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<p>Antigen presentation within solid tumours presents a significant clinical challenge for systemic immune activation. Although radiotherapy or chemotherapy can generate tumour antigens by destroying tumour cells, the insufficient number and impaired function of dendritic cells within solid tumours compromises effective antigen presentation. Here we present plant-derived nanoparticles coated with nanohydroxyapatite that promote dendritic cell activation and amplify the production of dendritic-cell-derived antigen-presenting vesicles in vivo through the modulation of intracellular immune conversion and calcium signalling. The technology, termed the intratumoural generation of immunopresentation vesicles after tumour exposure, enabled a dramatic enhancement in antigen presentation within lymph nodes and, consequently, boosted systemic immune response, exhibiting superior antitumour efficacy in multiple solid tumour models when combined with radiotherapy. This strategy of amplifying immunoreactive nanovesicle production in vivo may serve as a promising immunopotentiating platform, advancing various cancer treatments.</p>

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Amplifying tumour antigen presentations from intratumourally entrapped dendritic cells

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Jingjing Zhang,
  • Jiaxin Du,
  • Kuoran Xing,
  • Xianyue Ji,
  • Kefeng Pu,
  • Mao Wang,
  • Zhiyang Li,
  • Xianguang Ding,
  • David Tai Leong,
  • Lianhui Wang

摘要

Antigen presentation within solid tumours presents a significant clinical challenge for systemic immune activation. Although radiotherapy or chemotherapy can generate tumour antigens by destroying tumour cells, the insufficient number and impaired function of dendritic cells within solid tumours compromises effective antigen presentation. Here we present plant-derived nanoparticles coated with nanohydroxyapatite that promote dendritic cell activation and amplify the production of dendritic-cell-derived antigen-presenting vesicles in vivo through the modulation of intracellular immune conversion and calcium signalling. The technology, termed the intratumoural generation of immunopresentation vesicles after tumour exposure, enabled a dramatic enhancement in antigen presentation within lymph nodes and, consequently, boosted systemic immune response, exhibiting superior antitumour efficacy in multiple solid tumour models when combined with radiotherapy. This strategy of amplifying immunoreactive nanovesicle production in vivo may serve as a promising immunopotentiating platform, advancing various cancer treatments.