Strain Name:
B6J.Cg-Mirc55tm1.1Eno/Mmnc
Stock Number:
050697-UNC
Citation ID:
RRID:MMRRC_050697-UNC
Other Names:
miR-126 global knockout mice

Strain Information

Mirc55tm1.1Eno
Name: microRNA cluster 55, including Mir126a through Mir126b; targeted mutation 1.1, Eric N Olson
Synonyms: Mir126atm1.1Eno
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 2
Alteration at locus: Knockout
Mirc55
Name: microRNA cluster 55, including Mir126a through Mir126b
Synonyms: Mir126
Type: Gene
Species: Mus musculus (mouse)
Chromosome: 2
Alteration at locus: Knockout
Genetic Alterations
To generate the Mir126a (miR-126) targeting vector, a 5.7-kb fragment (5’ arm) extending upstream of the Mir126a coding region and a 1.8-kb fragment (3’ arm) downstream of the Mir126a coding region were cloned into the pGKneoF2L2dta targeting plasmid upstream and downstream of the loxP sites and the Frt-flanked neomycin cassette, respectively. Targeted Mir126a ES-cells were screened by Southern blot analysis, and injected into blastocysts. Germline transmission was obtained from the chimeras and the mutant Mir126a allele was obtained by crossing Mir126aneo/+ mice with CAG-Cre transgenic mice.
Genotype Determination
  • Genotyping Protocol(s)
  • Center protocol and contact for technical support will be shipped with mice.
  • ES Cell Line
    Not specified
    Phenotype
    Heterozygotes mice are viable. But 50% of the homozygotes are embryonically/perinatally lethal, and the female homozygotes have lower fertility.
    Mammalian Phenotype Terms
    Allelic Composition: (Genetic Background: )

    MeSH Terms
    • Animals
    • Cells, Cultured
    • Choroid/blood supply
    • Choroid/embryology
    • Endothelial Cells/metabolism
    • Fluorescein Angiography
    • Gene Expression Regulation, Developmental/physiology
    • Human Umbilical Vein Endothelial Cells
    • Humans
    • Mice
    • Mice, Inbred C57BL
    • Mice, Knockout
    • MicroRNAs/genetics
    • Neovascularization, Physiologic/genetics
    • Plasmids
    • Proteins/genetics
    • Real-Time Polymerase Chain Reaction
    • Cell Proliferation
    • Coculture Techniques
    • Disease Models, Animal
    • Eye/metabolism
    • Fibroblasts/cytology
    • Fibroblasts/metabolism
    • Gene Expression Regulation
    • Gene Knockout Techniques
    • Intracellular Signaling Peptides and Proteins/genetics
    • Macular Degeneration/genetics
    • Membrane Proteins/genetics
    • Neovascularization, Pathologic/genetics
    • Neovascularization, Physiologic
    • Organ Specificity
    • Vascular Endothelial Growth Factor A/genetics
    • Base Sequence
    • Blood Vessels/abnormalities
    • Blood Vessels/ultrastructure
    • Endothelium/blood supply
    • Endothelium/metabolism
    • Gene Expression Regulation, Developmental
    • Gene Targeting
    • Intercellular Signaling Peptides and Proteins/metabolism
    • MicroRNAs/chemistry
    • MicroRNAs/metabolism
    • Models, Biological
    • Molecular Sequence Data
    • Myocardial Infarction/pathology
    • Proteins/metabolism
    • Regulatory Sequences, Nucleic Acid/genetics
    • Repressor Proteins/metabolism
    • Signal Transduction
    • Survival Analysis
    • Transcription, Genetic
    Strain Development
    Targeted Mir126a ES-cells were screened by Southern blot analysis, and injected into blastocysts. Germline transmission was obtained from the chimeras and the mutant miR-126 allele was obtained by crossing Mir126aneo/+ mice with CAG-Cre transgenic mice (B6.Cg-Tg(CAG-cre/Esr1*)5Amc/J - JAX Strain #004682). Heterozygotes were crossed to C57BL/6J background for more than 10 generations.
    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 mmrrc@med.unc.edu. Older strains may not have this information.
    • Cardiovascular
    • Developmental Biology
    Donor
    Eric N. Olson, Ph.D, University of Texas, Southwestern Medical Center.
    Shusheng Wang, Ph.D., Tulane University.
    Primary Reference

    Zhao F, Anderson C, Karnes S, Zhou Q, Ma J, Jin ZG, Bhattacharjee PS, Wang S. Expression, regulation and function of miR-126 in the mouse choroid vasculature. Exp Eye Res. 2018 May;170:169-176. doi: 10.1016/j.exer.2018.02.026. Epub 2018 Mar1. (Medline PMID: 29501382)

    Zhou Q, Anderson C, Hanus J, Zhao F, Ma J, Yoshimura A, Wang S. Strand andCell Type-specific Function of microRNA-126 in Angiogenesis. Mol Ther. 2016Oct;24(10):1823-1835. doi: 10.1038/mt.2016.108. Epub 2016 May 19. (Medline PMID: 27203443)

    Wang S, Aurora AB, Johnson BA, Qi X, McAnally J, Hill JA, Richardson JA,Bassel-Duby R, Olson EN. The endothelial-specific microRNA miR-126 governsvascular integrity and angiogenesis. Dev Cell. 2008 Aug;15(2):261-71. doi:10.1016/j.devcel.2008.07.002. (Medline PMID: 18694565)

    Colony and Husbandry Information

    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
    Backcross
    Generation
    N10+ (C57BL/6J)
    Overall Breeding Performance
    Good
    Viability and Fertility: Female Male Comments
    Homozygotes are viable: No No
    Homozygotes are fertile: Reduced Yes
    Heterozygotes are fertile: Yes Yes
    Age Reproductive Decline: Unknown Unknown
    Bred to Homozygosity
    Yes
    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 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
    050697-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.