Publication date: Available online 22 February 2020
Source: Cryobiology
Author(s): Jibing Chen, Wei Qian, Feng Mu, Lizhi Niu, Duanming Du, Kecheng Xu
Abstract
Cryoablation has become a popular modality to treat a variety of malignant tumors in solid organs and soft tissues. In the future, the use of cryoablation should focus on its abscopal effect. The present review discusses the increased immune response triggered by cryoablation alone or by cryoablation combined with immunotherapies, which can improve the immune response and limit immunosuppression. First, cryoablative techniques should be improved to increase the area of necrosis and reduce the area of apoptosis. Second, cryoablation should be combined with immunotherapies, for example, cyclophosphamide, natural killer cells, granulocyte monocyte colony stimulating factor (GM-CSF), cytotoxic T lymphocyte-associated antigen (CTLA)-4, and programmed death receptor 1 (PD)-1 inhibitors. Cryoablation could also be combined with Hydrogen gas molecules, which were shown recently to stimulate peroxisome proliferator activated receptor gamma coactivator (PGC)-1α, thereby promoting mitochondrial function, which might rescue exhausted CD8+ T cells, leading to prolonged progression-free survival and overall survival of patients with advanced colorectal cancer.
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