C57BL/6JCya-Hspa8em1flox/Cya
Common Name:
Hspa8-flox
Product ID:
S-CKO-02981
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
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Basic Information
Strain Name
Hspa8-flox
Strain ID
CKOCMP-15481-Hspa8-B6J-VA
Gene Name
Product ID
S-CKO-02981
Gene Alias
2410008N15Rik; Hsc70; Hsc71; Hsc73; Hsp73; Hspa10
Background
C57BL/6JCya
NCBI ID
Modification
Conditional knockout
Chromosome
9
Phenotype
Document
Application
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Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Hspa8em1flox/Cya mice (Catalog S-CKO-02981) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000015800
NCBI RefSeq
NM_031165
Target Region
Exon 2~9
Size of Effective Region
~3.6 kb
Detailed Document
Overview of Gene Research
Hspa8, also known as HSC70, is a constitutively expressed, cognate protein of the HSP70 family. It is central in many cellular processes, especially playing a decisive regulatory role in autophagy. It is involved in protein quality control, ensuring proper protein folding and the elimination of abnormal proteins. Additionally, it participates in pathways like Wnt/β -catenin signaling, and is associated with various biological processes and diseases [2,5].
Hspa8 has been shown to have multiple functions through different studies. In anti -bacterial autophagy, it binds to RHOB and BECN1, preventing their degradation and driving liquid -liquid phase separation to concentrate these proteins, thus enhancing protein interaction and stabilization for intracellular bacteria clearance [1]. As an amyloidase, it specifically recognizes and disassembles RHIM -containing functional amyloids to suppress necroptosis signaling in cells and mice [3]. In liver cancer, HBx -induced Hspa8 enhances HBV replication and suppresses ferroptosis, promoting liver cancer progression [4]. In BRAF V600E colorectal cancer, Hspa8 promotes CMA -dependent degradation of CAV1, activating the Wnt/β -catenin pathway and contributing to cancer metastasis and progression [5]. In cholangiocarcinoma, RPL35A promotes cancer progression by mediating Hspa8 ubiquitination [6]. Down -regulation of lncRNA MAGI2 -AS3 decreases H2O2 content and delays cell senescence by stabilizing the Hspa8 protein level [7]. In sperm formation, BAG5 forms a complex with Hspa8 and promotes the folding of SPATA6 for sperm head -tail coupling apparatus assembly [8]. Hspa8 inhibitors can potentiate necroptosis, enhancing cancer cell sensitivity to microtubule -targeting agents and facilitating tumor regression in vivo [9].
In conclusion, Hspa8 is a multifunctional protein with essential roles in autophagy, protein folding, and multiple disease -related processes such as anti -bacterial defense, cancer progression, and cell senescence. Studies using in vivo models like mouse models (implied by in vivo experiments in references) have been crucial in revealing these functions, providing insights into potential therapeutic strategies for related diseases.
References:
1. Miao, Chunhui, Zhang, Yajie, Yu, Mingyu, Yao, Zhi, Wang, Quan. 2023. HSPA8 regulates anti-bacterial autophagy through liquid-liquid phase separation. In Autophagy, 19, 2702-2718. doi:10.1080/15548627.2023.2223468. https://pubmed.ncbi.nlm.nih.gov/37312409/
2. Stricher, François, Macri, Christophe, Ruff, Marc, Muller, Sylviane. 2013. HSPA8/HSC70 chaperone protein: structure, function, and chemical targeting. In Autophagy, 9, 1937-54. doi:10.4161/auto.26448. https://pubmed.ncbi.nlm.nih.gov/24121476/
3. Wu, Erpeng, He, Wenyan, Wu, Chenlu, Wang, Sheng, Sun, Liming. 2023. HSPA8 acts as an amyloidase to suppress necroptosis by inhibiting and reversing functional amyloid formation. In Cell research, 33, 851-866. doi:10.1038/s41422-023-00859-3. https://pubmed.ncbi.nlm.nih.gov/37580406/
4. Wang, Yufei, Zhao, Man, Zhao, Lina, Lu, Wei, Zhang, Xiaodong. . HBx-Induced HSPA8 Stimulates HBV Replication and Suppresses Ferroptosis to Support Liver Cancer Progression. In Cancer research, 83, 1048-1061. doi:10.1158/0008-5472.CAN-22-3169. https://pubmed.ncbi.nlm.nih.gov/36745032/
5. Li, Bowen, Ming, Hui, Qin, Siyuan, Jiang, Jingwen, Huang, Canhua. 2023. HSPA8 Activates Wnt/β-Catenin Signaling to Facilitate BRAF V600E Colorectal Cancer Progression by CMA-Mediated CAV1 Degradation. In Advanced science (Weinheim, Baden-Wurttemberg, Germany), 11, e2306535. doi:10.1002/advs.202306535. https://pubmed.ncbi.nlm.nih.gov/37973552/
6. Zhang, Chengshuo, Wang, Yu, Wu, Gang, Qi, Ruizhao, Zhang, Jialin. 2024. RPL35A promotes the progression of cholangiocarcinoma by mediating HSPA8 ubiquitination. In Biology direct, 19, 16. doi:10.1186/s13062-024-00453-6. https://pubmed.ncbi.nlm.nih.gov/38395908/
7. Zhang, Yingmin, Qiao, Xinhua, Liu, Lihui, Chen, Runsheng, Chen, Chang. 2022. Long noncoding RNA MAGI2-AS3 regulates the H2O2 level and cell senescence via HSPA8. In Redox biology, 54, 102383. doi:10.1016/j.redox.2022.102383. https://pubmed.ncbi.nlm.nih.gov/35797800/
8. Gan, Shiming, Zhou, Shumin, Ma, Jinzhe, Ma, Meisheng, Yuan, Shuiqiao. 2024. BAG5 regulates HSPA8-mediated protein folding required for sperm head-tail coupling apparatus assembly. In EMBO reports, 25, 2045-2070. doi:10.1038/s44319-024-00112-x. https://pubmed.ncbi.nlm.nih.gov/38454159/
9. Wu, Erpeng, Wu, Chenlu, Jia, Kelong, Zhou, Shen'ao, Sun, Liming. 2024. HSPA8 inhibitors augment cancer chemotherapeutic effectiveness via potentiating necroptosis. In Molecular biology of the cell, 35, ar108. doi:10.1091/mbc.E24-04-0194. https://pubmed.ncbi.nlm.nih.gov/38959101/
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