Recombinant Human X-ray repair cross-complementing protein 6 (XRCC6)

1. KU70 defect influenced the expression of P53, BCL2 and BAX, remaining Jurkat cells in a pro-apoptosis status and KU70 silencing prolonged the survival time and impaired the tumorigenesis ability in Jurkat-xenografted mice. PMID: 30273928
2. Small cell lung cancer (SCLC) subtype had amplified risk with XRCC7 6721G>T. Gene-environment interaction analysis revealed that XRCC6 61C>G showed a strong protective effect towards lung cancer. Survival analysis revealed poor prognosis in case of XRCC6 61C>G SCLC subtype. XRCC7 6721G>T subjects with SCLC subtype showed an increased susceptibility while poor prognosis in case of XRCC6 61C>G. PMID: 29397516
3. verexpression of USP50 has no effect on Ku70 mRNA levels, while it reduces Ku70 protein levels by promoting Ku70 degradation, suggesting that USP50 may indirectly regulate Ku70 protein stability. PMID: 29101126
4. Observations suggest that IER5 is a novel regulator of the non-homologous end-joining pathway pathway for DNA double-strand breaks repair, possibly through its interaction with PARP1 and Ku70. PMID: 29104487
5. The DNA binding domain of Ku70 was essential for formation of the Ku70-STING complex. Knocking down STING in primary human macrophages inhibited their ability to produce IFN-lambda1 in response to transfection with DNA or infection with the DNA virus HSV-2 (herpes simplex virus-2). Together, these data suggest that STING mediates the Ku70-mediated IFN-lambda1 innate immune response to exogenous DNA or DNA virus infection. PMID: 28720717
6. analysis of a novel cellular stress response mechanism in cancer cells and a key role of LSD1/SIRT1/KU70 dynamic interaction in regulating DNA repair and mutation acquisition PMID: 27384990
7. Single nucleotide polymorphisms in the Ku70 gene XRCC6 were independently associated with Elevated Creatine Kinase Levels in Unhealthy Male Nonagenarians. PMID: 26913518
8. Although PAXX-deficient cells lack c-NHEJ phenotypes, PAXX forms a stable ternary complex with Ku bound to DNA. Thus, PAXX plays an accessory role during c-NHEJ that is largely overlapped by XLF's function. PMID: 27705800
9. HTLV-1 infection enhanced the association between Ku70 and stimulator of IFN genes, suggesting that stimulator of IFN genes was involved in Ku70-mediated host defenses against HTLV-1 infection; findings suggest a new sensor that detects HTLV-1 reverse transcription intermediate and controls HTLV-1 replication PMID: 28821586
10. Nuclear PTEN interferes with binding of Ku70 at double-strand breaks through post-translational poly(ADP-ribosyl)ation. PMID: 27741411
11. Results show that DDB2 is critical for chromatin association of XRCC5/6 in the absence of DNA damage and provide evidence that XRCC5/6 are functional partners of DDB2 in its transcriptional stimulatory activity. PMID: 28035050
12. High KU70 expression is associated with drug resistance in glioblastoma. PMID: 27593939
13. These results suggest that Ku-mediated repression of p53 mRNA translation constitutes a novel mechanism linking DNA repair and mRNA translation. PMID: 26964895
14. VCP removes sterically trapped Ku70/80 rings from DNA in double-strand break repair. PMID: 27716483
15. found that the rs228593, rs2267437 and rs1805388 functional polymorphisms probably alter the level of expression of the ATM, XRCC6 and LIG4 genes, respectively, being important in the maintenance of genomic instability in MDS PMID: 27497341
16. Data show that the increased acetylation of Ku autoantigen 70kDa (Ku70) in sirtuin 6 protein (SIRT6)-depleted cells disrupt its interaction with Bax apoptosis regulator protein (Bax), which finally resulted in Bax mitochondrial translocalization. PMID: 28238784
17. Ku70 (XRCC6) was found to bind directly within the CR4 of E1A from human adenovirus type 5. PMID: 27769014
18. periodic phosphorylation of Ku70 by cyclin-cyclin dependent kinases prevents the interaction of Ku with replication origin after initiation events in S-phase. PMID: 27402161
19. The results of this preclinical study imply that Ku70 might be a primary resistance factor of gemcitabine, and Ku70 silence could significantly chemo-sensitize gemcitabine in pancreatic cancer cells. PMID: 28153717
20. results reveal that Src plays a protective role against hyperactive apoptotic cell death by reducing apoptotic susceptibility through phosphorylation of Ku70 at Tyr-530. PMID: 27998981
21. High Expression of XRCC6 Promotes Human Osteosarcoma Cell Proliferation through the beta-Catenin/Wnt Signaling Pathway. PMID: 27455247
22. Data show that X-ray repair cross-complementing protein 6 ( Ku70) is found to interact with closed circular DNA. PMID: 27825805
23. The rs2267437 in XRCC6 was associated with increased initial DSB damage. PMID: 26974709
