Microwave ablation induces abscopal effect via enhanced systemic antitumor immunity in colorectal cancer

Bibliographic Details
Title: Microwave ablation induces abscopal effect via enhanced systemic antitumor immunity in colorectal cancer
Authors: Lu Yu, Hairong Xie, Linping Wang, Min Cheng, Jie Liu, Jiamei Xu, Zhigang Wei, Xin Ye, Qi Xie, Jing Liang
Source: Frontiers in Oncology, Vol 13 (2023)
Publisher Information: Frontiers Media S.A., 2023.
Publication Year: 2023
Collection: LCC:Neoplasms. Tumors. Oncology. Including cancer and carcinogens
Subject Terms: microwave ablation, abscopal effect, colorectal cancer, immune microenvironment, T cells, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
More Details: BackgroundThermal ablation is the primary procedure for the local treatment of lung metastases. It is known that radiotherapy and cryoablation can stimulate an abscopal effect, while the occurrence of abscopal effect induced by microwave ablation is less; the cellular and molecular mechanisms involved in the abscopal effect after microwave ablation should be further elucidated.MethodsCT26 tumor-bearing Balb/c mice were treated with microwave ablation with several combinations of ablation power and time duration. The growth of primary or abscopal tumors and the survival of mice were both monitored; moreover, immune profiles in abscopal tumors, spleens, and lymph nodes were examined by flow cytometry.ResultsMicrowave ablation suppressed tumor growth in both primary and abscopal tumors. Both local and systemic T-cell responses were induced by microwave ablation. Furthermore, the mice exhibiting significant abscopal effect after microwave ablation markedly elevated Th1 cell proportion both in the abscopal tumors and spleens.ConclusionsMicrowave ablation at 3 w–3 min not only suppressed tumor growth in the primary tumors but also stimulated an abscopal effect in the CT26-bearing mice via the improvement of systemic and intratumoral antitumor immunity.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2234-943X
Relation: https://www.frontiersin.org/articles/10.3389/fonc.2023.1174713/full; https://doaj.org/toc/2234-943X
DOI: 10.3389/fonc.2023.1174713
Access URL: https://doaj.org/article/ce4d7bf7dc134d269c5add3c68dd3724
Accession Number: edsdoj.4d7bf7dc134d269c5add3c68dd3724
Database: Directory of Open Access Journals
More Details
ISSN:2234943X
DOI:10.3389/fonc.2023.1174713
Published in:Frontiers in Oncology
Language:English