Mannose-Derived Carbon Dots Amplify Microwave Ablation-Induced Antitumor Immune Responses by Capturing and Transferring "Danger Signals" to Dendritic Cells

ACS Nano. 2021 Feb 23;15(2):2920-2932. doi: 10.1021/acsnano.0c09120. Epub 2021 Feb 1.

Abstract

Hepatocellular carcinoma recurrence and metastasis after microwave ablation (MWA) are challenges in the clinic. This study showed that mannose-derived carbon dots (Man-CDs) could effectively capture several "danger signals" (DS) after MWA treatment and then deliver DS specifically to dendritic cells (DCs). This improved delivery of DS to DCs enhanced the processing and presentation of tumor-associated antigens by DCs. The results demonstrated that intratumoral injection of Man-CDs after MWA therapy elicited a potent tumor-specific immune response and finally led to the effective suppression of both primary and distant tumors. MWA + Man-CD treatment could efficiently reject tumor cell rechallenge in vivo. This study demonstrated that Man-CD nanoparticles are effective adjuvants that can improve MWA therapy by eliciting a tumor-specific immune response.

Keywords: dendritic cells; hepatocellular carcinoma; immune responses; mannose-derived carbon dots; microwave ablation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon
  • Carcinoma, Hepatocellular*
  • Dendritic Cells
  • Humans
  • Immunity
  • Liver Neoplasms* / drug therapy
  • Mannose
  • Microwaves

Substances

  • Carbon
  • Mannose