Exosome cargo

Exosomes are a subset of extracellular vesicles, typically 30 to 150 nanometers in diameter, that serve as critical mediators of intercellular communication by transporting functional cargo such as proteins, lipids, and various RNA species (Kalluri & LeBleu, Science 2020). The designation 'multiple intracellular pathways via exosome cargo' refers to a therapeutic mechanism where the clinical effect is derived from the integrated action of these diverse molecules on recipient cell signaling networks, rather than a single molecular target (Zhang et al., Journal of Hematology & Oncology 2019). This pleiotropic approach is common in regenerative medicine, particularly with mesenchymal stem cell-derived exosomes, which can simultaneously influence inflammation, apoptosis, and tissue repair (Théry et al., Journal of Extracellular Vesicles 2018). In oncology, engineered exosomes are being developed by companies like Codiak BioSciences to deliver specific therapeutic payloads, such as STING agonists or IL-12, directly to the tumor microenvironment to trigger complex immune responses (Codiak BioSciences, 2023). Because the cargo is inherently complex and can affect numerous downstream pathways, defining a precise pharmacological mechanism of action remains a significant challenge for drug development and regulatory approval.

Other names

Extracellular vesicle cargoExosomal cargoEV-mediated signalingExosome-derived bioactive molecules

Delivery of a heterogeneous mixture of bioactive molecules, including microRNAs, messenger RNAs, proteins, and lipids, to recipient cells to simultaneously modulate multiple intracellular signaling pathways.