24. No significant difference in genotype distribution was found between the colorectal cancer patients and controls, or any significant association with cancer-specific or disease-free survival in patients. PMID: 27328741
25. Ku70 expression may play an important role in hepatocellular carcinoma development PMID: 26797321
26. Results show that under hypoxia, Ku70 and DNA-PKcs interact with nuclear RON which activates non-homologous end joining DNA repair conferring chemoresistance. PMID: 26772202
27. We believe that for the first time, genetic variants at XRCC6 and MVP genes are associated with risk of more aggressive disease, and would be taken into account when assessing the malignancy of prostate cancer PMID: 26754263
28. XRCC6 may play an important role in the carcinogenesis of NPC and could serve as a chemotherapeutic target for personalized medicine and therapy. PMID: 26149939
29. these data unveil an involvement of phospho-Ku70 in fast but inaccurate DNA repair; a new paradigm linked to both the deregulation of canonical nonhomologous end-joining and the resistance of malignant cells PMID: 26337656
30. Ku is intact and retains DNA binding activity in early apoptotic cells. PMID: 26976509
31. Data suggest that heat shock factor 1 (HSF1) interacts with both Ku autoantigens Ku70 and Ku86 to induce defective non-homologous end joining (NHEJ) repair activity and genomic instability. PMID: 26359349
32. Our results demonstrate that the phosphorylation-mediated dissociation of Ku70/80 from DSBs frees DNA ends, allowing the initiation of HR in S phase and providing a mechanism of DSB repair pathway choice in mammalian cells. PMID: 26712563
33. retinoblastoma tumor suppressor protein variants disabled for the interaction with XRCC5 and XRCC6, including a cancer-associated variant, are unable to support canonical non-homologous end-joining despite being able to confer cell-cycle control PMID: 25818292
34. the results of the present study suggested that Ku70 acetylation mediated TSA-induced apoptosis in CRC cells. In addition, Ku70 was found to be indispensable in TSA-induced apoptosis due to its role in protecting Bax from proteosomal degradation. PMID: 25695595
35. A direct interaction between Ku70/86 and BRG1 brings together SWI/SNF remodeling capabilities and TOP2beta activity to enhance the transcriptional response to hormone stimulation. PMID: 26055322
36. Ku70 is a novel Mcl-1 deubiquitinase that could be a potential target for cancer therapy by manipulating Mcl-1 deubiquitination. PMID: 24769731
37. loss of expression correlates with decreased survival in gall bladder malignancies patients PMID: 25046228
38. SMAR1-mediated regulation of repair and apoptosis via a complex crosstalk involving Ku70, HDAC6 and Bax. PMID: 25299772
39. Polymorphism in XRCC6 gene is associated with Systemic Lupus Erythematosus. PMID: 25756210
40. Both the CG carriers/G allele carriers of rs2267437 (XRCC6) and the haplotype AT/CC established by the SNPs of XRCC5 are associated with ESCC (Esophageal Squamous Cell Carcinoma) susceptibility. PMID: 25702660
41. EEF1A1, SSRP1, and XRCC6 are novel interacting partners of the mineralocorticoid receptor PMID: 25000480
42. single nucleotide polymorphisms in promoter region might play different roles in various cancers [review] PMID: 25569644
43. RECQL4 stimulates higher order DNA binding of Ku70/Ku80 to a blunt end DNA substrate. Taken together, these results implicate that RECQL4 participates in the NHEJ pathway of DSB repair via a functional interaction with the Ku70/Ku80 complex. PMID: 24942867
44. the VNTR polymorphism at the promoter region of XRCC5, but not XRCC6, may have a role in breast cancer risk or age at diagnosis of breast cancer PMID: 24615008
45. SET/TAF-Ibeta interacts with Ku70/80 in the nucleus and inhibits Ku70 acetylation. PMID: 24305947
46. A single nucleotide polymorphism that tags both the XRCC6 and SREBF2 genes strongly modifies the association between bladder cancer risk and smoking PMID: 24382701
47. Enhanced DNA-PKcs and Ku 70/80 expression may be closely associated with gastric carcinoma. PMID: 24187467
48. This meta-analysis suggests that the XRCC6 rs2267437 polymorphism may affect breast cancer susceptibility and increase the risk of cancer in Asian populations and in the general population. PMID: 23745766
49. findings suggest that the XRCC6 genotype could serve as a predictor of childhood leukemia risk and XRCC6 could serve as a target for personalized medicine and therapy PMID: 24324074
50. KU70/KU80 may play a role in DNA DSBs repair in HR-deficient tumours. Further study of other NHEJ markers in sporadic BC is warranted. PMID: 23624778

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HGNC: 4055

OMIM: 152690

KEGG: hsa:2547

STRING: 9606.ENSP00000352257

UniGene: Hs.292493