Modulatory Effect of BAY11-7082 on CD29-mediated Cell-cell Adhesion in Monocytic U937 Cells

BAY11-7082에 의한 U937 세포의 CD29-매개성 세포간 유착과정 조절 효과

  • Kim, Byung-Hun (School of Bioscience and Biotechnology, and Institute of Bioscience and Biotechnology, Kangwon National University) ;
  • Cho, Jae-Youl (School of Bioscience and Biotechnology, and Institute of Bioscience and Biotechnology, Kangwon National University)
  • 김병훈 (강원대학교 BT학부대학 생명공학부) ;
  • 조재열 (강원대학교 BT학부대학 생명공학부)
  • Published : 2008.10.31

Abstract

BAY11-7082 was initially found to be an anti-inflammatory drug with NF-${\kappa}B$ inhibitory property. In this study, we evaluated modulatory function of BAY11-7082 on U937 cell-cell adhesion induced by CD29 (${\beta}1$-integrins). BAY11-7082 strongly blocked functional activation of CD29 (${\beta}1$-integrins), as assessed by cell-cell adhesion assay. However, this compound did not block a simple activation of CD29, as assessed by cell-fibronectin adhesion assay. In particular, to understand molecular mechanism of BAY11-7082-mediated inhibition, the regulatory roles of CD29-induced actin cytoskeleton rearrangement under cell-cell adhesion and surface level of CD29 were examined using confocal and flow cytometic analysis. Interestingly, this compound strongly suppressed the molecular association of actin cytoskeleton with CD29 at cell-cell adhesion site. Moreover, BAY11-7082 also diminished surface levels of CD29 as well as its-associated adhesion molecule CD147, but not other adhesion molecules such as CD18 and CD43. Therefore, our data suggest that BAY11-7082 may be involved in regulating immune responses managed by CD29-mediated cell-cell adhesion.

Keywords

References

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