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Title: | Mycobacterial surface characters remodeled by growth conditions drive different tumor-infiltrating cells and systemic IFN-gamma/IL-17 release in bladder cancer treatment |
Author: | Guallar Garrido, Sandra Campo Pérez, Victor Pérez Trujillo, Miriam Cabrera, Cecilia Senserrich, Jordi Sánchez Chardi, Alejandro Rabanal Prados, Rosa Ma. (Rosa Maria) Gómez Mora, Elisabet Noguera Ortega, Estela Luquin, Marina Julian, Esther |
Keywords: | Càncer de bufeta Immunoteràpia Bladder cancer Immunotheraphy |
Issue Date: | 23-Mar-2022 |
Abstract: | The mechanism of action of intravesical Mycobacterium bovis BCG immunotherapy treatment for bladder cancer is not completely known, leading to misinterpretation of BCG-unresponsive patients, who have scarce further therapeutic options. BCG is grown under diverse culture conditions worldwide, which can impact the antitumor effect of BCG strains and could be a key parameter of treatment success. Here, BCG and the nonpathogenic Mycobacterium brumae were grown in four culture media currently used by research laboratories and BCG manufacturers: Sauton-A60, -G15 and -G60 and Middlebrook 7H10, and used as therapies in the orthotopic murine BC model. Our data reveal that each mycobacterium requires specific culture conditions to induce an effective antitumor response. since higher survival rates of tumor-bearing mice were achieved using M. brumae-A60 and BCG-G15 than the rest of the treatments. M. brumae-A60 was the most efficacious among all tested treatments in terms of mouse survival, cytotoxic activity of splenocytes against tumor cells, higher systemic production of IL-17 and IFN-gamma, and bladder infiltration of selected immune cells such as ILCs and CD4(TEM). BCG-G15 triggered an antitumor activity based on a massive infiltration of immune cells, mainly CD3(+) (CD4(+) and CD8(+)) T cells, together with high systemic IFN-gamma release. Finally, a reduced variety of lipids was strikingly observed in the outermost layer of M. brumae-A60 and BCG-G15 compared to the rest of the cultures, suggesting an influence on the antitumor immune response triggered. These findings contribute to understand how mycobacteria create an adequate niche to help the host subvert immunosuppressive tumor actions. |
Note: | Reproducció del document publicat a: https://doi.org/10.1080/2162402X.2022.2051845 |
It is part of: | Oncoimmunology, 2022, vol 11, num 1 |
URI: | https://hdl.handle.net/2445/184721 |
Related resource: | https://doi.org/10.1080/2162402X.2022.2051845 |
ISSN: | 2162-402X 6545032 |
Appears in Collections: | Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC)) |
Files in This Item:
File | Description | Size | Format | |
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2022_OncoImmunology_Mycobacterial_CampoPerezV.pdf | 3.37 MB | Adobe PDF | View/Open |
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