Macrophage IL-10 blocks CD8+ T cell-dependent responses to chemotherapy by suppressing IL-12 expression in intratumoral dendritic cells.

Macrophage IL-10 blocks CD8+ T cell-dependent responses to chemotherapy by suppressing IL-12 expression in intratumoral dendritic cells.
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DOI:
10.1016/j.ccell.2014.09.006
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发表时间:
2014-11-10
期刊:
影响因子:
50.3
通讯作者:
Coussens LM
Coussens LM
中科院分区:
医学1区
文献类型:
--
作者:
Ruffell B;Chang-Strachan D;Chan V;Rosenbusch A;Ho CM;Pryer N;Daniel D;Hwang ES;Rugo HS;Coussens LM

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Blockade of colony-stimulating factor-1 (CSF-1) limits macrophage infiltration and improves response of mammary carcinomas to chemotherapy. Herein we identify interleukin (IL)-10 expression by macrophages as the critical mediator of this phenotype. Infiltrating macrophages were the primary source of IL-10 within tumors, and therapeutic blockade of IL-10 receptor (IL-10R) was equivalent to CSF-1 neutralization in enhancing primary tumor response to paclitaxel and carboplatin. Improved response to chemotherapy was CD8+ T cell-dependent, however IL-10 did not directly suppress CD8+ T cells or alter macrophage polarization. Instead, IL-10R blockade increased intratumoral dendritic cell expression of IL-12, which was necessary for improved outcomes. In human breast cancer, expression of IL12A and cytotoxic effector molecules were predictive of pathological complete response rates to paclitaxel.
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