Iron Complex Facilitated Copper Redox Cycling for Nitric Oxide Generation as Nontoxic Nitrifying Biofilm Inhibitor.
Identifieur interne : 003D38 ( Ncbi/Checkpoint ); précédent : 003D37; suivant : 003D39Iron Complex Facilitated Copper Redox Cycling for Nitric Oxide Generation as Nontoxic Nitrifying Biofilm Inhibitor.
Auteurs : Vita Wonoputri [Australie] ; Cindy Gunawan [Australie] ; Sanly Liu [Australie] ; Nicolas Barraud [France] ; Lachlan H. Yee [Australie] ; May Lim [Australie] ; Rose Amal [Australie]Source :
- ACS applied materials & interfaces [ 1944-8252 ] ; 2016.
Abstract
In this study, we developed poly(vinyl chloride) (PVC)-solvent casted mixed metal copper and iron complexes capable of catalytic generation of the antibiofilm nitric oxide (NO) from endogenous nitrite. In the absence of additional reducing agent, we demonstrated that the presence of iron complex facilitates a redox cycling, converting the copper(II) complex to active copper(I) species, which catalyzes the generation of NO from nitrite. Assessed by protein assay and surface coverage analyses, the presence of the mixed metal complexes in systems containing water industry-relevant nitrite-producing nitrifying biofilms was shown to result in a "nontoxic mode" of biofilm suppression, while confining the bacterial growth to the free-floating planktonic phase. Addition of an NO scavenger into the mixed metal system eliminated the antibiofilm effects, therefore validating first, the capability of the mixed metal complexes to catalytically generate NO from the endogenously produced nitrite and second, the antibiofilm effects of the generated NO. The work highlights the development of self-sustained antibiofilm materials that features potential for industrial applications. The novel NO-generating antibiofilm technology diverts from the unfavorable requirement of adding a reducing agent and importantly, the less tendency for development of bacterial resistance.
DOI: 10.1021/acsami.6b10357
PubMed: 27759365
Affiliations:
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South Wales 2052</wicri:noRegion></affiliation></author><author><name sortKey="Liu, Sanly" sort="Liu, Sanly" uniqKey="Liu S" first="Sanly" last="Liu">Sanly Liu</name><affiliation wicri:level="1"><nlm:affiliation>Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales , Sydney, New South Wales 2052, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales , Sydney, New South Wales 2052</wicri:regionArea><wicri:noRegion>New South Wales 2052</wicri:noRegion></affiliation></author><author><name sortKey="Barraud, Nicolas" sort="Barraud, Nicolas" uniqKey="Barraud N" first="Nicolas" last="Barraud">Nicolas Barraud</name><affiliation wicri:level="1"><nlm:affiliation>Genetics of Biofilms Unit, Department of Microbiology, Institut Pasteur , 75015 Paris, France.</nlm:affiliation><country 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In the absence of additional reducing agent, we demonstrated that the presence of iron complex facilitates a redox cycling, converting the copper(II) complex to active copper(I) species, which catalyzes the generation of NO from nitrite. Assessed by protein assay and surface coverage analyses, the presence of the mixed metal complexes in systems containing water industry-relevant nitrite-producing nitrifying biofilms was shown to result in a "nontoxic mode" of biofilm suppression, while confining the bacterial growth to the free-floating planktonic phase. Addition of an NO scavenger into the mixed metal system eliminated the antibiofilm effects, therefore validating first, the capability of the mixed metal complexes to catalytically generate NO from the endogenously produced nitrite and second, the antibiofilm effects of the generated NO. The work highlights the development of self-sustained antibiofilm materials that features potential for industrial applications. The novel NO-generating antibiofilm technology diverts from the unfavorable requirement of adding a reducing agent and importantly, the less tendency for development of bacterial resistance.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Wonoputri, Vita" sort="Wonoputri, Vita" uniqKey="Wonoputri V" first="Vita" last="Wonoputri">Vita Wonoputri</name></noRegion><name sortKey="Amal, Rose" sort="Amal, Rose" uniqKey="Amal R" first="Rose" last="Amal">Rose Amal</name><name sortKey="Gunawan, Cindy" sort="Gunawan, Cindy" uniqKey="Gunawan C" first="Cindy" last="Gunawan">Cindy Gunawan</name><name sortKey="Lim, May" sort="Lim, May" uniqKey="Lim M" first="May" last="Lim">May Lim</name><name sortKey="Liu, Sanly" sort="Liu, Sanly" uniqKey="Liu S" first="Sanly" last="Liu">Sanly Liu</name><name sortKey="Yee, Lachlan H" sort="Yee, Lachlan H" uniqKey="Yee L" first="Lachlan H" last="Yee">Lachlan H. Yee</name></country><country name="France"><region name="Île-de-France"><name sortKey="Barraud, Nicolas" sort="Barraud, Nicolas" uniqKey="Barraud N" first="Nicolas" last="Barraud">Nicolas Barraud</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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