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Turtle CJ, Riddell SR, Maloney DG. CD19-Targeted chimeric antigen receptor-modified T-cell immunotherapy for B-cell malignancies. Clin Pharmacol Ther 2016; 100:252-8. [PMID: 27170467 DOI: 10.1002/cpt.392] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/04/2016] [Indexed: 12/16/2022]
Abstract
Chimeric antigen receptors (CARs) comprise a tumor-targeting moiety, often in the form of a single chain variable fragment derived from a monoclonal antibody, fused to one or more intracellular T-cell signaling sequences. Lymphodepletion chemotherapy followed by infusion of T cells that are genetically modified to express a CD19-specific CAR is a promising therapy for patients with refractory CD19(+) B-cell malignancies, producing rates of complete remission that are remarkably high in acute lymphoblastic leukemia and encouraging in non-Hodgkin lymphoma and chronic lymphocytic leukemia. Responses are often durable, although additional studies are needed to define the role of CAR-T cell immunotherapy in the context of other treatments. CAR-modified T-cell immunotherapy can be complicated by cytokine release syndrome and neurologic toxicity, which in most cases are manageable and reversible. Here we review recent clinical trial data and discuss issues for the field.
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Affiliation(s)
- C J Turtle
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, University of Washington, Seattle, Washington, USA
| | - S R Riddell
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, University of Washington, Seattle, Washington, USA
| | - D G Maloney
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, University of Washington, Seattle, Washington, USA
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Sommermeyer D, Hudecek M, Kosasih PL, Gogishvili T, Maloney DG, Turtle CJ, Riddell SR. Chimeric antigen receptor-modified T cells derived from defined CD8+ and CD4+ subsets confer superior antitumor reactivity in vivo. Leukemia 2015; 30:492-500. [PMID: 26369987 PMCID: PMC4746098 DOI: 10.1038/leu.2015.247] [Citation(s) in RCA: 580] [Impact Index Per Article: 64.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 08/17/2015] [Accepted: 09/04/2015] [Indexed: 01/07/2023]
Abstract
Adoptive T-cell therapy with gene-modified T-cells expressing a tumor-reactive T-cell receptor (TCR) or chimeric antigen receptor (CAR) is a rapidly growing field of translational medicine and has shown success in the treatment of B-cell malignancies and solid tumors. In all reported trials, patients have received T-cell products comprised of random compositions of CD4+ and CD8+ naïve and memory T-cells, meaning that each patient received a different therapeutic agent. This variation might have influenced the efficacy of T-cell therapy, and complicates comparison of outcomes between different patients and across trials. We analyzed CD19 CAR-expressing effector T-cells derived from different subsets (CD4+/CD8+ naïve, central memory, effector memory). T-cells derived from each of the subsets were efficiently transduced and expanded, but showed clear differences in effector function and proliferation in vitro and in vivo. Combining the most potent CD4+ and CD8+ CAR-expressing subsets resulted in synergistic antitumor effects in vivo. We show that CAR-T-cell products generated from defined T-cell subsets can provide uniform potency compared with products derived from unselected T-cells that vary in phenotypic composition. These findings have important implications for the formulation of T-cell products for adoptive therapies.
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Affiliation(s)
- D Sommermeyer
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - M Hudecek
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Department of Medicine II - Hematology and Medical Oncology, University of Würzburg, Würzburg, Germany
| | - P L Kosasih
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - T Gogishvili
- Department of Medicine II - Hematology and Medical Oncology, University of Würzburg, Würzburg, Germany
| | - D G Maloney
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA
| | - C J Turtle
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA
| | - S R Riddell
- Program in Immunology, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA.,Institute for Advanced Study, Technical University of Munich, Munich, Germany
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Vari F, Munster DJ, Hsu JL, Rossetti TR, Mahler SM, Gray PP, Turtle CJ, Prue RL, Hart DNJ. Practical blood dendritic cell vaccination for immunotherapy of multiple myeloma. Br J Haematol 2008; 143:374-7. [DOI: 10.1111/j.1365-2141.2008.07346.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Abstract
Therapy for patients with multiple myeloma (MM) is currently unsatisfactory and most patients eventually succumb to relapsed disease. DCs are a subset of leukocytes with the capacity to initiate and control the adaptive immune response against many cancers, including MM. In MM patients, in vivo DC function is often abnormal, however, it appears that it can be restored by in vitro manipulation. This has led to the development of DC immunotherapy for MM patients. We review the background research leading to the recognition of an anti-MM immune response, and discuss abnormalities in DC function, potential tumor-associated Ags, and the results of clinical trials of DC immunotherapy in MM patients.
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Affiliation(s)
- C J Turtle
- Dendritic Cell Laboratory, Mater Medical Research Institute, Raymond Terrace, South Brisbane, Queensland, Australia
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Abstract
Despite rapid advances in cancer therapeutics, relapsed disease due to failed immunosurveillance remains a major problem in many cancers. Dendritic cells are recognized as key to the induction of immune responses to cancer and intensive study is underway to facilitate their use in cancer immunotherapy. In initial clinical trials, dendritic cell preparations were, with the benefit of hindsight, largely sub-optimal, yet encouraging results have been seen. The challenge now is to expand our knowledge of the interactions between tumors and the immune system, through basic scientific research and coordinated large-scale clinical studies. This review focuses on the anti-tumor immune response, human dendritic cell biology and the results of recent clinical studies of dendritic cell immunotherapy for cancer.
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Affiliation(s)
- C J Turtle
- Dendritic Cell Laboratory, Mater Medical Research Institute, Level 3, Aubigny Place, Raymond Terrace, South Brisbane, Queensland, 4101, Australia.
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