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Strain Name:

C57BL/6-Fastm1Cgn/J

Stock Number:

007895

Availability:

Repository- Live


General Terms and Conditions

Genes & Alleles   Fas;   Fastm1Cgn;


Product Information

Strain Details

Type JAX® GEMM® Strain - Coisogenic
Additional information on JAX® GEMM® Strains.
Type JAX® GEMM® Strain - Mutant Strain
Type JAX® GEMM® Strain - Targeted Mutation
Mating SystemHomozygote x Homozygote         (Female x Male)
Specieslaboratory mouse
Donating Investigator Klaus Rajewsky,   Immune Disease Institute (formerly CBRI)
GenerationF?+N1F1 (07-JUL-08)

Strain Description
Mice homozygous for this "Fasfl" conditional allele are viable and fertile, with loxP sites flanking exon 9 of the targeted gene. When bred to mice that express Cre recombinase, exon 9 (which encodes the death domain) is deleted in the cre-expressing tissues in the resulting offspring.

These Fasfl mice may be useful in generating conditional mutations for studying many aspects of immune function. For example, when Fasfl mice are crossed to a strain expressing Cre recombinase in B lineage cells (see Stock No. 004126 or 006785 ), this mutant mouse strain may be useful in studies of lymphoproliferative disorder. Similarly, when Fasfl mice are crossed to an interferon inducible strain with widespread Cre recombinase expression (see Stock No. 003556, 005673, or 002527), this mutant mouse strain may be useful in studies of lymphoproliferative disease. Further, deletion of Fas in T cells (by crossing Fasfl mice to a CD4-cre transgenic strain) produces mice that develop progressive lymphopenia and inflammatory pulmonary fibrosis which resembles idiopathic pulmonary fibrosis in humans.

Strain Development
A targeting vector was designed to place a loxP-flanked neo cassette downstream, and a third loxP site upstream of exon 9 of the targeted gene. The construct was electroporated into C57BL/6-derived Bruce-4 embryonic stem (ES) cells. Correctly targeted ES cells were transiently transfected with a cre-expressing plasmid to remove the neo selection cassette. Chimeric mice were bred to C57BL/6 mice. The resulting "Fasfl" mice (with a single loxP site just upstream, and a single loxP site just downstream of exon 9) were maintained as homozygotes on the C57BL/6 genetic background prior to arrival at The Jackson Laboratory.

Mammalian Phenotype Terms assigned by genotype

Fastm1Cgn/Fastm1Cgn

        C57BL/6-Fastm1Cgn
  • immune system phenotype
  • *normal* immune system phenotype (MGI Ref ID J:114948)
    • normal lymphocyte development and subset distribution

The following phenotype relates to a compound genotype created using this strain.
Contact JAX® Services jaxservices@jax.org for customized breeding options.

Cd19tm1(cre)Cgn/Cd19+ Fastm1Cgn/Fastm1Cgn

        B6.Cg-Cd19tm1(cre)Cgn Fastm1Cgn   (conditional)
  • immune system phenotype
  • increased anti-single stranded DNA antibody level (MGI Ref ID J:114948)
    • 3- to 8-fold increase in IgM and IgG antibodies for single stranded DNA; however, this is 2- to 3-fold lower than in mice homozygous for Fastm1.1Cgn and mice do not display the increase in double negative T cells or lymphoproliferative disease seen in Faslpr homozygotes

Fastm1Cgn/Fastm1Cgn Tg(Mx1-cre)1Cgn/0

        B6.Cg-Fastm1Cgn Tg(Mx1-cre)1Cgn   (conditional)
  • immune system phenotype
  • abnormal immune system morphology (MGI Ref ID J:114948)
    • after Poly(I) Poly(C) induction of cre expression mice develop the lymphoproliferative disease seen in Fastm1.1Cgn homozygtes
    • enlarged lymph nodes (MGI Ref ID J:114948)
    • enlarged spleen (MGI Ref ID J:114948)
  • hematopoietic system phenotype
  • enlarged spleen (MGI Ref ID J:114948)

