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@ARTICLE{Ishak:461989,
author = {Ishak, Mohd I. and Jenkins, Joshua and Kulkarni,
Satishkumar and Keller, Thomas F. and Briscoe, Wuge and
Nobbs, Angela H. and Su, Bo},
title = {{I}nsights into complex nanopillar-bacteria interactions:
{R}oles of nanotopography and bacterial surface proteins},
journal = {Journal of colloid and interface science},
volume = {604},
issn = {0021-9797},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {PUBDB-2021-03218},
pages = {91 - 103},
year = {2021},
abstract = {Nanopillared surfaces have emerged as a promising strategy
to combat bacterial infections on medicaldevices. However,
the mechanisms that underpin nanopillar-induced rupture of
the bacterial cell membraneremain speculative. In this
study, we have tested three medically relevant poly(ethylene
terephthalate)(PET) nanopillared-surfaces with well-defined
nanotopographies against both Gram-negative andGram-positive
bacteria. Focused ion beam scanning electron microscopy
(FIB-SEM) and contact mechanicsanalysis were utilised to
understand the nanobiophysical response of the bacterial
cell envelope to asingle nanopillar. Given their importance
to bacterial adhesion, the contribution of bacterial surface
proteinsto nanotopography-mediated cell envelope damage was
also investigated. We found that, whilstcell envelope
deformation was affected by the nanopillar tip diameter, the
nanopillar density affectedbacterial metabolic activities.
Moreover, three different types of bacterial cell envelope
deformation wereobserved upon contact of bacteria with the
nanopillared surfaces. These were attributed to
bacterialresponses to cell wall stresses resulting from the
high intrinsic pressure caused by the engagement
ofnanopillars by bacterial surface proteins. Such influences
of bacterial surface proteins on the antibacterial action of
nanopillars have not been previously reported. Our findings
will be valuable to the improveddesign and fabrication of
effective antibacterial surfaces.},
cin = {FS-PS / FS-NL},
ddc = {540},
cid = {I:(DE-H253)FS-PS-20131107 / I:(DE-H253)FS-NL-20120731},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / $NFFA-Europe_supported$ - Technically
supported by Nanoscience Foundries and Fine Analysis Europe
$(2020_Join2-NFFA-Europe_funded)$},
pid = {G:(DE-HGF)POF4-632 /
$G:(DE-HGF)2020_Join2-NFFA-Europe_funded$},
experiment = {EXP:(DE-H253)Nanolab-01-20150101 /
EXP:(DE-H253)Nanolab-04-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34265695},
UT = {WOS:000703521300004},
doi = {10.1016/j.jcis.2021.06.173},
url = {https://bib-pubdb1.desy.de/record/461989},
}