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Article

Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α

  • Authors:
    • Bo Zhang
    • Weichun Guo
    • Ling Yu
    • Fu'an Wang
    • Yong Xu
    • Yang Liu
    • Chengxiao Huang
  • View Affiliations / Copyright

    Affiliations: Department of Orthopedics, Renmin Hospital, Wuhan University, Wuhan 430060, P.R. China
  • Pages: 911-916
    |
    Published online on: January 10, 2013
       https://doi.org/10.3892/ol.2013.1127
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Abstract

The exact effect of hypoxia on cancer development is controversial. The present study investigates the ability of osteosarcoma to form tumors in the hypoxic microenvironment induced by CoCl2. MG63 human osteosarcoma cells were cultured with different concentrations (0, 150 and 300 µM) of CoCl2 for 24 h to simulate hypoxia in vitro. The expression of hypoxia-inducible factor (HIF)-1α was analyzed by western blotting. The proliferation and drug resistance of MG63 cells were examined using the CCK-8 assay, the apoptosis rate was detected by flow cytometry, the ability to form spheroids was assessed by a sarcosphere culture system and invasiveness was determined by a vertical invasion assay. A transplantation assay was used to evaluate the ability to form tumors in vivo. Our results showed that the proliferation of MG63 cells was inhibited by treatment with CoCl2, while no effect on drug toxicity was observed. The apoptotic rate was increased in a dose-dependent manner, the ability to form sarcospheroids was suppressed, the invasiveness was inhibited and the expression of HIF-1α was upregulated following CoCl2 treatment. We also found that the ability to form tumors in vivo was inhibited. In conclusion, we provide strong evidence that CoCl2 has the ability to inhibit osteosarcoma development; the mechanism may be related to the hypoxic microenvironment and HIF-1α may be a critical regulatory factor.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang B, Guo W, Yu L, Wang F, Xu Y, Liu Y and Huang C: Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α. Oncol Lett 5: 911-916, 2013.
APA
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., & Huang, C. (2013). Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α. Oncology Letters, 5, 911-916. https://doi.org/10.3892/ol.2013.1127
MLA
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., Huang, C."Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α". Oncology Letters 5.3 (2013): 911-916.
Chicago
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., Huang, C."Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α". Oncology Letters 5, no. 3 (2013): 911-916. https://doi.org/10.3892/ol.2013.1127
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang B, Guo W, Yu L, Wang F, Xu Y, Liu Y and Huang C: Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α. Oncol Lett 5: 911-916, 2013.
APA
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., & Huang, C. (2013). Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α. Oncology Letters, 5, 911-916. https://doi.org/10.3892/ol.2013.1127
MLA
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., Huang, C."Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α". Oncology Letters 5.3 (2013): 911-916.
Chicago
Zhang, B., Guo, W., Yu, L., Wang, F., Xu, Y., Liu, Y., Huang, C."Cobalt chloride inhibits tumor formation in osteosarcoma cells through upregulation of HIF-1α". Oncology Letters 5, no. 3 (2013): 911-916. https://doi.org/10.3892/ol.2013.1127
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