Strain Name:
C57BL/6J-Rr70em1Rsnk/Mmmh
Stock Number:
065423-MU
Citation ID:
RRID:MMRRC_065423-MU
Other Names:
AS-ICTerm

Strain Information

Rr70em1Rsnk
Name: regulatory region 70; endonuclease-mediated mutation 1, James Resnick
Synonyms: ASTerm
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 7
Alteration at locus: CRISPR
Snrpn
Name: small nuclear ribonucleoprotein N
Synonyms: Pwcr1, Peg4, 2410045I01Rik
Type: Gene
Species: Mouse
Chromosome: 7
Alteration at locus: CRISPR
NCBI: 20646
Homologene: 68297
Genetic Alterations
Insertion of a floxed transcriptional terminator (derived from the rabbit beta-globin gene) 14.3 kb upstream of the major Snurf/Snrpn promoter.
Genotype Determination
Phenotype
Since the mutation disrupts a cluster of imprinted genes, the phenotypes differ depending on the parent-of-origin. Paternal inheritance appears to be neutral without obvious phenotype. Maternal inheritance leads to pups that are small at weaning, catch up to wild-type littermates at about 5-7 weeks, and subsequently become obese. Maternal inheritance is also associated with a reduction in fertility.

Conditional phenotype: The ability to set a maternal imprint is conditional. An imprint will not be set following maternal transmission unless the terminator is removed

Strain Development
CRISPR/Cas9-mediated insertion on the C57BL6/J background
Suggested Control Mice
Wild-type C57BL/6J
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 mmrrc@missouri.edu. Older strains may not have this information.
  • Developmental Biology
  • Obesity
  • Reproduction
Donor
James Resnick, Ph.D., University of Florida.
Primary Reference

Lewis MW, Vargas-Franco D, Morse DA, Resnick JL. A mouse model of Angelmansyndrome imprinting defects. Hum Mol Genet. 2019 Jan 15;28(2):220-229. doi:10.1093/hmg/ddy345. (Medline PMID: 30260400)

Colony and Husbandry Information

The mutation should be maintained exclusively by paternal transmission. Maternal inheritance leads to about 50% loss by weaning. Surviving males are infertile and females are sub-fertile. Maternal inheritance also results in offspring that are small at 3 weeks but obese by 9-10 weeks.

Colony Surveillance Program and Current Health 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 mmrrc@missouri.edu.
Coat Color
Black
Eye
Black
MMRRC Breeding System
Other or uncertain
Generation
N/A
Overall Breeding Performance
Good
Viability and Fertility: Female Male Comments
Homozygotes are viable: Reduced Reduced
Homozygotes are fertile: Reduced No
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: Undetermined Undetermined
Average litter size
Undetermined
Recommended wean age
3 Weeks
Average Pups Weaned
Undetermined

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 mmrrc@missouri.edu 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
065423-MU-RESUS Litter recovered from cryo-archive $2,624.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.
Cryopreserved material may be available upon request, please inquire to mmrrc@missouri.edu 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.