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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2009-9-18
pubmed:abstractText
Invadopodia are hair-like membrane protrusions projecting from the ventral side of the plasma membrane of tumor cells invading into an extracellular matrix (ECM). Formation of invadopodia and phagocytosis of partially degraded ECM is correlated with invasiveness of cancer cells. Many proteins associated with actin-rich punctae associated with invadopodia have been identified. However, the dynamic temporal and spatial relationship of invadopodia-related proteins and the mechanisms required for invadopodia formation remain largely unknown. Total Internal Reflection Fluorescence (TIRF) microscopy provides a powerful tool to directly visualize the dynamic membrane transportation of invadopodia-related, GFP-tagged proteins and to simultaneously monitor invadopodia formation by observation of localized degradation and phagocytosis of fluorescently labeled gelatin. Cell-substratum contacts can be visualized using a related technique, Interference Reflection Microscopy (IRM). In this chapter, we provide detailed methodologies to monitor the dynamic localizations of c-Src-eGFP using two-color TIRF microscopy along with IRM to simultaneously visualize translocation of c-Src-eGFP and invadopodia formation by degradation of AlexaFluor 568-labeled gelatin.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1940-6029
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
571
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
209-25
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Breast cancer cell movement: imaging invadopodia by TIRF and IRM microscopy.
pubmed:affiliation
Department of Oncology, Georgetown University School of Medicine, Washington, DC, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural