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Park, Tae Joo
Developmental Morphogenesis Lab
Research Interests
  • Morphogenesis, chondrogenesis, ciliogenesis

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A Recombinant Secondary Antibody Mimic as a Target-specific Signal Amplifier and an Antibody Immobilizer in Immunoassays

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Title
A Recombinant Secondary Antibody Mimic as a Target-specific Signal Amplifier and an Antibody Immobilizer in Immunoassays
Author
Min, JunseonSong, Eun KyungKim, HansolKim, Kyoung TaekPark, Tae JooKang, Sebyung
Keywords
CATALYZED REPORTER DEPOSITION; PROTEIN CAGE; EP-CAM; THERAPY; CANCER; DOMAIN; AMPLIFICATION; NANOPLATFORM; EXPRESSION; ASSAY
Issue Date
201604
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.6, no., pp.24159 -
Abstract
We construct a novel recombinant secondary antibody mimic, GST-ABD, which can bind to the Fc regions of target-bound primary antibodies and acquire multiple HRPs simultaneously. We produce it in tenth of mg quantities with a bacterial overexpression system and simple purification procedures, significantly reducing the manufacturing cost and time without the use of animals. GST-ABD is effectively conjugated with 3 HRPs per molecule on an average and selectively bind to the Fc region of primary antibodies derived from three different species (mouse, rabbit, and rat). HRP-conjugated GST-ABD (HRP-GST-ABD) is successfully used as an alternative to secondary antibodies to amplify target-specific signals in both ELISA and immunohistochemistry regardless of the target molecules and origin of primary antibodies used. GST-ABD also successfully serves as an anchoring adaptor on the surface of GSH-coated plates for immobilizing antigen-capturing antibodies in an orientation-controlled manner for sandwich-type indirect ELISA through simple molecular recognition without any complicated chemical modification.
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DOI
http://dx.doi.org/10.1038/srep24159
ISSN
2045-2322
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