David Finnskog
Lund University
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Publication
Featured researches published by David Finnskog.
Nanobiotechnology | 2005
Anton Ressine; David Finnskog; Johan Malm; Charlotte Becker; Hans Lilja; G. Marko–Varga; Thomas Laurell
To facilitate high-throughput biomarker discovery and high-density protein-chip array analyses of complex biological samples, a novel macro-and nanoporous silicon surface for protein microarrays was developed. The surface offers three-dimensional surface enlarging properties and spot confinement, enabling both high sensitivity bioassays and design of high density arrays. Reproducible manufacturing of the protein chip surface was accomplished as demonstrated by the low imprecision when standard IgG bioassays were performed at 100 pM antigen level on a series of protein chips scanned at widely different locations within a silicon wafer, as well as between different wafers from two different manufacturers. The relative standard deviation (RSD) of fluorescence spot intensity within an array on a chip was less than 20%. Mean spot intensity RSD was 19% for all 25 microarray chips in the study. Within-manufacturer-lot RSDs in chips from either manufacturer were <15% of mean spot intensity. The detection limit and dynamic range of the novel protein chip surface were examined to evaluate whether they match criteria required in a search for novel biomarkers such as for prostate cancer. Monoclonal IgG against prostate-specific antigen (PSA) was arrayed on the porous silicon chips. These were subsequently incubated in serum samples containing widely different levels of fluorescence-labeled PSA. Detection of PSA in serum at concentrations from 0.7 ng/mL (26 pM) up to 104-fold higher levels verified assay characteristics required in the search for prostate biomarkers (e.g., kallikrein gene products) at clinically relevant levels.To facilitate high-throughput biomarker discovery and high-density protein-chip array analyses of complex biological samples, a novel macro-and nanoporous silicon surface for protein microarrays was developed. The surface offers three-dimensional surface enlarging properties and spot confinement, enabling both high sensitivity bioassays and design of high density arrays. Reproducible manufacturing of the protein chip surface was accomplished as demonstrated by the low imprecision when standard IgG bioassays were performed at 100 pM antigen level on a series of protein chips scanned at widely different locations within a silicon wafer, as well as between different wafers from two different manufacturers. The relative standard deviation (RSD) of fluorescence spot intensity within an array on a chip was less than 20%. Mean spot intensity RSD was 19% for all 25 microarray chips in the study. Within-manufacturer-lot RSDs in chips from either manufacturer were <15% of mean spot intensity. The detection limit and dynamic range of the novel protein chip surface were examined to evaluate whether they match criteria required in a search for novel biomarkers such as for prostate cancer. Monoclonal IgG against prostate-specific antigen (PSA) was arrayed on the porous silicon chips. These were subsequently incubated in serum samples containing widely different levels of fluorescence-labeled PSA. Detection of PSA in serum at concentrations from 0.7 ng/mL (26 pM) up to 104-fold higher levels verified assay characteristics required in the search for prostate biomarkers (e.g., kallikrein gene products) at clinically relevant levels.
Journal of Proteome Research | 2004
David Finnskog; Anton Ressine; Thomas Laurell; György Marko-Varga
Electrophoresis | 2006
David Finnskog; Kerstin Järås; Anton Ressine; Johan Malm; György Marko-Varga; Hans Lilja; Thomas Laurell
Nanobiotechnology | 2008
Anton Ressine; David Finnskog; György Marko-Varga; Thomas Laurell
Nanobiotechnology | 2007
Anton Ressine; David Finnskog; György Marko-Varga; Thomas Laurell
Proceedings of the µTAS Conference on Micro Total Analysis Systems 2004; (2004) | 2004
David Finnskog; Anton Ressine; György Marko-Varga; Thomas Laurell
[Publication information missing]; pp 198-200 (2009) | 2009
David Finnskog; Anja Hviid-Simonsen; Ákos Végvári; Thomas Laurell; György Marko-Varga; Simon Ekström
8th International Conference on Miniaturized Systems for Chemistry and Life Sciences | 2005
David Finnskog; Anton Ressine; Thomas Laurell; György Marko-Varga
Swedish Proteomics Society Symposium; (2004) | 2004
Anton Ressine; David Finnskog; György Marko-Varga; Thomas Laurell
Swedish Proteomics Society Symposium; (2003) | 2003
Anton Ressine; David Finnskog; György Marko-Varga; Thomas Laurell