Adiponectin Increases Motility of Human Prostate Cancer Cells Via AdipoR, p38, AMPK, and NF-kappa B Pathways

作者：Tang Cih Hsin^*; Lu Mu En

来源：Prostate, 2009, 69(16): 1781-1789.

DOI：10.1002/pros.21029

• adiponectin
• prostate cancer
• integirn
• migration
• p38

BACKGROUND. Prostate cancer is the most commonly diagnosed malignancy in men. Prostate cancer shows a predilection for metastasis to the bone. Adiponectin is a protein hormone secreted predominantly by differentiated adipocytes and involved in energy homeostasis. The aim of this study was to investigate whether adiponectin is associated with migration of prostate cancer cells.
METHOD. Cancer cells migration activity was examined using the Transwell assay. The p38 and AMPK phosphorylation was examined by using Western blot method. The cell surface expression of integrins was examined by using flow cytometry. The qPCR was used to examine the mRNA expression of integrin. A transient transfection protocol was used to examine NF-kappa B activity.
RESULTS. We found that adiponectin increased the migration and the expression of alpha 5 beta 1 integrin of human prostate cancer cells. Adiponectin-mediated migration and integrins expression was attenuated by p38 inhibitor (SB203580), p38 mutant, AMPK siRNA, AMPK inhibitor (araA and compound C). Activations of p38, AMPK and NF-kappa B pathways after adiponectin treatment was demonstrated, and adiponectin-induced expression of integrins and migration activity was inhibited by the specific inhibitor and mutant of p38, AMPK, and NF-kappa B cascades.
CONCLUSIONS. This study showed for the first time that the adiponectin mediates migration of human prostate cancer cells. One of the mechanisms underlying adiponectin directed migration was transcriptional up-regulation of alpha 5 beta 1 integrin and activation of AdipoR1 receptor, p38, AMPK, and NF-kappa B pathways. Prostate 69:1781-1789, 2009.

• 出版日期2009-12-1
• 单位中国医科大学