Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line

Polygonum minus (Polygonaceae) is a medicinal herb distributed throughout eastern Asia. The present study investigated antiproliferative effect of P. minus and its possible mechanisms. Four extracts (petroleum ether, methanol, ethyl acetate, and water) were prepared by cold maceration. Extracts were...

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Published in:BioMed Research International
Main Author: Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2014
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901756283&doi=10.1155%2f2014%2f539607&partnerID=40&md5=6aec5eb29b0207bfa31c4ba60ff4c887
id 2-s2.0-84901756283
spelling 2-s2.0-84901756283
Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
2014
BioMed Research International
2014

10.1155/2014/539607
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901756283&doi=10.1155%2f2014%2f539607&partnerID=40&md5=6aec5eb29b0207bfa31c4ba60ff4c887
Polygonum minus (Polygonaceae) is a medicinal herb distributed throughout eastern Asia. The present study investigated antiproliferative effect of P. minus and its possible mechanisms. Four extracts (petroleum ether, methanol, ethyl acetate, and water) were prepared by cold maceration. Extracts were subjected to phytochemical screening, antioxidant, and antiproliferative assays; the most bioactive was fractionated using vacuum liquid chromatography into seven fractions (F1-F7). Antioxidant activity was measured via total phenolic content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP) assays. Antiproliferative activity was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Most active fraction was tested for apoptosis induction and cell cycle arrest in HepG2 cells using flow cytometry and confocal microscopy. Apoptotic-related gene expression was studied by RT-PCR. Ethyl acetate extract was bioactive in initial assays. Its fraction, F7, exhibited highest antioxidant capacity (TPC; 113.16 ± 6.2 mg GAE/g extract, DPPH; EC 50: 30.5 ± 3.2 g/mL, FRAP; 1169 ± 20.3 mol Fe (II)/mg extract) and selective antiproliferative effect (IC 50: 25.75 ± 1.5 g/mL). F7 induced apoptosis in concentration- and time-dependent manner and caused cell cycle arrest at S-phase. Upregulation of proapoptotic genes (Bax, p53, and caspase-3) and downregulation of antiapoptotic gene, Bcl-2, were observed. In conclusion, F7 was antiproliferative to HepG2 cells by inducing apoptosis, cell cycle arrest, and via antioxidative effects. © 2014 Mohd Alfazari Mohd Ghazali et al.
Hindawi Publishing Corporation
23146133
English
Article
All Open Access; Gold Open Access
author Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
spellingShingle Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
author_facet Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
author_sort Mohd Ghazali M.A.; Al-Naqeb G.; Krishnan Selvarajan K.; Hazizul Hasan M.; Adam A.
title Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
title_short Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
title_full Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
title_fullStr Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
title_full_unstemmed Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
title_sort Apoptosis induction by polygonum minus is related to antioxidant capacity, alterations in expression of apoptotic-related genes, and S-phase cell cycle arrest in HepG2 cell line
publishDate 2014
container_title BioMed Research International
container_volume 2014
container_issue
doi_str_mv 10.1155/2014/539607
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901756283&doi=10.1155%2f2014%2f539607&partnerID=40&md5=6aec5eb29b0207bfa31c4ba60ff4c887
description Polygonum minus (Polygonaceae) is a medicinal herb distributed throughout eastern Asia. The present study investigated antiproliferative effect of P. minus and its possible mechanisms. Four extracts (petroleum ether, methanol, ethyl acetate, and water) were prepared by cold maceration. Extracts were subjected to phytochemical screening, antioxidant, and antiproliferative assays; the most bioactive was fractionated using vacuum liquid chromatography into seven fractions (F1-F7). Antioxidant activity was measured via total phenolic content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP) assays. Antiproliferative activity was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Most active fraction was tested for apoptosis induction and cell cycle arrest in HepG2 cells using flow cytometry and confocal microscopy. Apoptotic-related gene expression was studied by RT-PCR. Ethyl acetate extract was bioactive in initial assays. Its fraction, F7, exhibited highest antioxidant capacity (TPC; 113.16 ± 6.2 mg GAE/g extract, DPPH; EC 50: 30.5 ± 3.2 g/mL, FRAP; 1169 ± 20.3 mol Fe (II)/mg extract) and selective antiproliferative effect (IC 50: 25.75 ± 1.5 g/mL). F7 induced apoptosis in concentration- and time-dependent manner and caused cell cycle arrest at S-phase. Upregulation of proapoptotic genes (Bax, p53, and caspase-3) and downregulation of antiapoptotic gene, Bcl-2, were observed. In conclusion, F7 was antiproliferative to HepG2 cells by inducing apoptosis, cell cycle arrest, and via antioxidative effects. © 2014 Mohd Alfazari Mohd Ghazali et al.
publisher Hindawi Publishing Corporation
issn 23146133
language English
format Article
accesstype All Open Access; Gold Open Access
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