Differential Protein and Glycan Packaging into Extracellular Vesicles in Response to 3D Gastric Cancer Cellular Organization

Research Overview

Altered glycosylation is a hallmark of cancer, producing aberrant glycans on tumor cells, and extracellular vesicles — which carry several known tumor-associated glycans — mediate communication that shapes progression. Whether 3D tumor architecture changes which glycans get packaged into vesicles had never been examined.

Gastric cancer cell lines with differing glycosylation were cultured as conventional 2D monolayers and in 3D, and their vesicle production, release, proteomic content, and specific glycan cargo were compared. Although the vesicle proteomes were broadly similar between formats, spatial organization altered how specific glycans were packaged — evidence that culture dimensionality affects vesicle cargo.