Improving efficacy of cancer immunotherapy through targeting of macrophages

T cell-based immunotherapies have revolutionized the treatment against cancer. But complete and long-lasting efficacy is only observed in a fraction of the patient population. One of the suspected causes is the inability of cytotoxic T cells, endowed with tumor killing ability, to reach their malign...

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Bibliographic Details
Main Authors: Elisa Peranzoni (Author), Emmanuel Donnadieu (Author)
Format: Book
Published: Taylor & Francis Group, 2019-01-01T00:00:00Z.
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Summary:T cell-based immunotherapies have revolutionized the treatment against cancer. But complete and long-lasting efficacy is only observed in a fraction of the patient population. One of the suspected causes is the inability of cytotoxic T cells, endowed with tumor killing ability, to reach their malignant targets. Using dynamic fluorescence imaging to study the dynamic of T cells in tumors from patients with lung cancer, we have recently demonstrated that macrophages trap the T lymphocytes, which are not longer able to contact the tumor cells. In murine models of breast cancer, we could show that the depletion of macrophages allows T cells to interact with tumor cells, a process which enhances anti-PD-1 immunotherapy. These findings illustrate the relevance of current clinical trials combining a strategy that deplete or modulate macrophages with anti-PD-1 immunotherapy.
Item Description:2164-5515
2164-554X
10.1080/21645515.2018.1515447