LI Lian,MEI Tong-hua,ZHOU Xiang-dong,ZHANG Xin-gao,CHE De-ya.Correlation of extracellular signal-regulated kinase signal transduction pathway with MMP-26 expression in lung adenocarcinoma[J].J Amry Med Univ (J Third Mil Med Univ),2009,31(02):136-139.
LI Lian,MEI Tong-hua,ZHOU Xiang-dong,ZHANG Xin-gao,CHE De-ya.Correlation of extracellular signal-regulated kinase signal transduction pathway with MMP-26 expression in lung adenocarcinoma[J].J Amry Med Univ (J Third Mil Med Univ),2009,31(02):136-139.DOI:
Correlation of extracellular signal-regulated kinase signal transduction pathway with MMP-26 expression in lung adenocarcinoma
Objective To investigate the correlation of extracellular signal-regulated kinase (ERK) with matrix metalloproteinase-26 (MMP-26) and its significance in lung adenocarcinoma. Methods SP immunohistochemistry was used to test the expressions of pERK
pp38MAPK and MMP-26 in 44 specimens of lung adenocarcinoma. Western blotting was used to detect the protein levels of MMP-26 in A549 cells after blocking ERK signal transduction pathway with U0126. The correlation of pERK and MMP-26 expressions with prognosis of lung adenocarcinoma was analyzed. Results The positive rates of pERK
pp38MAPK and MMP-26 proteins in lung adenocarcinoma tissues were 59.1%
20.4% and 54.5%
respectively. The expression of pERK was positively correlated to the expression of MMP-26 (r=0.63
P0.05)
and the expression of pp38MAPK was not related to MMP-26 expression (r=0.01
P0.05). The expression of pERK was correlated to lymph node metastasis and TNM stage (P0.05)
but not to age and tumor size (P0.05). pp38MAPK was not correlated to age
lymph node metastasis
tumor size or TNM stage (P0.05). U0126 concentration-dependently inhibited ERK pathway and reduced MMP-26 protein expression. The expressions of pERK and MMP-26 were negatively correlated to prognosis of lung adenocarcinoma (Log-Rank=5.52
7.01; P=0.019
0.008). Conclusion ERK signal transduction pathway might promote lung adenocarcinoma progres sion by up-regulating MMP-26 expression
and might be an important route in invasion and metastasis of lung adenocarcinoma. pERK and MMP-26 expressions might help make prognosis of lung adenocarcinoma.
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Department of Epidemiology, Faculty of Military Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, PLA Key Laboratory of Respiratory Diseases, Second Affiliated Hospital, Army Medical University (Third Military Medical University)
Institute of Respiratory Diseases, PLA Key Laboratory of Respiratory Diseases, Second Affiliated Hospital, Army Medical University (Third Military Medical University)
Department of Respiratory Disease and Critical Medicine, the First Affiliated Hospital, Zhejiang University School of Medicine
Cancer Center, the Second Affiliated Hospital of Chongqing Medical University
Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University