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1.
Water Res. 2018 Feb 1;129:522. doi: 10.1016/j.watres.2017.12.075.

Corrigendum to "Interaction between bacterial cell membranes and nano-TiO2 revealed by two-dimensional FTIR correlation spectroscopy using bacterial ghost as a model cell envelope" [Water Res. 118 (2017) 104-113].

Author information

1
School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT Hong Kong, China.
2
Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
3
Centre for Clean Environment and Energy, Griffith Scholl of Environment, Griffith University, Queensland 4222, Australia; Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031 Anhui, China.
4
School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT Hong Kong, China. Electronic address: pkwong@cuhk.edu.hk.
2.
Water Res. 2017 Jul 1;118:104-113. doi: 10.1016/j.watres.2017.04.023. Epub 2017 Apr 10.

Interaction between bacterial cell membranes and nano-TiO2 revealed by two-dimensional FTIR correlation spectroscopy using bacterial ghost as a model cell envelope.

Author information

1
School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China.
2
Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China. Electronic address: antc99@gdut.edu.cn.
3
Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
4
Centre for Clean Environment and Energy, Griffith Scholl of Environment, Griffith University, Queensland, 4222, Australia; Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, Anhui, China.
5
School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China. Electronic address: pkwong@cuhk.edu.hk.

Abstract

The interaction between microorganisms and nanoparticles is a crucial step towards understanding the subsequent biological effect. In this study, the interaction between TiO2 nanoparticles and bacterial cell membrane was investigated by Two-dimensional Correlation Fourier Transformation Infrared spectroscopy (2D-FTIR-COS) using bacterial ghosts (BGs), which are non-living bacterial cell envelopes devoid of cytoplasm. The synchronous map of 2D-FTIR-COS results indicated that the functionalities in proteins of BGs preferentially interacted with TiO2 nanoparticles; whereas the interaction of TiO2 nanoparticles with characteristic functionality in polysaccharides (COH) and phospholipids (PO) were very weak or insensitive. This conclusion was further corroborated by settling of TiO2 nanoparticles in the presence of pure protein, polysaccharide and phospholipid represented by bovine serum albumin (BSA), alginate and phosphatidylethanolamine (PE). Additionally, the asynchronous map of 2D-FTIR-COS indicated a sequential order of functionalities bonded to TiO2 nanoparticles with the order of: COO- > aromatic CC stretching > NH, amide II > CO, ketone. These findings contribute to deeper understanding of the interaction between TiO2 nanoparticles and bacterial cell membrane in aquatic systems.

KEYWORDS:

Bacterial ghosts; Nanoparticle-cell membrane interaction; Titanium dioxide nanoparticles; Two-dimensional FTIR correlation

PMID:
28414961
DOI:
10.1016/j.watres.2017.04.023
[Indexed for MEDLINE]
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