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Light-induced immobilization of biomolecules as an attractive alternative to micro-droplet dispensing-based arraying technologies

Publiceringsår: 2008
Språk: Engelska
Sidor: 1113-1113
Publikation/Tidskrift/Serie: Proteomics
Volym: 7
Nummer: 19
Dokumenttyp: Artikel i tidskrift
Förlag: John Wiley & Sons


The present work shows how UV light-induced molecular immobilisation (LIMI) of biomolecules onto thiol reactive surfaces can be used to make biosensors, without the need for traditional microdispensing technologies. Using LIMI, arrays of biomolecules can be created with a high degree of reproducibility. This technology can be used to circumvent the need for often expensive nano/microdispensing technologies. The ultimate size of the immobilised spots is defined by the focal area of the UV beam, which for a diffraction-limited beam can be less than 1 m in diameter. LIMI has the added benefit that the immobilised molecules will be spatially oriented and covalently bound to the surface. The activity of the sensor molecules is retained. Antibody sensor arrays made using LIMI demonstrated successful antigen binding. In addition, the pattern of immobilised molecules on the surface is not restricted to conventional array formats. The ultimate consequence of the LIMI is that it is possible to write complex protein patterns using bitmaps at high resolution onto substrates. Thus, LIMI of biomolecules provides a new technological platform for biomolecular immobilisation and the potential for replacing present microdispensing arraying technologies.


  • Immunology in the medical area


  • ISSN: 1615-9861

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