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Strain Name:
B6;B6J-Asrgl1tm1Rayy/Mmucd
Stock Number:
075986-UCD
Citation ID:
RRID:MMRRC_075986-UCD
Other Names:
Asrgl1 mut/mut

Strain Information

QUALITY CONTROL OF B6;B6J-Asrgl1tm1Rayy/Mmucd  |  University of California at Davis
Last Updated:
Strain Data and Information Information by Submitter Assessed by MMRRC1,2
Published Provided
Allele-specific genotype3n.d.
Genetic backgroundn.d.
Viability of genotypes available for distributionn.d.
Specific Pathogen- Status n.d.
Recoverability of cryopreserved sperm/embryos4 n.d.
Gene or allele sequence3n.d.
Gene or allele expression3n.d.
Gene or allele function3n.d.
Observable and/or measurable phenotypesn.d.
Fertility of genotypes available for distributionn.d.
Fecundity/breeding performance n.d.

1 When indicated as verified ("YES"), then please note that information presented is to the best of our knowledge correct and up-to-date at the time of verification at the MMRRC Distribution Center; however, this information is subject to change due to breeding, maintenance, and other actions on the mouse strain at the MMRRC Distribution Center; direct any questions on this table to the MMRRC Distribution Center for this mouse stain.

2 If verification has not been performed (as indicated by "NO"), investigators may request specific verification testing for a fee. Requests should be submitted directly to the MMRRC Distribution Center assigned to the management, archiving, and distribution of the strain. A full listing of available testing and analytical services is available at https://www.mmrrc.org/about/services.php.

3 This information may or may not apply to each individual engineered allele (e.g., Cre, FlpO) present in the strain.

4 Recovery refers to thawing, in vitro fertilization (IVF), and/or embryo culture leading to live offspring.

Asrgl1
Name: asparaginase like 1
Synonyms: ALP1, 2410004D18Rik
Type: Gene
Species: Mouse
Chromosome: 19
NCBI: 66514
Homologene: 11825
Genetic Alterations
This strain harbors a CRISPR/Cas9-generated knock-in, consisting of a 5bp insertion (c.578_579insAGAAA) in exon 5 of the asparaginase like 1 (Asrgl1) gene, resulting in a null allele.
ES Cell Line
Not Applicable
Phenotype
The expression of Asrgl1 and its asparaginase activity were undetectable in the retinas of homozygous mutant mice.

Ophthalmic evaluation revealed a significant and progressive decline in scotopic electroretinographic (ERG) responses in homozygous mutant mice beginning at 3 months of age, followed by a reduction in photopic responses at approximately 5 months, compared with age-matched wild-type controls. Immunostaining and RT-PCR analyses with rod- and cone-specific markers demonstrated a loss of cone outer segments and a significant reduction in the expression of Rhodopsin, Opn1sw, and Opn1mw at 3 months of age in homozygous mutant mice relative to controls.

Importantly, the retinal phenotype observed in homozygous mutant mice closely mirrors that reported in patients harboring the G178R mutation in Asrgl1, including:
  • early-onset retinal degeneration,
  • onset of visual abnormalities during the first decade of life,
  • reduced rod and cone function with progressive vision loss,
  • significant abnormalities in both m-opsin- and s-opsin-expressing cones in 9-month-old mice.
These results confirm the critical role of Asrgl1 in retinal homeostasis and underscore the contribution of Asrgl1 mutations in retinal degeneration.

MeSH Terms
  • Animals
  • Humans
  • Infant
  • Mice
  • Asparaginase/genetics
  • Autoantigens/metabolism
  • Disease Models, Animal
  • Escherichia coli
  • Mice, Inbred C57BL
  • Peptide Hydrolases/genetics
  • Phenotype
  • Retinal Degeneration/metabolism
Strain GQC Summary
Gene Specific Genotyping:

To request gene-specific and other genotyping services for a strain, please contact the distribution MMRRC Center for more information.

Background Genetic Quality:

The MMRRC has developed a Genetic Quality Control pipeline using the MiniMUGA array to provide additional information to identify and validate genetic backgrounds of MMRRC strains. For more information on whether genetic background data is available, please contact MMRRC_GeneticQC@med.unc.edu. Note: that MiniMUGA genetic background data is not available on all strains, but can be ordered if desired.

Suggested Control Mice
Littermates of all relevant genotypes.
  • Models for Human Disease
Submitter
Radha Ayyagari, Ph.D., UC San Diego.
Primary Reference

Biswas P, Berry AM, Zawaydeh Q, Bartsch DG, Raghavendra PB, Hejtmancik JF, Khan NW, Riazuddin SA, Ayyagari R. A Mouse Model with Ablated Asparaginase and Isoaspartyl Peptidase 1 (Asrgl1) Develops Early Onset Retinal Degeneration (RD) Recapitulating the Human Phenotype. Genes (Basel). 2022 Aug 17;13(8):1461. doi: 10.3390/genes13081461. (Medline PMID: 36011372)

Strain Development
The Asrgl1 gene ablated mouse model (Asrgl1mut/mut) was generated using a CRISPR/Cas9 system. A concentrated 25 µL cocktail of 100 ng/µL single-stranded oligodeoxynucleotides (ssODNs) as a repair template was used along with 20 ng/µL sgRNAs and 50 ng/µL Cas9 mRNA. This CRISPR/Cas9 cocktail was microinjected into the embryos of C57BL/6 mice. Asrgl1mut/mut were genotyped using allele-specific PCR with primers flanking the insertion site and the genotype was confirmed by Sanger sequencing. Additional genotyping for the rd8 and rd1 mutations revealed the presence of the rd8 mutation in addition to the Asrgl1 5 bp insertion (c.578_579insAGAAA), but not the rd1 mutation. Asrgl1mut/mut mice with the rd8 allele were bred with wild-type C57BL/6J (Strain #:000664) to generate rd8-mutation-free Asrgl1 mutant mice and, subsequently, these mice were bred to generate homozygous Asrgl1mut/mut mice that were free of the Rd1 or Rd8 mutations.


Disclaimer: If MMRRC Strain Genetic Quality Control (GQC; based on MiniMUGA genotyping and analysis) has been completed for this strain, the information might differ from the genetic background information provided by the submitter. MiniMUGA genetic analysis is done on a strain’s tissue samples taken when archived by or ordered from the assigned MMRRC Center.

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
Sib-mating
Generation
N/A
Overall Breeding Performance
Undetermined
Viability and Fertility: Female Male Comments
Homozygotes are viable: Yes Yes
Homozygotes are fertile: Yes Yes
Heterozygotes are fertile: Yes Yes
Age Reproductive Decline: Greater than 12 months Greater than 12 months
Average litter size
4 to 6
Recommended wean age
3 Weeks
Average Pups Weaned
4 to 6

Order Information

Limited quantities of breeder mice (recovered litter) are available from a cryoarchive; recovered litter usually available to ship in 3 to 4 months.

A Commercial License Agreement from the Submitter is required for for-profit entities to use this strain. For more information, please contact Eric Gosink.

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.

A Commercial License Agreement from the Submitter is required for for-profit entities to use this strain. For more information, please contact Eric Gosink

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
075986-UCD-RESUS Litter recovered from cryo-archive $5,892.91 / $6,181.91
Non-Profit / For-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.