C57BL/6JCya-Lactbem1flox/Cya
Common Name:
Lactb-flox
Product ID:
S-CKO-16988
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
Quantity
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Basic Information
Strain Name
Lactb-flox
Strain ID
CKOCMP-80907-Lactb-B6J-VA
Gene Name
Product ID
S-CKO-16988
Gene Alias
LACT-1; Lact1; Mrpl56
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-Lactbem1flox/Cya mice (Catalog S-CKO-16988) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000034929
NCBI RefSeq
NM_030717
Target Region
Exon 3~5
Size of Effective Region
~4.2 kb
Detailed Document
Overview of Gene Research
LACTB, or serine beta-lactamase-like protein, is the only mammalian mitochondrial homolog evolved from penicillin-binding proteins and β-lactamases in bacteria. As an active-site serine protease, it polymerizes into stable filaments located in the mitochondrial intermembrane space, modulating mitochondrial lipid metabolism and involved in submitochondrial organization. It is also associated with multiple biological processes such as ferroptosis, which is an emerging cancer defense mechanism, and is implicated in various diseases, especially cancers [3,4].
In liver cancer, LACTB knockout promotes cell viability, colony formation, and tumour growth, while its overexpression inhibits these processes by regulating ferroptosis. Specifically, LACTB blocks HSPA8 transcription in a p53-dependent manner, leading to increased NCOA4-mediated ferritinophagy and inhibition of SLC7A11/GSH/GPX4 signalling, thus triggering ferroptosis and suppressing liver cancer progression [1]. In mice, LACTB deletion results in impaired glucose tolerance, elevated lipid levels, and increased sensitivity to kidney disease, while tubule-specific overexpression protects from kidney injury. LACTB acts as a mitochondrial protease to cleave and activate phospholipase A2 group VI (PLA2G6), and genetic deletion of PLA2G6 abolishes the protective function of LACTB. LACTB and downstream PLA2G6 regulate mitochondrial function and ferroptosis by converting oxidized phosphatidylethanolamine to lyso-phosphatidylethanolamine [2].
In conclusion, LACTB plays a crucial role in lipid metabolism, ferroptosis regulation, and mitochondrial function. Studies using gene knockout and overexpression mouse models have revealed its significance in liver cancer and kidney-metabolic disorders. These findings suggest LACTB could be a potential therapeutic target for related diseases.
References:
1. Zeng, Kaixuan, Huang, Na, Liu, Nanbin, Li, Yong, Li, Zongfang. 2024. LACTB suppresses liver cancer progression through regulation of ferroptosis. In Redox biology, 75, 103270. doi:10.1016/j.redox.2024.103270. https://pubmed.ncbi.nlm.nih.gov/39047638/
2. Li, Shen, Liu, Hongbo, Hu, Hailong, McReynolds, Melanie R, Susztak, Katalin. 2024. Human genetics identify convergent signals in mitochondrial LACTB-mediated lipid metabolism in cardiovascular-kidney-metabolic syndrome. In Cell metabolism, 37, 154-168.e7. doi:10.1016/j.cmet.2024.10.007. https://pubmed.ncbi.nlm.nih.gov/39561766/
3. Cascone, Annunziata, Lalowski, Maciej, Lindholm, Dan, Eriksson, Ove. 2022. Unveiling the Function of the Mitochondrial Filament-Forming Protein LACTB in Lipid Metabolism and Cancer. In Cells, 11, . doi:10.3390/cells11101703. https://pubmed.ncbi.nlm.nih.gov/35626737/
4. Li, Xiaohua, Ren, Zhongkai, Huang, Xiaohong, Yu, Tengbo. 2022. LACTB, a Metabolic Therapeutic Target in Clinical Cancer Application. In Cells, 11, . doi:10.3390/cells11172749. https://pubmed.ncbi.nlm.nih.gov/36078157/
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