Strain Name:
C57BL/6J-Cbx2em1Rek/Mmjax
Stock Number:
046322-JAX
Citation ID:
RRID:MMRRC_046322-JAX
Other Names:
Cbx2[13KRA]

Strain Information

Cbx2em1Rek
Name: chromobox 2; endonuclease-mediated mutation 1, Robert E Kingston
Synonyms: Cbx213KRA
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 11
Alteration at locus: CRISPR
Cbx2
Name: chromobox 2
Synonyms: M33
Type: Gene
Species: Mouse
Chromosome: 11
Alteration at locus: CRISPR
NCBI: 12416
HGNC: HGNC:1552
Homologene: 7256
Genetic Alterations

Thirteen lysines and arginines between amino acid position 132 and 240 of the Cbx2 gene were replaced with alanines using CRISPR/Cas9-mediated homologous recombination. A related strain is MMRRC:50534.

Genotype Determination
Phenotype
Anterior-to-posterior homeotic transformation of axial skeleton. Homozygotes viable and fertile.
MeSH Terms
  • Animals
  • Body Patterning/genetics
  • Cell Line
  • Gene Expression Regulation, Developmental
  • Gene Silencing
  • Genes, Homeobox
  • Mice
  • Mice, Mutant Strains
  • Mutation
  • Nucleosomes/genetics
  • Nucleosomes/metabolism
  • Polycomb Repressive Complex 1/genetics
  • Polycomb Repressive Complex 1/metabolism
  • Protein Binding
  • Skeleton/growth & development
Strain Development
CRISPR/Cas9-mediated homologous recombination in C57BL/6 zygotes followed by 8 backcrosses to C57BL/6J. More specifically, the single-guide RNA (sgRNAs) pair, Cas9 nickase mRNA, and plasmid donor for homologous recombination were injected into mouse zygotes (C57BL/6 inbred strain) by the Genome Modification Facility at Harvard University. Mice born from the injected zygotes were screened for homologous recombination events via PCR-RFLP (restriction fragment length polymorphism). Based on these results, three mice were identified to have homologous recombination events in their genomes and designated as founders. Exon 5 of the Cbx2 gene from these animals were cloned, sequenced, and characterized in detail (e.g., to identify small internal insertions or deletions that could not be detected by PCR-RFLP). The founders were crossed to C57BL/6J mice to test for germline transmission. Cbx213KRA/+ progeny were intercrossed to produce animals for experimentation. Animals from subsequent generations were genotyped using the melt curve analysis approach.
Suggested Control Mice
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 csmmrrc@jax.org. Older strains may not have this information.
  • Developmental Biology
Donor
Robert Kingston, Ph.D Massachusetts General Hospital
Primary Reference

Lau MS, Schwartz MG, Kundu S, Savol AJ, Wang PI, Marr SK, Grau DJ, Schorderet P, Sadreyev RI, Tabin CJ, Kingston RE. Mutation of a nucleosome compaction regiondisrupts Polycomb-mediated axial patterning. Science. 2017 Mar10;355(6329):1081-1084. doi: 10.1126/science.aah5403. Epub 2017 Mar 9. (Medline PMID: 28280206)

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
Black
Eye
Black
MMRRC Breeding System
Backcross
Generation
N8
Overall Breeding Performance
Good
Average litter size
4-6
Recommended wean age
3 Weeks
Average Pups Weaned
4-6

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
046322-JAX-SPERM Cryo-preserved spermatozoa $437.00 / Non-Profit Aliquot Approximate quantity3
046322-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.