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Matrix modulation in monocytes

Jonathan B Weitzman

Genome Biology 2001, 2:spotlight-20010116-01  doi:10.1186/gb-spotlight-20010116-01

The electronic version of this article is the complete one and can be found online at:

Published:16 January 2001

© 2001 BioMed Central Ltd

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The interactions of cells with the extracellular matrix (ECM) are critical for orchestrating immune and inflammatory responses. In the December Immunity, de Fougerolles et al. report a comprehensive analysis of gene expression profiles affected by the attachment of monocytes to fibronectin and other ECM components (Immunity 2000, 13:749-758). They used a quantitative, restriction enzyme-based profiling method, named GeneCalling, to examine the integrin-mediated induction of genes in the monocyte cell line THP-1. De Fougerolles et al. identified over 140 genes induced by matrix attachment, including several encoding secreted cytokine factors and cell surface receptors. ECM and growth factors synergistically activated many genes regulated by the NF-kappaB and Jak/STAT signalling pathways. Furthermore, different ECM substrates induced both distinct and overlapping gene sets. Matrix-induced genes are likely to play roles in extravasation, migration and phagocytosis by monocytic cells during the inflammatory response.


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