Detection of HER2 through Antibody Immobilization Is Influenced by the Properties of the Magnetite Nanoparticle Coating

Considerable effort has been focused on improving the control of size, shape, and surface modifications to detect proteins. The purposeofthisstudywastocomparetheefficienciesofaminosilane-coatedmagnetite(As-M)nanoparticles(NPs),dextran-coated magnetitenanoparticles(Dx-M),andbarenanoparticlesforconjug...

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Bibliographic Details
Main Authors: Villegas Serralta, Enrique, Zavala, Oscar, Flores Urquizo, Israel Alejandro, García Casillas, Perla E., Chapa González, Christian
Format: Article
Language:English
Published: 2018
Online Access:http://eprints.uanl.mx/17415/1/275.pdf
Description
Summary:Considerable effort has been focused on improving the control of size, shape, and surface modifications to detect proteins. The purposeofthisstudywastocomparetheefficienciesofaminosilane-coatedmagnetite(As-M)nanoparticles(NPs),dextran-coated magnetitenanoparticles(Dx-M),andbarenanoparticlesforconjugatingsingle-chainvariablefragmentantibodies(scFvs)withthe aim of detecting the human epidermal growth factor receptor 2 (HER2) protein. Dx-M and As-M NPs were characterized using scanningelectronmicroscopy,energydispersiveX-rayspectroscopy,X-raydiffraction,andRamanspectroscopy.Dx-MandAs-M wereconjugatedwithamonoclonalscFvforactivetargetingoftheHER2antigen.AminosilanesurfacecoatingenhancedthescFv conjugationefficiencyovertwofoldcomparedtothatofthedextran-coatedmagnetiteNPsforthedetectionofHER2proteins.