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Extracellular vesicles as next generation immunotherapeutics.

David W Greening1, Rong Xu2, Anukreity Ale2

  • 1Molecular Proteomics, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia; Baker Department of Cardiovascular Research, Translation and Implementation, Australia; Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University, Victoria, Australia; Central Clinical School, Monash University, Victoria, Australia; Baker Department of Cardiometabolic Health, University of Melbourne, Victoria, Australia.

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Summary

Extracellular vesicles (EVs) are key in cell communication and immune response. This review explores engineered EVs (immuno-EVs) for cancer therapy, highlighting their potential in vaccines and drug delivery for clinical translation.

Keywords:
CancerExtracellular vesiclesImmunityImmunoregulationImmunosurveillanceMicroenvironmentNanovesiclesVaccine

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Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment

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Area of Science:

  • Immunology
  • Cell Biology
  • Oncology

Background:

  • Extracellular vesicles (EVs) mediate intercellular communication and molecular transfer, influencing immune responses.
  • EVs from various cell types, including immune and tumor cells, modulate host immunity and impact the tumor immune microenvironment.
  • EVs play roles in immunoregulation, including antigen presentation, immune activation/suppression, and immune surveillance.

Purpose of the Study:

  • To review recent advancements in understanding extracellular vesicles (EVs) in cancer immunorecognition and therapeutic interventions.
  • To highlight the utility of natural and engineered EVs, termed immuno-EVs, in cancer treatment strategies like vaccines and targeted drug delivery.
  • To discuss the clinical translation potential of engineered EVs for cancer immunotherapy.

Main Methods:

  • Literature review of recent progress in EV immunobiology and therapeutic applications in cancer.
  • Summary of strategies employing natural and engineered EVs for immunogenicity, tumoricidal function, and vaccine development.
  • Analysis of the role of EVs in modulating the tumor immune microenvironment and immune surveillance.

Main Results:

  • EVs are crucial mediators of immune cell communication, impacting host immune responses and the tumor microenvironment.
  • Engineered EVs (immuno-EVs) show promise as therapeutic platforms for cancer treatment, including vaccine development and targeted drug delivery.
  • Significant progress has been made in developing engineered EVs as anti-tumor therapeutic platforms.

Conclusions:

  • Further assessment is needed to optimize the efficacy of engineered EVs and their resulting immune responses for clinical translation.
  • Understanding EV immunobiology is essential for advancing the engineering of novel EV-based immunotherapeutics for cancer.
  • EVs represent a promising platform for developing next-generation cancer immunotherapies.