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Use of real-time, label-free analysis in revealing low-affinity binding to blood group antigens by Helicobacter pylori
Helicure AB, Umeå Biotech Incubator, Umeå.
Helicure AB, Umeå Biotech Incubator, Umeå.
Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk kemi och biofysik.
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2011 (engelsk)Inngår i: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 83, nr 16, s. 6336-6341Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Infectious diseases are often initiated by microbial adherence that is mediated by the binding of attachment molecules, termed adhesins, to cell surface receptors on host cells. We present an experimental system, oblique-incidence reflectivity difference (OI-RD) microscopy, which allows the detection of novel, low-affinity microbial attachment mechanisms that may be essential for infectious processes. OI-RD microscopy was used to analyze direct binding of the oncopathogen, Helicobacter pylori ( H. pylori ) to immobilized glycoconjugates in real time with no need for labeling tags. The results suggest the presence of additional Lewis b blood group antigen (Le(b)) binding adhesins that have not been detected previously. OI-RD microscopy also confirmed the high-affinity binding of H. pylori outer-membrane protein BabA to Le(b). The OI-RD microscopy method is broadly applicable to real-time characterization of intact microbial binding to host receptors and offers new strategies to elucidate the molecular interactions of infectious agents with human host cells.

sted, utgiver, år, opplag, sider
American Chemical Society (ACS), 2011. Vol. 83, nr 16, s. 6336-6341
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-82538DOI: 10.1021/ac201260cISI: 000293758800032PubMedID: 21721569OAI: oai:DiVA.org:umu-82538DiVA, id: diva2:661810
Forskningsfinansiär
Swedish Research Council, 11218Swedish Cancer SocietyNIH (National Institute of Health), R01 AI070803, R01 AI081037, R01 HG003827-04, R01 GM076360-04S1Tilgjengelig fra: 2013-11-05 Laget: 2013-11-05 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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Schmidt, AlexejBylund, GöranHenriksson, SaraBorén, Thomas

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