Polydiacetylene Liposome Microarray Toward Influenza A Virus Detection: Effect of Target Size on Turn-On Signaling
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- Polydiacetylene Liposome Microarray Toward Influenza A Virus Detection: Effect of Target Size on Turn-On Signaling
- Seo, Sungbaek; Lee, Jiseok; Choi, Eun-Jin; Kim, Eun-Ju; Song, Jae-Young; Kim, Jinsang
- conjugated polymers; influenza A virus; liposome microarray; sensors; target size
- Issue Date
- WILEY-V C H VERLAG GMBH
- MACROMOLECULAR RAPID COMMUNICATIONS, v.34, no.9, pp.743 - 748
- Target size effect on the sensory signaling intensity of polydiacetylene (PDA) liposome microarrays was systematically investigated. Influenza A virus M1 peptide and M1 antibody were selected as a probetarget pair. While red fluorescence from the PDA liposome microarrays was observed when the larger M1 antibody was used as a target, when the same M1 antibody was used as a probe to detect the smaller M1 peptide sensory signal did not appear. The results reveal that the intensity of the PDA sensory signal is mainly related to the steric repulsion between probetarget complexes not the strength of the probetarget binding force. Based on this finding, we devised a PDA sensory system that directly detects influenza A whole virus as a larger target, and confirmed the target size effect on the signaling efficiency of PDA.
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