C57BL/6JCya-Saa1em1flox/Cya
Common Name:
Saa1-flox
Product ID:
S-CKO-04905
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
Quantity
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Basic Information
Strain Name
Saa1-flox
Strain ID
CKOCMP-20208-Saa1-B6J-VA
Gene Name
Product ID
S-CKO-04905
Gene Alias
Saa-1; Saa2
Background
C57BL/6JCya
NCBI ID
Modification
Conditional knockout
Chromosome
7
Phenotype
Document
Application
--
Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Saa1em1flox/Cya mice (Catalog S-CKO-04905) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000128088
NCBI RefSeq
NM_009117
Target Region
Exon 3~4
Size of Effective Region
~2.1 kb
Detailed Document
Overview of Gene Research
Saa1, short for Serum amyloid A1, is a lipid-binding protein and an important regulator in inflammation [2,3]. It is also involved in maintaining glucose and lipid homeostasis [1]. Saa1 proteins are lipophilic and contribute to high-density lipoproteins and cholesterol transport, and interact with specific receptors, being implicated in various biological processes like tissue remodeling, cancer metastasis, and inflammation-related diseases [2].
In a study on cardiac remodeling, Saa1-deficient (SAA1-/-) mice exposed to transverse aortic banding surgery showed a lower level of cardiac fibrosis compared to wild-type mice after 8 weeks, indicating that Saa1 absence hinders cardiac fibrosis likely by inhibiting NF-κB/p38/JNK and TGFβ/Smad pathways [3]. In the context of non-alcoholic fatty liver disease (NAFLD), knockout of SAA1/2 or knockdown of hepatic SAA1/2 in mice fed a high-fat diet promoted energy expenditure and alleviated metabolic disorder, hepatic steatosis, and inflammation. Conversely, endogenous overexpression of Saa1 in hepatocytes aggravated these conditions, and this was alleviated by knockout of toll-like receptor 4 (TLR4), suggesting Saa1 forms a SAA1/TLR4/NF-κB/SAA1 feedforward regulatory circuit to trigger hepatic steatosis and intra-hepatic inflammation [4].
In conclusion, Saa1 is significantly involved in inflammation-related biological processes. Studies using Saa1 knockout mouse models have revealed its role in cardiac remodeling and NAFLD, providing insights into the disease mechanisms and potential therapeutic targets in these disease areas.
References:
1. Zhou, Xindie, Li, Jin, Jiang, Lifeng, Huang, Yong, Xu, Nanwei. 2019. SAA1 gene polymorphisms in osteoporosis patients. In Bioscience reports, 39, . doi:10.1042/BSR20181031. https://pubmed.ncbi.nlm.nih.gov/30737305/
2. Sack, George H. . Serum Amyloid A (SAA) Proteins. In Sub-cellular biochemistry, 94, 421-436. doi:10.1007/978-3-030-41769-7_17. https://pubmed.ncbi.nlm.nih.gov/32189310/
3. Xiao, Yusha, Ni, Lihua, Shi, Hongjie, Liu, Jinping, Luo, Pengcheng. . SAA1 deficiency alleviates cardiac remodeling by inhibiting NF-κB/p38/JNK and TGFβ/Smad pathways. In FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 37, e22911. doi:10.1096/fj.202201506R. https://pubmed.ncbi.nlm.nih.gov/37022639/
4. Jiang, Bin, Wang, Dongdong, Hu, Yunfu, Ben, Jingjing, Chen, Qi. 2022. Serum amyloid A1 exacerbates hepatic steatosis via TLR4-mediated NF-κB signaling pathway. In Molecular metabolism, 59, 101462. doi:10.1016/j.molmet.2022.101462. https://pubmed.ncbi.nlm.nih.gov/35247611/
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