Khumalo, T.Reusch, U.Knackmuss, S.Little, M.Weiss, S.F.T.Chetty, C.Da Costa Dias, B.2016-10-172016-10-172014-05-05Chetty, C. et al.2014. Anti-LRP/LR specific antibody IgG1-iS18 impedes adhesion and invasion of liver cancer cells. PLOS ONE 9 (5):e96268.1932-6203http://hdl.handle.net/10539/21211Two key events, namely adhesion and invasion, are pivotal to the occurrence of metastasis. Importantly, the 37 kDa/67 kDa laminin receptor (LRP/LR) has been implicated in enhancing these two events thus facilitating cancer progression. In the current study, the role of LRP/LR in the adhesion and invasion of liver cancer (HUH-7) and leukaemia (K562) cells was investigated. Flow cytometry revealed that the HUH-7 cells displayed significantly higher cell surface LRP/LR levels compared to the poorly-invasive breast cancer (MCF-7) control cells, whilst the K562 cells displayed significantly lower cell surface LRP/LR levels in comparison to the MCF-7 control cells. However, Western blotting and densitometric analysis revealed that all three tumorigenic cell lines did not differ significantly with regards to total LRP/LR levels. Furthermore, treatment of liver cancer cells with anti-LRP/LR specific antibody IgG1-iS18 (0.2 mg/ml) significantly reduced the adhesive potential of cells to laminin-1 and the invasive potential of cells through the ECM-like Matrigel, whilst leukaemia cells showed no significant differences in both instances. Additionally, Pearson's correlation coefficients suggested direct proportionality between cell surface LRP/LR levels and the adhesive and invasive potential of liver cancer and leukaemia cells. These findings suggest the potential use of anti-LRP/LR specific antibody IgG1-iS18 as an alternative therapeutic tool for metastatic liver cancer through impediment of the LRP/LR- laminin-1 interaction.enIgG1 iS18immunoglobulin Gmatrigelreceptor antibodyunclassified drugantiidiotypic antibodyimmunoglobulin Glamininlaminin 1laminin receptorantibody specificitybreast cancercancer inhibitioncell adhesioncell levelcell surfacecontrolled studydensitometryleukemiaArticle