PMID- 33684694 OWN - NLM STAT- MEDLINE DCOM- 20210722 LR - 20210722 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 138 DP - 2021 Jun TI - Augmentation of anti-proliferative, pro-apoptotic and oxidant profiles induced by piceatannol in human breast carcinoma MCF-7 cells using zein nanostructures. PG - 111409 LID - S0753-3322(21)00194-3 [pii] LID - 10.1016/j.biopha.2021.111409 [doi] AB - Piceatannol (PCT), a natural polyphenolic stilbene, has pleiotropic pharmacological potentials. It possesses cytotoxic activities toward variant cancerous cells. Zein nanospheres (ZN NSs) have been introduced as ideal nanostructures due to their natural origin, safety, histocompatibility. and convenient method of formulation. The purpose of this study was to explore the impact of PCT-ZN NSs formula on pharmacotherapy potential of PCT against human breast cancer MCF-7 cells. PCT-ZN NSs were formulated and characterized selectively to particle size, zeta potential, encapsulation efficiency and diffusion of PCT. The selected formula has a particle size of 84.4 +/- 2.3 nm, zeta potential value of 33.8 +/- 1.2 mV and encapsulation efficiency of 89.5 +/- 4.1%. PCT-ZN NSs displayed significantly lower IC(50) against MCF-7 cells by about 24 folds. Further, PCT-ZN NSs formula showed higher cellular uptake as compared to free PCT. Examination of cell cycle phases displayed cells accumulation in G2-M phase and increased percentage cells in pre-G1 phase indicating an apoptosis-enhancing activity. Annexin V staining indicated augmented early and late apoptosis. PCT-ZN NSs pro-apoptotic activity was confirmed by the observed significant increased mRNA expression of CASP3, p53, and Bax as well as decreased expression of Bcl2. In addition, PCT-ZN NSs induced oxidative stress as evidenced by depletion of glutathione reductase (GR) activity, increased generation of reactive oxygen species (ROS) and accumulation of lipid peroxidation products. Conclusively, ZN nanostructures of PCT revealed superior cell death-inducing activities against MCF-7 cells in comparison with free PCT. This is mediated, at least partly, by enhanced cellular uptake, pro-apoptotic activity, and oxidative stress potential. CI - Copyright (c) 2021 The Authors. Published by Elsevier Masson SAS.. All rights reserved. FAU - Algandaby, Mardi M AU - Algandaby MM AD - Faculty of Science, Department of Biological Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Medicinal Plants Research Group, Deanship of Scientific Research, King Abdulaziz University, Jeddah, Saudi Arabia. FAU - Al-Sawahli, Majid M AU - Al-Sawahli MM AD - Department of Pharmaceutical Technology, Faculty of Pharmacy, Kafr Elsheikh University, Kafr Elsheikh 33516, Egypt. Electronic address: majid.alsawahli@pharm.kfs.edu.eg. LA - eng PT - Journal Article DEP - 20210305 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (Antioxidants) RN - 0 (Stilbenes) RN - 6KS3LS0D4F (3,3',4,5'-tetrahydroxystilbene) RN - 9010-66-6 (Zein) SB - IM MH - Antioxidants/*administration & dosage/therapeutic use MH - Apoptosis/drug effects/physiology MH - *Breast Neoplasms/drug therapy/metabolism MH - Cell Proliferation/drug effects/physiology MH - Female MH - Humans MH - MCF-7 Cells MH - Nanostructures/*administration & dosage/therapeutic use MH - Oxidative Stress/*drug effects/physiology MH - Stilbenes/*administration & dosage/therapeutic use MH - Zein/*administration & dosage/therapeutic use OTO - NOTNLM OT - Apoptosis OT - Breast cancer OT - Cell cycle OT - Cytotoxicity OT - Diffusion OT - MCF-7 OT - Nanospheres OT - Piceatannol OT - Zein EDAT- 2021/03/09 06:00 MHDA- 2021/07/23 06:00 CRDT- 2021/03/08 20:13 PHST- 2020/11/01 00:00 [received] PHST- 2021/02/06 00:00 [revised] PHST- 2021/02/16 00:00 [accepted] PHST- 2021/03/09 06:00 [pubmed] PHST- 2021/07/23 06:00 [medline] PHST- 2021/03/08 20:13 [entrez] AID - S0753-3322(21)00194-3 [pii] AID - 10.1016/j.biopha.2021.111409 [doi] PST - ppublish SO - Biomed Pharmacother. 2021 Jun;138:111409. doi: 10.1016/j.biopha.2021.111409. Epub 2021 Mar 5.