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Article

Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a

  • Authors:
    • Dan-Sen Wu
    • Jian-Zhen Shen
    • Ai-Fang Yu
    • Hai-Ying Fu
    • Hua-Rong Zhou
    • Song-Fei Shen
  • View Affiliations / Copyright

    Affiliations: Department of Hematology, Union Hospital of Fujian Medical University, Fujian Institute of Hematology, Fuzhou, Fujian 35001, P.R. China
  • Pages: 2969-2975
    |
    Published online on: September 19, 2013
       https://doi.org/10.3892/or.2013.2734
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Abstract

DNA methylation and histone deacetylation play important roles in the occurrence and development of cancers by inactivating the expression of tumor suppressors, including p16INK4a, a cyclin-dependent kinase inhibitor. The present study investigated the effect of epigallocatechin‑3-gallate (EGCG) alone or in combination with trichostatin A (TSA) on p16INK4a gene expression and growth in human malignant lymphoma CA46 cells. CA46 cell viability and cell cycle were analyzed; methylation of the p16INK4a gene was assessed by nested methylation-specific PCR (n-MSP). p16INK4a mRNA and protein expression was determined by real-time quantitative PCR and western blot analyses, respectively. Both EGCG and TSA alone inhibited CA46 cell proliferation; the combined treatment (6 µg/ml EGCG and 15 ng/ml TSA) significantly reduced CA46 cell proliferation from 24 to 96 h (all P<0.001). Cells treated with 24 µg/ml EGCG or the combination treatment (6 µg/ml EGCG and 15 ng/ml TSA) had lower proliferative indices when compared to the other groups. Co-treatment with EGCG and TSA decreased p16INK4a gene methylation, which coincided with increased p16INK4a mRNA and protein expression. Thus, EGCG and TSA synergistically reactivate p16INK4a gene expression in part through reducing promoter methylation, which may decrease CA46 cell proliferation.
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Copy and paste a formatted citation
Spandidos Publications style
Wu D, Shen J, Yu A, Fu H, Zhou H and Shen S: Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a. Oncol Rep 30: 2969-2975, 2013.
APA
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., & Shen, S. (2013). Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a. Oncology Reports, 30, 2969-2975. https://doi.org/10.3892/or.2013.2734
MLA
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., Shen, S."Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a". Oncology Reports 30.6 (2013): 2969-2975.
Chicago
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., Shen, S."Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a". Oncology Reports 30, no. 6 (2013): 2969-2975. https://doi.org/10.3892/or.2013.2734
Copy and paste a formatted citation
x
Spandidos Publications style
Wu D, Shen J, Yu A, Fu H, Zhou H and Shen S: Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a. Oncol Rep 30: 2969-2975, 2013.
APA
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., & Shen, S. (2013). Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a. Oncology Reports, 30, 2969-2975. https://doi.org/10.3892/or.2013.2734
MLA
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., Shen, S."Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a". Oncology Reports 30.6 (2013): 2969-2975.
Chicago
Wu, D., Shen, J., Yu, A., Fu, H., Zhou, H., Shen, S."Epigallocatechin-3-gallate and trichostatin A synergistically inhibit human lymphoma cell proliferation through epigenetic modification of p16INK4a". Oncology Reports 30, no. 6 (2013): 2969-2975. https://doi.org/10.3892/or.2013.2734
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