer, offrant ainsi des services précliniques uniques grâce à un modèle translationnel de l'amorçage et de la propagation de la pathologie tau.

Tests neurologiques in vitro
Évaluez vos composés candidats principaux à l'aide de les pour passer en toute confiance aux études précliniques in vivo
Modèles murins de la maladie d'Alzheimer proposés par InnoSer

Modèle murin transgénique PS19
Tirez parti de l'un des modèles murins les plus couramment utilisés dans la recherche préclinique pour évaluer l'efficacité de votre composé ciblant la pathologie de la protéine tau
![Modèle murin APP[V717I]](https://www.innoserlaboratories.com/wp-content/uploads/2026/05/APPV717I-mouse-model.png)
Modèle murin APP[V717I]

Modèle murin Tau[P301S]
Tirez parti du modèle murin Tau[P301S] exclusif d’InnoSer, caractérisé par une pathologie Tau reproductible et agressive, pour mener des études d’efficacité précliniques rapides et axées sur la prise de décision.
![Modèle murin APP[V717I] x PS1[A246E]](https://www.innoserlaboratories.com/wp-content/uploads/2026/05/APPV717I-x-PS1A246E-mouse-model.png)
Modèle murin APP[V717I] x PS1[A246E]
Évaluer l'efficacité de traitements ciblant l'accumulation de bêta-amyloïde, la neuroinflammation et les troubles cognitifs dans un modèle transgénique APPxPS1 de la maladie d'Alzheimer à apparition précoce
![Modèle murin Tau[P301L]](https://www.innoserlaboratories.com/wp-content/uploads/2026/05/TauP301L-Mouse-Model.png)
Modèle murin Tau[P301L]
Tirer parti du modèle murin Tau[P301L] d’InnoSer, présentant une pathologie Tau progressive et bien caractérisée, pour mener des études d’efficacité précliniques axées sur les mécanismes d’action

Modèle murin transgénique APP x PS1 ARTE10
Faites progresser votre programme thérapeutique visant à réduire les niveaux d'amyloïde en tirant parti de la pathologie généralisée liée à la bêta-amyloïde du modèle murin ARTE10 pour mener des études précliniques d'efficacité rigoureuses.
![Modèle murin APP[V717I] x Tau[P301S], spécialistes européens en neurologie (CRO)](https://www.innoserlaboratories.com/wp-content/uploads/2026/05/APPV717I-x-TauP301S-mouse-model.png)
Modèle murin APP[V717I] x Tau[P301S]
Eévaluer des traitements multi-cibles chez InnoSer combinaison APPxTau maladie d’InnoSer
Découvrez les dernières recherches d'InnoSer
Accréditation AAALAC
InnoSer a obtenu l'accréditation AAALAC, ce qui témoigne de notre engagement en faveur d'une prise en charge et d'une utilisation responsables des animaux. AAALAC International est une organisation à but non lucratif qui promeut le traitement sans cruauté des animaux dans le domaine scientifique par le biais de programmes volontaires d'accréditation et d'évaluation. Les sites d'InnoSer aux Pays-Bas et en Belgique sont accrédités par l'AAALAC depuis 2016 et 2020, respectivement. Pour en savoir plus sur le programme d'accréditation de l'AAALAC, cliquez ici.
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Bien-être animal
Les « 3R » ont une incidence sur tous les domaines, depuis les changements politiques et réglementaires jusqu’au développement et à l’adoption de nouvelles technologies et approches. C’est pourquoi InnoSer s’engage en permanence à suivre ces processus. Les mesures que nous mettons en œuvre optimisent notre capacité à remplacer, réduire et perfectionner l’utilisation des animaux et facilitent notre engagement envers ces principes dans le cadre de la recherche et du développement de médicaments.
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Liens rapides
![Neurosciences translationnelles : profilage longitudinal complet des souris femelles et mâles porteurs de la mutation Tau[P301S]](https://www.innoserlaboratories.com/wp-content/uploads/2026/06/Female-TauP301S-mice-show-early-spontaneous-hyperactivity-in-automated-home-cages-PhenoTyperTM-229375_1080x323.png)

![Modèle murin Tau[P301S] dont la sensibilité au composé a été démontrée, destiné à la validation préclinique du concept](https://www.innoserlaboratories.com/wp-content/uploads/2026/03/Proven-Compound-susceptible-TauP301S-mouse-model-for-preclinical-proof-of-concept--1080x675.png)
