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Strain Name:

B6.Cg-Sfpi1tm2Dgt/J

Stock Number:

006922

Availability:

Repository- Live


General Terms and Conditions

Genes & Alleles   Sfpi1;   Sfpi1tm2Dgt;


Product Information

Strain Details

Type JAX® GEMM® Strain - Congenic
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 Daniel Tenen,   Beth Israel Deaconess Medical Center
GenerationN9+F1 (19-MAY-08)

Strain Description
Mice that are homozygous for this "PU.1F" conditional allele are viable and fertile. When PU.1F mice are bred to mice expressing Cre recombinase, exons 4-5 of the targeted gene are deleted in the cre-expressing tissues in the offspring. These mice may be useful in studying T cell lymphoma, AML and other cancers, as well as transcription factors, hematopoiesis, and the development of multiple cell lineages.

For example, when PU.1F mice are crossed with mice expressing the interferon- or dsRNA-inducible Mx1-cre transgenic mice (see Stock No. 003556), this mutant mouse strain may be useful in studies of hematopoietic stem cells.

Strain Development
A targeting vector was designed to insert loxp sites flanking exons 4-5 of the endogenous mouse PU.1 (or Sfpi1) gene, as well as a loxp-flanked PGK-neo cassette downstream of exon 5. This construct was electroporated into 129-derived embryonic stem (ES) cells. Correctly targeted ES cells were injected into C57BL/6 blastocysts, and the resulting chimeric males were bred to C57BL/6 females. These PU.1F mice were then backcrossed to C57BL/6 for at least 5 generations. At some point, these mice were bred with Mx1-Cre transgenic mice (congenic (N9) on a C57BL/6 background) and double mutant mice were subsequently sent to The Jackson Laboratory. Upon arrival, mice were selected for the PU.1F targeted mutation and (against the Mx1-Cre transgene) to establish this strain.

Mammalian Phenotype Terms assigned by genotype

Sfpi1tm2Dgt/Sfpi1tm2Dgt

        B6.Cg-Sfpi1tm2Dgt
  • hematopoietic system phenotype
  • abnormal blood cell morphology/development (MGI Ref ID J:114150)
    • purified GMPs from homozygous mice transfected with retroviral transduction of cre form only colonies composed of myeloblasts
    • cultured CMPs form megakaryocyte/erythroid colonies as well as myeloblast colonies that appear to replace GM-related colonies that form when normal CMPs are cultured

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+ Sfpi1tm2Dgt/Sfpi1tm2Dgt

        involves: 129P2/OlaHsd * C57BL/6   (conditional)
  • hematopoietic system phenotype
  • *normal* hematopoietic system phenotype (MGI Ref ID J:114150)
    • mice have normal numbers of pre-B cells and mature B cells in the bone marrow
    • B cells from the spleen show significant proliferative responses to mitogenic agents

Sfpi1tm2Dgt/Sfpi1tm2Dgt Tg(Mx1-cre)1Cgn/0

        involves: 129P2/OlaHsd * C57BL/6 * CBA   (conditional)
  • hematopoietic system phenotype
  • abnormal blood cell morphology/development (MGI Ref ID J:114150)
    • 2-3 weeks after induction of cre expression with pI-pC, number of HSCs in bone marrow is decreased with loss of CMPs, GMPs and mature myeloid cells while MEPs are increased
    • by 6 weeks, numbers of CLPs, CMPs, and GMPs begin to recover

Gene & Allele Details

Allele Symbol Sfpi1tm2Dgt
Allele Name targeted mutation 2, Daniel G Tenen
Common Name(s) PU.1F;
Mutation Made By Daniel Tenen,   Beth Israel Deaconess Medical Center
Gene Symbol and Name Sfpi1, SFFV proviral integration 1
Chromosome 2
Gene Common Name(s) Dis-1; OF; PU.1; SPI-1; SPI-A; Sfpi-1; Tcfpu1; Tfpu.1; transcription factor PU.1;
Molecular Note LoxP sites were inserted in intron 3 and a loxP-flanked neomycin selection cassette was inserted into intron 5. [MGI Ref ID J:114150]

Control Information

  Control
   000664 C57BL/6J
 
  Considerations for Choosing Controls

Genotyping Protocols

Generic Cre
Sfpi1tm2Dgt

Colony Maintenance

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

Related Strains

Strains carrying other alleles of Sfpi1
006099   B6;129-Sfpi1tm1.2Dgt/J
006147   B6;FVB-Tg(Sfpi1,-EGFP)7Dgt/J
006083   STOCK Sfpi1tm1.3Dgt/J
View Strains carrying other alleles of Sfpi1     (3 strains)

Additional Web Information

Congenic Nomenclature
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:

Cancer Research
Genes Regulating Growth and Proliferation
Increased Tumor Incidence (Leukemia)

Developmental Biology Research
Internal/Organ Defects (Lymphoid Tissue Defects)
Internal/Organ Defects (hematopoietic defects)

Hematological Research
Hematopoietic Defects

Immunology and Inflammation Research
Lymphoid Tissue Defects (hematopoietic development)

Internal/Organ Research
Lymphoid Tissue Defects

Research Tools
Cancer Research (Leukemia)
Cancer Research (tumor immunology)
Cre-lox System (loxP-flanked Sequences)
Hematological Research
Immunology and Inflammation Research

References

Selected Reference(s)

Iwasaki H; Somoza C; Shigematsu H; Duprez EA; Iwasaki-Arai J; Mizuno S; Arinobu Y; Geary K; Zhang P; Dayaram T; Fenyus ML; Elf S; Chan S; Kastner P; Huettner CS; Murray R; Tenen DG; Akashi K. 2005. Distinctive and indispensable roles of PU.1 in maintenance of hematopoietic stem cells and their differentiation. Blood 106(5):1590-600. [PubMed: 15914556]  [MGI Ref ID J:114150]

Additional References

Price and Supply Information

Strain Name: B6.Cg-Sfpi1tm2Dgt/J
Stock Number: 006922

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:
- 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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