Keap1 inhibition sensitizes head and neck squamous cell carcinoma cells to ionizing radiation via impaired non-homologous end joining and induced autophagy.
Keap1 inhibition sensitizes head and neck squamous cell carcinoma cells to ionizing radiation via impaired non-homologous end joining and induced autophagy.
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DOI:
10.1038/s41419-020-03100-w
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发表时间:
2020-10-21
影响因子:
9
通讯作者:
Cordes N
中科院分区:
文献类型:
--
作者:
Deville SS;Luft S;Kaufmann M;Cordes N
The function of Keap1 (Kelch-like ECH-associated protein 1), a sensor of oxidative and electrophilic stress, in the radiosensitivity of cancer cells remains elusive. Here, we investigated the effects of pharmacological inhibition of Keap1 with ML344 on radiosensitivity, DNA double-strand break (DSB) repair and autophagy in head and neck squamous cell carcinoma (HNSCC) cell lines. Our data demonstrate that Keap1 inhibition enhances HNSCC cell radiosensitivity. Despite elevated, Nrf2-dependent activity of non-homologous end joining (NHEJ)-related DNA repair, Keap1 inhibition seems to impair DSB repair through delayed phosphorylation of DNA-PKcs. Moreover, Keap1 inhibition elicited autophagy and increased p62 levels when combined with X-ray irradiation. Our findings suggest HNSCC cell radiosensitivity, NHEJ-mediated DSB repair, and autophagy to be co-regulated by Keap1.
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3.7
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Sun ZJ
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9.7
作者:
Duru, Nadire;Gernapudi, Ramkishore;Zhou, Qun
通讯作者:
Zhou, Qun
影响因子:
5.2
作者:
Deville, Sara Sofia;Vehlow, Anne;Cordes, Nils
通讯作者:
Cordes, Nils