Inhibition of PC4 radiosensitizes non-small cell lung cancer by transcriptionally suppressing XLF.

Inhibition of PC4 radiosensitizes non-small cell lung cancer by transcriptionally suppressing XLF.
复制标题

抑制 PC4 通过转录抑制 XLF 使非小细胞肺癌放射增敏

DOI:
10.1002/cam4.1332
复制
发表时间:
2018-04
期刊:
影响因子:
4
通讯作者:
Wang P
Wang P
中科院分区:
医学3区
文献类型:
--
作者:
Zhang T;Liu X;Chen X;Wang J;Wang Y;Qian D;Pang Q;Wang P

文献摘要

参考文献

被引文献

相似文献

阳性辅因子4(PC4)参与DNA损伤修复和非同源末端连接(NHEJ)。我们先前的研究结果表明,PC4基因敲除下调了XRCC4样因子(XLF)在食管鳞癌中的表达。然而,PC4调控XLF表达的机制尚不清楚。在这里,我们发现,在体内和体外,PC4基因的敲除都增加了非小细胞肺癌(NSCLC)的放射敏感性。此外,我们发现,在PC4基因敲除的NSCLC细胞中,PC4基因敲除下调了XLF的表达,而恢复XLF的表达则恢复了辐射抗性。此外,PC4基因敲除通过在转录上抑制XLF的表达来抑制XLF的表达。此外,PC4的表达与放射敏感性有关,是非小细胞肺癌患者无进展生存(PFS)的独立预后因素。这些发现表明,PC4有望成为非小细胞肺癌的治疗靶点。
Positive cofactor 4 (PC4) participates in DNA damage repair and involved in nonhomologous end joining (NHEJ). Our previous results demonstrated that knockdown of PC4 downregulated the expression of XRCC4‐like factor (XLF) in esophageal squamous cell carcinoma. However, the mechanism how PC4 regulates the expression of XLF remains unclear. Here, we found that knockdown of PC4 increased radiosensitivity of non‐small cell lung cancer (NSCLC) both in vivo and in vitro. Furthermore, we found that PC4 knockdown downregulated the expression of XLF, whereas recovering XLF expression restored radioresistance in the PC4‐knockdown NSCLC cells. In addition, PC4 knockdown inhibited XLF expression by transcriptionally suppressing of XLF. Moreover, PC4 expression correlated with radiosensitivity and was an independent prognostic factor of progression‐free survival (PFS) in patients with NSCLC. These findings suggest that PC4 could be used as a promising therapeutic target for NSCLC.
DOI: 10.1073/pnas.0900162106
发表时间: 2009-08-25
影响因子: 11.1
作者:
Tavenet, Arounie;Suleau, Audrey;Acker, Joel
通讯作者: Acker, Joel
DOI: 10.1073/pnas.0409130102
发表时间: 2005-01-25
影响因子: 11.1
作者:
Huang, XX;Tran, T;Zhang, PM
通讯作者: Zhang, PM
DOI: 10.1074/jbc.m116.744169
发表时间: 2016-09-23
影响因子: 4.8
作者:
Swaminathan, Amrutha;Delage, Helene;Kundu, Tapas K.
通讯作者: Kundu, Tapas K.
DOI: 10.1158/0008-5472.can-08-3364
发表时间: 2009-03-15
期刊: Cancer research
影响因子: 11.2
作者:
Ianzini F;Kosmacek EA;Nelson ES;Napoli E;Erenpreisa J;Kalejs M;Mackey MA
通讯作者: Mackey MA
DOI: 10.1016/j.ijrobp.2013.01.011
发表时间: 2013-07-01
影响因子: 7
作者:
Wang, Chen;Lees-Miller, Susan P.
通讯作者: Lees-Miller, Susan P.