Compartmentalized cross-linked enzymatic nano -aggregates (c -CLE n A) for efficient in-flow biocatalysis

M. Teresa de Martino, Fabio Tonin, N. Amy Yewdall, Mona Abdelghani, David S. Williams, Ulf Hanefeld, Floris P.J.T. Rutjes, Loai K.E.A. Abdelmohsen (Corresponding author), Jan C.M. van Hest (Corresponding author)

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Nano-sized enzyme aggregates, which preserve their catalytic activity are of great interest for flow processes, as these catalytic species show minimal diffusional issues, and are still sizeable enough to be effectively separated from the formed product. The realization of such catalysts is however far from trivial. The stable formation of a micro-to millimeter-sized enzyme aggregate is feasible via the formation of a cross-linked enzyme aggregate (CLEA); however, such a process leads to a rather broad size distribution, which is not always compatible with microflow conditions. Here, we present the design of a compartmentalized templated CLEA (c-CLEnA), inside the nano-cavity of bowl-shaped polymer vesicles, coined stomatocytes. Due to the enzyme preorganization and concentration in the cavity, cross-linking could be performed with substantially lower amount of cross-linking agents, which was highly beneficial for the residual enzyme activity. Our methodology is generally applicable, as demonstrated by using two different cross-linkers (glutaraldehyde and genipin). Moreover, c-CLEnA nanoreactors were designed with Candida antarctica Lipase B (CalB) and Porcine Liver Esterase (PLE), as well as a mixture of glucose oxidase (GOx) and horseradish peroxidase (HRP). Interestingly, when genipin was used as cross-linker, all enzymes preserved their initial activity. Furthermore, as proof of principle, we demonstrated the successful implementation of different c-CLEnAs in a flow reactor in which the c-CLEnA nanoreactors retained their full catalytic function even after ten runs. Such a c-CLEnA nanoreactor represents a significant step forward in the area of in-flow biocatalysis.

Originele taal-2Engels
Pagina's (van-tot)2765-2769
Aantal pagina's5
TijdschriftChemical Science
Nummer van het tijdschrift10
StatusGepubliceerd - 7 feb. 2020


The authors acknowledge support from Horizon 2020 FET-Open program 737266 – ONE-FLOW. The Dutch Ministry of Education, Culture and Science (Gravitation program 024.001.035), the ERC Advanced Grant (Artisym 694120) and The European Union's Horizon 2020 research and Innovation programme Marie Skłodowska-Curie Innovative Training Networks (ITN) Nanomed, under Grant No 676137. A. J. Lopes is acknowledged for assistance with the preliminary experiments.

Horizon 2020 Framework Programme663830, 737266, 676137, 694120


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