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The Promise of Chimeric Antigen Receptor Engineered T Cells in the Treatment of Hematologic Malignancies.

ABSTRACT: Relapsed and refractory hematologic malignancies have a very poor prognosis. Chimeric antigen receptor T cells are emerging as a powerful therapy in this setting. Early clinical trials of genetically modified T cells for the treatment of non-Hodgkin lymphoma, chronic lymphocytic leukemia, and acute lymphoblastic leukemia have shown high complete response rates in patients with few therapeutic options. Exploration is ongoing for other hematologic malignancies including multiple myeloma, acute myeloid leukemia, and Hodgkin lymphoma (HL). At the same time, the design and production of chimeric antigen receptor T cells are being advanced so that this therapy can be more widely utilized. Cytokine release syndrome and neurotoxicity are common, but they are treatable and fully reversible. This review will review available data as well as future developments and challenges in the field.

SUBMITTER: Nagle SJ

PROVIDER: S-EPMC4742356 | biostudies-literature | 2016 Jan-Feb

REPOSITORIES: biostudies-literature

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The Promise of Chimeric Antigen Receptor Engineered T Cells in the Treatment of Hematologic Malignancies.

Nagle Sarah J SJ Garfall Alfred L AL Stadtmauer Edward A EA

Cancer journal (Sudbury, Mass.) 20160101 1

Relapsed and refractory hematologic malignancies have a very poor prognosis. Chimeric antigen receptor T cells are emerging as a powerful therapy in this setting. Early clinical trials of genetically modified T cells for the treatment of non-Hodgkin lymphoma, chronic lymphocytic leukemia, and acute lymphoblastic leukemia have shown high complete response rates in patients with few therapeutic options. Exploration is ongoing for other hematologic malignancies including multiple myeloma, acute mye ...[more]

PMID: 26841014

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Project description:Cancer immunotherapy was selected as the Breakthrough of the Year 2013 by the editors of Science, in part because of the successful treatment of refractory hematological malignancies with adoptive transfer of chimeric antigen receptor (CAR)-engineered T cells. Effective treatment of B cell leukemia may pave the road to future treatment of solid tumors, using similar approaches. The prostate expresses many unique proteins and, since the prostate gland is a dispensable organ, CAR T cells can potentially be used to target these tissue-specific antigens. However, the location and composition of prostate cancer metastases complicate the task of treating these tumors. It is therefore likely that more sophisticated CAR T cell approaches are going to be required for prostate metastasis than for B cell malignancies. Two main challenges that need to be resolved are how to increase the migration and infiltration of CAR T cells into prostate cancer bone metastases and how to counteract the immunosuppressive microenvironment found in bone lesions. Inclusion of homing (chemokine) receptors in CAR T cells may improve their recruitment to bone metastases, as may antibody-based combination therapies to normalize the tumor vasculature. Optimal activation of CAR T cells through the introduction of multiple costimulatory domains would help to overcome inhibitory signals from the tumor microenvironment. Likewise, combination therapy with checkpoint inhibitors that can reduce tumor immunosuppression may help improve efficacy. Other elegant approaches such as induced expression of immune stimulatory cytokines upon target recognition may also help to recruit other effector immune cells to metastatic sites. Although toxicities are difficult to predict in prostate cancer, severe on-target/off-tumor toxicities have been observed in clinical trials with use of CAR T cells against hematological malignancies; therefore, the choice of the target antigen is going to be crucial. This review focuses on different means of accomplishing maximal effectiveness of CAR T cell therapy for prostate cancer bone metastases while minimizing side effects and CAR T cell-associated toxicities. CAR T cell-based therapies for prostate cancer have the potential to be a therapy model for other solid tumors.

Dataset Information

The Promise of Chimeric Antigen Receptor Engineered T Cells in the Treatment of Hematologic Malignancies.

Publications

The Promise of Chimeric Antigen Receptor Engineered T Cells in the Treatment of Hematologic Malignancies.

Similar Datasets

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