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C57BL/6JCya-Aspaem1/Cya
Common Name:
Aspa-KO
Product ID:
S-KO-16735
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
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Basic Information
Strain Name
Aspa-KO
Strain ID
KOCMP-11484-Aspa-B6J-VB
Gene Name
Aspa
Product ID
S-KO-16735
Gene Alias
Acy-2; Acy2; nur7
Background
C57BL/6JCya
NCBI ID
11484
Modification
Conventional knockout
Chromosome
11
Phenotype
MGI:87914
Document
Click here to download >>
Application
--
More
Rare Disease Data Center >>
Note
Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Aspaem1/Cya mice (Catalog S-KO-16735) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000021119
NCBI RefSeq
NM_023113
Target Region
Exon 3
Size of Effective Region
~0.1 kb
Detailed Document
Click here to download >>
Overview of Gene Research
Aspa, which encodes aspartoacylase, is a crucial gene. Aspartoacylase hydrolyses N-acetylaspartate (NAA) to acetate and aspartate [1]. Mutations in Aspa are associated with Canavan disease, an autosomal recessive leukodystrophy, highlighting its significance in normal neurological function [1,2,3].

A study on 4 affected cats with a mutation (c.859G>C) in exon 6 of the Aspa gene reported a feline neurodegenerative disease similar to human Canavan disease. These cats showed gait disturbance, head tremors, dysstasia, and seizures, along with abnormal MRI findings, increased NAA excretion, and specific histopathological changes, suggesting that feline Aspa deficiency leads to spongy degeneration of the central nervous system [1].

In another study, introducing the wild-type Aspa gene into patient iPSCs, differentiating them into NPCs, and transplanting these NPCs into CD mice reconstituted Aspa activity, reduced elevated NAA levels, and rescued pathological phenotypes of Canavan disease, demonstrating a potential cell therapy approach [2].

A one-year-old female patient with Canavan disease was found to have a homozygous likely pathogenic variant NM_000049.4(ASPA):c.857C > A p.(Ala286Asp), with a loss of maternal heterozygosity in the 17p13.3-p13.2 region of the Aspa gene [3].

In conclusion, Aspa is essential for the normal metabolism of NAA and its deficiency is associated with Canavan disease. Studies on animal models and patient-derived cells with Aspa mutations have provided insights into the disease mechanism and potential therapeutic strategies for Canavan disease.

References:

1. Takaichi, Yuta, Chambers, James K, Shiroma-Kohyama, Moeko, Nakayama, Hiroyuki, Uchida, Kazuyuki. 2021. Feline Spongy Encephalopathy With a Mutation in the ASPA Gene. In Veterinary pathology, 58, 705-712. doi:10.1177/03009858211002176. https://pubmed.ncbi.nlm.nih.gov/33779415/

2. Chao, Jianfei, Feng, Lizhao, Ye, Peng, Matalon, Reuben, Shi, Yanhong. 2022. Therapeutic development for Canavan disease using patient iPSCs introduced with the wild-type ASPA gene. In iScience, 25, 104391. doi:10.1016/j.isci.2022.104391. https://pubmed.ncbi.nlm.nih.gov/35637731/

3. Yalcintepe, Sinem, Maras, Tuba, Kizilyar, Ilke, Ozen, Yasemin, Gurkan, Hakan. 2024. Homozygous Paternally Inherited ASPA Variant in a Patient with Canavan Disease. In Molecular syndromology, 15, 284-288. doi:10.1159/000536386. https://pubmed.ncbi.nlm.nih.gov/39119446/

Quality Control Standard
Sperm Test

Pre-cryopreservation: Measurement of sperm concentration, determination of sperm viability.

Post-cryopreservation: A vial of cryopreserved sperms is selected for in-vitro fertilization from each batch.

Environmental Standards:SPF
Available Region:Global
Source:Cyagen
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