C57BL/6JCya-Samd4em1flox/Cya
Common Name:
Samd4-flox
Product ID:
S-CKO-16027
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
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Basic Information
Strain Name
Samd4-flox
Strain ID
CKOCMP-74480-Samd4-B6J-VA
Gene Name
Product ID
S-CKO-16027
Gene Alias
1700024G08Rik; 1700111L17Rik; 4933436G17Rik; Samd4a; Smaug; Smaug1; sunk
Background
C57BL/6JCya
NCBI ID
Modification
Conditional knockout
Chromosome
14
Phenotype
Document
Application
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Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Samd4em1flox/Cya mice (Catalog S-CKO-16027) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000022386
NCBI RefSeq
NM_001037221
Target Region
Exon 5
Size of Effective Region
~1.6 kb
Detailed Document
Overview of Gene Research
Samd4, part of the SAMD4 protein family, is a novel RNA-binding protein. It can mediate post-transcriptional regulation and translation repression in eukaryotes [2]. The SAMD4 protein family in mammalian cells consists of SAMD4A/Smaug1 and SAMD4B/Smaug2, both containing a common SAM domain to bind to target mRNAs and regulate their stability, degradation, and translation [2]. Samd4 is involved in multiple biological pathways, such as the mTOR/OXPHOS axis [3], and is of great biological importance in processes like cardiac regeneration, skeleton development, and in pathological conditions including cancer, myopathy, and neurodegenerative diseases [1,2,4,5]. Genetic models, especially KO/CKO mouse models, are valuable for studying its functions.
In KO mouse models, Samd4 deficiency led to multiple developmental defects. Mice lacking Samd4 had delayed bone development, decreased osteogenesis, and chondrocyte defects due to increased MIG6 protein synthesis as SAMD4 usually binds Mig6 mRNA to inhibit its translation [4]. A Samd4 missense mutation in mice caused leanness, myopathy, uncoupled mitochondrial respiration, and dysregulated mTORC1 signaling, likely due to hypophosphorylation of 4E-BP1 and S6 in muscle and adipose tissues [6]. VSMC-specific knockout of SAMD4A exacerbated pancreatic elastase-induced abdominal aortic aneurysm formation, while VSMC knock-in attenuated it, with SAMD4A regulating VSMC contraction by binding to KDM2B [7].
In conclusion, Samd4 plays essential roles in regulating protein translation, which is crucial for processes like bone development and mitochondrial function. KO/CKO mouse models have revealed its significance in diseases such as skeletal disorders, myopathy, and abdominal aortic aneurysm. Understanding Samd4's functions can potentially provide new therapeutic strategies for these associated diseases.
References:
1. Zheng, Hao, Huang, Senlin, Wei, Guoquan, Liao, Yulin, Bin, Jianping. 2022. CircRNA Samd4 induces cardiac repair after myocardial infarction by blocking mitochondria-derived ROS output. In Molecular therapy : the journal of the American Society of Gene Therapy, 30, 3477-3498. doi:10.1016/j.ymthe.2022.06.016. https://pubmed.ncbi.nlm.nih.gov/35791879/
2. Wang, Xin-Ya, Zhang, Li-Na. 2023. RNA binding protein SAMD4: current knowledge and future perspectives. In Cell & bioscience, 13, 21. doi:10.1186/s13578-023-00968-x. https://pubmed.ncbi.nlm.nih.gov/36732864/
3. Liu, Jiaqi, Liang, Yue, Meng, Qinghao, Fang, Yinquan, Hu, Gang. 2024. Antagonism of β-arrestins in IL-4-driven microglia reactivity via the Samd4/mTOR/OXPHOS axis in Parkinson's disease. In Science advances, 10, eadn4845. doi:10.1126/sciadv.adn4845. https://pubmed.ncbi.nlm.nih.gov/39167645/
4. Niu, Ningning, Xiang, Jian-Feng, Yang, Qin, Yang, Li, Zou, Weiguo. 2017. RNA-binding protein SAMD4 regulates skeleton development through translational inhibition of Mig6 expression. In Cell discovery, 3, 16050. doi:10.1038/celldisc.2016.50. https://pubmed.ncbi.nlm.nih.gov/28163927/
5. Choi, Joon Hyuk, Thung, Swan N. 2024. Recent Advances in Pathology of Intrahepatic Cholangiocarcinoma. In Cancers, 16, . doi:10.3390/cancers16081537. https://pubmed.ncbi.nlm.nih.gov/38672619/
6. Chen, Zhe, Holland, William, Shelton, John M, Moresco, Eva Marie Y, Beutler, Bruce. 2014. Mutation of mouse Samd4 causes leanness, myopathy, uncoupled mitochondrial respiration, and dysregulated mTORC1 signaling. In Proceedings of the National Academy of Sciences of the United States of America, 111, 7367-72. doi:10.1073/pnas.1406511111. https://pubmed.ncbi.nlm.nih.gov/24799716/
7. Chen, Qing, Liu, Shenrong, Zhou, Haobin, Song, Haoyu, Huang, Xianying. 2025. SAMD4A inhibits abdominal aortic aneurysm development and VSMC phenotypic transformation through targeting KDM2B. In Journal of advanced research, , . doi:10.1016/j.jare.2025.03.018. https://pubmed.ncbi.nlm.nih.gov/40081568/
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