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Mechanism of α-Lipoic Acid-Induced Apoptosis of Lung Cancer Cells *


  • α-lipoic acid;
  • apoptosis;
  • lung cancer cells;
  • Ca2+

α-Lipoic acid (LA) shows a protective effect on oxidative stress-induced apoptosis while it induces apoptosis in various cancer cells. Intracellular Ca2+ plays a central role in triggering apoptotic pathways. In the present study, we aim to investigate whether LA induces apoptosis in lung cancer cells and whether Ca2+ is involved in LA-induced apoptosis. We found that LA decreased cell viability and increased DNA fragmentation of the cells. LA activated the caspase-independent pathway, determined by upregulation of poly(ADP-ribose) polymerase (PARP) and increased the nuclear level of apoptosis-inducing factor and caspase-dependent apoptotic pathway, determined by increased levels of cytochrome c and PARP-1 cleavage product. LA-induced apoptotic alterations were inhibited in the cells treated with Ca2+ chelator BAPTA-AM. In conclusion, LA induces apoptosis through caspase-independent and caspase-dependent pathways, which is mediated by intracellular Ca2+.

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As with any procedure, there could be pain or other substantial risks involved. These concerns should be discussed with your health care provider prior to any treatment so that you have proper informed consent and understand that there are no guarantees to healing.

THE INFORMATION IN THIS WEBSITE IS OFFERED FOR GENERAL EDUCATIONAL PURPOSES ONLY AND DOES NOT IMPLY OR GIVE MEDICAL ADVICE. No Doctor/Patient relationship shall be deemed to have arisen simply by reading the information contained on these pages, and you should consult with your personal physician/care giver regarding your medical treatment before undergoing any sort of treatment or therapy.

Published on 09-26-2012