C57BL/6JCya-Setxem1/Cya
Common Name:
Setx-KO
Product ID:
S-KO-18235
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
Quantity
Price:
Contact for Pricing
Basic Information
Strain Name
Setx-KO
Strain ID
KOCMP-269254-Setx-B6J-VA
Gene Name
Product ID
S-KO-18235
Gene Alias
A130090N03; A930037J23Rik; AOA2; Als4; SCAR1; Sen1; mKIAA0625
Background
C57BL/6JCya
NCBI ID
Modification
Conventional knockout
Chromosome
2
Phenotype
Document
Application
--
Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Setxem1/Cya mice (Catalog S-KO-18235) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000061578
NCBI RefSeq
NM_198033
Target Region
Exon 4
Size of Effective Region
~0.9 kb
Detailed Document
Overview of Gene Research
Setx, also known as senataxin, is an RNA/DNA helicase with crucial functions in transcriptional regulation and the DNA damage response by resolving R-loop structures [2]. R-loops are RNA-DNA-hybrid-containing nucleic acids involved in nucleic acid metabolism and processes like transcription, DNA repair, and telomere maintenance [4]. Setx is associated with pathways such as autophagy regulation and the unfolded protein response, and is of great biological importance as its mutations lead to neurodegenerative disorders [2,3].
When nuclear R-loops were perturbed by depleting Setx, XPG-and XPF-dependent cytoplasmic hybrid formation was observed. These cytoplasmic hybrids are R-loop-processing products, which can bind to pattern recognition receptors cGAS and TLR3, activating IRF3 and inducing apoptosis. This was also seen in Setx-mutated cells from patients with ataxia oculomotor apraxia type 2, linking R-loop accumulation to cell death through the innate immune response [1]. Setx depletion was found to inhibit autophagy progression, leading to ubiquitinated protein accumulation, reduced ability to clear protein aggregates, and mitochondrial defects. Analysis of AOA2 patient fibroblasts also revealed autophagy pathway perturbation [2]. In hypoxia, the induction of Setx was proposed to be reliant on the PERK/ATF4 arm of the unfolded protein response, and Setx plays a role in protecting cells from DNA damage induced during transcription in hypoxia [3].
In conclusion, Setx is essential for resolving R-loops, which is vital for normal nucleic acid metabolism and cellular function. Its role in autophagy regulation and response to hypoxia-induced DNA damage is significant. The study of Setx through various models, as indicated by the findings in patient cells, helps in understanding neurodegenerative diseases like AOA2 and the impact of R-loop-related mechanisms on cell death and disease development.
References:
1. Crossley, Magdalena P, Song, Chenlin, Bocek, Michael J, Abu-Remaileh, Monther, Cimprich, Karlene A. 2022. R-loop-derived cytoplasmic RNA-DNA hybrids activate an immune response. In Nature, 613, 187-194. doi:10.1038/s41586-022-05545-9. https://pubmed.ncbi.nlm.nih.gov/36544021/
2. Richard, Patricia, Feng, Shuang, Tsai, Yueh-Lin, Tian, Bin, Manley, James L. 2020. SETX (senataxin), the helicase mutated in AOA2 and ALS4, functions in autophagy regulation. In Autophagy, 17, 1889-1906. doi:10.1080/15548627.2020.1796292. https://pubmed.ncbi.nlm.nih.gov/32686621/
3. Ramachandran, Shaliny, Ma, Tiffany S, Griffin, Jon, Gromak, Natalia, Hammond, Ester M. 2021. Hypoxia-induced SETX links replication stress with the unfolded protein response. In Nature communications, 12, 3686. doi:10.1038/s41467-021-24066-z. https://pubmed.ncbi.nlm.nih.gov/34140498/
4. Yang, Shizhuo, Winstone, Lacey, Mondal, Sohaumn, Wu, Yuliang. 2023. Helicases in R-loop Formation and Resolution. In The Journal of biological chemistry, 299, 105307. doi:10.1016/j.jbc.2023.105307. https://pubmed.ncbi.nlm.nih.gov/37778731/
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