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Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1

Chiral gold nanoclusters (Au NCs) exhibit attracting properties owing to their unique physical and chemical properties. Herein we report for the first time chiral gold nanoclusters' cytotoxicity and potential molecular mechanism. The L-glutathione (i.e. L-GSH) and D-glutathione (i.e. D-GSH)-cap...

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Autores principales: Zhang, Chunlei, Zhou, Zhijun, Zhi, Xiao, Ma, Yue, Wang, Kan, Wang, Yuxia, Zhang, Yingge, Fu, Hualin, Jin, Weilin, Pan, Fei, Cui, Daxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Ivyspring International Publisher 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4279000/
https://www.ncbi.nlm.nih.gov/pubmed/25553104
http://dx.doi.org/10.7150/thno.10363
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author Zhang, Chunlei
Zhou, Zhijun
Zhi, Xiao
Ma, Yue
Wang, Kan
Wang, Yuxia
Zhang, Yingge
Fu, Hualin
Jin, Weilin
Pan, Fei
Cui, Daxiang
author_facet Zhang, Chunlei
Zhou, Zhijun
Zhi, Xiao
Ma, Yue
Wang, Kan
Wang, Yuxia
Zhang, Yingge
Fu, Hualin
Jin, Weilin
Pan, Fei
Cui, Daxiang
author_sort Zhang, Chunlei
collection PubMed
description Chiral gold nanoclusters (Au NCs) exhibit attracting properties owing to their unique physical and chemical properties. Herein we report for the first time chiral gold nanoclusters' cytotoxicity and potential molecular mechanism. The L-glutathione (i.e. L-GSH) and D-glutathione (i.e. D-GSH)-capped Au NCs were prepared and characterized by HRTEM, UV-vis, photoluminescence and circular dichroism (CD) spectroscopy. Results showed that the CD spectra of L-glutathione (i.e. L-GSH) and D-glutathione (i.e. D-GSH)-capped Au NCs exhibited multiple bands which were identically mirror-imaged, demonstrating that the chirality of GSH-capped NCs had contributions from both the metal core and the ligand. The effects of AuNCs@L-GSH and AuNCs@D-GSH on cells were similar based on the cell physiology related cytotoxicity, although the effects became more prominent in AuNCs@D-GSH treated cells, including ROS generation, mitochondrial membrane depolarization, cell cycle arrest and apoptosis. Global gene expression and pathway analysis displayed that both AuNCs@L-GSH and AuNCs@D-GSH caused the up-regulation of genes involved in cellular rescue and stress response, while AuNCs@D-GSH individually induced up-regulation of transcripts involved in some metabolic- and biosynthetic-related response. MGC-803 cells were more sensitive to the oxidative stress damage induced by chiral Au NCs than GES-1 cells, which was associated with GSTP1 hypermethylation. In conclusion, chiral gold nanoclusters exhibit this chirality-associated regulation of cytotoxicity, different gene expression profiling and epigenetic changes should be responsible for observed phenomena. Our study highlights the importance of the interplays between chiral materials and biological system at sub-nano level.
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spelling pubmed-42790002015-01-01 Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1 Zhang, Chunlei Zhou, Zhijun Zhi, Xiao Ma, Yue Wang, Kan Wang, Yuxia Zhang, Yingge Fu, Hualin Jin, Weilin Pan, Fei Cui, Daxiang Theranostics Research Paper Chiral gold nanoclusters (Au NCs) exhibit attracting properties owing to their unique physical and chemical properties. Herein we report for the first time chiral gold nanoclusters' cytotoxicity and potential molecular mechanism. The L-glutathione (i.e. L-GSH) and D-glutathione (i.e. D-GSH)-capped Au NCs were prepared and characterized by HRTEM, UV-vis, photoluminescence and circular dichroism (CD) spectroscopy. Results showed that the CD spectra of L-glutathione (i.e. L-GSH) and D-glutathione (i.e. D-GSH)-capped Au NCs exhibited multiple bands which were identically mirror-imaged, demonstrating that the chirality of GSH-capped NCs had contributions from both the metal core and the ligand. The effects of AuNCs@L-GSH and AuNCs@D-GSH on cells were similar based on the cell physiology related cytotoxicity, although the effects became more prominent in AuNCs@D-GSH treated cells, including ROS generation, mitochondrial membrane depolarization, cell cycle arrest and apoptosis. Global gene expression and pathway analysis displayed that both AuNCs@L-GSH and AuNCs@D-GSH caused the up-regulation of genes involved in cellular rescue and stress response, while AuNCs@D-GSH individually induced up-regulation of transcripts involved in some metabolic- and biosynthetic-related response. MGC-803 cells were more sensitive to the oxidative stress damage induced by chiral Au NCs than GES-1 cells, which was associated with GSTP1 hypermethylation. In conclusion, chiral gold nanoclusters exhibit this chirality-associated regulation of cytotoxicity, different gene expression profiling and epigenetic changes should be responsible for observed phenomena. Our study highlights the importance of the interplays between chiral materials and biological system at sub-nano level. Ivyspring International Publisher 2015-01-01 /pmc/articles/PMC4279000/ /pubmed/25553104 http://dx.doi.org/10.7150/thno.10363 Text en © Ivyspring International Publisher. This is an open-access article distributed under the terms of the Creative Commons License (http://creativecommons.org/licenses/by-nc-nd/3.0/). Reproduction is permitted for personal, noncommercial use, provided that the article is in whole, unmodified, and properly cited.
spellingShingle Research Paper
Zhang, Chunlei
Zhou, Zhijun
Zhi, Xiao
Ma, Yue
Wang, Kan
Wang, Yuxia
Zhang, Yingge
Fu, Hualin
Jin, Weilin
Pan, Fei
Cui, Daxiang
Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title_full Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title_fullStr Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title_full_unstemmed Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title_short Insights into the Distinguishing Stress-induced Cytotoxicity of Chiral Gold Nanoclusters and the Relationship with GSTP1
title_sort insights into the distinguishing stress-induced cytotoxicity of chiral gold nanoclusters and the relationship with gstp1
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4279000/
https://www.ncbi.nlm.nih.gov/pubmed/25553104
http://dx.doi.org/10.7150/thno.10363
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