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Suppl. Mater.: 

CLC number: Q25

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2016-01-13

Cited: 5

Clicked: 4798

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Xu-feng Fu

http://orcid.org/0000-0002-4101-1000

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Journal of Zhejiang University SCIENCE B 2016 Vol.17 No.2 P.136-146

http://doi.org/10.1631/jzus.B1500158


PGC-1α regulates the cell cycle through ATP and ROS in CH1 cells


Author(s):  Xu-feng Fu, Kun Yao, Xing Du, Yan Li, Xiu-yu Yang, Min Yu, Mei-zhang Li, Qing-hua Cui

Affiliation(s):  School of Life Sciences, Yunnan University, Kunming 650091, China; more

Corresponding email(s):   cuiqinghua@ynu.edu.cn

Key Words:  Peroxisome proliferator-activated receptor-γ, coactivator 1α, (PGC-1α, ), Mitochondria, Oxidative phosphorylation (OXPHOS), Cell cycle, CyclinD1, CyclinB1


Xu-feng Fu, Kun Yao, Xing Du, Yan Li, Xiu-yu Yang, Min Yu, Mei-zhang Li, Qing-hua Cui. PGC-1α regulates the cell cycle through ATP and ROS in CH1 cells[J]. Journal of Zhejiang University Science B, 2016, 17(2): 136-146.

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author="Xu-feng Fu, Kun Yao, Xing Du, Yan Li, Xiu-yu Yang, Min Yu, Mei-zhang Li, Qing-hua Cui",
journal="Journal of Zhejiang University Science B",
volume="17",
number="2",
pages="136-146",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B1500158"
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%T PGC-1α regulates the cell cycle through ATP and ROS in CH1 cells
%A Xu-feng Fu
%A Kun Yao
%A Xing Du
%A Yan Li
%A Xiu-yu Yang
%A Min Yu
%A Mei-zhang Li
%A Qing-hua Cui
%J Journal of Zhejiang University SCIENCE B
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%P 136-146
%@ 1673-1581
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B1500158

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T1 - PGC-1α regulates the cell cycle through ATP and ROS in CH1 cells
A1 - Xu-feng Fu
A1 - Kun Yao
A1 - Xing Du
A1 - Yan Li
A1 - Xiu-yu Yang
A1 - Min Yu
A1 - Mei-zhang Li
A1 - Qing-hua Cui
J0 - Journal of Zhejiang University Science B
VL - 17
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SP - 136
EP - 146
%@ 1673-1581
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.B1500158


Abstract: 
peroxisome proliferator-activated receptor-γ; coactivator 1α; (PGC-1α;) is a transcriptional co-activator involved in mitochondrial biogenesis, respiratory capacity, and oxidative phosphorylation (OXPHOS). PGC-1α plays an important role in cellular metabolism and is associated with tumorigenesis, suggesting an involvement in cell cycle progression. However, the underlying mechanisms mediating its involvement in these processes remain unclear. To elucidate the signaling pathways involved in PGC-1α function, we established a cell line, CH1 PGC-1α, which stably overexpresses PGC-1α. Using this cell line, we found that over-expression of PGC-1α stimulated extra adenosine triphosphate (ATP) and reduced reactive oxygen species (ROS) production. These effects were accompanied by up-regulation of the cell cycle checkpoint regulators cyclinD1 and cyclinB1. We hypothesized that ATP and ROS function as cellular signals to regulate cyclins and control cell cycle progression. Indeed, we found that reduction of ATP levels down-regulated cyclinD1 but not cyclinB1, whereas elevation of ROS levels down-regulated cyclinB1 but not cyclinD1. Furthermore, both low ATP levels and elevated ROS levels inhibited cell growth, but PGC-1α was maintained at a constant level. Together, these results demonstrate that PGC-1α regulates cell cycle progression through modulation of cyclinD1 and cyclinB1 by ATP and ROS. These findings suggest that PGC-1α potentially coordinates energy metabolism together with the cell cycle.

PGC-1α在CH1细胞中通过ATP和ROS调控细胞周期

目的:探讨在CH1细胞中过氧化物酶体增殖物受体γ共激活因子1α(PGC-1α)调控细胞周期时三磷酸腺苷(ATP)和活性氧(ROS)的作用机制。
创新点:构建了稳定表达PGC-1α的CH1细胞株,并系统地研究了PGC-1α调控细胞周期是通过ATP和ROS调节CyclinD1和CyclinB1的行使功能。
方法:以慢病毒质粒pBABE为载体构建了PGC-1α稳定表达的CH1 PGC-1α细胞株(PGC-1α),同时转染空质粒pBABE作为对照(PB),结合RNA干扰CH1 PGC-1α中PGC-1α的过表达(Si),测定了ATP和ROS水平。用流式细胞术检测了细胞周期和免疫印迹检测了CyclinB1/D1的表达,并进一步分别用寡霉素抑制PGC-1α细胞中的ATP生成,用H2O2处理细胞以增加外源ROS水平。然后检测ATP和ROS改变后,对CyclinB1/D1表达及细胞周期的影响,以明确ATP和ROS是否参与PGC-1α对细胞周期的调控作用。
结论:本实验成功构建了稳定表达PGC-1α的细胞株(图1和图2a),与PB对照和RNA干扰PGC-1α比较,过表达PGC-1α具有升高ATP、降低ROS和促进细胞周期的作用(图3和图4)。进一步用寡霉素抑制ATP合成后发现CyclinD1明显下调(图5),而加入H2O2增加外源ROS后发现CyclinB1显著上调(图6)。通过本实验我们提出PGC-1α调控细胞周期是通过升高ATP水平抑制CyclinD1表达和降低ROS水平促进CyclinB1表达来实现。

关键词:过氧化物酶体增殖物受体γ共激活因子1α(PGC-1α);线粒体;氧化磷酸化;细胞周期;CyclinD1;CyclinB1

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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[36]List of electronic supplementary materials

[37]Fig. S1 Immunofluorescence picture of CyclinD1 and CyclinB1 in PB, PGC-1α, and Si cells

[38]Fig. S2 Mitochondrial content indicated by MitoTracker Green fluorescence (analyzed by flow cytometry)

[39]Fig. S3 Change of CyclinD1/B1 levels in CH1-PGC-1α after 24 h of antimycin A treatment

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