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3-Hydroxyflavone enhances the toxicity of ZnO nanoparticles in vitro.
J Appl Toxicol. 2018 09; 38(9):1206-1214.JA

Abstract

It is recently shown that flavonoids might reduce the toxicity of nanoparticles (NPs) due to their antioxidative properties. In this study, the influence of 3-hydroxyflavone (H3) on the toxicity of ZnO NPs was investigated. H3 increased hydrodynamic size, polydispersity index and absolute value of the zeta potential of ZnO NPs, which indicated that H3 could influence the colloidal aspects of NPs. Surprisingly, H3 markedly decreased the initial concentration of ZnO NPs required to induce cytotoxicity to Caco-2, HepG2, THP-1 and human umbilical vein endothelial cells, which suggested that H3 could promote the toxicity of ZnO NPs to both cancerous and normal cells. For comparison, 6-hydroxyflavone did not show this effect. H3 remarkably increased cellular Zn elements and intracellular Zn ions in HepG2 cells following ZnO NP exposure, and co-exposure to H3 and NPs induced a relatively higher intracellular reactive oxygen species. Exposure to ZnO NPs at 3 hours induced the expression of endoplasmic reticulum stress markers DDIT3 and XBP-1 s, which was suppressed by H3. The expression of apoptotic genes BAX and CASP3 was significantly induced by ZnO NP exposure after 3 and 5 hours, respectively, and H3 further significantly promoted CASP3 expression at 5 hours. In combination, the results from this study suggested that H3 affected colloidal stability of ZnO NPs, promoted the interactions between NPs and cells, and altered the NP-induced endoplasmic reticulum stress-apoptosis signaling pathway, which finally enhanced the cytotoxicity of ZnO NPs.

Authors+Show Affiliations

Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China.Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.Key Laboratory of Environment-Friendly Chemistry and Applications of Ministry Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China. Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China.

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

29691881

Citation

Luo, Yunfeng, et al. "3-Hydroxyflavone Enhances the Toxicity of ZnO Nanoparticles in Vitro." Journal of Applied Toxicology : JAT, vol. 38, no. 9, 2018, pp. 1206-1214.
Luo Y, Wu C, Liu L, et al. 3-Hydroxyflavone enhances the toxicity of ZnO nanoparticles in vitro. J Appl Toxicol. 2018;38(9):1206-1214.
Luo, Y., Wu, C., Liu, L., Gong, Y., Peng, S., Xie, Y., & Cao, Y. (2018). 3-Hydroxyflavone enhances the toxicity of ZnO nanoparticles in vitro. Journal of Applied Toxicology : JAT, 38(9), 1206-1214. https://doi.org/10.1002/jat.3633
Luo Y, et al. 3-Hydroxyflavone Enhances the Toxicity of ZnO Nanoparticles in Vitro. J Appl Toxicol. 2018;38(9):1206-1214. PubMed PMID: 29691881.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 3-Hydroxyflavone enhances the toxicity of ZnO nanoparticles in vitro. AU - Luo,Yunfeng, AU - Wu,Chaohua, AU - Liu,Liangliang, AU - Gong,Yu, AU - Peng,Shengming, AU - Xie,Yixi, AU - Cao,Yi, Y1 - 2018/04/25/ PY - 2018/01/24/received PY - 2018/03/12/revised PY - 2018/03/22/accepted PY - 2018/4/25/pubmed PY - 2019/10/28/medline PY - 2018/4/26/entrez KW - 3-Hydroxyflavone (H3) KW - Combined effect KW - Cytotoxicity KW - Endoplasmic reticulum (ER) stress KW - ZnO nanoparticles (NPs) SP - 1206 EP - 1214 JF - Journal of applied toxicology : JAT JO - J Appl Toxicol VL - 38 IS - 9 N2 - It is recently shown that flavonoids might reduce the toxicity of nanoparticles (NPs) due to their antioxidative properties. In this study, the influence of 3-hydroxyflavone (H3) on the toxicity of ZnO NPs was investigated. H3 increased hydrodynamic size, polydispersity index and absolute value of the zeta potential of ZnO NPs, which indicated that H3 could influence the colloidal aspects of NPs. Surprisingly, H3 markedly decreased the initial concentration of ZnO NPs required to induce cytotoxicity to Caco-2, HepG2, THP-1 and human umbilical vein endothelial cells, which suggested that H3 could promote the toxicity of ZnO NPs to both cancerous and normal cells. For comparison, 6-hydroxyflavone did not show this effect. H3 remarkably increased cellular Zn elements and intracellular Zn ions in HepG2 cells following ZnO NP exposure, and co-exposure to H3 and NPs induced a relatively higher intracellular reactive oxygen species. Exposure to ZnO NPs at 3 hours induced the expression of endoplasmic reticulum stress markers DDIT3 and XBP-1 s, which was suppressed by H3. The expression of apoptotic genes BAX and CASP3 was significantly induced by ZnO NP exposure after 3 and 5 hours, respectively, and H3 further significantly promoted CASP3 expression at 5 hours. In combination, the results from this study suggested that H3 affected colloidal stability of ZnO NPs, promoted the interactions between NPs and cells, and altered the NP-induced endoplasmic reticulum stress-apoptosis signaling pathway, which finally enhanced the cytotoxicity of ZnO NPs. SN - 1099-1263 UR - https://www.unboundmedicine.com/medline/citation/29691881/3_Hydroxyflavone_enhances_the_toxicity_of_ZnO_nanoparticles_in_vitro_ L2 - https://doi.org/10.1002/jat.3633 DB - PRIME DP - Unbound Medicine ER -