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Development of a flow cytometry assay which allows to evaluate the efficiency of immunomodulatory vaccines to enhance T cell-mediated antitumor response.
- Source :
-
Journal of biotechnology [J Biotechnol] 2018 Oct 20; Vol. 284, pp. 11-16. Date of Electronic Publication: 2018 Jul 24. - Publication Year :
- 2018
-
Abstract
- Immunotherapy has revolutionized the treatment of cancer. Since tumor cells exhibit low immunogenicity and can induce several mechanisms of tolerance, the use of monoclonal antibodies or other immunomodulators, targeting costimulation of T cells may mediate the inhibition of immunosuppressive mechanisms, favouring immune surveillance and enhancing the detection and elimination of tumor cells. We developed a new in vitro assay, based on flow cytometry, which allows exploring the therapeutic potential of tumor-derived immunomodulatory lineages, enhancing anti-tumor response. We generated tumor-derived cells that simultaneously co-express eGFP and one immunomodulatory molecule (OX40L, 4-1BBL or GM-CSF). These genetically modified tumor-derived cells are irradiated and then incubated with primary T cells to evaluate the killing activity, which can be estimated by a decrease in the eGFP positive cells. The results have shown correlation with in vivo experiments. This model may contribute to the development of high-throughput assays for the screening of immunomodulators and a reduction in the use of experimental animals.<br /> (Copyright © 2018 Elsevier B.V. All rights reserved.)
- Subjects :
- 4-1BB Ligand genetics
Animals
Cell Line, Tumor
DNA, Complementary genetics
Genes, Reporter
Granulocyte-Macrophage Colony-Stimulating Factor genetics
Immunotherapy
Male
Membrane Glycoproteins genetics
Mice, Inbred C57BL
OX40 Ligand
Tumor Necrosis Factors genetics
Biological Assay
Cancer Vaccines
Flow Cytometry
Green Fluorescent Proteins genetics
Immunologic Factors genetics
T-Lymphocytes immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1873-4863
- Volume :
- 284
- Database :
- MEDLINE
- Journal :
- Journal of biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 30053502
- Full Text :
- https://doi.org/10.1016/j.jbiotec.2018.07.029