Microfluidic reflectometric interference spectroscopy-based sensing for exploration of protein–protein interaction conditions
A microfluidic reflectometric interference spectroscopy (RIfS) system was adopted for the investigation of protein–protein interaction (PPI). The influence of reaction conditions (pH and temperature) on the antigen–antibody reaction of alpha-fetoprotein (AFP) and its monoclonal antibody (anti-AFP) a...
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| Veröffentlicht in: | Biosensors & bioelectronics 2013-02, Vol.40 (1), p.247-251 |
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| creator | Kurihara, Yoshikazu Takama, Masaaki Masubuchi, Manami Ooya, Tooru Takeuchi, Toshifumi |
| description | A microfluidic reflectometric interference spectroscopy (RIfS) system was adopted for the investigation of protein–protein interaction (PPI). The influence of reaction conditions (pH and temperature) on the antigen–antibody reaction of alpha-fetoprotein (AFP) and its monoclonal antibody (anti-AFP) as a model of PPI was investigated in real time with a label-free fusion, where anti-AFP was covalently immobilized on the carboxylated silicon nitride sensor chips via amide bonds. Optimal pH and temperature were rapidly found by successive and alternate injections of AFP and the regeneration solution (glycine-HCl, pH 1.5) onto the anti-AFP immobilized sensor chip. The resultant optimized reaction conditions (30°C, pH 5.0) gave a 10 times higher detection limit, compared with the response under the commonly employed conditions (25°C, pH 7.4). The proposed system was revealed to provide rapid tracking response against the change in temperature and pH. Consequently, the proposed RIfS system has a potential for the effective tool towards PPI analyses. |
| doi_str_mv | 10.1016/j.bios.2012.07.032 |
| format | Article |
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The influence of reaction conditions (pH and temperature) on the antigen–antibody reaction of alpha-fetoprotein (AFP) and its monoclonal antibody (anti-AFP) as a model of PPI was investigated in real time with a label-free fusion, where anti-AFP was covalently immobilized on the carboxylated silicon nitride sensor chips via amide bonds. Optimal pH and temperature were rapidly found by successive and alternate injections of AFP and the regeneration solution (glycine-HCl, pH 1.5) onto the anti-AFP immobilized sensor chip. The resultant optimized reaction conditions (30°C, pH 5.0) gave a 10 times higher detection limit, compared with the response under the commonly employed conditions (25°C, pH 7.4). The proposed system was revealed to provide rapid tracking response against the change in temperature and pH. 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Consequently, the proposed RIfS system has a potential for the effective tool towards PPI analyses.</description><subject>Biological and medical sciences</subject><subject>Biosensing Techniques - instrumentation</subject><subject>Biosensors</subject><subject>Biotechnology</subject><subject>Equipment Design</subject><subject>Equipment Failure Analysis</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Immunoassay - instrumentation</subject><subject>Immunosensor</subject><subject>Label-free detection</subject><subject>Methods. Procedures. Technologies</subject><subject>Microfluidic Analytical Techniques - instrumentation</subject><subject>Microfluidics</subject><subject>Photometry - instrumentation</subject><subject>Protein Interaction Mapping - instrumentation</subject><subject>Protein–protein interaction</subject><subject>Reflectometric interference</subject><subject>Refractometry - instrumentation</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Spectrum Analysis - instrumentation</subject><subject>Various methods and equipments</subject><issn>0956-5663</issn><issn>1873-4235</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kc-KFDEQh4Mo7uzqC3iQvgheuq3834AXWXQVVrzoOaSTimTo6YxJj-ye9B18Q5_EtDPqzVMq1Fc_iq8IeUJhoEDVi-0wplwHBpQNoAfg7B7Z0EvNe8G4vE82YKTqpVL8jJzXugUATQ08JGeMA4UWsSHf3idfcpwOKSTfFYwT-iXvcCntm-YFS8SCs8eu7lun5Orz_q4fXcXQVZxrmj93MZcOb_dTLm5Jee5y7PYlL5jmn99_nKpjmPO_AZ_nkNaqPiIPopsqPj69F-TTm9cfr972Nx-u3129uum9uDRLL5Q3xkUeoogYOYLhIA0bQQqpjRCKIRdspBC1kZJyByZQz3gEHaQSgV-Q58fcts6XA9bF7lL1OE1uxnyollJJNYBSoqHsiDYxtTYldl_SzpU7S8Gu4u3WruLtKt6Ctk18G3p6yj-MOwx_R_6YbsCzE-Cqd1Msbvap_uOU1tpQ2riXRw6bja8Ji60-rQcIqbQD2JDT__b4BYakpXQ</recordid><startdate>20130215</startdate><enddate>20130215</enddate><creator>Kurihara, Yoshikazu</creator><creator>Takama, Masaaki</creator><creator>Masubuchi, Manami</creator><creator>Ooya, Tooru</creator><creator>Takeuchi, Toshifumi</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20130215</creationdate><title>Microfluidic reflectometric interference spectroscopy-based sensing for exploration of protein–protein interaction conditions</title><author>Kurihara, Yoshikazu ; Takama, Masaaki ; Masubuchi, Manami ; Ooya, Tooru ; Takeuchi, Toshifumi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c489t-46c99af3df4fef3e0930592b0545794462e342b10f795513a09d1c23f07d564d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Biological and medical sciences</topic><topic>Biosensing Techniques - instrumentation</topic><topic>Biosensors</topic><topic>Biotechnology</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Fundamental and applied biological sciences. 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The influence of reaction conditions (pH and temperature) on the antigen–antibody reaction of alpha-fetoprotein (AFP) and its monoclonal antibody (anti-AFP) as a model of PPI was investigated in real time with a label-free fusion, where anti-AFP was covalently immobilized on the carboxylated silicon nitride sensor chips via amide bonds. Optimal pH and temperature were rapidly found by successive and alternate injections of AFP and the regeneration solution (glycine-HCl, pH 1.5) onto the anti-AFP immobilized sensor chip. The resultant optimized reaction conditions (30°C, pH 5.0) gave a 10 times higher detection limit, compared with the response under the commonly employed conditions (25°C, pH 7.4). The proposed system was revealed to provide rapid tracking response against the change in temperature and pH. 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| subjects | Biological and medical sciences Biosensing Techniques - instrumentation Biosensors Biotechnology Equipment Design Equipment Failure Analysis Fundamental and applied biological sciences. Psychology Immunoassay - instrumentation Immunosensor Label-free detection Methods. Procedures. Technologies Microfluidic Analytical Techniques - instrumentation Microfluidics Photometry - instrumentation Protein Interaction Mapping - instrumentation Protein–protein interaction Reflectometric interference Refractometry - instrumentation Reproducibility of Results Sensitivity and Specificity Spectrum Analysis - instrumentation Various methods and equipments |
| title | Microfluidic reflectometric interference spectroscopy-based sensing for exploration of protein–protein interaction conditions |
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