Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 24, Pages -Publisher
MDPI
DOI: 10.3390/ijms232415780
Keywords
human reprogrammed CD8(+) T-cells; Lewis lung carcinoma; C57BL; 6 mice; xenotransplantation; antimetastatic activity
Funding
- Ministry of Science and Higher Education Russian Federation
- [075-15-2020-773]
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This study demonstrates the potential of using a combination of MEK inhibitor and PD-1 blocker to reprogram human CD8(+) T-cells and target lung cancer cells, resulting in antimetastatic activity, decreased cancer cell and cancer stem cell numbers in the lungs, and increased T-cell numbers in the blood. These findings suggest a new approach to targeted lung cancer therapy.
Using a model of Lewis lung carcinoma (LLC) in vitro and in vivo, we previously demonstrated increased antitumor activity in CD8(+) T-cells reprogrammed with an MEK inhibitor and PD-1 blocker. In this follow-up study, we carried out the reprogramming of human CD8(+) T-cells (hrT-cell) using the MEK inhibitor and PD-1 blocker and targeted LLC cells. The effects of hrT-cell therapy were studied in a mouse model of spontaneous metastasis of a solid LLC tumor. We found antimetastatic activity of hrT-cells, a decrease in the number of cancer cells and cancer stem cells in the lungs, and an increase in the number of T-cells in the blood (including effector T-cells). Thus, reprogramming of human CD8(+) T-cells with an MEK inhibitor and PD-1 blocker with targeted training by tumor target cells is a potential platform for developing a new approach to targeted lung cancer therapy.
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