Materials Science and Engineering C, volume 57, pages 222-231

Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models

Jing Liu 1
Rui Hu 2, 3, 4
Jianwei Liu 1
Butian Zhang 2, 3, 4
Yucheng Wang 2, 3, 4
Xin Liu 5
Wing-Cheung Law 6
Liwei Liu 7
LING YE 1
Ken-Tye Yong 2, 3, 4
2
 
50 Nanyang Avenue Singapore 639798 Singapore
4
 
School of Electrical and Electronic Engineering
6
 
Department of Industrial and System Engineering, The Hang Kong Polytechnic University, Hung Hom, Hong Kong.
7
 
School of Science, Changchun University of Science and Technology,Changchun 130022,PR China
Publication typeJournal Article
Publication date2015-12-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor7.9
ISSN09284931, 18730191
Bioengineering
Biomaterials
Mechanics of Materials
Abstract
The toxicity of quantum dots (QDs) has been extensively studied over the past decade. Some common factors that originate the QD toxicity include releasing of heavy metal ions from degraded QDs and the generation of reactive oxygen species on the QD surface. In addition to these factors, we should also carefully examine other potential QD toxicity causes that will play crucial roles in impacting the overall biological system. In this contribution, we have performed cytotoxicity assessment of four types of QD formulations in two different human cancer cell models. The four types of QD formulations, namely, mercaptopropionic acid modified CdSe/CdS/ZnS QDs (CdSe-MPA), PEGylated phospholipid encapsulated CdSe/CdS/ZnS QDs (CdSe-Phos), PEGylated phospholipid encapsulated InP/ZnS QDs (InP-Phos) and Pluronic F127 encapsulated CdTe/ZnS QDs (CdTe-F127), are representatives for the commonly used QD formulations in biomedical applications. Both the core materials and the surface modifications have been taken into consideration as the key factors for the cytotoxicity assessment. Through side-by-side comparison and careful evaluations, we have found that the toxicity of QDs does not solely depend on a single factor in initiating the toxicity in biological system but rather it depends on a combination of elements from the particle formulations. More importantly, our toxicity assessment shows different cytotoxicity trend for all the prepared formulations tested on gastric adenocarcinoma (BGC-823) and neuroblastoma (SH-SY5Y) cell lines. We have further proposed that the cellular uptake of these nanocrystals plays an important role in determining the final faith of the toxicity impact of the formulation. The result here suggests that the toxicity of QDs is rather complex and it cannot be generalized under a few assumptions reported previously. We suggest that one have to evaluate the QD toxicity on a case to case basis and this indicates that standard procedures and comprehensive protocols are urgently needed to be developed and employed for fully assessing and understanding the origins of the toxicity arising from different QD formulations.

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GOST Copy
Liu J. et al. Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models // Materials Science and Engineering C. 2015. Vol. 57. pp. 222-231.
GOST all authors (up to 50) Copy
Liu J., Hu R., Liu J., Zhang B., Wang Y., Liu X., Law W., Liu L., YE L., Yong K. Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models // Materials Science and Engineering C. 2015. Vol. 57. pp. 222-231.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.msec.2015.07.044
UR - https://doi.org/10.1016/j.msec.2015.07.044
TI - Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models
T2 - Materials Science and Engineering C
AU - Liu, Jing
AU - Hu, Rui
AU - Liu, Jianwei
AU - Zhang, Butian
AU - Wang, Yucheng
AU - Liu, Xin
AU - Law, Wing-Cheung
AU - Liu, Liwei
AU - YE, LING
AU - Yong, Ken-Tye
PY - 2015
DA - 2015/12/01 00:00:00
PB - Elsevier
SP - 222-231
VL - 57
SN - 0928-4931
SN - 1873-0191
ER -
BibTex
Cite this
BibTex Copy
@article{2015_Liu,
author = {Jing Liu and Rui Hu and Jianwei Liu and Butian Zhang and Yucheng Wang and Xin Liu and Wing-Cheung Law and Liwei Liu and LING YE and Ken-Tye Yong},
title = {Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models},
journal = {Materials Science and Engineering C},
year = {2015},
volume = {57},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016/j.msec.2015.07.044},
pages = {222--231},
doi = {10.1016/j.msec.2015.07.044}
}
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