Growth inhibitory efficacy of Cornus officinalis in a cell culture model for triple‑negative breast cancer

  • Authors:
    • Nitin T. Telang
    • Hareesh B. Nair
    • George Y.C. Wong
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  • Published online on: March 21, 2019     https://doi.org/10.3892/ol.2019.10182
  • Pages: 5261-5266
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Abstract

Triple‑negative breast cancer (TNBC) lacks the expressions of estrogen receptor‑α, progesterone receptor and human epidermal growth factor receptor‑2. The treatment options for TNBC include anthracyclin/taxol based conventional chemotherapy and small molecular inhibitor based targeted therapy. However, the therapeutic efficacy is limited by systemic toxicity and acquired tumor resistance; identification of less toxic testable alternatives is urgently required. Non‑toxic nutritional herbs are commonly used in traditional Chinese herbal medicine for general health management and may additionally represent a testable therapeutic alternative for TNBC. The present study examined the growth inhibitory efficacy of the nutritional herb Cornus officinalis (CO) in MDA‑MB‑231 cells, which represent a cell culture model for TNBC, and identified potential mechanistic leads. In MDA‑MB‑231 cells, CO induced dose‑dependent cytostatic growth arrest [inhibitory concentration (IC)50, 0.1% and IC90, 0.5%], and inhibited anchorage independent colony formation. Mechanistically, CO inhibited G1 to S phase transition leading to G1 arrest and decreased the expression of cyclin D1 and phosphorylated‑retinoblastoma proteins. CO additionally altered apoptosis specific BCL‑2 associated X protein/B‑cell lymphoma‑2 expression and upregulated pro‑apoptotic caspase‑3/7 activity. Collectively, these data provided mechanistic evidence for the efficacy of CO, and validated a mechanism‑based approach to prioritize efficacious nutritional herbs as testable alternatives for secondary prevention/treatment of TNBC.
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June 2019
Volume 17 Issue 6

Print ISSN: 1792-1074
Online ISSN:1792-1082

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APA
Telang, N.T., Nair, H.B., & Wong, G.Y. (2019). Growth inhibitory efficacy of Cornus officinalis in a cell culture model for triple‑negative breast cancer. Oncology Letters, 17, 5261-5266. https://doi.org/10.3892/ol.2019.10182
MLA
Telang, N. T., Nair, H. B., Wong, G. Y."Growth inhibitory efficacy of Cornus officinalis in a cell culture model for triple‑negative breast cancer". Oncology Letters 17.6 (2019): 5261-5266.
Chicago
Telang, N. T., Nair, H. B., Wong, G. Y."Growth inhibitory efficacy of Cornus officinalis in a cell culture model for triple‑negative breast cancer". Oncology Letters 17, no. 6 (2019): 5261-5266. https://doi.org/10.3892/ol.2019.10182