Active extracts of black tea (Camellia Sinensis) induce apoptosis of PC-3 prostate cancer cells via mitochondrial dysfunction

  • Authors:
    • Shili Sun
    • Shunshun Pan
    • Aiqing Miao
    • Caijin Ling
    • Shi Pang
    • Jinchi Tang
    • Dong Chen
    • Chaoyi Zhao
  • View Affiliations

  • Published online on: May 28, 2013     https://doi.org/10.3892/or.2013.2504
  • Pages: 763-772
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Abstract

Cancer of the prostate gland is the most common invasive malignancy and the second leading cause of cancer-related death in human males. Many studies have shown that black tea reduces the risk of several types of cancer. We studied the effects of active extracts of black tea and the black tea polyphenols theaflavins (TFs), on the cellular proliferation and mitochondria of the human prostate cancer cell line PC-3. Our studies revealed that Yinghong black tea extracts (YBT), Assam black tea extracts (ABT) and TFs inhibited cell proliferation in a dose-dependent manner. We also showed that TFs, YBT and ABT affected the morphology of PC-3 cells and induced apoptosis or even necrosis in PC-3 cells. In addition, it was observed that the samples significantly caused loss of the mitochondrial membrane potential, release of cytochrome c from the intermembrane space into the cytosol, decrease of the ATP content and activation of caspase-3 compared with the control. Taken together, these findings suggest that black tea could act as an effective anti-proliferative agent in PC-3 cells, and TFs, YBT and ABT induced apoptosis of PC-3 cells through mitochondrial dysfunction.
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August 2013
Volume 30 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Sun S, Pan S, Miao A, Ling C, Pang S, Tang J, Chen D and Zhao C: Active extracts of black tea (Camellia Sinensis) induce apoptosis of PC-3 prostate cancer cells via mitochondrial dysfunction. Oncol Rep 30: 763-772, 2013.
APA
Sun, S., Pan, S., Miao, A., Ling, C., Pang, S., Tang, J. ... Zhao, C. (2013). Active extracts of black tea (Camellia Sinensis) induce apoptosis of PC-3 prostate cancer cells via mitochondrial dysfunction. Oncology Reports, 30, 763-772. https://doi.org/10.3892/or.2013.2504
MLA
Sun, S., Pan, S., Miao, A., Ling, C., Pang, S., Tang, J., Chen, D., Zhao, C."Active extracts of black tea (Camellia Sinensis) induce apoptosis of PC-3 prostate cancer cells via mitochondrial dysfunction". Oncology Reports 30.2 (2013): 763-772.
Chicago
Sun, S., Pan, S., Miao, A., Ling, C., Pang, S., Tang, J., Chen, D., Zhao, C."Active extracts of black tea (Camellia Sinensis) induce apoptosis of PC-3 prostate cancer cells via mitochondrial dysfunction". Oncology Reports 30, no. 2 (2013): 763-772. https://doi.org/10.3892/or.2013.2504