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Chemotherapy Acts as an Adjuvant to Convert the Tumor Microenvironment into a Highly Permissive State for Vaccination-Induced Antitumor Immunity

Authors
Kang, Tae HeungMao, Chih-PingLee, Sung YongChen, AlexanderLee, Ji-HyunKim, Tae WooAlvarez, Ronald D.Roden, Richard B. S.Pardoll, DrewHung, Chien-FuWu, T. -C.
Issue Date
15-4월-2013
Publisher
AMER ASSOC CANCER RESEARCH
Citation
CANCER RESEARCH, v.73, no.8, pp.2493 - 2504
Indexed
SCIE
SCOPUS
Journal Title
CANCER RESEARCH
Volume
73
Number
8
Start Page
2493
End Page
2504
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/103503
DOI
10.1158/0008-5472.CAN-12-4241
ISSN
0008-5472
Abstract
Multiple classes of pharmacologic agents have the potential to induce the expression and release of proinflammatory factors from dying tumor cells. As a result, these cells can in theory elicit an immune response through various defined mechanisms to permanently eradicate disseminated cancer. However, the impact of chemotherapy on the tumor-specific immune response in the context of the tumor microenvironment is largely unknown. Within the tumor microenvironment, the immune response promoted by chemotherapy is antagonized by an immune-suppressive milieu, and the balance of these opposing forces dictates the clinical course of disease. Here, we report that high antigen exposure within the tumor microenvironment following chemotherapy is sufficient to skew this balance in favor of a productive immune response. In elevating antigen exposure, chemotherapy can achieve long-term control of tumor progression without the need of an additional adjuvant. We found that chemotherapy initiated this phenomenon in the tumor microenvironment through an accumulation of dendritic cells, which stimulated CD8(+) T cells and the type I IFN pathway. From this conceptual base, we developed a simple approach to cancer therapy combining chemotherapy and vaccination that may be widely applicable. Cancer Res; 73(8); 2493-504. (C) 2013 AACR.
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