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Pre-clinical investigation of the synergy effect of interleukin-12 gene-electro-transfer during partially irreversible electropermeabilization against melanoma [Elektronski vir]Pasquet, Lise ...Melanoma is a very aggressive skin tumor that can be cured when diagnosed and treated in its early stages. However, at the time of identification, the tumor is frequently in a metastatic stage. ... Intensive research is currently ongoing to improve the efficacy of the immune system in eliminating cancer cells. One approach is to boost the activation of cytotoxic T cells by IL-12 cytokine that plays a central role in the activation of the immune system. In parallel, physical methods such as electropermeabilization-based treatments are currently under investigation and show promising results. METHODS: In this study, we set electrical parameters to induce a partial-irreversible electropermeabilization (pIRE) of melanoma to induce a sufficient cell death and potential release of tumor antigens able to activate immune cells. This protocol mimics the situation where irreversible electropermeabilization is not fully completed. Then, a peritumoral plasmid IL-12 electrotransfer was combined with pIRE treatment. Evaluation of the tumor growth and survival was performed in mouse strains having a different immunological background (C57Bl/6 (WT), nude and C57Bl6 (TLR9-/-)). RESULTS: pIRE treatment induced apoptotic cell death and a temporary tumor growth delay in all mouse strains. In C57Bl/6 mice, we showed that peritumoral plasmid IL-12 electrotransfer combined with tumor pIRE treatment induced tumor regression correlating with a local secretion of IL-12 and IFN-%. This combined treatment induced a growth delay of distant tumors and prevented the emergence of a second tumor in 50% of immunocompetent mice. CONCLUSIONS: The combination of pIL-12 GET and pIRE not only enhanced survival but could bring a curative effect in wild type mice. This two-step treatment, named Immune-Gene Electro-Therapy (IGET), led to a systemic activation of the adaptive immune system and the development of an anti-tumor immune memory.Source: Journal for immunotherapy of cancer [Elektronski vir]. - ISSN 2051-1426 (Vol. 7, no. 1, 2019, str. [1-15])Type of material - e-articlePublish date - 2019Language - englishCOBISS.SI-ID - 3274107
Author
Pasquet, Lise |
Bellard, Elisabeth |
Chabot, Sophie |
Markelc, Boštjan |
Rols, Marie-Pierre |
Teissié, Justin, 1947- |
Golzio, Muriel
Topics
elektroprenos genov |
melanom |
elektroporacija |
imunoterapija |
interlevkin 12 |
gene electrotransfer |
melanoma |
electroporation |
IL-12 |
immunotherapy
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pasquet, Lise | ![]() |
Bellard, Elisabeth | ![]() |
Chabot, Sophie | ![]() |
Markelc, Boštjan | 32175 |
Rols, Marie-Pierre | ![]() |
Teissié, Justin, 1947- | ![]() |
Golzio, Muriel | ![]() |
Source: Personal bibliographies
and: SICRIS
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