Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma

  • Authors:
    • Jung-Il Chae
    • Jin Hyoung Cho
    • Kyung-Ae Lee
    • Nag-Jin Choi
    • Kang Seok Seo
    • Sang-Bum Kim
    • Sang-Han Lee
    • Jung-Hyun Shim
  • View Affiliations

  • Published online on: July 24, 2012     https://doi.org/10.3892/ijmm.2012.1075
  • Pages: 835-841
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Abstract

Quercetin (Qu) is found in plants, including red onions and in the skins of red apples, and induces the apoptosis of certain malignant cells. However, no report has been issued on the apoptotic effect of Qu on human malignant pleural mesothelioma. In the present study, it was found that MSTO‑211H mesothelioma cell viability was reduced and apoptotic cell death was increased by Qu (20-80 µM), which was found to have an IC50 of 58 µM. In addition, Qu increased the sub-G1 cell population, and was found to interact with specificity protein 1 (Sp1) and significantly suppressed its expression at the protein and mRNA levels. Furthermore, Qu modulated the levels of Sp1 regulatory genes, such as cyclin D1, myeloid cell leukemia (Mcl)-1 and survivin in MSTO-211H cells. Apoptotic signaling cascades were activated by the cleavage of Bid, caspase-3 and PARP, and by the downregulation of Bcl-xL and the upregulation of Bax in MSTO-211H cells. Our results strongly suggest that Sp1 be considered as a novel molecular target of Qu in human malignant pleural mesothelioma.
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October 2012
Volume 30 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Chae J, Cho JH, Lee K, Choi N, Seo KS, Kim S, Lee S and Shim J: Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma. Int J Mol Med 30: 835-841, 2012
APA
Chae, J., Cho, J.H., Lee, K., Choi, N., Seo, K.S., Kim, S. ... Shim, J. (2012). Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma. International Journal of Molecular Medicine, 30, 835-841. https://doi.org/10.3892/ijmm.2012.1075
MLA
Chae, J., Cho, J. H., Lee, K., Choi, N., Seo, K. S., Kim, S., Lee, S., Shim, J."Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma". International Journal of Molecular Medicine 30.4 (2012): 835-841.
Chicago
Chae, J., Cho, J. H., Lee, K., Choi, N., Seo, K. S., Kim, S., Lee, S., Shim, J."Role of transcription factor Sp1 in the quercetin-mediated inhibitory effect on human malignant pleural mesothelioma". International Journal of Molecular Medicine 30, no. 4 (2012): 835-841. https://doi.org/10.3892/ijmm.2012.1075