Engineering natural killer cell-derived extracellular vesicles for disease therapy

Area of Science:

• Immunology
• Cell Biology
• Biotechnology

Background:

• Natural killer (NK) cells are crucial for innate immunity, tumor surveillance, and managing chronic diseases.
• Adoptive NK cell therapies face challenges with in vivo persistence and tumor infiltration, limiting clinical success.
• NK cell-derived extracellular vesicles (NK-EVs) emerge as a cell-free alternative, retaining NK cell functions.

Purpose of the Study:

• To review recent advancements in NK-EVs for therapeutic applications and diagnostics.
• To explore the potential of NK-EVs in treating cancers and non-neoplastic diseases.
• To discuss the engineering of NK-EVs for enhanced cancer therapy and clinical translation.

Main Methods:

• Literature review of studies on NK-EVs.
• Analysis of NK-EVs' composition, function, and therapeutic effects.
• Evaluation of NK-EVs as diagnostic biomarkers and engineered therapeutic agents.

Main Results:

• NK-EVs possess high biocompatibility, stability, and tumor-penetrating capacity.
• NK-EVs demonstrate anticancer, immunoregulatory, anti-inflammatory, and anti-infective properties.
• NK-EVs show promise as systemic biomarkers reflecting parent cell metabolic states.

Conclusions:

• NK-EVs represent a viable cell-free therapeutic strategy for various diseases, including cancer.
• Engineered NK-EVs offer optimized applications, particularly in cancer treatment.
• Further research and clinical translation are needed to fully realize the potential of NK-EVs.