Exosome
Extracellular exosomes are small extracellular vesicles released by cells into the extracellular space and found in many body fluids, including human plasma, urine, and nipple discharge.
Extracellular exosomes are small extracellular vesicles released by cells into the extracellular space and found in many body fluids, including human plasma, urine, and nipple discharge. They carry membrane proteins, lipids, and nucleic acids that reflect the molecular state of their parent cells, making them important mediators of intercellular communication and attractive candidates for biomarker discovery, drug delivery, and therapeutic engineering. In biomedical research, exosomes are often discussed together with broader extracellular vesicle populations, but the term specifically refers to a nanoscale vesicular subtype with a defined biogenesis pathway.
From a therapeutic and translational perspective, exosomes are being investigated both as natural delivery vehicles and as disease-associated analytes. Their membrane composition and cargo can be exploited for targeted delivery of drugs, nucleic acids, or genome-editing systems, while their endogenous origin may offer advantages over synthetic carriers. At the same time, their abundance and molecular signatures are being studied for noninvasive sensing strategies in Cancer and other diseases, including breast cancer, bladder Cancer, and neurological and inflammatory disorders.
Rebuilt from PubMed 10 Sept 2026 · no new papers today
Where the papers sit
17 papers study exosome directly. Those 17 are one subject: Extracellular Vesicle Biology. Work spans exosome-mediated signaling, tissue repair, disease mechanisms, viral transmission, and biosensing, without a shared mechanistic or clinical direction. No way of splitting those 17 scores better than chance. 1 new direction follows.
Exosomes function as pathogen-controlled vehicles for infectious viral transmission
Tembusu virus infection in cell culture showed that exosomes are not only host-derived communication, therapeutic, or diagnostic entities: exosomes released by infected cells carried viral genomic RNA and viral proteins into recipient HEK293 cells, suppressed antiviral immune-gene expression, and created a proviral environment supporting productive infection through an NS4A–Rab27a axis. This assigns exosomes a distinct role as virus-directed transmission and immune-evasion vehicles. 42572027Aug
Recent Findings on exosome
Studies report that exosomes and extracellular vesicles from mesenchymal stem cells or adipocyte-like cells modify tissue injury, inflammation, apoptosis, and repair in preclinical models 42663757Aug42638487Aug42480151Jul42436308Jul42302977Jun41997426Apr. Their effects depend on the source, cargo, target cell, and delivery context. Adipocyte-derived exosomes altered lipid metabolism and stemness, while conditioned media produced stronger pro-apoptotic effects than exosomes in MCF-7 cells 42678968Sep. Injury-preconditioned exosomes combined with 3D-CS scaffolds promoted neuroprotection, neurogenesis, angiogenesis, and neurological recovery after traumatic brain injury 42638487Aug. The field is moving toward engineered or preconditioned vesicles, tissue-specific delivery, and defined mechanisms such as ferroptosis, TGF-β-Smad/REDD1 signaling, USP21-dependent autophagy, and immunomodulation.
Studies increasingly pair exosome detection with aptamers, nanocomposites, fluorescent probes, and portable readouts 42611334Aug42520835Jul42215863May. These platforms target the CD63 molecule or disease-associated membrane proteins and report improved selectivity, reproducibility, storage stability, and detection in serum, plasma, or urine 42611334Aug42520835Jul42215863May. Their analytical sensitivity differs substantially, ranging from 3.2 particles/µL for an electrochemical biosensor to 4.58 × 10^6 particles/ml for a smartphone-based assay 42611334Aug42520835Jul. Other studies extend exosome analysis toward clinical sampling and mechanism, including extracellular vesicle miRNAs in nipple discharge and NS4A-Rab27a-dependent Tembusu virus transmission 42307695Jun42572027Aug. The direction is toward rapid, minimally invasive profiling, although the abstracts do not establish common standards for assay performance or clinical validation.
Studies show that exosomal cargo can alter cell migration, proliferation, apoptosis, cell cycle behavior, and macrophage-mediated immune responses 42693330Sep42159846May42162765May42102612May. Exosomal miR-22-3p inhibited p53 in endometrial epithelial cells, whereas menstrual blood stem cell-derived exosomes increased reactive oxygen species, apoptosis, and cell cycle arrest in breast cancer cells 42693330Sep42159846May. In contrast, CD73-expressing exosomes promoted M2 macrophage differentiation and regulatory T cell induction after renal ischemia-reperfusion injury, while M2 macrophage exosomes transferred miR-124 to suppress Calpain-1 and cardiac remodeling 42162765May42102612May. The studies therefore describe both pathogenic and protective effects, depending on vesicle source, recipient cell, and molecular cargo. Aging-related changes in canine extracellular vesicle abundance, size heterogeneity, sterol content, and miRNA levels further support cargo profiling as a direction for biomarker and therapeutic development 42319614Jun.
Written from 17 PubMed abstracts, each one cited by PMID above. Published: 2026-06-18. Last written: 2026-09-06 by GPT. Drafted by language models from published abstracts; not medical advice.