Strain Name:
B6.Cg-Tg(CD68-Tnfsf13b)MB21Nemz/Mmucd
Stock Number:
036508-UCD
Citation ID:
RRID:MMRRC_036508-UCD
Other Names:
MB21

Strain Information

Tnfsf13b
Name: tumor necrosis factor (ligand) superfamily, member 13b
Synonyms: BLyS, D8Ertd387e, TALL-1, BAFF, zTNF4
Type: Gene
Species: Mouse
Chromosome: 8
NCBI: 24099
Homologene: 48443
CD68
Name: CD68 molecule
Type: Gene
Species: Homo sapiens (human)
Chromosome: 17
Tg(CD68-Tnfsf13b)MB21Nemz
Name: transgene insertion MB21, David Nemazee
Type: Transgene
Species: Mus musculus (mouse)
Chromosome: unknown
Alteration at locus: Transgenic
Genetic Alterations
The cDNA encoding a c-myc-tagged mouse Tnfsf13b was inserted into the blunt end repaired XbaI sites in the human CD68 promoter vector.
Genotype Determination
Phenotype

Homozygous: Not studied.
Hemizygous: Mice have excess B lymphocytes, particularly marginal zone phenotype B cells, hyper gammaglobulinemia, hyper IgA production, and a tendency to autoantibody formation and defective B lymphocyte tolerance.

MeSH Terms
  • Animals
  • Autoantibodies/immunology
  • Autoimmunity/immunology
  • B-Cell Activating Factor/immunology
  • B-Lymphocytes/cytology
  • B-Lymphocytes/immunology
  • B-Lymphocytes/metabolism
  • Cell Separation
  • Enzyme-Linked Immunosorbent Assay
  • Flow Cytometry
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Polymerase Chain Reaction
  • Receptors, Antigen, B-Cell/immunology
  • Receptors, Antigen, B-Cell/metabolism
  • Self Tolerance/immunology
  • Alternative Splicing
  • Antigens, CD/genetics
  • Antigens, Differentiation, Myelomonocytic/genetics
  • B-Cell Activating Factor
  • B-Lymphocyte Subsets/cytology
  • B-Lymphocyte Subsets/immunology
  • Base Sequence
  • DNA, Complementary/genetics
  • Female
  • Humans
  • Immunoglobulins/blood
  • Male
  • Membrane Proteins/antagonists & inhibitors
  • Membrane Proteins/deficiency
  • Membrane Proteins/genetics
  • Membrane Proteins/metabolism
  • Mice, Knockout
  • Protein Isoforms/antagonists & inhibitors
  • Protein Isoforms/genetics
  • Protein Isoforms/metabolism
  • RNA, Messenger/genetics
  • RNA, Messenger/metabolism
  • T-Lymphocytes/immunology
  • Tumor Necrosis Factor-alpha/antagonists & inhibitors
  • Tumor Necrosis Factor-alpha/deficiency
  • Tumor Necrosis Factor-alpha/genetics
  • Tumor Necrosis Factor-alpha/metabolism
Strain Development
The purified constructs were microinjected into (CBA x C57BL/6)F1 x (C3H x C57BL/6)F1 fertilized eggs before transfer into pseudopregnant foster mothers. Founder MB21 was backcrossed to C57BL/6J. The strain has been maintained by continual backcrossing to C57BL/6J for greater than 12 generations.
Suggested Control Mice
Wild-type littermates or 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@ucdavis.edu. Older strains may not have this information.
  • Developmental Biology
  • Immunology and Inflammation
Donor
David Nemazee, Ph.D., The Scripps Research Institute.
Primary Reference

Gavin AL, Duong B, Skog P, Ait-Azzouzene D, Greaves DR, Scott ML, Nemazee D. deltaBAFF, a splice isoform of BAFF, opposes full length BAFF activity in vivo in transgenic mouse models. J Immunol. 2005 Jul 1;175(1):319-28. (Medline PMID:15972664).

Ota M, Duong BH, Torkamani A, Doyle CM, Gavin AL, Ota T, Nemazee D. Regulation of the B cell receptor repertoire and self reactivity by BAFF. J Immunol. 2010 Oct 1;185(7):4128-36. (Medline PMID: 20817867).

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@ucdavis.edu.
Coat Color
Black
MMRRC Breeding System
Backcross
Breeding Scheme(s)

C57BL/6J females x Hemizygous males

Generation
N12+
Overall Breeding Performance
Excellent, however, donor reports the homozygotes are poor breeders.
NOTE: "Hemizygote" as used here refers to males carrying a mutation on the X Chromosome or mice of either sex carrying an inserted transgene with no homologous allele on the other chromosome.
Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Reduced Reduced Homozygous mice may be fertile but are poor breeders.
Hetero/Hemizygotes are fertile: Yes Yes
Age Reproductive Decline: Unknown Unknown
Average litter size
Unknown
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@ucdavis.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
036508-UCD-EMBRYO Cryo-preserved embryos $1,038.00 / Non-Profit Aliquot Approximate quantity2 : 20-40 embryos / aliquot
036508-UCD-SPERM Cryo-preserved spermatozoa $546.25 / Non-Profit Aliquot Approximate quantity3
036508-UCD-RESUS Litter recovered from cryo-archive $4,044.00 / Non-Profit Litter Recovered litter4; additional fees for any special requests.

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.