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GABRA3 promotes lymphatic metastasis in lung adenocarcinoma by mediating upregulation of matrix metalloproteinases.


ABSTRACT: Tumor metastasis is the main reason for the poor prognosis of lung cancer patients. The GABAA receptor subunit GABRA3 is reportedly upregulated in lung cancer. Herein, we show that high GABRA3 protein expression in lung adenocarcinoma correlated positively with disease stage, lymphatic metastasis status and poor patient survival. In addition, GABRA3 induced MMP-2 and MMP-9 expression through activation of the JNK/AP-1 signaling pathway, which enhanced lymphatic metastasis by lung adenocarcinoma both in vitro and in vivo. These results indicate that GABRA3 promotes lymph node metastasis and may thus be an effective therapeutic target for anticancer treatment.

SUBMITTER: Liu L 

PROVIDER: S-EPMC5078017 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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GABRA3 promotes lymphatic metastasis in lung adenocarcinoma by mediating upregulation of matrix metalloproteinases.

Liu Liping L   Yang Chenglin C   Shen Jianfei J   Huang Liyan L   Lin Weixuan W   Tang Hailing H   Liang Wenhua W   Shao Wenlong W   Zhang Haibo H   He Jianxing J  

Oncotarget 20160501 22


Tumor metastasis is the main reason for the poor prognosis of lung cancer patients. The GABAA receptor subunit GABRA3 is reportedly upregulated in lung cancer. Herein, we show that high GABRA3 protein expression in lung adenocarcinoma correlated positively with disease stage, lymphatic metastasis status and poor patient survival. In addition, GABRA3 induced MMP-2 and MMP-9 expression through activation of the JNK/AP-1 signaling pathway, which enhanced lymphatic metastasis by lung adenocarcinoma  ...[more]

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