Journal
TRENDS IN CELL BIOLOGY
Volume 13, Issue 7, Pages 376-385Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S0962-8924(03)00128-4
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Podosomes are highly dynamic, actin-rich adhesion structures of monocyte-derived cells, certain transformed fibroblasts and carcinoma cells and have recently also been discovered in an increasing number of other cell types. Because they are found mainly in motile cells and control the activity of matrix metalloproteases, podosomes are thought to contribute to tissue invasion and matrix remodeling. Importantly, podosomes are physiologically relevant organelles because they can be found in ex vivo models of invasive cells. Regulators of podosome turnover include tyrosine kinases, RhoGTPases, actin regulators and the microtubule system. Podosomes might also serve as an attractive model to study how integration of various signaling pathways controls actin dynamics. Here, we summarize and discuss the known structural, regulatory and functional features of podosomes, our aim being to stimulate further research into these unique structures.
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