| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
의료용 고분자 부문위원회 |
| 제목 |
Synthesis, characterization, and in vivo applications of hyaluronic acid immobilized gold nanoprobes for the diagnosis of rheumatoid arthritis and tumor |
| 초록 |
We describe a new class of multifunctional gold nanoprobes for ultra-sensitive optical detection of reactive oxygen species (ROS) and hyaluronidase (HAdase). The nanoprobes were fabricated by end-immobilizing fluorescence dye labeled hyaluronic acid (HA) onto the surface of gold nanoparticles (AuNPs). The nanoprobes effectively induced nanoparticle surface energy transfer (NSET) between NIRF dyes and AuNPs. When the surface immobilized HA was cleaved by ROS and HAdase, strong fluorescence recovery signals were attained with extreme sensitivity. In live animal models of rheumatoid arthritis (RA) and metastatic tumor, local arthritic inflammation and tumor sites were clearly identified upon systemic injection of the nanoprobes. These results suggest the gold nanoprobes can be exploited not only as in vitro molecular and cellular imaging sensors for ROS and HAdase, but also as in vivo optical imaging agents for detection of local HA degrading diseases such as RA and tumor. |
| 저자 |
이혁진, 이규리, 김인경, 박태관
|
| 소속 |
한국과학기술원 |
| 키워드 |
hyaluronic acid; gold nanoparticles; arthritis; tumor; imaging
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| E-Mail |
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