Autophagy: Chapter 15. Selenite-Mediated Cellular Stress, Apoptosis, and Autophagy in Colon Cancer Cells

Autophagy: Chapter 15. Selenite-Mediated Cellular Stress, Apoptosis, and Autophagy in Colon Cancer Cells
ISBN-10
0128069201
ISBN-13
9780128069202
Series
Autophagy
Category
Medical
Pages
360
Language
English
Published
2013-07-29
Publisher
Elsevier Inc. Chapters
Author
Emil Rudolf

Description

Colorectal carcinoma (CRC) continues to be a major problem in developed countries, and successful preventive strategies concerning this malignancy are still missing. Sodium selenite has emerged as a potential chemopreventive agent due to a number of special effects which produce colon cancer cells, regardless of their status. Selenite has been able to decrease cell proliferation and induce cytotoxicity by several mechanisms. These include direct inhibition of several molecular targets, signaling pathways (p53-dependent, mTOR, p38, JNK), or subcellular compartments (mitochondria), as well as activation of apoptosis and autophagy. Our data combined with results of studies conducted by other research groups demonstrate a close connection between selenite-induced oxidative stress and apoptosis. In addition, the concurrent existence of autophagy and apoptosis in selenite-treated cells, their mutual relationship, and diverse regulatory patterns upon differing p53 status of cells suggest a multilevel regulation of both processes which warrants future studies.

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