Strain Name:
129S1.Cg-Sirt1tm3.1Mcby/Mmjax
Stock Number:
043520-JAX
Citation ID:
RRID:MMRRC_043520-JAX
Other Names:
Sirt1ER/ER, Sirt1ER

Strain Information

Sirt1tm3.1Mcby
Name: sirtuin 1; targeted mutation 3.1,Michael W McBurney
Synonyms: sirt1ER
Type: Allele
Species: Mus musculus (mouse)
Chromosome:
Alteration at locus: Knock-In
Sirt1
Name: sirtuin 1
Synonyms: Sir2, Sir2alpha
Type: Gene
Species: Mouse
Chromosome: 10
Alteration at locus: Knock-In
NCBI: 93759
Homologene: 56556
Genetic Alterations
The donor used homologous recombination in the R1 embryonic stem cell line to modify the Sirt1 gene. A knock-in vector was constructed that replaced all but the 130 bases of the 1.8-kb 3’UTR of the Sirt1 transcript with a region encoding the hormone-binding domain of the mouse estrogen receptor alpha (ERα) containing a point mutation (G525R) that confers selective binding to 4-hydroxy-tamoxifen (4OHT). This 4OHT-binding domain (referred to hereafter as ER), derived from codons 281 to 599 of the mouse ERα, was fused in-frame to the C-terminal end of the Sirt1 coding region. The result is that the level of Sirt1-ER protein and activity can be reversibly modulated.
ES Cell Line
R1
Phenotype

Homozygous: Sirt1ER mice have some mild craniofacial differences (ocular hypotelorism and shortened snout), males are subfertile, and exhibit some lymphocytic infiltration in the salivary and lacrimal glands.

Hetero/Hemizygous: Same as wild-type.

Cre-excised Phenotype: Undetermined.

Mammalian Phenotype Terms
Allelic Composition: (Genetic Background: )

Strain Development
Sirt1+/ER embryonic stem cells were aggregated with morulae from CD1 mice. After culture to the blastocyst stage, blastocysts were transferred to pseudopregnant CD1 females. Chimeras were identified by coat pigmentation. Male chimeras were bred to 129/Sv females. Resulting females carrying the Sirt1ER allele were bred to male mice carrying Cre recombinase under control of the protamine promoter (129S/Sv-Tg(Prm-cre)58Og/J, JAX Strain #003328 - this strain is a "mixed inbred", 129S1;129S4). Resulting males with both the Sirt1ER allele and the prm-Cre transgene were bred to 129S1/SvImJ females. The resulting offspring had deleted pgk-puro that had been inserted downstream of the SirtER allele. Five backcrosses were done into the 129S1/SvImJ background. Sirt1+/ER mice were intercrossed and resulting homozygous Sirt1ER/ER mice were maintained by brother-sister crosses.
Suggested Control Mice
Wild-type littermates
MMRRC Genetic QC Summary
The MMRRC Centers have developed a genetic QC pipeline using MiniMUGA array genotyping to provide additional information on strain backgrounds for MMRRC congenic and inbred strains. For more information on when data may be available, or to request genotyping for a strain of interest, please contact csmmrrc@jax.org. Older strains may not have this information.
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Donor
Michael McBurney, Ph.D., Ottawa Hospital Research Institute.

Colony and Husbandry Information

Cryo-recovered strains distributed by the MMRRC at JAX are shipped to the customer from the Pathogen & Opportunistic-Free Animal Room G200 - see https://www.jax.org/jax-mice-and-services/customer-support/customer-service/animal-health/health-status-reports.

Mice recovered from a cryo-archive will have health surveillance performed on recipient females. Health reports will be provided prior to shipment. If you require additional health status information, please email csmmrrc@jax.org.
Coat Color
Brown
Eye
Black
MMRRC Breeding System
Backcross then sib-mating
Generation
N6 (129S1/SvImJ), F10
Overall Breeding Performance
Good
Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Yes Reduced
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: 8 to 12 months 8 to 12 months
Bred to Homozygosity
No
Average litter size
4-6 pups
Recommended wean age
3 weeks

Order Request Information

Limited quantities of breeder mice (recovered litter) are available from a cryoarchive; recovered litter usually available to ship in 3 to 4 months.

Cryopreserved material may be available upon request, please inquire to csmmrrc@jax.org for more information.

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.

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.

Click button to Request this one strain. (Use the MMRRC Catalog Search to request more than one strain.)
MMRRC Item # Description Distribution Fee / Unit (US $)
*Shipping & Handling not included*
Units Notes
043520-JAX-SPERM Cryo-preserved spermatozoa $437.00 / Non-Profit Aliquot Approximate quantity3
043520-JAX-RESUS Litter recovered from cryo-archive $2,022.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.
Cryopreserved material may be available upon request, please inquire to csmmrrc@jax.org for more information.

1 The distribution fee covers the expense of rederiving mice from a live mouse; 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 contains a sufficient number of embryos (in one or more vials or straws and based on the transfer success rate of the MMRRC facility) to transfer into one to three recipients. The MMRRC makes no guarantee concerning embryo transfer success experienced in the recipient investigator's laboratory. Neither gender nor genotype ratios are guaranteed.

3 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.

4 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.

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.