PMID: 9450799Feb 5, 1998Paper

Comparative adhesion of human haemopoietic cell lines to extracellular matrix components, bone marrow stromal and endothelial cultures

British Journal of Haematology
M L TurnerJ W Sweetenham

Abstract

We used flow cytometry to characterize cell adhesion molecule expression of the human haemopoietic cell lines KG1a, K562, HL-60, NALM-6 and CEM. A 51chromium labelling assay was used to study the adhesion of these cell lines to extracellular matrix components and to bone marrow stromal and endothelial cultures. Both adhesion molecule expression and functional binding behaviour varied between cell lines. All five cell lines expressed the integrins alpha4beta1 and alpha5beta1 and all adhered to fibronectin. However, differences in intensity of expression of these integrins failed to correlate with extent of fibronectin adhesion. Inhibition experiments demonstrated that adhesion of KG1a to fibronectin was completely inhibited by divalent cation chelation and partially inhibited by RGDS peptides and chondroitinase ABC, suggesting that both alpha4beta1 and alpha5beta1 as well as CD44 were responsible for this interaction. Adhesion to bone marrow stromal and endothelial layers was superior to that to purified extracellular matrix components and was partially inhibited by divalent cation chelation. RGD peptides and anti-alpha4 monoclonal antibody also partially inhibited KG1a adhesion to bone marrow endothelium. Discordance between ce...Continue Reading

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Citations

Sep 16, 2000·Experimental Hematology·R J Deans, A B Moseley
Jan 19, 2002·Journal of Hematotherapy & Stem Cell Research·C VoermansC E van der Schoot
Jun 14, 2003·Journal of Hematotherapy & Stem Cell Research·T MadhusudhanAsok Mukhopadhyay
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