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Lab-on-foil based portable microPCR for point-of-care nucleic acid testing of HIV-1
KTH, School of Biotechnology (BIO), Proteomics and Nanobiotechnology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
KTH, School of Biotechnology (BIO), Proteomics and Nanobiotechnology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
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(English)Manuscript (preprint) (Other academic)
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:kth:diva-205728OAI: oai:DiVA.org:kth-205728DiVA, id: diva2:1090252
Funder
Science for Life Laboratory - a national resource center for high-throughput molecular bioscience
Note

QC 20170427

Available from: 2017-04-24 Created: 2017-04-24 Last updated: 2017-05-29Bibliographically approved
In thesis
1. Foil-based Lab-on-Chip technologies for advanced Point-of-Care molecular diagnostics
Open this publication in new window or tab >>Foil-based Lab-on-Chip technologies for advanced Point-of-Care molecular diagnostics
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Infectious diseases pose a serious threat to global health. Molecular diagnostics provide solutions for effective control and prevention of infections, however suffers from expensive laboratory equipment, and infrastructure to be fully implemented at point of care (POC), especially at low-resource settings. Lab-on-a-chip that aims to integrate complex biochemical analyses into automated systems is promising for POC analysis. A major challenge is the integration of a complete molecular diagnostic assay, generally translating into complex microfluidics, with the requirement of low fabrication cost. This thesis explores the use of flexible electronics, plastic foils and roll-to-roll manufacturing to enable low-cost microfluidic systems, for molecular diagnostic assays especially targeted towards infectious diseases. Many biochemical assays rely on heat; hence a first aspect in this thesis is the integration of a microheater into microfluidics. In a first project a system for SNP-genotyping is presented using solid phase melting curve analysis to discriminate mutations at a single base resolution. Starting with a glass based concept (paper I) which is further developed to a foil based system (paper II), detection of the polymorphism in the neuropeptide Y associated with increased risk of type II diabetes is demonstrated as a proof of principle. Further development and optimization of the microheater concept has enabled roll-to-roll manufacturing compatibility and multiplexing of targets (paper III). A bacterial sub-typing and multiresistance detection in clinical Staphylococcus Aureus samples is demonstrated for applications in infectious diseases diagnostics. Finally, the microheater concept is further developed to enable μPCR (paper IV). Detection of genomic HIV-1 is demonstrated and a portable detection setup based on an LED light source and low cost CMOS camera for detection was developed. A second aspect of this thesis is integration of light sources and optical detection (paper V-VI). A multilayer system integrating an electroluminescent light source, reactive sensor dyes and organic semiconductor transistor for detection is demonstrated. The system could be used for amine detection in gases (paper V). System was made further roll-to-roll compatible. The system uses an external LED light source and a photodetector processed in only one screen printing- and one dispensing step (paper VI). As a proof of principle, absorbance based DNA hybridization was detected. Collectively, roll-to-roll manufacturing compatible “lab on foil” systems have the potential to improve our ability to diagnose at POC especially at resource-limited settings.

Place, publisher, year, edition, pages
KTH: KTH Royal Institute of Technology, 2017. p. 83
Series
TRITA-BIO-Report, ISSN 1654-2312 ; 2017:12
National Category
Medical Engineering Medical Laboratory and Measurements Technologies
Research subject
Biotechnology; Medical Technology; Materials Science and Engineering
Identifiers
urn:nbn:se:kth:diva-205933 (URN)978-91-7729-372-9 (ISBN)
Public defence
2017-05-19, Air and Fire, Scilife lab, Tomtebodav.23A, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20170426

Available from: 2017-04-26 Created: 2017-04-25 Last updated: 2017-04-28Bibliographically approved

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Ohlander, AnnaZelenin, SergeyRussom, Aman

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