Strain Name:
C57BL/6NTac-Brd1tm1.2Arte/AborgMmucd
Stock Number:
065563-UCD
Citation ID:
RRID:MMRRC_065563-UCD
Other Names:
Brd1 Knockout

Strain Information

Brd1tm1.2Arte
Name: bromodomain containing 1; targeted mutation 1.2, TaconicArtemis
Synonyms: Brd1tm1569.2Arte
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 15
Alteration at locus: Targeted Mutation
Brd1
Name: bromodomain containing 1
Synonyms: 1110059H06Rik
Type: Gene
Species: Mouse
Chromosome: 15
Alteration at locus: Targeted Mutation
NCBI: 223770
HGNC: HGNC:1102
Homologene: 40956
Genetic Alterations

A loxPsite and a FRT site flanked neomycine resistance cassette were inserted intointron 2 and a second loxP site into intron 5. The neo cassette was removedthrough subsequent flp-mediated recombination. Exons 3-5 were deleted throughsubsequent cre-mediated recombination.

Genotype Determination
ES Cell Line
Not Specified
Phenotype
The schizophrenia and bipolar disorder associated gene, BRD1, encodes a scaffold protein that, in complex with epigenetic modifiers, regulates gene sets enriched for psychiatric disorder risk. Brd1+/− mice have a ~50% reduction in Brd1 mRNA and protein along with a reduced global cerebral H3K14 acetylation of ~19%. Brd1+/- mice healthy and overall indistinguishable from WT mice, but the exhaustive characterization of this strain has revealed substantial changes in cerebral gene expression, neurochemistry, brain electrophysiology, neurite and spine morphologies, regional brain volumes, cognition and behavior with broad translational relevance to psychiatric disorders. Interestingly, and mirroring the gender differences observed in psychiatric disorders, these changes are sex-biased with e.g. only female Brd1+/- mice displaying changes in affective behaviors and only male mice showing increased sensitivity towards the psychotomimetic drug, cocaine. Another strain of Brd1 KO mice has been developed by researchers at Chiba University (Japan), but this strain has only been characterized in terms of blood-related parameters (PMID:21753189).

Note: Homozygotes are embryonically lethal.
MeSH Terms
  • Animals
  • DNA, Complementary/genetics
  • High-Throughput Nucleotide Sequencing/methods
  • Mice
  • Sequence Analysis, RNA
  • Software
  • Alleles
  • Behavior, Animal/physiology
  • Cognition/physiology
  • Cognition Disorders/genetics
  • Cognition Disorders/physiopathology
  • Disease Models, Animal
  • Executive Function/physiology
  • Heterozygote
  • Histone Acetyltransferases/genetics
  • Male
  • Memory, Long-Term/physiology
  • Memory, Short-Term/physiology
  • Mice, Knockout
  • Prefrontal Cortex/physiopathology
  • Schizophrenia/genetics
  • Schizophrenia/physiopathology
  • Acetylation
  • Animals, Genetically Modified/genetics
  • Corpus Striatum/metabolism
  • Dopamine/metabolism
  • Gene Expression/genetics
  • Histone Acetyltransferases/physiology
  • Histones/metabolism
  • Interneurons/physiology
  • Serotonin/metabolism
  • Synaptic Transmission/genetics
  • Biomarkers
  • Brain/metabolism
  • Brain/pathology
  • Cell Count
  • Corpus Striatum/pathology
  • Gene Expression
  • Gene Expression Profiling
  • Histone Acetyltransferases/metabolism
  • Humans
  • Immunohistochemistry
  • Interneurons/metabolism
  • Neurons/metabolism
  • Organ Size
  • Parvalbumins/genetics
  • Parvalbumins/metabolism
  • Dendritic Spines/pathology
  • Female
  • Proteome
  • Schizophrenia/metabolism
  • Schizophrenia/pathology
Strain Development
A homologous recombinant clone of C57BL/6NTac embryonic stem (ES) cells (TaconicArtemis GmbH) was obtained by electroporation, counter-selected for by gancyclovir (2 µM) and verified for correct homologous recombination and single integration by extended Southern blotting analysis. BALB/c blastocysts were microinjected with targeted C57BL/6NTac ES cells and transferred to pseudo-pregnant NMRI females. Chimeras were then bred to female C57BL/6NTac-Tg(CAG-flpe)2Arte (Taconic "Flp deleter"). Germline transmission was apparent by black, strain C57BL/6, coat color. To obtain in vivo Cre-mediated deletion of exon 3-5 of the targeted allele, offspring were bred to Taconic's "Cre deleter" C57BL/6NTac-Gt(ROSA)26Sortm16(cre)Arte. Thereafter, the Cre and Flpe loci were eliminated from the strain by selective breeding and the targeted allele was maintained on a congenic C57BL/6-NTac genetic background by continuous crossing of heterozygous Brd1+/- male mice with C57BL/6-NTac female mice.
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@ucdavis.edu. Older strains may not have this information.
  • Cell Biology
  • Developmental Biology
  • Hematology
  • Metabolism
  • Models for Human Disease
  • Neurobiology
  • Research Tools
Donor
Anders Børglum, M.D., Aarhus University.
Primary Reference

