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RAGE acts as an oncogenic role and promotes the metastasis of human lung cancer
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RAGE acts as an oncogenic role and promotes the metastasis of human lung cancer
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Journal Article
RAGE acts as an oncogenic role and promotes the metastasis of human lung cancer
2020
Overview
RAGE (receptor for advanced glycation end-product) is thought to be associated with metastasis and poor prognosis of various types of cancer. However, RAGE is constitutively expressed in the normal lung and down-regulated in cancerous lung, while the opposite evidence shows that RAGE-mediated signaling contributes to the tumorigenesis of lung cancer. Therefore, the role of RAGE in lung cancer progression is still unclear to be further investigated. In this study, RAGE-overexpressed stable clones of human lung cancer A549 cells and two local lung adenocarcinoma cell lines CL1-0 and CL1-5 were utilized to verify the effect of RAGE on lung cancer cells while the in vivo xenograft animal model was further performed to evaluate the role of RAGE in the progression of lung cancer. The growth of A549 cells was inhibited by RAGE overexpression. p53-dependent p21
CIP1
expression contributed to RAGE-induced growth inhibition by suppressing CDK2 kinase activity and retinoblastoma protein (RB) phosphorylation in vitro. On the other hand, RAGE overexpression promoted migration, invasion, and mesenchymal features of lung adenocarcinoma cells through ERK signaling. Furthermore, an in vivo xenograft experiment indicated that RAGE promoted the metastasis of lung cancer cells with p21
CIP1
up-regulation, ERK activation, and the changes of EMT markers. Regarding to the involvement of tumor-associated macrophage (TAM) in the microenvironment, we monitored the expressions of TAM markers including CD68 and CD163 as well as angiogenesis marker CD31 in xenograft slice. The data showed that RAGE might induce the accumulation of TAM in lung cancer cells and further accelerate the in vivo tumor growth. In summary, our study provides evidence indicating the distinct in vitro and in vivo effects of RAGE and related mechanisms on tumor growth and metastasis, which shed light on the oncogenic role of RAGE in lung cancer.
Publisher
Nature Publishing Group UK,Springer Nature B.V
Subject
/ 13/31
/ 13/51
/ 13/95
/ 14
/ 14/19
/ 64/60
/ 82
/ 82/29
/ 82/51
/ 82/80
/ Animals
/ Biomedical and Life Sciences
/ Cancer
/ Cyclin-dependent kinase inhibitor p21
/ Extracellular signal-regulated kinase
/ Humans
/ Kinases
/ Lung Neoplasms - complications
/ Male
/ Mice
/ Receptor for Advanced Glycation End Products - genetics
/ Retina
