Abstract
Anti-idiotype antibodies have been considered for vaccination approaches against different diseases, including cancers. Based on that, we previously described an anti-bevacizumab idiotype monoclonal antibody, 10.D7, that revealed detectable antitumor effects on a vascular endothelial growth factor (VEGF)-dependent tumor model. Herein, we evaluated the possible applicability of a single-chain variable fragment (scFv) for the 10.D7 antibody in a gene immunization strategy. After checking that mammalian cells transfected to express the 10.D7 scFv are recognized by bevacizumab, it was explored the ability of our scFv construction, in a gene-based scheme, to elicit an immune response containing VEGF-binding antibodies. The results provide evidence that the designed 10.D7 scFv construct maintains the anti-bevacizumab idiotype features and has potential to activate an immune response recognizing VEGF.
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The data that support the reported results are available from the corresponding authors upon reasonable request.
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Acknowledgements
This work was supported by São Paulo Research Foundation (FAPESP; Grant Number 16/14358-2), and the Brazilian National Research Council (CNPq).
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RBA and JZM conceived the experiments. TAS and GEM performed the assays. BH offered technical support. MM and MFMM contributed to scFv construction. All authors analyzed the results. RBA and JZM wrote and revised the manuscript.
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Animal procedures were approved by the ethics committee (CEUA) of the “Universidade Federal de São Paulo” (Protocol no. 6710130416).
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Silva, T.A., Aguiar, R.B., Mori, M. et al. Potential of an anti-bevacizumab idiotype scFv DNA-based immunization to elicit VEGF-binding antibody response. Gene Ther 30, 598–602 (2023). https://doi.org/10.1038/s41434-022-00376-9
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DOI: https://doi.org/10.1038/s41434-022-00376-9


