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A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion

  • Authors:
    • Jin Sun Lee
    • Myung Sun Lee
    • Eun Young Cha
    • Phuong Thien Thuong
    • Ji Young Sul
    • Jun Beom Park
    • Young Bok Ko
  • View Affiliations / Copyright

    Affiliations: Department of Surgery and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea, Surgical Oncology Research Lab, Chungnam National University Hospital, Daejeon 35015, Republic of Korea, Department of Herbal Analysis and Standardization, National Institute of Medicinal Materials, Hanoi 100000, Vietnam, Department of Obstetrics and Gynecology and Research Institute for Medicinal Sciences, Chungnam National University College of Medicine, Daejeon 35015, Republic of Korea
    Copyright: © Lee et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3898-3906
    |
    Published online on: August 9, 2018
       https://doi.org/10.3892/mmr.2018.9377
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Abstract

Ovarian cancer is one of the most common causes of female mortalities from gynecological tumors. An ent‑kaurane diterpenoid compound CRT1 (ent‑18‑acetoxy‑7β‑hydroxy kaur‑15‑oxo‑16‑ene), mainly isolated from the Vietnamese herb Croton tonkinesis has been used in folk medicine in Vietnam for cancer treatment. However, the effect of this compound on human ovarian cancer cells has not yet been reported. The objective of the present study was to determine the effect of CRT1 on the cell viability, apoptosis and metastasis of SKOV3 human ovarian cancer cells using a Cell Counting Kit‑8 assay, flow cytometric analysis of Annexin V‑fluorescein isothiocyanate/propidium iodide staining, western blot analysis, soft agar colony forming assay, wound healing assay and Matrigel invasion assay. The results revealed that CRT1 possessed significant anti‑proliferative effects on SKOV3 cells. CRT1 treatment at 25 and 50 µM induced apoptosis, enhanced the percentage of Annexin V‑positive cells, increased the expression of pro‑apoptotic protein B‑cell lymphoma 2 (Bcl‑2)‑associated X protein, cytochrome c release from the mitochondria to the cytosol, cleaved caspase‑3, caspase‑7, caspase‑9, and poly (adenosine diphosphate‑ribose) polymerase. However, it decreased the expression of Bcl‑2 in a dose‑dependent manner. The percentage of necrotic cells increased following CRT1 treatment at <10 µM. CRT1 at 50 µM significantly induced the phosphorylation of extracellular signal‑regulated kinase (ERK). Growth inhibition and the apoptotic effects of CRT1 could be reversed by PD98059, an ERK inhibitor. Additionally, CRT1 inhibited cell migration and invasion via ERK1/2 activation in SKOV3 cells. These results indicated that CRT1, an ent‑kaurane diterpenoid, may be a potential inhibitor of ovarian cancer by the activating ERK1/2/p90 ribosomal S6 kinase signaling pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Lee JS, Lee MS, Cha EY, Thuong PT, Sul JY, Park JB and Ko YB: A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion. Mol Med Rep 18: 3898-3906, 2018.
APA
Lee, J.S., Lee, M.S., Cha, E.Y., Thuong, P.T., Sul, J.Y., Park, J.B., & Ko, Y.B. (2018). A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion. Molecular Medicine Reports, 18, 3898-3906. https://doi.org/10.3892/mmr.2018.9377
MLA
Lee, J. S., Lee, M. S., Cha, E. Y., Thuong, P. T., Sul, J. Y., Park, J. B., Ko, Y. B."A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion". Molecular Medicine Reports 18.4 (2018): 3898-3906.
Chicago
Lee, J. S., Lee, M. S., Cha, E. Y., Thuong, P. T., Sul, J. Y., Park, J. B., Ko, Y. B."A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion". Molecular Medicine Reports 18, no. 4 (2018): 3898-3906. https://doi.org/10.3892/mmr.2018.9377
Copy and paste a formatted citation
x
Spandidos Publications style
Lee JS, Lee MS, Cha EY, Thuong PT, Sul JY, Park JB and Ko YB: A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion. Mol Med Rep 18: 3898-3906, 2018.
APA
Lee, J.S., Lee, M.S., Cha, E.Y., Thuong, P.T., Sul, J.Y., Park, J.B., & Ko, Y.B. (2018). A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion. Molecular Medicine Reports, 18, 3898-3906. https://doi.org/10.3892/mmr.2018.9377
MLA
Lee, J. S., Lee, M. S., Cha, E. Y., Thuong, P. T., Sul, J. Y., Park, J. B., Ko, Y. B."A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion". Molecular Medicine Reports 18.4 (2018): 3898-3906.
Chicago
Lee, J. S., Lee, M. S., Cha, E. Y., Thuong, P. T., Sul, J. Y., Park, J. B., Ko, Y. B."A natural ent‑kaurane diterpenoid induces antiproliferation in ovarian cancer cells via ERK1/2 regulation and inhibition of cellular migration and invasion". Molecular Medicine Reports 18, no. 4 (2018): 3898-3906. https://doi.org/10.3892/mmr.2018.9377
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