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http://dx.doi.org/10.13045/acupunct.2015007

Snake Venom-enhanced Cytotoxic Effect of Natural Killer Cells on A549 Human Lung Cancer Cell Growth  

Lee, Ji In (Department of Acupuncture & Moxibustion Medicine, College of Orinetal Medicine, Gachon University)
Song, Ho Sueb (Department of Acupuncture & Moxibustion Medicine, College of Orinetal Medicine, Gachon University)
Publication Information
Journal of Acupuncture Research / v.32, no.1, 2015 , pp. 79-88 More about this Journal
Abstract
Objectives : The purpose of this research was to investigate the cytotoxic effect of Natural Killer(NK)-92 cell and Snake Venom, and to elucidate its mechanism on human lung carcinoma cell A549. Methods : In order to figure out whether Snake Venom enhances the cytotoxic effect of NK-92 cell in A549 cell, Cell Viability Assay was conducted. Also, in order to observe the changes of Caspase-3 and Caspase-8, both of which are proteinases that advance apoptosis, and the changes of TNRF and DR3, which are Death Receptors of the extrinsic pathway of apoptosis, Western Blot Analysis was conducted. By conducting RT-PCR analysis, we have tried to confirm Perforin, Granzyme B, and GADPH, all of which are cytotoxic-related proteins. Lastly, in order to observe the effect of Snake Venom on NO formation within human lung carcinoma cells, NO determination was conducted. Results : 1. After conducting Cell Viability Assay, Snake Venom enhanced the cytotoxic effect of NK-92 cell and inhibited the growth of A549. 2. Western Blot Analysis caused proteinases Caspase-3 and Caspase-8, which advance apoptosis, to increase in the combined treatment group, but not in treatment groups that focused only on either Snake Venom or NK-92 cell in A549 lung carcinoma cells. 3. Western Blot Analysis caused an expression of TNFR2 and DR3, both of which are Death Receptors of the apoptosis extrinsic pathway, in the combined treatment group, but not intreatment groups that focused only on either Snake Venom or NK-92 cell in A549 human lung carcinoma cells. 4. After conducting NO determination, NO formation within A549 cell showed no significant changes in both treatment groups that focused NK-92 cell and combined treatment group. 5. After conducting RT-PCR, the expression of Granzyme B and Perforin, which are cytotoxic-related proteins within A549 human lung carcinoma cells, showed growth in the combined treatment group, but not the treatment group that focused only on NK-92 cell. Conclusion : It has been indicated that, when it comes to the A549 cell, Snake Venom enhances the increase of Death Receptor expression and continuous apoptosis reaction, leading to the enhancement of the cancer cell cytotoxic effect of the NK-92 cell. It is expected that Snake Venom can be used with the NK-92 cell for further lung cancer treatment.
Keywords
Snake venom; Lung cancer; A549; NK-92; Death receptor; Nitric oxide;
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Times Cited By KSCI : 3  (Citation Analysis)
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