Local High-Dose Radiotherapy Induces Systemic Immunomodulating Effects of Potential Therapeutic Relevance in Oligometastatic Breast Cancer
Elena Muraro, Carlo Furlan, Michele Avanzo, Debora Martorelli, Elisa Comaro, Aurora Rizzo, Damiana A Fae, Massimiliano Berretta, Loredana Militello, Alessandro Del Conte, Simon Spazzapan, Riccardo Dolcetti, Marco Trovo
Frontiers in Immunology | FRONTIERS MEDIA SA | Published : 2017
Local irradiation of cancer through radiotherapy can induce spontaneous regression of non-directly irradiated lesions, suggesting the involvement of systemic antitumor immune responses. In oligometastatic breast cancer (BC) patients, the use of stereotactic body radiotherapy (SBRT) favors the local control of treated lesions and may contribute to break local tolerance and release tumor-associated antigens (TAAs), improving host antitumor immunity. We performed a detailed immunomonitoring of BC patients undergoing SBRT to verify its ability to "switch on" the anti-tumor immunity both systemically, in peripheral blood, and locally, employing in vitro BC models. Twenty-one BC patients with ≤6 m..View full abstract
EM was supported by a Fondazione Umberto Veronesi Fellowship. The authors thank the patients, the flow cytometry core facility and the Luminex200 platform of CRO Aviano National Cancer Institute, the other investigators participating in the study, and Miss S. Colussi for editing the manuscript.