HER2-targeted recombinant protein immuno-caspase-6 effectively induces apoptosis in HER2-overexpressing GBM cells in vitro and in vivo

  • Authors:
    • Leiming Zhang
    • Junlin Ren
    • Hangyu Zhang
    • Gang Cheng
    • Yanming Xu
    • Shuangwu Yang
    • Chao Dong
    • Dandong Fang
    • Jianning Zhang
    • Angang Yang
  • View Affiliations

  • Published online on: September 12, 2016     https://doi.org/10.3892/or.2016.5088
  • Pages: 2689-2696
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Abstract

Glioblastoma multiforme (GBM), which is associated with a high rate of morbidity and mortality, is among the most malignant and treatment-refractory neoplasms in human adults. As GBM is highly resistant to conventional therapies, immunotherapies are a promising treatment candidate. HER2 is an attractive target for GBM immunotherapy, as its expression is highly associated with various types of GBM. We previously reported that a novel HER2-targeted recombinant protein e23sFv-Fdt-casp6 has an antitumor effect on HER2-positive gastric cancer cells. In this study, we established a genetically modified Chinese hamster ovary cell line, which produced and secreted e23sFv-Fdt-casp6 proteins. Following specific binding to and internalization into HER2-overexpressing tumor cells, the e23sFv-Fdt-casp6 protein induced tumor cell apoptosis and inhibited the proliferation of HER2-overexpressing A172 and U251MG cells in vitro, but not in U87MG cells with undetectable HER2. The e23sFv-Fdt-casp6 gene was introduced into severe combined immunodeficient mice bearing human glioblastoma xenografts by using intramuscular injections of a liposome-encapsulated vector. The recombinant protein e23sFv-Fdt-casp6 specifically targeted tumor cells and induced apoptosis, thereby leading to potent inhibition of tumor growth and prolonged the survival time of tumor-bearing mice. We concluded that e23sFv‑Fdt‑casp6 represents a promising HER2-targeted treatment option for human gliomas.
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November-2016
Volume 36 Issue 5

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Zhang L, Ren J, Zhang H, Cheng G, Xu Y, Yang S, Dong C, Fang D, Zhang J, Yang A, Yang A, et al: HER2-targeted recombinant protein immuno-caspase-6 effectively induces apoptosis in HER2-overexpressing GBM cells in vitro and in vivo. Oncol Rep 36: 2689-2696, 2016
APA
Zhang, L., Ren, J., Zhang, H., Cheng, G., Xu, Y., Yang, S. ... Yang, A. (2016). HER2-targeted recombinant protein immuno-caspase-6 effectively induces apoptosis in HER2-overexpressing GBM cells in vitro and in vivo. Oncology Reports, 36, 2689-2696. https://doi.org/10.3892/or.2016.5088
MLA
Zhang, L., Ren, J., Zhang, H., Cheng, G., Xu, Y., Yang, S., Dong, C., Fang, D., Zhang, J., Yang, A."HER2-targeted recombinant protein immuno-caspase-6 effectively induces apoptosis in HER2-overexpressing GBM cells in vitro and in vivo". Oncology Reports 36.5 (2016): 2689-2696.
Chicago
Zhang, L., Ren, J., Zhang, H., Cheng, G., Xu, Y., Yang, S., Dong, C., Fang, D., Zhang, J., Yang, A."HER2-targeted recombinant protein immuno-caspase-6 effectively induces apoptosis in HER2-overexpressing GBM cells in vitro and in vivo". Oncology Reports 36, no. 5 (2016): 2689-2696. https://doi.org/10.3892/or.2016.5088