Aptamer Microarray Mediated Capture and Mass Spectrometry Identification of Biomarker in Serum Samples
- Authors
- Ahn, JY[Ahn, Ji-Young]; Lee, SW[Lee, Sang Wook]; Kang, HS[Kang, Hye Suk]; Jo, M[Jo, Minjoung]; Lee, DK[Lee, Dong-ki]; Laurell, T[Laurell, Thomas]; Kim, S[Kim, Soyoun]
- Issue Date
- Nov-2010
- Publisher
- AMER CHEMICAL SOC
- Keywords
- aptamer microarray; sol-gel immobilization; sandwich assay; biomarkers; ESI MS/MS mass spectrometry
- Citation
- JOURNAL OF PROTEOME RESEARCH, v.9, no.11, pp.5568 - 5573
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PROTEOME RESEARCH
- Volume
- 9
- Number
- 11
- Start Page
- 5568
- End Page
- 5573
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/72953
- DOI
- 10.1021/pr100300t
- ISSN
- 1535-3893
- Abstract
- Sensitive detection of molecular biomarkers in clinical samples is crucially important in disease diagnostics. This paper reports the developement of an aptamer microarray platform combined with sol-gel technology to identify low-abundance targets in complex serum samples. Because of the nanoporous structure of the sol-gel, a high capacity to immobilize the affinity specific aptamers is accomplished which allows binding and detection of target molecules with high sensitivity. The captured protein is digested in situ and the obtained digest was analyzed by ESI-MS without any interference from the affinity probe. TBP (TATA Box Protein) and its specific aptamers were chosen as a model system. A proof of concept with protein concentrations ranging between nanomolar to micromolar is reported, showing a good linearity up to 400 nM when characterized in an aptamer sandwich assay. Moreover, as low as 0.001% of target protein present in total serum proteins could be identified without any pretreatment step using ESI MS/MS mass spectrometry. We believe this novel strategy could become an efficient method for aptamer-based biomarker detection linked directly to mass spectrometry readout.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Science > Department of Chemistry > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/72953)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.