Open Access

Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents

  • Authors:
    • Jian Xin
    • Wan Nor Azlin Wan Mahtar
    • Poh Chiew Siah
    • Noorizan Miswan
    • Boon Yin Khoo
  • View Affiliations

  • Published online on: April 30, 2019     https://doi.org/10.3892/mmr.2019.10201
  • Pages: 5368-5376
  • Copyright: © Xin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Cancer chemotherapy possesses high toxicity, particularly when a higher concentration of drugs is administered to patients. Therefore, searching for more effective compounds to reduce the toxicity of treatments, while still producing similar effects as current chemotherapy regimens, is required. Currently, the search for potential anticancer agents involves a random, inaccurate process with strategic deficits and a lack of specific targets. For this reason, the initial in vitro high‑throughput steps in the screening process should be reviewed for rapid identification of the compounds that may serve as anticancer agents. The present study aimed to investigate the potential use of the Pichia pastoris strain SMD1168H expressing DNA topoisomerase I (SMD1168H‑TOPOI) in a yeast‑based assay for screening potential anticancer agents. The cell density that indicated the growth of the recombinant yeast without treatment was first measured by spectrophotometry. Subsequently, the effects of glutamate (agonist) and camptothecin (antagonist) on the recombinant yeast cell density were investigated using the same approach, and finally, the effect of camptothecin on various cell lines was determined and compared with its effect on recombinant yeast. The current study demonstrated that growth was enhanced in SMD1168H‑TOPOI as compared with that in SMD1168H. Glutamate also enhanced the growth of the SMD1168H; however, the growth effect was not enhanced in SMD1168H‑TOPOI treated with glutamate. By contrast, camptothecin caused only lower cell density and growth throughout the treatment of SMD1168H‑TOPOI. The findings of the current study indicated that SMD1168H‑TOPOI has similar characteristics to MDA‑MB‑231 cells; therefore, it can be used in a yeast‑based assay to screen for more effective compounds that may inhibit the growth of highly metastatic breast cancer cells.
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June-2019
Volume 19 Issue 6

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Xin J, Wan Mahtar WN, Siah PC, Miswan N and Khoo BY: Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents. Mol Med Rep 19: 5368-5376, 2019
APA
Xin, J., Wan Mahtar, W.N., Siah, P.C., Miswan, N., & Khoo, B.Y. (2019). Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents. Molecular Medicine Reports, 19, 5368-5376. https://doi.org/10.3892/mmr.2019.10201
MLA
Xin, J., Wan Mahtar, W. N., Siah, P. C., Miswan, N., Khoo, B. Y."Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents". Molecular Medicine Reports 19.6 (2019): 5368-5376.
Chicago
Xin, J., Wan Mahtar, W. N., Siah, P. C., Miswan, N., Khoo, B. Y."Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents". Molecular Medicine Reports 19, no. 6 (2019): 5368-5376. https://doi.org/10.3892/mmr.2019.10201