title: [Inhibitory effects of shRNA targeting layilin on adhesion and invasion behavior of human lung adenocarcinoma A549 cells induced by hyaluronan in vitro].
abstract: BACKGROUND
  It has been proved that hyaluronan was involved in adhesion and invasion behavior of varied tumor cells. Layilin is a receptor of hyaluronan found recently and has close relationship with cytoskeleton. The aim of this study is to investigate the effect of short hairpin RNA (shRNA) targeting layilin on adhesion and invasion behavior of human lung adenocarcinoma cell line A549 induced by hyaluronan in vitro.
  
  
  METHODS
  RNA interference plasmid that included U6 promoter and could express shRNA targeting layilin was designed, constructed, and transfected into A549 cell line. Layilin expression was examined by RT-PCR, Western blot and immunofluorescence. Adhesive and invasive ability was examined by plate adhesion model and Boyden chamber model.
  
  
  RESULTS
  After plasmid transfected, layilin expression in A549 cells obviously decreased (P < 0.01), and the numbers of adhesive A549 cells on plate and A549 cells permeating septum of Boyden chamber induced by hyaluronan also significantly decreased (P < 0.01).
  
  
  CONCLUSIONS
  The shRNA targeting layilin can efficiently inhibit the adhesive and invasive ability of A549 cells induced by hyaluronan in vitro.
authors.affiliation: Institute of Cancer, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, P.R.China.
authors.forename: Wenlei
authors.initials: W
authors.lastname: Zhuo
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhengtang
authors.initials: Z
authors.lastname: Chen