There are a great number of plasma membrane proteins that enter cells by clathrin-independent endocytosis and we have begun to study these proteins in detail in an attempt to understand how they travel in cells and whether they specifically interact with cellular machinery. We have identified signals in the cytoplasmic tails of CD44, CD98 and CD147 that are responsible for their altered trafficking and are looking for cellular machinery that is responsible for recognition and sorting of these signals. Understanding how these proteins move into and out of cells is important because these proteins are involved in interaction with the extracellular matrix (CD44), are involved in nutrient transport (CD98) and interact with integrins and matrix metalloproteinases (CD147).

Project Start
Project End
Budget Start
Budget End
Support Year
1
Fiscal Year
2011
Total Cost
$570,933
Indirect Cost
Name
National Heart, Lung, and Blood Institute
Department
Type
DUNS #
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Stepicheva, Nadezda A; Dumas, Megan; Kobi, Priscilla et al. (2017) The small GTPase Arf6 regulates sea urchin morphogenesis. Differentiation 95:31-43
Donaldson, Julie G; Johnson, Debra L; Dutta, Dipannita (2016) Rab and Arf G Proteins in Endosomal Trafficking & Cell Surface Homeostasis. Small GTPases :0
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Dutta, Dipannita; Williamson, Chad D; Cole, Nelson B et al. (2012) Pitstop 2 is a potent inhibitor of clathrin-independent endocytosis. PLoS One 7:e45799

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