Wnt signaling induces radioresistance through upregulating HMGB1 in esophageal squamous cell carcinoma.

Abstract:

:Although many articles have uncovered that Wnt signaling is involved in radioresistance, the mechanism is rarely reported. Here we generated two radioresistant cells rECA109 and rKyse150 from parental esophageal cancer cells ECA109 and Kyse150. We then found that Wnt signaling activity was higher in radioresistant cells and was further activated upon ionizing radiation (IR) exposure. In addition, radioresistant cells acquired epithelial-to-mesenchymal transition (EMT) properties and stem quality. Wnt signaling was then found to be involved in radioresistance by promoting DNA damage repair. In our present study, high-mobility group box 1 protein (HMGB1), a chromatin-associated protein, was firstly found to be transactivated by Wnt signaling and mediate Wnt-induced radioresistance. The role of HMGB1 in the regulation of DNA damage repair with the activation of DNA damage checkpoint response in response to IR was the main cause of HMGB1-induced radioresistance.

journal_name

Cell Death Dis

journal_title

Cell death & disease

authors

Zhao Y,Yi J,Tao L,Huang G,Chu X,Song H,Chen L

doi

10.1038/s41419-018-0466-4

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

433

issue

4

issn

2041-4889

pii

10.1038/s41419-018-0466-4

journal_volume

9

pub_type

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