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• W76395834 abstract "To investigate the effect and the relevant molecular mechanisms of leptin on the migration and invasion of human breast cancer MCF-7 cells.The expression of OB-R in MCF-7 cells was measured by RT-PCR and Western blotting. The effects of leptin (100 ng/mL) on the the phosphorylation of a few key cell signaling proteins, p-ERK1/2, p-STAT3, p-AKT in MCF-7 cells were examined by Western blotting. Cell scratch assay and Transwell(TM); assay were utilized to measure the effects of leptin on the migration and invasion capability of MCF-7 cells, respectively. The effects of leptin on the mRNA and protein expression of matrix metalloproteinas 9 (MMP-9) and transforming growth factor β (TGF-β) were measured by RT-PCR and Western blotting.Both OB-Rb and OB-Rt were expressed in MCF-7 cells. This indicated that leptin may have significant activities in MCF7 cells. Indeed, leptin increased the phosphorylation of p-ERK1/2, p-STAT3, and p-AKT in MCF-7 cells (P < 0.05). Further, leptin promoted migration and invasion of MCF-7 cells, which were attenuated by the JAK/STAT inhibitor AG490 (50 μmol/L), and the PI3K/AKT inhibitor LY294002 (10 μmol/L) (P < 0.05). Similarly, leptin also increased the mRNA and protein expression of MMP-9 and TGF-β, and these effects were blocked by AG490 and LY294002 as well (P < 0.05).Leptin promoted the migration and invasion capabilities of MCF-7 cells. These activities may be achieved by the upregulation of MMP-9 and TGF-β through JAK/STAT and PI3K/AKT signaling pathways." @default.
• W76395834 created "2016-06-24" @default.
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• W76395834 date "2013-12-01" @default.
• W76395834 modified "2023-09-23" @default.
• W76395834 title "[The effect of leptin and its mechanisms on the migration and invasion of human breast cancer MCF-7 cells]." @default.
• W76395834 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24321071" @default.
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