Strain Name:
B6N;SJL-Dsppem1Jpsi/Mmnc
Stock Number:
067179-UNC
Citation ID:
RRID:MMRRC_067179-UNC
Other Names:
Dspp -1 frameshift mutation

Strain Information

Dsppem1Jpsi
Name: dentin sialophosphoprotein; endonuclease-mediated mutation 1, James Simmer
Synonyms: Dspp-1fs
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 5
Alteration at locus: CRISPR
Dspp
Name: dentin sialophosphoprotein
Synonyms: Dsp, Dmp3, Dpp
Type: Gene
Species: Mouse
Chromosome: 5
Alteration at locus: CRISPR
NCBI: 666279
HGNC: HGNC:3054
Genetic Alterations
The Dspp gene encodes the dentin sialophosphoprotein. A Flag tag was inserted at the C-terminus of DSP and a single nucleotide deletion in the coding region of DPP.

HGVS nomenclature (Dspp variant):

  • Genbank RefSeq - mRNA: NM_010080.3
  • Genbank RefSeq, protein: NP_034210.2
  • Variant, nucleic acid level: c.1365del
  • Variant, amino acid level, predicted: p.Ser456Alafs*505
    Check this variant: LUMC Mutalyzer
Note: The ā€œGā€ deletion target sequence had additional modifications to prevent further Cas9-mediated editing of the donor molecule upon incorporation into the genome.
Genotype Determination
  • Genotyping Protocol(s)
  • Center protocol and contact for technical support will be shipped with mice.
  • Phenotype

    Upon secretion by the odontoblast, dentin sialophosphoprotein is cleaved to form dentin sialoprotein (DSP) and dentin phosphoprotein (DPP). This mouse model allows for the assessment of associated protein production, secretion, and characterization of dentin malformation in the absence of functional DPP.

    In terms of growth and development, reproduction, and life span, there are no notable deviations from the wild-type. The Dspp -1 frameshift created a tooth dentin malformation that is similar to the human disorder dentinogenesis imperfecta type II (OMIM #125490).
    Strain Development
    Using CRISPR/Cas9 gene-editing technology on a B6NSJLF1 background, above-noted genetic alterations were introduced. F1 animals were mated to C57BL/6N for 2 generations before sib-pair mating began.
    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 mmrrc@med.unc.edu. Older strains may not have this information.
    • Developmental Biology
    Donor
    James Simmer, Ph.D., University of Michigan.
    Jan Ching Chun Hu, Ph.D., University of Michigan.
    Primary Reference
    In preparation, submitted, or in press

    Colony and Husbandry Information

    Because of tooth defects, the null mice are maintained on hard chow and diet gel. "Love Mash" is an acceptable alternative for mice with tooth defects.

    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 and sib-mating
    Generation
    N2 (C57BL/6NCrl), F5+
    Overall Breeding Performance
    Good
    Viability and Fertility: Female Male Comments
    Homozygotes are viable: Yes Yes
    Homozygotes are fertile: Yes Yes
    Heterozygotes are fertile: Yes Yes
    Age Reproductive Decline: 7 to 9 months 7 to 9 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.

    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
    067179-UNC-RESUS Litter recovered from cryo-archive $2,914.00 / $4,837.00
    Non-Profit / For-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.