LEM domain containing 1 promotes proliferation via activating the PI3K/Akt signaling pathway in gastric cancer.

Abstract:

:Gastric cancer (GC) is one of the most common cancers worldwide and has especially high morbidity and mortality in China. LEM domain containing 1 (LEMD1), an important cancer-testis antigen, has been reported to be overexpressed in various cancers and promotes the progression of cancers. However, the biological characteristics of LEMD1 remain to be explored in GC. The connection between LEMD1 expression and GC progression was analyzed by using The Cancer Genome Atlas datasets and our human microarray datasets. A Kaplan-Meier plot was used to analyze the relationship between LEMD1 expression and prognosis. The expression of LEMD1 was analyzed by quantitative real-time polymerase chain reaction and Western blot, and the proliferation ability of GC cells was analyzed by cell proliferation and colony formation assays and 5-ethynyl-2'-deoxyuridine analysis. The cell cycle and apoptosis were analyzed by flow cytometry. Furthermore, subcutaneously implanted tumor models in nude mice were used to demonstrate the role of LEMD1 in promoting tumor proliferation in vivo. In this study, we demonstrated that the LEMD1 expression level was increased in GC tissues and cells compared with normal tissues and GES-1. The in vivo and in vitro assays showed that LEMD1 promoted GC cell proliferation by regulating the cell cycle and apoptosis. Moreover, we showed that LEMD1 regulated cell proliferation by activating the phosphatidylinositol 3 kinase (PI3K) / protein kinase B (AKT) signaling pathway. Overall, the results of our study suggest that LEMD1 contributes to GC proliferation by regulating the cell cycle and apoptosis via activation of the PI3K/AKT signaling pathway. LEMD1 may act as a potential target for GC treatment.

journal_name

J Cell Biochem

authors

Li Q,Ge Y,Chen X,Wang L,Xia Y,Xu Z,Li Z,Wang W,Yang L,Zhang D,Xu Z

doi

10.1002/jcb.28783

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

15190-15201

issue

9

eissn

0730-2312

issn

1097-4644

journal_volume

120

pub_type

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