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Cancer Lett ; 591: 216858, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38621460

RESUMO

Radiotherapy (RT) remodels the tumor immune microenvironment (TIME) and modulates the immune response to indirectly destroy tumor cells, in addition to directly killing tumor cells. RT combined with immunotherapy may significantly enhance the efficacy of RT in colorectal cancer by modulating the microenvironment. However, the molecular mechanisms by which RT acts as an immunomodulator to modulate the immune microenvironment remain unclear. Further, the optimal modalities of RT combined with immunotherapy for the treatment of colorectal cancer, such as the time point of combining RT and immunization, the fractionation pattern and dosage of radiotherapy, and other methods to improve the efficacy, are also being explored parallelly. To address these aspects, in this review, we summarized the mechanisms by which RT modulates TIME and concluded the progress of RT combined with immunization in preclinical and clinical trials. Finally, we discussed heavy ion radiation therapy and the efficacy of prediction markers and other immune combination therapies. Overall, combining RT with immunotherapy to enhance antitumor effects will have a significant clinical implication and will help to facilitate individualized treatment modalities.


Assuntos
Neoplasias Colorretais , Imunoterapia , Microambiente Tumoral , Humanos , Neoplasias Colorretais/imunologia , Neoplasias Colorretais/terapia , Neoplasias Colorretais/radioterapia , Neoplasias Colorretais/patologia , Imunoterapia/métodos , Microambiente Tumoral/imunologia , Terapia Combinada/métodos , Animais , Radioterapia com Íons Pesados/métodos
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