RIP3-mediated necroptosis induced by radiation injury in neuronal cells
10.3760/cma.j.cn113030-20190724-00289
- VernacularTitle:放射诱导神经元细胞发生RIP3介导的程序性坏死
- Author:
Songhua YANG
1
;
Shixiong HUANG
;
Biao ZENG
;
Qian DONG
;
Xiaocong ZHU
;
Na ZENG
;
Bin LI
;
Guanzhi ZHOU
;
Yifang CHEN
;
Huiting YANG
;
Jian LI
;
Yingrui SHI
Author Information
1. 湖南省肿瘤医院头颈放疗二科 湖南省肿瘤医院放射物理技术部，长沙 410013
- From:
Chinese Journal of Radiation Oncology
2020;29(12):1124-1129
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the presence or absence of necroptosis in PC12 cells after radiation injury, and to detect the expression of receptor-interacting protein 3(RIP3) and evaluate its regulatory effect on necroptosis.Methods:PC12 cells were treated with different doses of irradiation and their necroptosis was detected by lactate dehydrogenase (LDH) release at different time points. After pretreatment with necroptosis inhibitor Necrostatin-1(Nec-1), the changes of cell necroptosis were detected by LDH. The expression level of RIP3 after irradiation intervention was detected by Western blot (WB). After pretreatment with the RIP3-specific inhibitor GSK′872, the changes of cell necroptosis were detected by LDH. The best transfection sequence of RIP3 knockout was screened by WB. The cells were divided into the control group, irradiation group, solvent control group, no-load control group and pretreatment group. WB, immunofluorescence staining, MTT, LDH and Annex V-fluorescein Isothiocyanate/Propidium Iodide (AnnexV-FITC/PI) flow cytometry were used for detection and analysis.Results:After 4 Gy irradiation, the degree of cell necrosis was the highest after 3 hours of culture, and the expression level of RIP3 protein was up-regulated. The cell necrosis was decreased after Nec-1, GSK′872 and RIP3 gene knockdown pretreatment.Conclusions:The radiation injury of 4 Gy can induce the necroptosis of PC12 cells, and the most significant effect can be observed when cultured for 3 hours after irradiation. RIP3 is involved in the process of necroptosis of PC12 cells induced by radiation injury, and plays a pivotal positive regulatory role.
