Abstract
Watson-Crick base-pairing of DNA allows the nanoscale fabrication of biocompatible synthetic nanostructures for diagnostic and therapeutic biomedical purposes. DNA nanostructure design elicits exquisite control of shape and conformation compared to other nanoparticles. Furthermore, nucleic acid aptamers can be coupled to DNA nanostructures to allow interaction and response to a plethora of biomolecules beyond nucleic acids. When compared to the better-known approach of using protein antibodies for molecular recognition, nucleic acid aptamers are bespoke with the underlying DNA nanostructure backbone and have various other stability, synthesis, and cost advantages. Here, we provide detailed methodologies to synthesize and characterize aptamer-enabled DNA nanostructures. The methods described can be generally applied to various designs of aptamer-enabled DNA nanostructures with a wide range of applications both within and beyond biomedical nanotechnology.
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Acknowledgments
J.A.T. acknowledges funding provided by the Hong Kong University Grants Council General Research Fund Grants (17127515, 17163416 and 17102318). L.S.S. acknowledges Professors Angela R. Wu and H. Tom Soh, Dr. Jianpeng Wang, and Kaitlin H.Y. Chan for their support and assistance. L.S.S. is funded by the Hong Kong Innovation and Technology Commission (ITS/350/16) and a Junior Fellowship from the Hong Kong Jockey Club Institute for Advanced Study at the Hong Kong University of Science and Technology. C.K.K. acknowledges support from Shenzhen Basic Research Project [JCYJ20180507181642811]; Research Grants Council of the Hong Kong SAR, China Projects [CityU 11100421, CityU 11101519, CityU 11100218, N_CityU110/17, CityU 21302317]; Croucher Foundation Project [9500030, 9509003]; the State Key Laboratory of Marine Pollution Director Discretionary Fund; and City University of Hong Kong projects [6000711, 7005503, 9667222, 9680261]. E.C.M.T. acknowledges the Croucher Foundation, the HK RGC (HKU JLFS/P-704/18; E-HKU704/19; ECS 27301120), the EU (Horizon 2020: SABYDOMA – 862296), the PRC NSFC (22002132), and the HK ITC (Health@InnoHK Program: Laboratory for Synthetic Chemistry and Chemical Biology).
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Shiu, S.CC. et al. (2023). Aptamers as Functional Modules for DNA Nanostructures. In: Valero, J. (eds) DNA and RNA Origami. Methods in Molecular Biology, vol 2639. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3028-0_17
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DOI: https://doi.org/10.1007/978-1-0716-3028-0_17
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