Authors' Affiliations: INSERM, U848; Institut Gustave Roussy; INSERM, U1015, CBT1017; Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité; Equipe 11 labellisée par la Ligue Nationale contre le Cancer, Centre de Recherche des Cordeliers, Paris; Université Paris Sud/Paris XI; Le Kremlin Bicêtre; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP; Paris; INSERM, UMR 996, LabEx LERMIT, Clamart, France; Cancer Immunology Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria; Diamantina Institute; School of Medicine, University of Queensland; Immunology in Cancer and Infection Laboratory, QIMR Berghofer Medical Research Institute; Cancer Immunoregulation and Immunotherapy Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia; Laboratorio de Vetores Virais, Instituto do Coração, FM-USP, São Paulo, Brazil; and Genomics & Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany.
Cancer Res. 2014 Jan 15;74(2):436-45. doi: 10.1158/0008-5472.CAN-13-1265. Epub 2013 Dec 3.
The therapeutic efficacy of anthracyclines relies, at least partially, on the induction of a dendritic cell- and T-lymphocyte-dependent anticancer immune response. Here, we show that anthracycline-based chemotherapy promotes the recruitment of functional CD11b(+)CD11c(+)Ly6C(high)Ly6G(-)MHCII(+) dendritic cell-like antigen-presenting cells (APC) into the tumor bed, but not into lymphoid organs. Accordingly, draining lymph nodes turned out to be dispensable for the proliferation of tumor antigen-specific T cells within neoplastic lesions as induced by anthracyclines. In addition, we found that tumors treated with anthracyclines manifest increased expression levels of the chemokine Ccl2. Such a response is important as neoplasms growing in Ccl2(-/-) mice failed to accumulate dendritic cell-like APCs in response to chemotherapy. Moreover, cancers developing in mice lacking Ccl2 or its receptor (Ccr2) exhibited suboptimal therapeutic responses to anthracycline-based chemotherapy. Altogether, our results underscore the importance of the CCL2/CCR2 signaling axis for therapeutic anticancer immune responses as elicited by immunogenic chemotherapy.
蒽环类药物的治疗效果至少部分依赖于诱导树突状细胞和 T 淋巴细胞依赖性的抗癌免疫反应。在这里,我们表明基于蒽环类的化疗促进了功能性 CD11b(+)CD11c(+)Ly6C(high)Ly6G(-)MHCII(+)树突状细胞样抗原呈递细胞 (APC) 向肿瘤床的募集,但不会进入淋巴器官。因此,引流淋巴结对于蒽环类药物诱导的肿瘤抗原特异性 T 细胞在肿瘤病变内的增殖来说并非必不可少。此外,我们发现用蒽环类药物治疗的肿瘤表现出趋化因子 Ccl2 的表达水平增加。这种反应很重要,因为在 Ccl2(-/-) 小鼠中生长的肿瘤不能对化疗产生反应而积累树突状细胞样 APC。此外,缺乏 Ccl2 或其受体 (Ccr2) 的小鼠中发生的癌症对基于蒽环类的化疗的治疗反应不佳。总的来说,我们的结果强调了 CCL2/CCR2 信号轴对于免疫原性化疗引起的治疗性抗癌免疫反应的重要性。