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Objective

To investigate the effect of miR-140 on migration and invasion of non-small cell lung cancer (NSCLC) A549 cell and its regulatory mechanism.

Materials and methods

The NSCLC cell lines A549, H1650, NCI-H838, and normal lung epithelial cells BEAS-2B were purchased, and the expression of miR-140 and Smad3 in cells was detected by RT-PCR. MiR-140-inhibitor, miR-140-mimincs, miR-NC, sh-Smad3, Si-Smad3, and NC were transfected into A549 cells. Quantitative Real Time-Polymerase Chain Reaction (QRT-PCR) was used to detect the expression of miR-140 and Smad3. Transwell and cell scratch assay were used to detect cell invasion and migration. Dual-Luciferase report assay was used to study the relationship between mir-140 and Smad3.

Results

MiR-140 was lowly expressed and Smad3 was highly expressed in NSCLC cells. Cell researches showed that the overexpression of miR-140 can inhibit cell invasion and migration. The downregulation of Smad3 expression inhibits cell invasion and migration. Dual-Luciferase reporter assay showed that miR-140 is a Smad3 targeting site.

Conclusions

MiR-140 can inhibit the invasion and migration of NSCLC cells by regulating Smad3, and it is expected to become a potential clinical target."xsd:string
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http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/author"Han P."xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/author"Han Y.F."xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/author"Wang X.H."xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/author"Chen G.M."xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/date"2019"xsd:gYear
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/name"Eur Rev Med Pharmacol Sci"xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/pages"9471-9479"xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/title"MicroRNA-140's inhibition on the cell migration and invasion of non-small cell lung cancer by down-regulating Smad3 expression."xsd:string
http://purl.uniprot.org/citations/31773685http://purl.uniprot.org/core/volume"23"xsd:string
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