Fabrication of a hydrophobic/hydrophilic hybrid-patterned microarray chip and its application to a cancer marker immunoassay
- Title
- Fabrication of a hydrophobic/hydrophilic hybrid-patterned microarray chip and its application to a cancer marker immunoassay
- Other Titles
- hydrophilic hybrid-patterned microarray chip and its application to a cancer marker immunoassay
- Author
- 주재범
- Keywords
- Hydrophobic/hydrophilic pattern; SAM; Microarray; Immunoassay; Angiogenin
- Issue Date
- 2012-05
- Publisher
- Korean Biochip Society
- Citation
- Biochip Journal, 2012, 6(1), P.10-16
- Abstract
- In this work, we report on a simple process for fabricating a hydrophobic/hydrophilic hybrid-patterned microarray chip for a fast and sensitive immunoassay. Two different types of self-assembled monolayers (SAMs) were used in the fabrication of hydrophilic well patterns and hydrophobic substrates. The hydrophilic/hydrophobic hybrid SAM pattern generates a clear-cut boundary between the sample and the background. A change in the precursor molecules allows for many different. types of SAMs to be employed in the fabrication process. Fluorescence image-based detection has previously been used for the quantitative immune-analysis of a specific cancer marker. Here, a titanium-coated glass substrate was utilized to suppress auto-fluorescence signals from substrate backgrounds. Angiogenin (ANG), a small polypeptide implicated in both angiogenesis and tumor growth, was used as a target cancer marker for its validation. Assay results demonstrate that the hybrid-patterned array chip yields a narrower error deviation and a lower coefficient variation than in a conventional 96-well plate ELISA. Furthermore, the sample requirement (1 mu L) for the hybrid-patterned chip is about 50 times less than that required in an ELISA (at least 50 mu L). The proposed hydrophobic/hydrophilic hybrid-patterned microarray chip is expected to be a highly efficient tool that can be applied to a high throughput immunoassay of a specific cancer marker.
- URI
- http://link.springer.com/article/10.1007%2Fs13206-012-6102-yhttps://repository.hanyang.ac.kr/handle/20.500.11754/70106
- ISSN
- 1976-0280
- DOI
- 10.1007/s13206-012-6102-y
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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