Title |
Galectin-3 drives glycosphingolipid-dependent biogenesis of clathrin-independent carriers
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Published in |
Nature Cell Biology, May 2014
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DOI | 10.1038/ncb2970 |
Pubmed ID | |
Authors |
Ramya Lakshminarayan, Christian Wunder, Ulrike Becken, Mark T. Howes, Carola Benzing, Senthil Arumugam, Susanne Sales, Nicholas Ariotti, Valérie Chambon, Christophe Lamaze, Damarys Loew, Andrej Shevchenko, Katharina Gaus, Robert G. Parton, Ludger Johannes |
Abstract |
Several cell surface molecules including signalling receptors are internalized by clathrin-independent endocytosis. How this process is initiated, how cargo proteins are sorted and membranes are bent remains unknown. Here, we found that a carbohydrate-binding protein, galectin-3 (Gal3), triggered the glycosphingolipid (GSL)-dependent biogenesis of a morphologically distinct class of endocytic structures, termed clathrin-independent carriers (CLICs). Super-resolution and reconstitution studies showed that Gal3 required GSLs for clustering and membrane bending. Gal3 interacted with a defined set of cargo proteins. Cellular uptake of the CLIC cargo CD44 was dependent on Gal3, GSLs and branched N-glycosylation. Endocytosis of β1-integrin was also reliant on Gal3. Analysis of different galectins revealed a distinct profile of cargoes and uptake structures, suggesting the existence of different CLIC populations. We conclude that Gal3 functionally integrates carbohydrate specificity on cargo proteins with the capacity of GSLs to drive clathrin-independent plasma membrane bending as a first step of CLIC biogenesis. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United Kingdom | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United Kingdom | 3 | 1% |
Portugal | 1 | <1% |
Netherlands | 1 | <1% |
Sweden | 1 | <1% |
China | 1 | <1% |
Japan | 1 | <1% |
United States | 1 | <1% |
Unknown | 272 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 73 | 26% |
Researcher | 60 | 21% |
Student > Master | 26 | 9% |
Student > Bachelor | 17 | 6% |
Student > Doctoral Student | 16 | 6% |
Other | 42 | 15% |
Unknown | 47 | 17% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 93 | 33% |
Biochemistry, Genetics and Molecular Biology | 65 | 23% |
Medicine and Dentistry | 17 | 6% |
Chemistry | 14 | 5% |
Neuroscience | 10 | 4% |
Other | 28 | 10% |
Unknown | 54 | 19% |