Journal
NANO RESEARCH
Volume 8, Issue 3, Pages 887-899Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0570-4
Keywords
cell release; ferrocene/beta-cyclodextrin; AS1411; graphene
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Funding
- National Basic Research Program of China (973 Program) [2011CB936004, 2012CB720602]
- National Natural Science Foundation of China (NSFC) [21210002, 91213302]
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Here we report a dual-functionalized electrochemical substrate to trigger cancer cells release based on the supramolecular interaction between beta-cyclodextrin (beta-CD) and Fc on clinical trial II aptamer AS1411 functionalized graphene platform. On one hand, the host-guest interaction can be reversible electrochemically controlled to realize cancer cells capture/release, and 1-adamantylamine binding can further amplify this surface change by competing interaction with beta-CD. On the other hand, the AS1411 aptamer and its complementary DNA (cDNA) also can be used as a switchable anchor for cell adhesion. Our work gives an example for label-free, multi-functionalized triggered cell release based on aptamer and beta-CD/graphene-modified surface and this multi-ways for cell catch-and-release on graphene modified surface also provides their potential biomedical application.
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