Phenotype Homozygous phenotype: Not evaluated
Hemizygous phenotype: Double transgenic mice are viable and fertile. At 6 months of age, double-transgenic mice show visible amyloid plaque deposition but are indistinguishable from nontransgenic animals in all cognitive measures. By 18 months, amyloid deposits were much higher in APPswe/PS1dE9 mice with statistically significant but mild decreases in cholinergic markers (cortex and hippocampus) and somatostatin levels (cortex). Performance of older double-transgenic mice is impaired in all cognitive tasks, and deficits in episodic-like memory tasks correlate with total amyloid-beta peptide loads in the brain. Mutant mice, hemizygous for each transgene, and on the C57BL/6J background (N6), have altered EEG (decreased cortical theta activity and increased beta and gamma activity). EEG differences are detected as early as 7 month of age (Wang et al. Brain Res 2002).
Mammalian Phenotype Terms:(provided by MGI)Extend all MPTs assigned by genotype
Tg(PSEN1dE9)S9Dbo/-
B6.Cg-Tg(APP695)3Dbo Tg(PSEN1dE9)S9Dbo/Mmjax
The following phenotype information may relate to one or more alleles on a genetic background differing from this MMRRC strain.
Tg(PSEN1dE9)S9Dbo/-
Background Not Specified
nervous system phenotype
abnormal amacrine cell morphology (MGI Ref ID J:139070)
distribution of amacrine cell processes is disrupted as determined by syntaxin 1 staining
abnormal microglial cell morphology (MGI Ref ID J:139070)
increase in microglial cell activity in retina is observed in 12-15 month old transgenics
microglia processes in the retina are thicker and display a dendritic-like appearance as compared to control
microglia density, but not cell body size, is increased in transgenics
mice travel shorter distance in open-field and show less activity or excursions into central area; mice remain near periphery of apparatus rather than entering open center of field
abnormal spatial reference memory (MGI Ref ID J:123534)
16-18 month-old mice swim farther to find platform and spend less time in platform vicinity than controls
one month following neuron injection with virus expressing short hairpin RNA to silence Bace1, there is a 38% reduction in amyloid beta burden in hippocampus compared to uninjected hippocampus
one month following neuron injection with virus expressing short hairpin RNA to silence Bace1, there is a 38% reduction in amyloid beta burden in hippocampus compared to uninjected hippocampus
at 7 months of age, mice exhibit amyloid plaques in the hippocampus and cortex (MGI Ref ID J:104236)
develops diffuse, compact, birefringent congophilic plaques in cortex and hippocampus (MGI Ref ID J:87691)
ratio of amyloid beta peptide 40:42 is 0.75:1 (MGI Ref ID J:87691)
150% increase in amyloid beta peptide 42 (MGI Ref ID J:87691)
Founder genetic background: C3B6
Strain genetic background: B6.Cg
Strain Development: Mutant amyloid precursor protein (APPswe) transgenic mice (line C3-3) express a chimeric mouse/human APP-695 with mutations linked to familial Alzheimers disease (KM 593/594 NL). The C3-3 line was backcrossed to C57BL/6J mice for 10 generations. Presenilin 1 (PSEN1) transgenic mice (line S-9) express human PSEN1 carrying the exon-9-deleted variant (PSEN1dE9) associated with familial Alzheimer's disease. Originally created on a hybrid strain background (C3H/HeJ;C57BL/6J), the S-9 line was backcrossed to C57BL/6J for six generations. Both are under the control of the mouse prion protein (PrP) promoter, directing transgene expression predominantly to CNS neurons. APPswe/PS1dE9 double transgenic mice were produced by mating APP-695 line C3-3 males to PS1dE9 line S-9 females, and then backcrossing double transgenic males to C57BL/6J mice for >10 generations before arriving at The Repository.
