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Press Release

3/31/2016

 
KAIST, 빛과 열로 신경세포 활성 억제 성공

빛과 열로 신경세포 활성을 억제할 수 있는 길이 열렸다.

KAIST는 남윤기·박지호 바이오 및 뇌공학과 교수 연구팀이 신경세포 활성을 억제할 수 있는 새로운 플랫폼을 개발했다고 30일 밝혔다. 뇌기능 연구와 뇌질환 치료에 활용될 것으로 기대된다.

연구결과는 최근 나노분야 국제학술지 `에이시에스 나노(ACS Nano)` 온라인판에 게재됐다.

연구팀은 근적외선을 선택적으로 흡수하는 금 나노막대를 합성한 후 생체 친화성을 갖는 중합체(polymer)로 코팅해 신경세포 칩 표면에 결합했다. 신경세포 칩 상 금속 전극은 금 나노막대가 결합한 후에도 전기적 특성이 변하지 않아 신경세포 활성 측정에 적합하다.

연구팀은 전기적으로 신경세포 활성을 측정하는 동시에 광열 자극으로 신경세포 활성을 억제한다는 것을 확인했다. 이 기술은 유전자 조작 없이도 빛으로 활성 조절이 가능하다.

남윤기 교수는 “나노입자와 신경세포를 결합해 새로운 자극 플랫폼을 제시했다”며 “기존 전기적 신경 시스템을 활용하는 동시에 광열 자극으로 신경세포 활성을 자유롭게 억제할 수 있다”고 말했다.

KAIST 언론보도 press release (link)
전자신문 (link) (pdf)
동아사이언스 (link) 
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Publication: ACS Nano

3/10/2016

 
Electro-optical Neural Platform Integrated with Nanoplasmonic Inhibition Interface

Sangjin Yoo, Raeyoung Kim, Ji-Ho Park*, Yoonkey Nam*

​This is our second paper on optical neural inhibition technique based on gold-nanorods and near-infrared light. This work was led by Sangjin who was co-advised by Prof. Nam and Prof. Ji-Ho Park.
Gold-nanorod was integrated with planar-type micro electrode array so that both electrical recording/stimulation and optical inhibition were possible in one platform. (Link)

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Korea Advanced Institute of Science and Technology (KAIST)
291 Daehak-ro, Yuseong-gu

Daejeon 34141, Republic of Korea
https://www.kaist.ac.kr

Phone: +82-42-350-5362
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