Gene & Allele Details

Allele Symbol Fastm1Cgn
Allele Name targeted mutation 1, University of Cologne
Common Name(s) fasfl;
Mutation Made By Klaus Rajewsky,   Immune Disease Institute (formerly CBRI)
Strain of OriginC57BL/6
ES Cell Line NameBruce 4
ES Cell Line StrainC57BL/6
Gene Symbol and Name Fas, Fas (TNF receptor superfamily member 6)
Chromosome 19
Gene Common Name(s) AI196731; ALPS1A; APO-1; APT1; CD95; FAS1; FASTM; Fas antigen; TNFR6; TNFRSF6; Tnfrsf6; expressed sequence AI196731; lpr; lymphoproliferation; tumor necrosis factor receptor superfamily, member 6;
Molecular Note Exon 9, the death domain encoding exon, was flanked by loxP sites via homologous recombination. [MGI Ref ID J:114948]

Control Information

  Control
   000664 C57BL/6J
 
  Considerations for Choosing Controls

Genotyping Protocols

Fastm1Cgn

Colony Maintenance

Breeding & HusbandryWhen maintaining a live colony, homozygous mice may be bred together.
Diet Information LabDiet® 5K52/5K67

Related Strains

Strains carrying other alleles of Fas
003233   B6.129P2-Fastm1Osa/J
000482   B6.MRL-Faslpr/J
000480   C3.MRL-Faslpr/J
001876   CBA/KlJms-Faslpr-cg/J
002455   MRL-Faslpr.129P2(B6)-B2mtm1Unc
003234   MRL.129P2(B6)-Fastm1Osa/J
002983   MRL.CBAJms-Faslpr-cg/J
003896   MRL/MpJ Faslpr-Foxq1sa-J/J
006825   MRL/MpJ-Faslpr/2J
000485   MRL/MpJ-Faslpr/J
004519   NOD.MRL(C3)-Faslpr/DoiJ
004922   NOD.MRL-Faslpr/Dvs
View Strains carrying other alleles of Fas     (12 strains)

Additional Web Information

Cre-lox or FLP-FRT Systems

Animal Health Reports

Room Number           AX11

Research Applications

This mouse can be used to support research in many areas including:

Cell Biology Research
Genes Regulating Growth and Proliferation

Research Tools
Cell Biology Research
Cre-lox System (loxP-flanked Sequences)
Hematological Research
Immunology and Inflammation Research

References

Selected Reference(s)

Hao Z; Hampel B; Yagita H; Rajewsky K. 2004. T cell-specific ablation of Fas leads to Fas ligand-mediated lymphocyte depletion and inflammatory pulmonary fibrosis. J Exp Med 199(10):1355-65. [PubMed: 15148335]  [MGI Ref ID J:114948]

Additional References

Price and Supply Information

Strain Name: C57BL/6-Fastm1Cgn/J
Stock Number: 007895

Price Details

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Supply Details

Standard SupplyRepository-Live. A collection of over 1000 strains maintained as live colonies. Individual colonies are sized to meet current customer demand. Delivery for orders of 10 mice or less ranges on average from one to eight weeks; mice are generally shipped between four to six weeks of age with a maximum shipping age of ~nine weeks. Colony sizes do not generally support stringent age specifications for large volumes of mice; however custom orders and larger quantities of mice are easily arranged. Estimated ship dates for all orders provided within 48 hours of order placement.
Supply Notes Usually shipped between four and eight weeks of age.
This strain is included in the Induced Mutant Resource Colony collection.
LicensingSee General Terms and Conditions below for Licensing and Use Restrictions  
Control InformationView Control Information in Strain Details.

General Terms and Conditions

View JAX® Mice & Services Conditions of Use.

Effective September 26, 2007: License Requirements for Strains using Cre-lox Technology only apply in Canada, see Licenses for Strains using Cre-lox Technology.

For additional Licensing and Use Restrictions view the link(s) below:
- Notice Regarding cre/Esr1 (Tamoxifen Inducible Cre) Strains.
- Use of MICE by companies or for-profit entities requires a license prior to shipping.

The Jackson Laboratory's Genotype Promise

The Jackson Laboratory has rigorous genetic quality control and mutant gene genotyping programs to ensure the genetic background of JAX® Mice strains as well as the genotypes of strains with identified molecular mutations. JAX® Mice strains are only made available to researchers after meeting our standards. However, the phenotype of each strain may not be fully characterized and/or captured in the strain data sheets. Therefore, we cannot guarantee a strain's phenotype will meet all expectations. To ensure that JAX® Mice will meet the needs of individual research projects or when requesting a strain that is new to your research, we suggest ordering and performing tests on a small number of mice to determine suitability for your particular project.
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