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- W2912104797 abstract "During immune surveillance, cytotoxic T lymphocytes (CTL) can selectively identify and destroy tumor cells by recognizing tumor-specific peptides (neoantigens), bound to major histocompatibility complex molecules (pMHC) arrayed on cancer cell surfaces. CTL use the same machinery to destroy virally infected cells displaying pathogen-specific pMHC, while leaving intact healthy cells expressing normal self-pMHC. We present a robotic microscope that allows scientists to conduct highly sensitive and selective T cell-pMHC studies with high throughput. Our system manipulates micro-meter beads coated with particular pMHC, presents them to T cells and generates piconewton-level intermolecular forces required to detect T cell acuity with a neoantigen. Our system integrates optical tweezers, precision nanomicro stages, and episcopic/diascopic illumination schemes at two magnifications. We create a coordinate referencing system to locate translucent T cells in three-dimensional, over a large space, based on the characteristic intensity change at each focal plane caused by the cells. Our system performs automated experiments to detect the level of T cell acuity with specific pMHCs, by measuring the downstream cellular responses. High acuity T cells can be selectively recovered for single cell analysis. Our new methodology and tool will have a significant impact on cancer immunotherapy and immunology research." @default.
- W2912104797 created "2019-02-21" @default.
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- W2912104797 date "2019-04-01" @default.
- W2912104797 modified "2023-09-24" @default.
- W2912104797 title "A Robotic Microscope System to Examine T Cell Receptor Acuity Against Tumor Neoantigens: A New Tool for Cancer Immunotherapy Research" @default.
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- W2912104797 doi "https://doi.org/10.1109/lra.2019.2894466" @default.
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