Strain Name:
B6.Cg-Hmgn2tm1.1Mbus Hmgn1tm1Mbus/Mmjax
Stock Number:
043523-JAX
Citation ID:
RRID:MMRRC_043523-JAX
Other Names:

Hmgn1,n2 DKO, Hmgn1-/-n2-/-

Strain Information

Hmgn1tm1Mbus
Name: high mobility group nucleosomal binding domain 1; targeted mutation 1, Michael Bustin
Synonyms: Hmgn1tm1, Hmgn1-
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 16
Alteration at locus: Knockout
Hmgn2tm1.1Mbus
Name: high mobility group nucleosomal binding domain 2; targeted mutation 1.1, Michael Bustin
Synonyms: Hmgn2tm1Mbus
Type: Allele
Species: Mus musculus (mouse)
Chromosome: 4
Alteration at locus: Knockout
Hmgn2
Name: high mobility group nucleosomal binding domain 2
Synonyms: HMG-17, Hmg17
Type: Gene
Species: Mus musculus (mouse)
Chromosome: 4
Alteration at locus: Knockout
NCBI: 15331
HGNC: HGNC:4986
Homologene: 128537
Hmgn1
Name: high mobility group nucleosomal binding domain 1
Synonyms: HMG-14, Hmg14
Type: Gene
Species: Mouse
Chromosome: 16
Alteration at locus: Knockout
NCBI: 15312
HGNC: HGNC:4984
Homologene: 3643
Genetic Alterations

Hmgn1 and Hmgn2 (high mobility group nucleosomal binding domain) double KO mice exhibit multiple phenotypes in metabolism and an altered distribution of leukocyte subpopulations. Mouse embryo fibroblasts (MEFs) from double KO mice exhibit alterations in DNAse 1 hypersensitive sites. These mice may be useful for research in chromatin regulatory sites and nucleosome binding architectural proteins.

ES Cell Line

ESVJ-1183, v6.4,

Phenotype
Hmgn1 and Hmgn2 (high mobility group nucleosomal binding domain) encode two nuclear proteins that specifically bind to nucleosomes and are associated with the chromatin regions containing DNAse 1 hypersensitive (DHS) sites. Loss of one HMGN protein results in a compensatory increase in nucleosome binding from the other protein. Loss of both HMGN1 and HMGN2 in mouse embryonic fibroblasts (MEFs) prepared from the double KO mice results in alterations in DHS distribution and intensity. 60% of DHS sites found in the wild type MEFs are lost in the double KO and 43% of sites are newly formed. The loss of DHS sites is primarily in enhancer regions. In addition, the width of the remaining DHS sites is decreased.

Double KO mice exhibit multiple phenotypes in screens performed by the German Mouse Clinic including: increased food intake, decreased body mass, decreased glucose and cholesterol in fasting males, increased triglyceride, glycerol and NEFA in fasting females, lower plasma insulin, higher frequencies of T, NK and NKT cells, altered CD4+ to CD8+ ratios in T cells and an altered distribution of cells in the NK and B cell compartments, reduced corneal thickness, enlarged eye axial lengths and increased numbers of fundic blood vessels. These mice may be useful for research in chromatin regulatory sites and nucleosome binding architectural proteins.

Mammalian Phenotype Terms
Allelic Composition: (Genetic Background: )

Allelic Composition: (Genetic Background: )

  • mortality/aging
    • mortality/aging []
Strain Development
The Hmgn1tm1Mbustargeting vector contains a NEO cassette used to disrupt exons 2, 3 and part of exon 4. The construct was electroporated into 129X1/SvJ-derived ESVJ-1183 embryonic stem (ES) cells. Correctly targeted ES cells were injected into C57BL/6 blastocysts. The resulting chimeric animals were crossed to C57BL/6 mice, and then backcrossed to C57BL/6J for the equivalent of 10 generations, using a speed congenic protocol.

The Hmgn2tm1.1Mbus targeting vector contains loxP site inserted upstream of exon 1 and a FRT-flanked NEO cassette followed by a second loxP site downstream of exon 6. The construct was electroporated into (C57BL/6J x 129X1/SvJae)F1-derived V6.4 embryonic stem (ES) cells. Correctly targeted ES cells were injected into C57BL/6 blastocysts. The resulting chimeric animals were crossed to mice carrying the Tmem163Tg(ACTB-cre)2Mrt allele to remove the neo cassette and exons 1-6. Progeny were then backcrossed to C57BL/6J for at least 5 generations. The two knock-out lines were then intercrossed to generate double homozygous knock-out mice. Upon arrival at The Jackson Laboratory MMRRC, the mice were crossed to C57BL/6J (Stock No. 000664) at least once to establish the colony.
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 csmmrrc@jax.org. Older strains may not have this information.
  • Cell Biology
  • Developmental Biology
  • Research Tools
Donor
Michael Bustin, Ph.D., National Cancer Institute.

Colony and Husbandry Information

Cryo-recovered strains distributed by the MMRRC at JAX are shipped to the customer from the Pathogen & Opportunistic-Free Animal Room G200 - see https://www.jax.org/jax-mice-and-services/customer-support/customer-service/animal-health/health-status-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 csmmrrc@jax.org.
Coat Color
black
MMRRC Breeding System
Random intra-strain mating
Generation
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: Undetermined Undetermined
Bred to Homozygosity
No
Average litter size
5-9
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 csmmrrc@jax.org 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
043523-JAX-SPERM Cryo-preserved spermatozoa $437.00 / $437.00
Non-Profit / For-Profit
Aliquot Approximate quantity3
043523-JAX-RESUS Litter recovered from cryo-archive $2,022.00 / $2,022.00
Non-Profit / For-Profit
Litter Recovered litter4; additional fees for any special requests.
Cryopreserved material may be available upon request, please inquire to csmmrrc@jax.org 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.