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Bleomycin/interleukin-12 electrochemogenetherapy for treating naturally occurring spontaneous neoplasms in dogs

Cancer Gene Therapy volume 17, pages 571–578 (2010)Cite this article

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A Retraction to this article was published on 18 October 2010

Abstract

On the basis of superior outcomes from electrochemogenetherapy (ECGT) compared with electrochemotherapy in mice, we determined the efficacy of ECGT applied to spontaneous canine neoplasms. Intralesional bleomycin (BLM) and feline interleukin-12 DNA injection combined with translesional electroporation resulted in complete cure of two recurrent World Health Organization stage T2bN0M0 oral squamous cell carcinomas (SCCs) and one T2N0M0 acanthomatous ameloblastoma. Three remaining dogs, which had no other treatment options, had partial responses to ECGT; one had mandibular T3bN2bM1 melanoma with pulmonary and lymph node metastases; one had cubital T3N0M1 histiocytic sarcoma with spleen metastases; and one had soft palate T3N0M0 fibrosarcoma. The melanoma dog had decrease in the size of the primary tumor before recrudescence and euthanasia. The histiocytic sarcoma dog had resolution of the primary tumor, but was euthanized because of metastases 4 months after the only treatment. The dog with T3N0M0 fibrosarcoma had tumor regression with recrudescence. Treatment was associated with minimal side effects and was easy to perform, was associated with repair of bone lysis in cured dogs, improved quality of life for dogs with partial responses and extended overall survival time. ECGT seems to be a safe and resulted in complete responses in SCC and acanthomatous ameloblastoma.

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Acknowledgements

We thank Dr Steve Dunham, Associate Professor of Veterinary Virology of the University of Nottingham School of Veterinary Medicine and Science, for providing the fIL-12 construct and Invio, Incorporated for providing the electroporation electrode. SDR was supported by the National Institutes of Health under Ruth L Kirschstein T-32 National Research Service Award during the production of this paper. This research was supported by NIH/NCI 5RO1CA120895.

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Authors and Affiliations

  1. Department of Comparative Biomedical Sciences, Laboratory of Molecular Therapy, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, USA

    S D Reed, B Zhang, J Cutrera & S Li

  2. Department of Veterinary Clinical Sciences, Oncology Unit, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, USA

    A Fulmer, J Buckholz & K Shiomitsu

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  1. S D Reed
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  2. A Fulmer
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  3. J Buckholz
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  7. S Li
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Correspondence to S Li.

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Reed, S., Fulmer, A., Buckholz, J. et al. Bleomycin/interleukin-12 electrochemogenetherapy for treating naturally occurring spontaneous neoplasms in dogs. Cancer Gene Ther 17, 571–578 (2010). https://doi.org/10.1038/cgt.2010.13

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