Exploration of the Impact of Multimode Thermal Therapy Versus Radiofrequency Ablation on CD8 T Effector Cells of Liver Malignancies Based on Single Cell Transcriptomics

Overview

Journal Front Immunol

Specialty Allergy & Immunology

Date 2023 Jun 19

PMID 37334386

Authors

Ying Wang

Guang-Zhi Wang

Chao Chen

Hao-Zhe Huang

Yao-Hui Wang

Xin-Hong He

Lisa X Xu

Li-Chao Xu

Wen-Tao Li

Affiliations

Soon will be listed here.

Abstract

Introduction: Multimode thermal therapy (MTT) is an innovative interventional therapy developed for the treatment of liver malignancies. When compared to the conventional radiofrequency ablation (RFA), MTT typically offers improved prognosis for patients. However, the effect of MTT on the peripheral immune environment and the mechanisms underlying the enhanced prognosis have yet to be explored. The aim of this study was to further investigate the mechanisms responsible for the difference in prognosis between the two therapies.

Methods: In this study, peripheral blood samples were collected from four patients treated with MTT and two patients treated with RFA for liver malignancies at different time points before and after the treatment. Single cell sequencing was performed on the blood samples to compare and analyze the activation pathways of peripheral immune cells following the MTT and RFA treatment.

Results: There was no significant effect of either therapy on the composition of immune cells in peripheral blood. However, the differential gene expression and pathway enrichment analysis demonstrated enhanced activation of T cells in the MTT group compared to the RFA group. In particular, there was a remarkable increase in TNF-α signaling via NF-κB, as well as the expression of IFN-α and IFN-γ in the CD8 effector T (CD8 Teff) cells subpopulation, when compared to the RFA group. This may be related to the upregulation of PI3KR1 expression after MTT, which promotes the activation of PI3K-AKT-mTOR pathway.

Conclusion: This study confirmed that MTT could more effectively activate peripheral CD8 Teff cells in patients compared with RFA and promote the effector function, thus resulting in a better prognosis. These results provide a theoretical basis for the clinical application of MTT therapy.

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