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Protein G를 포함하는 수정미소저울 센서 칩과 정제되지 않은 항혈청을 이용한 헵토글로빈과 트랜스페린의 면역분석

Immunoassay of haptoglobin and transferrin with proteinG-containing QCM sensor chip and unpurified antiserum


Quartz crystal microbalance immunosensor has a capacity to perform a label-free and real time detection of a trace amount of analyte through the specific interaction between antibody and antigen. However, immobilization of antibody molecules on the sensor surface is a troublesome procedure for researchers who are not experienced in chemistry. Protein G has a specific affinity to antibody and would serve as a capturing agent for antibody when immobilized on the sensor surface. In this work, we prepared a protein G sensor chip by immobilizing protein G on the surface of quartz crystal microbalance and examined its capability to detect human haptoglobin or human transferrin with unpurified corresponding antiserum. Specific and dose dependent response was observed when the protein G chip was used for detection of antigens after saturated with antiserum. We also verified several advantageous aspects of the protein G chip such as improved flexibility and sensitivity.

참고문헌 (14)

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이 논문을 인용한 문헌 (2)

  1. Kim, Sung-Il ; Ha, In-Young ; Choi, Suk-Jung 2009. "Detection of human and bovine haptoglobin by using quartz crystal microbalance sensor chip containing secondary antibody" 센서학회지 = Journal of the Korean Sensors Society, 18(2): 160~167 
  2. Sin, Eun-Jung ; Sohn, Young-Ho ; Sohn, Young-Soo 2010. "A comparison of detection capabilities of anti-IgG immobilizedby protein G and NHS" 센서학회지 = Journal of the Korean Sensors Society, 19(2): 142~148 


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