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Towards novel applications for biomolecular interactions at surfaces
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för kemi och biomedicin (KOB).
2013 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

The focus of this thesis has been to examine two new concepts involving the interaction of biological agents with synthetic material surfaces.

The feasibility of deploying phage display techniques for the screening of materials in non-biological media was examined in two studies. Firstly, the utility of a phage library based on the M13 phage was used to identify peptides with affinity for α-chymotrypsin in media containing significant amounts of an organic solvent, acetonitrile. The selected peptides were demonstrated to inhibit enzyme autolysis. The influence of immobilization to the substrate used in the screening studies, Eupergit®, on the function of this enzyme in organic solvents was examined; enhanced enzyme resilience to organic solvents was demonstrated. Secondly, phage display screening for cyclic heptapeptide motifs selective for adenine was undertaken using an adenine derivatized glass surfaces as a target. A peptide with affinity for adenine was identified and quartz crystal microbalance studies demonstrated selectivity for the adeninyl moiety.

Finally, the influence of oseltamivir molecularly imprinted polymer particles on the capacity of avian influenza A virus H1N1 to replicate in Madin-Darby Canine Kidney cells was investigated. The polymer matrix was shown to demonstrate a general though small suppression of virus replication.

Ort, förlag, år, upplaga, sidor
Växjö: Linnaeus University Press, 2013.
Serie
Linnaeus University Dissertations ; 149/2013
Nyckelord [en]
molecular recognition, interactions, phage display, biomolecular interactions, phage, adenine, influenza virus replication, oseltamivir, imprinted polymers.
Nationell ämneskategori
Biomaterialvetenskap
Identifikatorer
URN: urn:nbn:se:lnu:diva-29505ISBN: 978-91-87427-53-4 (tryckt)OAI: oai:DiVA.org:lnu-29505DiVA, id: diva2:654612
Disputation
2013-10-25, N2007, Västergård, Smålandsgatan 26E, Kalmar, 09:30 (Engelska)
Opponent
Tillgänglig från: 2013-10-08 Skapad: 2013-10-08 Senast uppdaterad: 2016-11-24Bibliografiskt granskad
Delarbeten
1. Influence of water miscible organic solvents on alpha-chymotrypsin in solution and immobilized on Eupergit CM
Öppna denna publikation i ny flik eller fönster >>Influence of water miscible organic solvents on alpha-chymotrypsin in solution and immobilized on Eupergit CM
2006 (Engelska)Ingår i: Biotechnology letters, Vol. 28, nr 12, s. 929-935Artikel i tidskrift (Refereegranskat) Published
Nationell ämneskategori
Naturvetenskap
Forskningsämne
Naturvetenskap, Organisk kemi
Identifikatorer
urn:nbn:se:lnu:diva-739 (URN)
Tillgänglig från: 2010-04-01 Skapad: 2010-04-01 Senast uppdaterad: 2015-04-16Bibliografiskt granskad
2. Phage display screening in low dielectric media
Öppna denna publikation i ny flik eller fönster >>Phage display screening in low dielectric media
2008 (Engelska)Ingår i: Journal of Molecular Recognition, ISSN 0952-3499, E-ISSN 1099-1352, Vol. 21, nr 5, s. 330-337Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Here we report the first application of phage display screening in low dielectric media. Two series of phage clones with affinity for α-chymotrypsin (CT) were selected from a Ph.D.TM-C7C library, using either a buffer or acetonitrile in buffer (50%, v/v). The affinity of lysates, individual clones or selected cyclic peptides for the enzyme was studied by examining their influence on CT activity. Peptides displayed on phage selected in buffer provided significant protection from enzyme autolysis resulting in marked increase in CT activity (>100%). Phage selected in ACN provided some, albeit weak, protection from the detrimental influence on CT from ACN. In conclusion, the results demonstrate the potential for the application of phage display screening protocols to targets in media of low dielectricity.

Nationell ämneskategori
Organisk kemi
Forskningsämne
Naturvetenskap, Organisk kemi; Naturvetenskap, Bioteknik
Identifikatorer
urn:nbn:se:lnu:diva-1808 (URN)10.1002/jmr.904 (DOI)
Tillgänglig från: 2010-04-06 Skapad: 2010-04-06 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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Söderberg, Pernilla

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