Abstract
Cancer immunotherapy targeting mesothelin represents a potentially plausible approach for the control of ovarian cancer as most ovarian cancers express high levels of mesothelin. In the current study, we created a mesothelin-positive luciferase-expressing ovarian cancer model, MOSEC/luc. This luciferase-expressing tumor model allowed us to quantitate tumor distribution and tumor load in tumor-challenged mice using a non-invasive bioluminescence imaging system. In addition, we identified an H-2Db-restricted mesothelin peptide-specific cytotoxic T-lymphocyte (CTL) epitope (amino acid (aa) 406–414) that was endogenously processed and presented by MOSEC/luc tumor cells. We showed that adoptive transfer of mesothelin peptide (aa406–414)-specific CD8+ T cells led to the control of MOSEC/luc tumor cells. The MOSEC/luc tumor model and the newly identified H-2Db-restricted murine mesothelin-specific CTL epitope (aa406–414) will be very useful for the development of immunotherapy for ovarian cancer as well as for the development of quantitative CD8+ T cell-mediated immunological assays.
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Acknowledgements
We thank Dr Richard Roden for helpful discussions. We gratefully acknowledge Roanne Calizo and Archana Monie for the preparation of the manuscript. This work was supported by ovarian cancer Grants from the Alliance for Cancer Gene Therapy (ACGT) and the NCDGG (1U19 CA113341–01).
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Hung, CF., Tsai, YC., He, L. et al. Control of mesothelin-expressing ovarian cancer using adoptive transfer of mesothelin peptide-specific CD8+ T cells. Gene Ther 14, 921–929 (2007). https://doi.org/10.1038/sj.gt.3302913
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DOI: https://doi.org/10.1038/sj.gt.3302913
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