Optical biosensors based on noble nanostructures currently receive attention due to their highly efficient, simultaneous analysis of a number of important biomolecules from proteomics to genomics. In this report, the combination of localized surface plasmon resonance (LSPR) with interferometry in the relative reflected intensity (RRI) spectrum of the gold capped oxide nanostructure was thoroughly exploited for label-free detection of aptamer-protein interactions. The fabrication of gold capped oxide nanostructure involved the deposition of gold on the surface of porous anodic alumina (PAA) layer chip. This novel nanomaterial enabled to simultaneously monitor the changes in both LSPR and interferometric characteristics since the biomolecular interactions occur. After immobilizing the aptamer I on the chip surface, our sensor could be applied easily for specific detection of thrombin and aptamer II with a limit of detection of 1 nM thrombin in the sample. Our optical biosensing devices connecting with the gold capped oxide nanostructure has a high potential to highly sensitive monitoring the other biomolecular interactions, such as protein-protein interactions, DNA-protein interactions, DNA-DNA hybridizations, and ligand-receptor with a massively parallel detection capability in a high-throughput system. [This work was supported in part by the IT Leading R&D Support Project from the Ministry of Knowledge Economy through KEIT].
Tae Jung PARK [ BioProcess Engineering Research Center, Center for Systems & Synthetic Biotechnology, and Institute for BioCentury, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Korea. ]
Do-Kyun KIM [ BioProcess Engineering Research Center, Center for Systems & Synthetic Biotechnology, and Institute for BioCentury, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Korea. ]
Sang Yup LEE [ BioProcess Engineering Research Center, Center for Systems & Synthetic Biotechnology, and Institute for BioCentury, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Korea. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동