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Cited by 475

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Cell Membrane Lipid Rafts Mediate Caveolar Endocytosis of HIV-1 Tat Fusion Proteins

Open access
Fittipaldi, Antonio, Ferrari, Aldo, Zoppé, Monica, Arcangeli, Caterina, Pellegrini, Vittorio, Beltram, Fabio, Giacca, Mauro·2003·Journal of Biological Chemistry

Abstract

The transactivator protein of human immunodeficiency virus type 1 Tat has the unique property of mediating the delivery of large protein cargoes into the cells when present in the extracellular milieu. Here we show that Tat fusion proteins are internalized by the cells through a temperature-dependent endocytic pathway that originates from cell membrane lipid rafts and follows caveolar endocytosis. These conclusions are supported by the study of the slow kinetics of the internalization of Tat endosomes, by their resistance to nonionic detergents, the colocalization of internalized Tat with markers of caveolar endocytosis, and the impairment of the internalization process by drugs that disrupt lipid rafts or disturb caveolar trafficking. These results are of interest for all those who exploit Tat as a vehicle for transcellular protein delivery.

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Metadata

Authors
Fittipaldi, A., Ferrari, A., Zoppé, M., Arcangeli, C., Pellegrini, V., Beltram, F., & Giacca, M.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2003-09
Volume
278
Issue
36
Pages
34141-34149
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2026405782
Cited by
475
References
2
FWCI
12.73
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Cell Membrane Lipid Rafts Mediate Caveolar Endocytosis of HIV-1 Tat Fusion Proteins. https://app.cochat.ai/papers/10.1074/jbc.m303045200
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Fittipaldi, A., Ferrari, A., Zoppé, M., Arcangeli, C., Pellegrini, V., Beltram, F., & Giacca, M. (2003). Cell Membrane Lipid Rafts Mediate Caveolar Endocytosis of HIV-1 Tat Fusion Proteins. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m303045200

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