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ADAM9 up-regulates N-cadherin via miR-218 suppression in lung adenocarcinoma cells.


ABSTRACT: Lung cancer is the leading cause of cancer death worldwide, and brain metastasis is a major cause of morbidity and mortality in lung cancer. CDH2 (N-cadherin, a mesenchymal marker of the epithelial-mesenchymal transition) and ADAM9 (a type I transmembrane protein) are related to lung cancer brain metastasis; however, it is unclear how they interact to mediate this metastasis. Because microRNAs regulate many biological functions and disease processes (e.g., cancer) by down-regulating their target genes, microRNA microarrays were used to identify ADAM9-regulated miRNAs that target CDH2 in aggressive lung cancer cells. Luciferase assays and western blot analysis showed that CDH2 is a target gene of miR-218. MiR-218 was generated from pri-mir-218-1, which is located in SLIT2, in non-invasive lung adenocarcinoma cells, whereas its expression was inhibited in aggressive lung adenocarcinoma. The down-regulation of ADAM9 up-regulated SLIT2 and miR-218, thus down-regulating CDH2 expression. This study revealed that ADAM9 activates CDH2 through the release of miR-218 inhibition on CDH2 in lung adenocarcinoma.

SUBMITTER: Sher YP 

PROVIDER: S-EPMC3976390 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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ADAM9 up-regulates N-cadherin via miR-218 suppression in lung adenocarcinoma cells.

Sher Yuh-Pyng YP   Wang Li-Ju LJ   Chuang Li-Ling LL   Tsai Mong-Hsun MH   Kuo Ting-Ting TT   Huang Cheng-Chung CC   Chuang Eric Y EY   Lai Liang-Chuan LC  

PloS one 20140404 4


Lung cancer is the leading cause of cancer death worldwide, and brain metastasis is a major cause of morbidity and mortality in lung cancer. CDH2 (N-cadherin, a mesenchymal marker of the epithelial-mesenchymal transition) and ADAM9 (a type I transmembrane protein) are related to lung cancer brain metastasis; however, it is unclear how they interact to mediate this metastasis. Because microRNAs regulate many biological functions and disease processes (e.g., cancer) by down-regulating their target  ...[more]

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