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Semi-permeable capsules enable parallel cultivation and live microscopic observations of microbial eukaryotes

Fantini, M.; Brask, N.; Paraskevopoulou, S.; Itriago, H.; Musaev, R.; Boisard, J.; Aguilera-Campos, K. I.; Stairs, C. W.

2026-04-03 microbiology
10.64898/2026.04.02.716075 bioRxiv
Show abstract

Semi-permeable capsules (SPCs) create enclosed porous microenvironments, diffusible to only small proteins and macromolecules. This presents a powerful tool for single cell observation, isolation, and sequencing. However, their range of use for sustaining viable microbial eukaryotes is largely unexplored. Single-cell eukaryotes are often understudied, with a wealth of unknown lifecycles, culturing methods and inter-microbial interactions, which are difficult to visualize. Here, we show that eukaryotes from eight different supergroups can be captured and propagated in SPCs. Encapsulation allowed observations of cell stages, motility and growth in a traceable and parallelized manner.

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