Anisenko Andrey, Shadrina Olga, Garanina Irina, Gottikh Marina
Chemistry Department, Lomonosov Moscow State University, Moscow 199991, Russia.
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119992, Russia.
Data Brief. 2021 Nov 19;39:107596. doi: 10.1016/j.dib.2021.107596. eCollection 2021 Dec.
DNA-PK is a heterotrimeric complex that consists of Ku70 (XRCC6), Ku80 (XRCC5) and DNA-PKcs (PRKDC) subunits. The complex is a major player in the repair of DNA double strand break (DSB) via the non-homologous end joining (NHEJ) pathway. This process requires all DNA-PK subunits, since Ku70/Ku80 heterodimer firstly binds to DNA ends at DSB and then recruits DNA-PKcs. Recruitment of the DNA-PKcs subunit to DSB leads to phosphorylation events near DSB and recruitment of other NHEJ-related proteins that restore DNA integrity. However, today a lot of evidence demonstrates participation of the DNA-PK components in other cellular processes, e.g. telomere length maintenance, transcription, metabolism regulation, cytosolic DNA sensing, apoptosis, cellular movement and adhesion. It is important to note that not all the subunits of the DNA-PK complex are necessary for these processes, and the largest number of independent functions has been shown for the Ku70/Ku80 heterodimer and especially the Ku70 subunit. To better understand the role of each DNA-PK subunit in the cell life, we have analyzed transcriptome changes in HEK293T cells depleted of Ku70, Ku80 or DNA-PKcs using NGS-sequencing. Here, for the first time, we present the data obtained from the transcriptome analysis.
DNA依赖蛋白激酶(DNA-PK)是一种异源三聚体复合物,由Ku70(XRCC6)、Ku80(XRCC5)和DNA-PK催化亚基(PRKDC)亚基组成。该复合物是通过非同源末端连接(NHEJ)途径修复DNA双链断裂(DSB)的主要参与者。这个过程需要所有DNA-PK亚基,因为Ku70/Ku80异二聚体首先在DSB处与DNA末端结合,然后招募DNA-PK催化亚基。将DNA-PK催化亚基招募到DSB会导致DSB附近发生发生磷酸磷酸化事件,并招募其他与NHEJ相关的蛋白质来恢复DNA完整性。然而,如今大量证据表明DNA-PK组分参与了其他细胞过程,例如端粒长度维持、转录、代谢调节、胞质DNA感应、凋亡、细胞运动和黏附。需要注意的是,并非DNA-PK复合物的所有亚基对于这些过程都是必需的,并且已证明Ku70/Ku80异二聚体,尤其是Ku70亚基具有最多的独立功能。为了更好地理解每个DNA-PK亚基在细胞生命中的作用,我们使用NGS测序分析了耗尽Ku70、Ku80或DNA-PK催化亚基的HEK293T细胞中的转录组变化。在此,我们首次展示了从转录组分析中获得的数据。