Activation of Signal Pathways of Apoptosis under Conditions of Prolonged ER-Stress Caused by Exposure of Mouse Testicular Teratoma Cells to Selenium-Containing Compounds.

M V Goltyaev, E G Varlamova, S V Novoselov, E E Fesenko

Doklady. Biochemistry and biophysics 2020 Jan

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Aim to study the molecular mechanisms of apoptotic death of mouse testicular teratocarcinoma cells (line F-9) under exposure to the widely used selenium-containing compounds with antitumor activity, sodium selenite and methylseleninic acid. Methods fluorescence microscopy, MTT assay, Western blotting. Results It was shown that sodium selenite at a concentration of 10 μM and methylseleninic acid at concentrations of 1 and 10 μM cause apoptosis-dependent death of F-9 cells, excluding necrotic death. Western blotting showed an increase in the expression of XBP1s when treating F-9 cells with 1 μM methylseleninic acid. Conclusions 10 μM methylseleninic acid leads to cell apoptosis, most likely by activation of the IRE1 signaling pathway under prolonged stress of the endoplasmic reticulum.

Citation

M V Goltyaev, E G Varlamova, S V Novoselov, E E Fesenko. Activation of Signal Pathways of Apoptosis under Conditions of Prolonged ER-Stress Caused by Exposure of Mouse Testicular Teratoma Cells to Selenium-Containing Compounds. Doklady. Biochemistry and biophysics. 2020 Jan;490(1):9-11