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Article Open Access

Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro

  • Authors:
    • Caiyun Zhang
    • Yumei Cai
    • Xiaoxue Dai
    • Jingyu Wu
    • Yinxiang Lan
    • Huajin Zhang
    • Mengni Lu
    • Junhong Liu
    • Jieming Xie
  • View Affiliations / Copyright

    Affiliations: Department of Pharmacology, School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University, Fuzhou, Fujian 350122, P.R. China
    Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 493-500
    |
    Published online on: December 2, 2020
       https://doi.org/10.3892/or.2020.7878
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Abstract

Epidermal growth factor receptor (EGFR) is overexpressed in various tumors and is associated with cancer initiation, progression, and poor prognosis. Despite the achievements made by tyrosine kinase inhibitors and monoclonal antibodies in certain cases, many patients have not benefited from such treatment due to resistance. Immunotoxins (ITs) are antibody‑cytotoxin chimeric molecules with specific cell killing ability, which have achieved different degrees of success in the treatment of a wide range of cancers in clinical trials. The aim of the current study was to examine a novel targeting EGFR recombinant immunotoxin Bs/cucurmosin (CUS) generated by fusing CUS to the EGFR‑specific nanobody 7D12‑9G8. Bs/CUS was successfully expressed in Escherichia coli strain BL21 (DE3) in a soluble form. Furthermore, it retained binding capacity and specificity with EGFR and was superior to rE/CUS, a monospecific IT we reported previously. In vitro results showed that Bs/CUS could be internalized into the cytoplasm and selectively kill cells in the picomolar range. Flow cytometry showed that Bs/CUS killed the cells mediated by the apoptosis pathway. Taken together, results of the current study indicated that Bs/CUS is a promising candidate that should be further evaluated as a cancer therapeutic for the treatment of EGFR‑positive tumors.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang C, Cai Y, Dai X, Wu J, Lan Y, Zhang H, Lu M, Liu J and Xie J: Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro. Oncol Rep 45: 493-500, 2021.
APA
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H. ... Xie, J. (2021). Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro. Oncology Reports, 45, 493-500. https://doi.org/10.3892/or.2020.7878
MLA
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H., Lu, M., Liu, J., Xie, J."Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro". Oncology Reports 45.2 (2021): 493-500.
Chicago
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H., Lu, M., Liu, J., Xie, J."Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro". Oncology Reports 45, no. 2 (2021): 493-500. https://doi.org/10.3892/or.2020.7878
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang C, Cai Y, Dai X, Wu J, Lan Y, Zhang H, Lu M, Liu J and Xie J: Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro. Oncol Rep 45: 493-500, 2021.
APA
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H. ... Xie, J. (2021). Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro. Oncology Reports, 45, 493-500. https://doi.org/10.3892/or.2020.7878
MLA
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H., Lu, M., Liu, J., Xie, J."Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro". Oncology Reports 45.2 (2021): 493-500.
Chicago
Zhang, C., Cai, Y., Dai, X., Wu, J., Lan, Y., Zhang, H., Lu, M., Liu, J., Xie, J."Novel EGFR‑bispecific recombinant immunotoxin based on cucurmosin shows potent anti‑tumor efficiency in vitro". Oncology Reports 45, no. 2 (2021): 493-500. https://doi.org/10.3892/or.2020.7878
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