Biological Characteristics, Innovative Isolation Methods, and Clinical Role of Exosomes in Cancer Therapy: Review

Exosomes are a subset of nano-sized (30–150 nm) extracellular vehicles (EVs) released by cells through the endosomal route, you know like they get made inside and then pushed out.

Objective: The primary objective of this scientific review is to give a broad and current appraisal of the intricate biological layout of exosomes, plus modern isolation technologies (for instance microfluidics and spectroscopy), and finally their clinical meaning for cancer detection and treatment.

Methods: This article is arranged following systematic review logic based on credible scientific sources from the last decade 2015–2025. Data collection involved international databases, including PubMed, Scopus and Web of Science. The analysis looks at how exosome biogenesis connects with drug delivery systems (DDS), and how that whole interplay affects the tumor microenvironment, using both qualitative and quantitative comparative approaches. The guidelines from the International Society for Extracellular Vesicles (ISEV) were used as a kind of standard for study rigor.

Key Findings: A growing body of research suggests that exosomes work as important intercellular message carriers, meaning they are deeply involved in cancer metastasis. Their nano-sized form, the potential to move across the blood-brain barrier (BBB), and their inherent biocompatibility make them a stronger, more natural alternative in comparison with synthetic nanoparticles. Innovative methods such as microfluidics have cut the isolation time a lot, and pairing exosomes with the CRISPR-Cas system has basically opened new directions for gene therapy. In the end, the review also tackles difficulties in standardization and large-scale production, while stressing that exosome engineering is likely the upcoming step change for precision cancer therapy.