Abstract:
:Migration-stimulating factor (MSF), an oncofetal truncated isoform of fibronectin, is a potent stimulator of cell invasion. However, its distribution and motogenic role in non-small cell lung cancer (NSCLC) have never been identified. In this study, real-time PCR and immunohistochemical staining (IHC) were performed to detect MSF mRNA and protein levels in tumor tissues and matched adjacent tumor-free tissues. Furthermore, to examine the effect of MSF on invasiveness, MSF was upregulated in A549 cells. The invasiveness and viability of A549 cells were then determined using a transwell migration assay and the 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) viability assays, respectively. The expression level of MSF in NSCLC tissue was markedly higher than in matched adjacent tumor-free tissue. Additionally, the level of MSF protein expression in stage III and IV NSCLC samples was higher than in stage I and II NSCLC samples. More importantly, we also demonstrated that migration and invasion of A549 cells increased substantially after upregulating MSF, although proliferation remained unchanged. Meanwhile, we found no correlation between increasing motility and invasiveness of MSF-overexpressing cells and expression levels and activities of matrix metalloprotease MMP-2 and MMP-9. Our current study shows that MSF plays a role in migration and invasion of A549 cells and suggests that MSF may be a potential biomarker of NSCLC progression.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Deng X,Ma Q,Zhang B,Jiang H,Zhang Z,Wang Ydoi
10.1016/j.yexcr.2013.05.016subject
Has Abstractpub_date
2013-10-15 00:00:00pages
2545-53issue
17eissn
0014-4827issn
1090-2422pii
S0014-4827(13)00222-Xjournal_volume
319pub_type
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