期刊
NATURE METHODS
卷 11, 期 12, 页码 1253-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NMETH.3170
关键词
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资金
- US National Institutes of Health [U54 GM103511, P41 GM109824, P41 GM103314, AI072529-08, AI037526-20A1]
- Howard Hughes Medical Institute
- Natural Sciences and Engineering Research Council of Canada, Canadian Institutes of Health Research
- Fonds de recherches du Quebec - Sante
Nanobodies are single-domain antibodies derived from the variable regions of Camelidae atypical immunoglobulins. They show promise as high-affinity reagents for research, diagnostics and therapeutics owing to their high specificity, small size (similar to 15 kDa) and straightforward bacterial expression. However, identification of repertoires with sufficiently high affinity has proven time consuming and difficult, hampering nanobody implementation. Our approach generates large repertoires of readily expressible recombinant nanobodies with high affinities and specificities against a given antigen. We demonstrate the efficacy of this approach through the production of large repertoires of nanobodies against two antigens, GFP and mCherry, with K-d values into the subnanomolar range. After mapping diverse epitopes on GFP, we were also able to design ultrahigh-affinity dimeric nanobodies with Kd values as low as similar to 30 pM. The approach presented here is well suited for the routine production of high-affinity capture reagents for various biomedical applications.
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