A novel nanofluidic system for high-throughput preparation of exosome-based drug supply automobiles


Sep 06, 2021

(Nanowerk News) A analysis group led by Prof. YANG Hui from the Shenzhen Institute of Advanced Technology (SIAT) of the Chinese Academy of Sciences reported a novel nanofluidic system for high-throughput preparation of exosome-based drug supply automobiles. Their examine was printed in Small (“A High-Throughput Nanofluidic Device for Exosome Nanoporation to Develop Cargo Delivery Vehicles”). Exosomes are organic nanoparticles which might be secreted into extracellular space or physique fluid by virtually all cell sorts, with a diameter of about 30 ~ 200 nm. Since exosomes exhibit a naturally derived composition and performance as intercellular communication instruments, they’ve nice potential as sensible automobiles for cargo supply. However, the generally used strategies to organize exosomes that carry desired cargos undergo from low loading effectivity and extreme damages on each exosomes and their cargos. In this examine, Prof. YANG’s group proposed a high-throughput nanofluidic system named “exosome nanoporator (ENP)”, which may load quite a lot of exogenous cargos into exosomes. Schematic illustration of an exosome nanoporator to organize cargo-carrying exosomes. (¬© Small) (click on on picture to enlarge) The ENP can precisely management the traits of fluid in nanoscale by nanofluidic expertise, in order to comprehend extremely controllable preparation situations of exosome-based drug supply automobiles. Moreover, nanofluidic channels with exact geometries have been manufactured, realizing 30,000 modules working in parallel in a single system. By transporting exosomes by means of the nanochannels, exosome membranes are permeabilized by mechanical compression and fluid shear, producing transient nanopores on the exosome membranes and permitting inflow of cargo molecules into exosomes from surrounding answer whereas sustaining exosome integrity. The researchers chosen a clinically accredited chemotherapeutic antitumor drug, i.e. doxorubicin hydrochloride, because the cargo mannequin, and confirmed that the ENP can effectively load it into exosomes. “We find that the exosomes treated by the ENP can deliver their drug cargos to human non-small cell lung cancer cells and induce cell death. This indicates potential opportunities of the device for developing new exosome-based delivery vehicles for medical and biological applications,” mentioned Prof. YANG. In the longer term, this new technique is anticipated to develop right into a platform to load totally different exogenous substances with organic significance and medical therapeutic results into exosomes.

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