AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression

Shengjie Wu,1,2,* Zuhao Zhang,1,* Dandan Wu,1,3 Hongling Chen,1 Xixi Qian,1 Xuerong Wang,1 Wenbin Huang41Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, People’s Republic of China; 2Department of Pharmacy, Sir Run Run Shaw Hospital, School of Medic...

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Main Authors: Wu S, Zhang Z, Wu D, Chen H, Qian X, Wang X, Huang W
Format: Article
Language:English
Published: Dove Medical Press 2019-07-01
Series:OncoTargets and Therapy
Subjects:
Online Access:https://www.dovepress.com/aeg-1-promotes-the-growth-of-gastric-cancer-through-the-upregulation-o-peer-reviewed-article-OTT
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spelling doaj-4c3b431ea9104ee6a1b225d3575fea5b2020-11-25T00:55:19ZengDove Medical PressOncoTargets and Therapy1178-69302019-07-01Volume 125887589547290AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expressionWu SZhang ZWu DChen HQian XWang XHuang WShengjie Wu,1,2,* Zuhao Zhang,1,* Dandan Wu,1,3 Hongling Chen,1 Xixi Qian,1 Xuerong Wang,1 Wenbin Huang41Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, People’s Republic of China; 2Department of Pharmacy, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310016, People’s Republic of China; 3Department of Basic Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu Province 222000, People’s Republic of China; 4Department of Pathology, Nanjing Medical University Affiliated Nanjing Hospital (Nanjing First Hospital), Nanjing, Jiangsu Province 210006, People’s Republic of China*These authors contributed equally to this workBackground: AEG-1 has been proven to be tumor enhancer in gastric cancer. However, its mechanism has not yet been fully clarified.Methods: Gain-of-function and loss-of-function experiments were conducted to determine the role of eIF4E in AEG-1-induced growth of gastric cancer cells and xenografts of a nude mouse model. Western blot analysis and SRB assay were used to determine the protein expression levels and survival cell numbers.Results: Silencing the expression of AEG-1 inhibited the growth of gastric cancer cells in parallel with a decreased eIF4E and cyclin D1 expression; however, the overexpression of AEG-1 promoted cell growth and increased eIF4E and cyclin D1 expression. Moreover, the overexpression of eIF4E partially reversed the AEG-1 silencing-induced reduction of cyclin D1 and the inhibition of cell growth. An eIF4E knockdown also partially reversed the AEG-1 overexpression-induced upregulation of cyclin D1 and cell growth. Notably, manipulating the expression of eIF4E did not affect the expression of AEG-1. Finally, the silencing of AEG-1 expression inhibited the growth of SGC-7901 xenografts in parallel with the downregulation of eIF4E and cyclin D1 expression in the nude mouse model.Conclusion: AEG-1 promoted the growth of gastric cancer through upregulation of eIF4E/cyclin D1 signaling pathway.Keywords: AEG-1, eIF4E, cyclin D1, gastric cancerhttps://www.dovepress.com/aeg-1-promotes-the-growth-of-gastric-cancer-through-the-upregulation-o-peer-reviewed-article-OTTAEG-1eIF4Ecyclin D1gastric cancer
collection DOAJ
language English
format Article
sources DOAJ
author Wu S
Zhang Z
Wu D
Chen H
Qian X
Wang X
Huang W
spellingShingle Wu S
Zhang Z
Wu D
Chen H
Qian X
Wang X
Huang W
AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
OncoTargets and Therapy
AEG-1
eIF4E
cyclin D1
gastric cancer
author_facet Wu S
Zhang Z
Wu D
Chen H
Qian X
Wang X
Huang W
author_sort Wu S
title AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
title_short AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
title_full AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
title_fullStr AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
title_full_unstemmed AEG-1 promotes the growth of gastric cancer through the upregulation of eIF4E expression
title_sort aeg-1 promotes the growth of gastric cancer through the upregulation of eif4e expression
publisher Dove Medical Press
series OncoTargets and Therapy
issn 1178-6930
publishDate 2019-07-01
description Shengjie Wu,1,2,* Zuhao Zhang,1,* Dandan Wu,1,3 Hongling Chen,1 Xixi Qian,1 Xuerong Wang,1 Wenbin Huang41Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, People’s Republic of China; 2Department of Pharmacy, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province 310016, People’s Republic of China; 3Department of Basic Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu Province 222000, People’s Republic of China; 4Department of Pathology, Nanjing Medical University Affiliated Nanjing Hospital (Nanjing First Hospital), Nanjing, Jiangsu Province 210006, People’s Republic of China*These authors contributed equally to this workBackground: AEG-1 has been proven to be tumor enhancer in gastric cancer. However, its mechanism has not yet been fully clarified.Methods: Gain-of-function and loss-of-function experiments were conducted to determine the role of eIF4E in AEG-1-induced growth of gastric cancer cells and xenografts of a nude mouse model. Western blot analysis and SRB assay were used to determine the protein expression levels and survival cell numbers.Results: Silencing the expression of AEG-1 inhibited the growth of gastric cancer cells in parallel with a decreased eIF4E and cyclin D1 expression; however, the overexpression of AEG-1 promoted cell growth and increased eIF4E and cyclin D1 expression. Moreover, the overexpression of eIF4E partially reversed the AEG-1 silencing-induced reduction of cyclin D1 and the inhibition of cell growth. An eIF4E knockdown also partially reversed the AEG-1 overexpression-induced upregulation of cyclin D1 and cell growth. Notably, manipulating the expression of eIF4E did not affect the expression of AEG-1. Finally, the silencing of AEG-1 expression inhibited the growth of SGC-7901 xenografts in parallel with the downregulation of eIF4E and cyclin D1 expression in the nude mouse model.Conclusion: AEG-1 promoted the growth of gastric cancer through upregulation of eIF4E/cyclin D1 signaling pathway.Keywords: AEG-1, eIF4E, cyclin D1, gastric cancer
topic AEG-1
eIF4E
cyclin D1
gastric cancer
url https://www.dovepress.com/aeg-1-promotes-the-growth-of-gastric-cancer-through-the-upregulation-o-peer-reviewed-article-OTT
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