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Toxicity and serum metabolomics investigation of Mn-doped ZnS quantum dots in mice

Authors Yang Y, Lv S, Wang F, An Y, Fang N, Zhang W, Zhao W, Guo X, Ji S

Received 15 April 2019

Accepted for publication 6 July 2019

Published 6 August 2019 Volume 2019:14 Pages 6297—6311


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Alexander Kharlamov

Peer reviewer comments 2

Editor who approved publication: Dr Linlin Sun

Yanjie Yang,1 Shuangyu Lv,1 Fengling Wang,1 Yang An,1 Na Fang,1 Weijuan Zhang,1 Wei Zhao,1 Xiangqian Guo,1 Shaoping Ji1,2

1School of Basic Medical Sciences, Henan University, Kaifeng 475004, People’s Republic of China; 2Henan Provincial Engineering Centre of Tumor Molecular Diagnosis and Therapy & Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan University, Kaifeng 475004, People’s Republic of China

Purpose: Mn-doped ZnS quantum dots (QDs) with special luminescent properties have been widely researched and applied in various fields. Thus, their release toxicity and security cannot be ignored.
Methods: In the present study, the toxicity and non-targeted metabolomics of Mn-doped ZnS QDs were investigated after single intravenous injection. Serum metabolites were evaluated based on gas chromatography–mass spectrometry together with multivariate statistical analyses [principal component analysis, partial least squares discriminant analysis, and orthogonal PLS-DA].
Results: The modified metabolites (variable importance in the projection (VIP) >1 and p<0.05) revealed that Mn-doped ZnS QDs exposure disturbed glycolysis, tricarboxylic acid cycle, ketoplasia, glutaminolysis, and amino acid and lipid metabolism. The behavior, coefficients of organs, and histological changes were the same as in the control group, and the disturbance of hematology and serum biochemistry was not dose- or time-dependent.
Conclusion: Our study provides a general observation regarding the toxicity and potential metabolic responses of mice exposed to Mn-doped ZnS QDs.

Keywords: Mn-doped ZnS QDs, toxicity, metabolomics, GC-MS, mice

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