Allele Symbol: Sphk2tm1.1Cgh
Name: targeted mutation 1.1, Shaun R Coughlin
Alteration at locus: Knockout
Gene Symbol: Sphk2
Name: sphingosine kinase 2
Alteration at locus: Knockout
ES Cell Line: RF8 derived from B6;129S
Homozygous phenotype: No aberrant abnormalities, decreased phosphorylation of the drug FTY720.
Heterozygous phenotype: no phenotype
Strain of Origin: 50% 129SVJ: 50% C57BL/6
Strain genetic background:
Founder mice 50% 129SVJ: 50% C57BL/6. Sib-matings generated the current mixed 129SVJ/C57BL/6 line. The percentage contribution of each genetic background in the current mice that are being deposited is unknown.
Strain Development: An FRT-flanked neo cassette with a single 3' loxP site was inserted between exons 1 and 2 and an additional loxP site was inserted downstream of exon 5. The neo cassette was subsequently removed through flp mediated recombination. In vivo Cre-mediated recombination removed exons 2 through 5 creating a null allele. The loss of transcript was confirmed by RT-PCR.
Suggested Control Mice: Wild-type littermates
Donor: Shaun Coughlin, M.D., Ph.D., University of California San Francisco
Pappu R, Schwab SR, Cornelissen I, Pereira JP, Regard JB, Xu Y, Camerer E, Zheng YW, Huang Y, Cyster JG, Coughlin SR. Promotion of lymphocyte egress into blood and lymph by distinct sources of sphingosine-1-phosphate. Science. 2007 Apr 13;316(5822):295-8. Epub 2007 Mar 15. (Medline PMID: 17363629)
Limited quantities of breeder mice (recovered litter) are available from a cryoarchive; recovered litter usually available to ship in 3 to 4 months.
Fee/unit (US $)
|Litter||Recovered litter1; additional fees for any special requests.|
|Aliquot||Approximate quantity3: 20-40 embryos / aliquot|
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 vials and based on the transfer success rate of the MMRRC facility) to transfer to at least two recipients. The MMRRC makes no guarantee concerning embryo transfer success experienced in the recipient investigator's laboratory. Neither gender nor genotype ratios are guaranteed.
To request material from the MMRRC: Please fill out our on-line request form (accessible from the catalog search results page, or click the Request this Strain button in the fees section). If you have questions or need assistance completing this form, you may call Customer Service at (800) 910-2291 (in USA or Canada) or (530) 757-5710 (international calls). Before you call, please have with you: the MMRRC item number, quantity needed, Bill-to and Ship-to contact information.