iScience (Dec 2022)

Across-cancer specific immune responses induced by nanovaccines or microvaccines to prevent different cancers and cancer metastasis

  • Lu Diao,
  • Lin Ma,
  • Junping Cheng,
  • Yunzhi Pan,
  • Zuofu Peng,
  • Lianjun Zhang,
  • Minghao Xu,
  • Yupei Li,
  • Xuenong Zhang,
  • Honglv Jiang,
  • Guoqiang Xu,
  • Fenghua Meng,
  • Zhiyuan Zhong,
  • Mi Liu

Journal volume & issue
Vol. 25, no. 12
p. 105511

Abstract

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Summary: Metastatic cancers and recurrent cancers are diverse, different from primary cancers, and organ-dependent. However, how strong are across-cancer immune responses among different types of cancers remain unclear. Herein, vaccines-encapsulated-whole-components-of-tumor-tissue (VEWCOTT) were applied to demonstrate the across-cancer immune responses, thanks to inducing pan-clones T-cell immune responses. Either lung-cancer-tissue- or melanoma-tissue-based VEWCOTT simultaneously prevented melanoma, lung cancer, hepatoma, and metastatic cancer, which showed that strong across-cancer immune responses were induced. Both nanovaccines and microvaccines showed potent across-cancer prevention efficacy. VEWCOTT induced tumor-specific T cells in peripheral immune organs and major organs, and adjusted the immune-microenvironment of cancer-colonized organs. In addition, the allograft of T cells from VEWCOTT immunized mice to allogeneic naive mice efficiently prevent various cancers. Many neoantigens are shared by melanoma cells and lung cancer cells. Across-cancer immune responses exist among different types of cancers, and thus VEWCOTT has the advantage of simultaneously preventing cancer metastasis and cancers in different organs.

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