Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition
<p>Abstract</p> <p>Background</p> <p>Lycorine, a natural alkaloid extracted from <it>Amaryllidaceae</it>, has shown various pharmacological effects. Recent studies have focused on the potential antitumor activity of lycorine. In our previous study, we found...
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doaj-d2c36f650a8c46efb5c5b191caf54e6e2020-11-25T01:58:32ZengBMCCancer Cell International1475-28672012-11-011214910.1186/1475-2867-12-49Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibitionLi LvDai Hong-JuanYe MaoWang Shu-LingXiao Xiao-JuanZheng JieChen Hui-YongLuo Yu-haoLiu Jing<p>Abstract</p> <p>Background</p> <p>Lycorine, a natural alkaloid extracted from <it>Amaryllidaceae</it>, has shown various pharmacological effects. Recent studies have focused on the potential antitumor activity of lycorine. In our previous study, we found that lycorine decrease the cell viability of leukemia HL-60 cells and multiple myeloma KM3 cells and induces cell apoptosis. However, the effect and molecular mechanism of lycorine on human chronic myelocytic leukemia cells has yet to be determined.</p> <p>Methods</p> <p>Human chronic myelocytic leukemia cells K562 were treated with lycorine. Cell viability was monitored using the method of CCK-8. The histone deacetylase (HDAC) enzymatic activity was detected by HDAC colorimetric assay, and the cell cycle was analyzed by flow cytometry. The expression of cell-cycle related proteins were identified using Western blot.</p> <p>Results</p> <p>In the present study, we further revealed that lycorine can inhibit the proliferation of K562 cells. Analysis of HDAC activity showed that lycroine decreases HDAC enzymatic activities in K562 cells in a dose-dependent manner. Inhibition of HDAC activity has been associated with cell-cycle arrest and growth inhibition. We evaluated the cell cycle distribution after lycorine treatment and found that lycorine causes cell-cycle arrest in the G0/G1 phase. To investigate the mechanism behind this cell cycle arrest, G1-related proteins were assayed by Western blot. After lycorine treatment, cyclin D1 and cyclin-dependent kinase 4 expressions were inhibited and retinoblastoma protein phosphorylation was reduced. Lycorine treatment also significantly upregulated the expression of p53 and its target gene product, p21.</p> <p>Conclusions</p> <p>These results suggest that inhibition of HDAC activity is responsible for at least part of the induction of cell-cycle arrest in the G0/G1 phase by lycorine and provide a mechanistic framework for further exploring the use of lycorine as a novel antitumor agent.</p> http://www.cancerci.com/content/12/1/49LycorineK562 cell lineHDAC inhibitionG0/G1 phase arrest |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Li Lv Dai Hong-Juan Ye Mao Wang Shu-Ling Xiao Xiao-Juan Zheng Jie Chen Hui-Yong Luo Yu-hao Liu Jing |
spellingShingle |
Li Lv Dai Hong-Juan Ye Mao Wang Shu-Ling Xiao Xiao-Juan Zheng Jie Chen Hui-Yong Luo Yu-hao Liu Jing Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition Cancer Cell International Lycorine K562 cell line HDAC inhibition G0/G1 phase arrest |
author_facet |
Li Lv Dai Hong-Juan Ye Mao Wang Shu-Ling Xiao Xiao-Juan Zheng Jie Chen Hui-Yong Luo Yu-hao Liu Jing |
author_sort |
Li Lv |
title |
Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition |
title_short |
Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition |
title_full |
Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition |
title_fullStr |
Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition |
title_full_unstemmed |
Lycorine induces cell-cycle arrest in the G0/G1 phase in K562 cells via HDAC inhibition |
title_sort |
lycorine induces cell-cycle arrest in the g0/g1 phase in k562 cells via hdac inhibition |
publisher |
BMC |
series |
Cancer Cell International |
issn |
1475-2867 |
publishDate |
2012-11-01 |
description |
<p>Abstract</p> <p>Background</p> <p>Lycorine, a natural alkaloid extracted from <it>Amaryllidaceae</it>, has shown various pharmacological effects. Recent studies have focused on the potential antitumor activity of lycorine. In our previous study, we found that lycorine decrease the cell viability of leukemia HL-60 cells and multiple myeloma KM3 cells and induces cell apoptosis. However, the effect and molecular mechanism of lycorine on human chronic myelocytic leukemia cells has yet to be determined.</p> <p>Methods</p> <p>Human chronic myelocytic leukemia cells K562 were treated with lycorine. Cell viability was monitored using the method of CCK-8. The histone deacetylase (HDAC) enzymatic activity was detected by HDAC colorimetric assay, and the cell cycle was analyzed by flow cytometry. The expression of cell-cycle related proteins were identified using Western blot.</p> <p>Results</p> <p>In the present study, we further revealed that lycorine can inhibit the proliferation of K562 cells. Analysis of HDAC activity showed that lycroine decreases HDAC enzymatic activities in K562 cells in a dose-dependent manner. Inhibition of HDAC activity has been associated with cell-cycle arrest and growth inhibition. We evaluated the cell cycle distribution after lycorine treatment and found that lycorine causes cell-cycle arrest in the G0/G1 phase. To investigate the mechanism behind this cell cycle arrest, G1-related proteins were assayed by Western blot. After lycorine treatment, cyclin D1 and cyclin-dependent kinase 4 expressions were inhibited and retinoblastoma protein phosphorylation was reduced. Lycorine treatment also significantly upregulated the expression of p53 and its target gene product, p21.</p> <p>Conclusions</p> <p>These results suggest that inhibition of HDAC activity is responsible for at least part of the induction of cell-cycle arrest in the G0/G1 phase by lycorine and provide a mechanistic framework for further exploring the use of lycorine as a novel antitumor agent.</p> |
topic |
Lycorine K562 cell line HDAC inhibition G0/G1 phase arrest |
url |
http://www.cancerci.com/content/12/1/49 |
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