Rajkumar AP, Qvist P, Lazarus R, Lescai F, Ju J, Nyegaard M, Mors O, BørglumAD, Li Q, Christensen JH. Experimental validation of methods for differentialgene expression analysis and sample pooling in RNA-seq. BMC Genomics. 2015 Jul25;16:548. doi: 10.1186/s12864-015-1767-y. (Medline PMID: 26208977)

Qvist P, Rajkumar AP, Redrobe JP, Nyegaard M, Christensen JH, Mors O, Wegener G, Didriksen M, Børglum AD. Mice heterozygous for an inactivated allele of theschizophrenia associated Brd1 gene display selective cognitive deficits withtranslational relevance to schizophrenia. Neurobiol Learn Mem. 2017May;141:44-52. doi: 10.1016/j.nlm.2017.03.009. Epub 2017 Mar 21. (Medline PMID: 28341151)

Qvist P, Christensen JH, Vardya I, Rajkumar AP, Mørk A, Paternoster V,Füchtbauer EM, Pallesen J, Fryland T, Dyrvig M, Hauberg ME, Lundsberg B, FejginK, Nyegaard M, Jensen K, Nyengaard JR, Mors O, Didriksen M, Børglum AD. TheSchizophrenia-Associated BRD1 Gene Regulates Behavior, Neurotransmission, andExpression of Schizophrenia Risk Enriched Gene Sets in Mice. Biol Psychiatry.2017 Jul 1;82(1):62-76. doi: 10.1016/j.biopsych.2016.08.037. Epub 2016 Sep 15.(Medline PMID: 27837920)

Qvist P, Eskildsen SF, Hansen B, Baragji M, Ringgaard S, Roovers J,Paternoster V, Molgaard S, Corydon TJ, Stødkilde-Jørgensen H, Glerup S, Mors O,Wegener G, Nyengaard JR, Børglum AD, Christensen JH. Brain volumetric alterationsaccompanied with loss of striatal medium-sized spiny neurons and corticalparvalbumin expressing interneurons in Brd1(+/-) mice. Sci Rep. 2018 Nov7;8(1):16486. doi: 10.1038/s41598-018-34729-5. (Medline PMID: 30405140)

Paternoster V, Svanborg M, Edhager AV, Rajkumar AP, Eickhardt EA, Pallesen J, Grove J, Qvist P, Fryland T, Wegener G, Nyengaard JR, Mors O, Palmfeldt J,Børglum AD, Christensen JH. Brain proteome changes in female Brd1(+/-) miceunmask dendritic spine pathology and show enrichment for schizophrenia risk.Neurobiol Dis. 2019 Apr;124:479-488. doi: 10.1016/j.nbd.2018.12.011. Epub 2018Dec 24. (Medline PMID: 30590179)

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
Eye
Black
MMRRC Breeding System
Backcross
Generation
N20+ (C57BL/6NTac)
Overall Breeding Performance
Good
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: No No
Homozygotes are fertile: N/A N/A
Hetero/Hemizygotes are fertile: Yes Yes
Age Reproductive Decline: Undetermined 10 to 12 months
Average litter size
7 to 9
Recommended wean age
3 Weeks
Average Pups Weaned
7 to 9

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.

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
065563-UCD-SPERM Cryo-preserved spermatozoa $546.25 / $869.88
Non-Profit / For-Profit
Aliquot Approximate quantity3
065563-UCD-RESUS Litter recovered from cryo-archive $4,044.00 / $7,650.23
Non-Profit / For-Profit
Litter Recovered litter4; additional fees for any special requests.
Cryopreserved material may be available upon request, please inquire to mmrrc@ucdavis.edu for more information.

Some MMRRC strains were submitted by the donor as cryopreserved germplasm, and because these strains were not cryopreserved by the MMRRC, we have not assessed the quality, nor genotype, of this material. Our expertise in reviving mice from various qualities of frozen sperm and embryos, using methods like IVF and ICSI, gives us confidence in successful recoveries in most cases. However, due to the uncertain quality of these samples, we'll limit revival attempts to two per order. Additional attempts are available for a fee, on top of standard charges, if requested. It's important to note that some strains may lack the expected mutation, so we can't assure successful order fulfillment until we attempt to revive the strain.

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.