Suggested Control Mice: Wild-ype littermates
Research Applications
Models for Human Disease
Neurobiology
Strain Origin
Donor:
David Borchelt, Ph.D., McKnight Brain Institute, University of Florida
Primary Reference:
Savonenko A; Xu GM; Melnikova T; Morton JL; Gonzales V; Wong MP; Price DL; Tang F; Markowska AL; Borchelt DR, Episodic-like memory deficits in the APPswe/PS1dE9 mouse model of Alzheimer's disease: relationships to beta-amyloid deposition and neurotransmitter abnormalities., Neurobiol Dis 2005 Apr;18(3):602-17
(Medline PMID: 15755686)
Jankowsky JL; Fadale DJ; Anderson J; Xu GM; Gonzales V; Jenkins NA; Copeland NG; Lee MK; Younkin LH; Wagner SL; Younkin SG; Borchelt DR, Mutant presenilins specifically elevate the levels of the 42 residue beta-amyloid peptide in vivo: evidence for augmentation of a 42-specific gamma secretase., Hum Mol Genet 2004 Jan 15;13(2):159-70
(Medline PMID: 14645205 )
Borchelt DR; Davis J; Fischer M; Lee MK; Slunt HH; Ratovitsky T; Regard J; Copeland NG; Jenkins NA; Sisodia SS; Price DL, A vector for expressing foreign genes in the brains and hearts of transgenic mice., Genet Anal 1996 Dec;13(6):159-63
(Medline PMID: 9117892)
Jankowsky JL; Slunt HH; Ratovitski T; Jenkins NA; Copeland NG; Borchelt DR, Co-expression of multiple transgenes in mouse CNS: a comparison of strategies., Biomol Eng 2001 Jun;17(6):157-65
(Medline PMID: 11337275)
Special Considerations
When maintaining a live colony, The Jackson Laboratory will maintain this line by mating (APP695/0, +/+) females with (+/+, PSEN1/0) males (or reciprocal). The transgenes are not linked (only 1 in 4 pups is a double transgenic); and the integration site is unknown.
For more information about this colony's health status contact csmmrrc@jax.org
Order Request Information
Availability Level:
Limited quantities of breeder mice (up to 2 males and 2 females or 4 mice) per investigator per month are available from a live colony, usually available to ship in under 12 weeks. Larger quantities may be available, please contact the distributing center directly at csmmrrc@jax.org for more details.
Conditions of Distribution:
Distribution of this strain requires submission of the MMRRC Conditions of Use (COU).
A link to the COU web form will be provided via email after an order has been placed; the form should be completed then or the email forwarded
to your institutional official for completion.
The donor or their institution limits the distribution to non-profit institutions only.
Fees:
Additional charges may apply for any special requests. Shipping
costs are in addition to the basic distribution/resuscitation
fees. Information on shipping costs and any additional charges will be provided
by the supplying MMRRC facility.
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(Use the MMRRC Catalog Search to request more than one strain.)
The csmmrrc@jax.org may assess additional fees for any special requests (e.g., specific age or weight of mice, etc.).
1
The distribution fee covers the expense of resuscitating mice from the cryo-archive; you will receive the resulting litter. The litter will contain at minimum one mutant carrier; the actual number of animals and the gender and genotype ratios will vary. (Typically, multiple breeder pairs can be established from the recovered litter.) Prior to shipment, the MMRRC will provide information about the animals recovered. If you anticipate or find that you need to request specific genotypes, genders or quantities of mice in excess of what is likely from a resuscitated litter, you may discuss available options and pricing with the supplying MMRRC facility.
2
An aliquot is one straw or vial with sufficient sperm to recover at least one litter of mice, as per provided protocols, when performed at the MMRRC facility. The MMRRC makes no guarantee concerning the success of these procedures when performed outside the MMRRC facilities.
3
An aliquot contains a sufficient number of embryos (in one or more
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embryo transfer success experienced in the recipient investigator's laboratory.
Neither gender nor genotype ratios are guaranteed.
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The MMRRC is a collaborative effort, funded by grants from the
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