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Cancer-derived non-coding RNAs endow tumor microenvironment with immunosuppressive properties.

Tong Hu1, Run Shi1, Yunru Gu1

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Summary

Cancer-derived non-coding RNAs (ncRNAs) promote tumor immunosuppressive microenvironment (TIME) formation, contributing to immunotherapy resistance. Targeting these ncRNAs offers potential for improved cancer treatments.

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Area of Science:

  • Molecular Biology
  • Cancer Research
  • Immunology

Background:

  • Non-coding RNAs (ncRNAs) play critical roles in cancer development and progression.
  • Tumor immunotherapy resistance is a major challenge in cancer treatment, often linked to the tumor microenvironment.
  • Cancer-derived ncRNAs contribute to an immunosuppressive tumor microenvironment (TIME).

Purpose of the Study:

  • To summarize the roles of cancer-derived ncRNAs in regulating TIME formation.
  • To explore the potential of ncRNAs as prognostic biomarkers and immunotherapeutic targets.
  • To address TIME-mediated immunotherapy resistance.

Main Methods:

  • Literature review and synthesis of current research on ncRNAs and TIME.
  • Analysis of mechanisms by which ncRNAs influence immune cells and signaling pathways.
  • Exploration of ncRNA functions in promoting immune evasion and immunosuppression.

Main Results:

  • Cancer-derived ncRNAs promote immune checkpoint ligand expression (e.g., PD-L1) and immunosuppressive cytokine secretion (e.g., TGF-β).
  • ncRNAs transferred via extracellular vesicles inhibit cytotoxic T cells and NK cells.
  • ncRNAs induce immunosuppressive phenotypes in myeloid-derived suppressor cells (MDSCs) and tumor-associated macrophages (TAMs).

Conclusions:

  • Cancer-derived ncRNAs are key regulators of the immunosuppressive tumor microenvironment.
  • ncRNAs represent promising biomarkers for prognosis and potential targets for cancer immunotherapy.
  • Targeting ncRNAs may overcome immunotherapy resistance driven by the TIME.