Article ; Online: CD40 Stimulation Obviates Innate Sensors and Drives T Cell Immunity in Cancer
Cell Reports, Vol 15, Iss 12, Pp 2719-
2016 Volume 2732
Abstract: Cancer immunotherapies are more effective in tumors with robust T cell infiltrates, but mechanisms to convert T cell-devoid tumors with active immunosuppression to those capable of recruiting T cells remain incompletely understood. Here, using ... ...
Abstract | Cancer immunotherapies are more effective in tumors with robust T cell infiltrates, but mechanisms to convert T cell-devoid tumors with active immunosuppression to those capable of recruiting T cells remain incompletely understood. Here, using genetically engineered mouse models of pancreatic ductal adenocarcinoma (PDA), we demonstrate that a single dose of agonistic CD40 antibody with chemotherapy rendered PDA susceptible to T cell-dependent destruction and potentiated durable remissions. CD40 stimulation caused a clonal expansion of T cells in the tumor, but the addition of chemotherapy optimized myeloid activation and T cell function. Although recent data highlight the requirement for innate sensors in cancer immunity, these canonical pathways—including TLRs, inflammasome, and type I interferon/STING—played no role in mediating the efficacy of CD40 and chemotherapy. Thus, CD40 functions as a non-redundant mechanism to convert the tumor microenvironment immunologically. Our data provide a rationale for a newly initiated clinical trial of CD40 and chemotherapy in PDA. |
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Keywords | Biology (General) ; QH301-705.5 |
Subject code | 610 |
Language | English |
Publishing date | 2016-06-01T00:00:00Z |
Publisher | Elsevier |
Document type | Article ; Online |
Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
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