DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ryu, Jungki | ko |
dc.contributor.author | Joung, Hyou-Arm | ko |
dc.contributor.author | Kim, Min-Gon | ko |
dc.contributor.author | Park, Chan Beum | ko |
dc.date.accessioned | 2008-07-15T01:48:39Z | - |
dc.date.available | 2008-07-15T01:48:39Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2008-04 | - |
dc.identifier.citation | ANALYTICAL CHEMISTRY, v.80, no.7, pp.2400 - 2407 | - |
dc.identifier.issn | 0003-2700 | - |
dc.identifier.uri | http://hdl.handle.net/10203/5809 | - |
dc.description.abstract | We analyzed the aggregation of Alzheimer's beta-amyloid (1-42) (A beta 42) peptides from fresh monomers to fully grown fibrils by using in situ surface plasmon resonance (SPR) spectrometry and ex situ atomic force microscopy (AFM). To immobilize A beta 42 peptide on an SPR chip surface, different carboxy-terminated surfaces were investigated: (1) self-assembled monolayer of 11-mercaptoundecanoic acid and (2) carboxylated dextran-modified surface. It was found that the carboxylated dextran surface was more appropriate due to a much lower degree of nonspecific binding. By using the carboxylated dextran surface, we further investigated effects of key environmental factors, such as the density of surface-bound A beta 42, the concentration of A beta 42 in solution phase, and the presence of Fe3+ ions on A beta 42 fibrillation. The increase in either the surface density of A beta 42 or its concentration in incubation solution highly accelerated the formation of amyloid fibrils on the chip surface. The presence of Fe3+ ions in the incubation solution induced significantly denser aggregates, resulting in a nearly 6-fold increase of SPR angle shift. This work shows that SPR analysis coupled with AFM can be effectively used for analyzing amyloid aggregation and deposition on a solid surface from the very beginning to fully grown fibrils. | - |
dc.description.sponsorship | This study was supported by the Korea Research Foundation (Grant No. KRF-2006-D00078) and the National R&D Program from the Ministry of Science and Technology (Grant No. 2007-04379). | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Amer Chemical Soc | - |
dc.subject | ATOMIC-FORCE MICROSCOPY | - |
dc.subject | SENILE PLAQUE CORES | - |
dc.subject | BIOLOGICAL MACROMOLECULES | - |
dc.subject | PEPTIDE | - |
dc.subject | PROTEIN | - |
dc.subject | DISEASE | - |
dc.subject | SENSORS | - |
dc.subject | BINDING | - |
dc.subject | PROBE | - |
dc.subject | GOLD | - |
dc.title | Surface plasmon resonance analysis of Alzheimer's beta-amyloid aggregation on a solid surface: From monomers to fully-grown fibrils | - |
dc.type | Article | - |
dc.identifier.wosid | 000254593500020 | - |
dc.identifier.scopusid | 2-s2.0-41849116004 | - |
dc.type.rims | ART | - |
dc.citation.volume | 80 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 2400 | - |
dc.citation.endingpage | 2407 | - |
dc.citation.publicationname | ANALYTICAL CHEMISTRY | - |
dc.identifier.doi | 10.1021/ac7019514 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Park, Chan Beum | - |
dc.contributor.nonIdAuthor | Ryu, Jungki | - |
dc.contributor.nonIdAuthor | Joung, Hyou-Arm | - |
dc.contributor.nonIdAuthor | Kim, Min-Gon | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ATOMIC-FORCE MICROSCOPY | - |
dc.subject.keywordPlus | SENILE PLAQUE CORES | - |
dc.subject.keywordPlus | BIOLOGICAL MACROMOLECULES | - |
dc.subject.keywordPlus | PEPTIDE | - |
dc.subject.keywordPlus | PROTEIN | - |
dc.subject.keywordPlus | DISEASE | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | BINDING | - |
dc.subject.keywordPlus | PROBE | - |
dc.subject.keywordPlus | GOLD | - |
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