C57BL/6JCya-Meiobem1flox/Cya
Common Name:
Meiob-flox
Product ID:
S-CKO-16170
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
Quantity
Price:
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Basic Information
Strain Name
Meiob-flox
Strain ID
CKOCMP-75178-Meiob-B6J-VA
Gene Name
Product ID
S-CKO-16170
Gene Alias
4930528F23Rik; MLZ-675
Background
C57BL/6JCya
NCBI ID
Modification
Conditional knockout
Chromosome
17
Phenotype
Document
Application
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Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Meiobem1flox/Cya mice (Catalog S-CKO-16170) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000024972
NCBI RefSeq
NM_029197
Target Region
Exon 7~10
Size of Effective Region
~5.6 kb
Detailed Document
Overview of Gene Research
Meiob, also known as meiosis specific with OB domain, is a crucial gene for meiotic recombination. It codes for a single-strand DNA binding protein that participates in DNA double-strand breaks repair during meiosis [3]. Meiob forms a complex with RPA and SPATA22, and these proteins co-localize on meiotic chromosomes. The protein contains an OB domain similar to one of the RPA1 OB folds and exhibits 3'-5' exonuclease activity [4].
In Meiob-null mouse mutants, both male and female mice are infertile due to meiotic arrest at a zygotene/pachytene-like stage. DNA double-strand break repair and homologous chromosome synapsis are impaired in these meiocytes [5]. In humans, novel variants in the MEIOB gene have been identified in patients with primary ovarian insufficiency (POI) and non-obstructive azoospermia (NOA). These variants, such as frameshift, nonsense, and non-canonical splicing variants, produce truncated proteins, affect protein function, and lead to meiotic arrest [1,2].
In conclusion, Meiob is essential for meiotic recombination and chromosomal synapsis. Studies on Meiob-null mouse models and human patients with MEIOB variants have revealed its crucial role in fertility-related diseases like POI and NOA. Understanding the function of Meiob provides insights into the genetic basis of infertility, which is valuable for genetic counseling and patient management.
References:
1. Wang, Yurong, Liu, Ling, Tan, Chen, He, Wen-Bin, Tan, Yue-Qiu. 2022. Novel MEIOB variants cause primary ovarian insufficiency and non-obstructive azoospermia. In Frontiers in genetics, 13, 936264. doi:10.3389/fgene.2022.936264. https://pubmed.ncbi.nlm.nih.gov/35991565/
2. Zhu, Xiaoyu, Hu, Kaiqin, Cheng, Huiru, Tang, Dongdong, Guo, Rui. 2023. Novel MEIOB pathogenic variants including a homozygous non-canonical splicing variant, cause meiotic arrest and human non-obstructive azoospermia. In Clinical genetics, 105, 99-105. doi:10.1111/cge.14426. https://pubmed.ncbi.nlm.nih.gov/37715646/
3. Gershoni, Moran, Hauser, Ron, Barda, Shimi, Pietrokovski, Shmuel, Kleiman, Sandra E. . A new MEIOB mutation is a recurrent cause for azoospermia and testicular meiotic arrest. In Human reproduction (Oxford, England), 34, 666-671. doi:10.1093/humrep/dez016. https://pubmed.ncbi.nlm.nih.gov/30838384/
4. Luo, Mengcheng, Yang, Fang, Leu, N Adrian, La Salle, Sophie, Wang, P Jeremy. . MEIOB exhibits single-stranded DNA-binding and exonuclease activities and is essential for meiotic recombination. In Nature communications, 4, 2788. doi:10.1038/ncomms3788. https://pubmed.ncbi.nlm.nih.gov/24240703/
5. Souquet, Benoit, Abby, Emilie, Hervé, Roxane, Habert, René, Livera, Gabriel. 2013. MEIOB targets single-strand DNA and is necessary for meiotic recombination. In PLoS genetics, 9, e1003784. doi:10.1371/journal.pgen.1003784. https://pubmed.ncbi.nlm.nih.gov/24068956/
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