Strain Name:
C57BL/6N-Col1a2tm1b(EUCOMM)Wtsi/LaelMmnc
Stock Number:
066964-UNC
Citation ID:
RRID:MMRRC_066964-UNC
Other Names:
Tm1b Col1a2 null

Strain Information

Col1a2tm1b(EUCOMM)Wtsi
Name: collagen, type I, alpha 2; targeted mutation 1b, Wellcome Trust Sanger Institute
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 6
Alteration at locus: Knockout
Col1a2
Name: collagen, type I, alpha 2
Synonyms: Col1a-2, Cola2, Cola-2
Type: Gene
Species: Mouse
Chromosome: 6
Alteration at locus: Knockout
NCBI: 12843
HGNC: HGNC:2198
Homologene: 69
Genetic Alterations

Cre-mediated excision of the parental Col1a2tm1a(EUCOMM)Wtsi allele resulted in the removal of the promoter-driven neomycin selection cassette and critical exon(s) leaving behind the inserted lacZ reporter sequence.

Genotype Determination
  • Genotyping Protocol(s)
  • Center protocol and contact for technical support will be shipped with mice.
  • ES Cell Line
    JM8A3.N1
    Phenotype
    Homozygous males can display swollen hind ankles and/or footpads. The incidence does not appear to be determined by age and has rarely been noted in females. The gait of homozygous and heterozygous males can appear mildly abnormal, primarily in the hips and hind legs. Around 50% of homozygous male mice between 6 and 12 months of age seem to deteriorate quickly with a loss of coat condition and irregular breathing.

    See IMPC data at https://www.mousephenotype.org/data/genes/MGI:88468
    MeSH Terms
    • Alleles
    • Animals
    • Computational Biology
    • Embryonic Stem Cells/cytology
    • Embryonic Stem Cells/metabolism
    • Gene Deletion
    • Gene Knockout Techniques/methods
    • Genes/genetics
    • Genes, Lethal/genetics
    • Genetic Association Studies/methods
    • Genetic Vectors/genetics
    • Genome/genetics
    • Genomics
    • Genotype
    • Humans
    • Mice
    • Mice, Inbred C57BL
    • Mice, Knockout/genetics
    • Mutagenesis, Insertional/methods
    • Phenotype
    • Polymerase Chain Reaction
    • Rats
    Strain Development

    The tm1b allele was generated from tm1a purchased from the MMRRC, UC Davis. An IVF Cre procedure was carried out at MRC Harwell. The line was maintained on pure C57BL/6N background via sib-mating. However, none-siblings - commonly, heterozygotes from another litter - were used on occasion.

    Suggested Control Mice
    C57BL/6N
    MMRRC Genetic QC Summary
    Genetic QC analysis (GQC) was performed on representative samples from the donor submission and provides a baseline reference. Regardless of the material ordered (live mice, sperm, embryos, resuscitated animals), the provided material is guaranteed to contain the primary genetic alteration of interest; however, the composition of the genetic background may vary (See Reproducibility sections of the report for details). The impact of genetic background on previously reported phenotypes has not been evaluated.

    GQC analysis was done on two XY samples, AA6555 and SN3483 , at the time of importation and the conclusions are consistent in all samples. The results of the analysis are congruent with the SDS and SN3483 is the representative sample selected for the report. The strain background is C57BL/6N. The mitochondrial genome and Y chromosome are consistent with the C57BL/6N background. The strain is 100 % inbred. The following construct(s) are detected in all samples: IRES
    MiniMUGA Sample Report
    • Cancer
    • Cardiovascular
    • Cell Biology
    • Dermatology
    • Developmental Biology
    • Endocrine Deficiency
    • Hematology
    • Internal/Organ
    • Metabolism
    • Models for Human Disease
    • Obesity
    • Sensorineural
    Donor
    Elizabeth Laird, Ph.D., University of Liverpool.
    Primary Reference

    Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V, Mujica AO,Thomas M, Harrow J, Cox T, Jackson D, Severin J, Biggs P, Fu J, Nefedov M, deJong PJ, Stewart AF, Bradley A. A conditional knockout resource for thegenome-wide study of mouse gene function. Nature. 2011 Jun 15;474(7351):337-42.doi: 10.1038/nature10163. (Medline PMID: 21677750)

    Colony and Husbandry Information

    Tunnels for handling and health monitoring were used as a standard in the donor's vivarium. Extra checks and health monitoring were carried out on homozygous and heterozygous males for signs of swollen ankles and footpads, or for age-related deterioration. Males were also monitored for fighting as this could induce swollen ankles.

    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_health@med.unc.edu.
    Coat Color
    Black
    Eye
    Black
    MMRRC Breeding System
    Random intra-strain mating
    Generation
    No backcrossing, maintained as C57BL/6N.
    Overall Breeding Performance
    Good
    Viability and Fertility: Female Male Comments
    Homozygotes are viable: Yes Yes
    Homozygotes are fertile: Undetermined Yes
    Heterozygotes are fertile: Yes Yes
    Age Reproductive Decline: 4 to 6 months 4 to 6 months
    Bred to Homozygosity
    Yes
    Average litter size
    4 to 6
    Recommended wean age
    3 Weeks
    Average Pups Weaned
    4 to 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 mmrrc@med.unc.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
    066964-UNC-SPERM Cryo-preserved spermatozoa $564.00 / Non-Profit Aliquot Approximate quantity3
    066964-UNC-RESUS Litter recovered from cryo-archive $2,914.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.
    Cryopreserved material may be available upon request, please inquire to mmrrc@med.unc.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.