Reconstitution of recycling from the phagosomal compartment in streptolysin O-permeabilized macrophages: Role of Rab11

التفاصيل البيبلوغرافية
العنوان: Reconstitution of recycling from the phagosomal compartment in streptolysin O-permeabilized macrophages: Role of Rab11
المؤلفون: Natalia Leiva, Martin Alejandro Pavarotti, María Isabel Colombo, María T. Damiani
المصدر: Experimental Cell Research. 312:1843-1855
بيانات النشر: Elsevier BV, 2006.
سنة النشر: 2006
مصطلحات موضوعية: Cell Membrane Permeability, Recombinant Fusion Proteins, Phagocytosis, Transferrin receptor, Biology, Guanosine Diphosphate, Cell Line, GTP Phosphohydrolases, Mice, Bacterial Proteins, Phagosomes, Animals, Phagosome, Macrophages, Vesicle, Biological Transport, Cell Biology, Thionucleotides, Cell biology, Vesicular transport protein, Cytosol, Guanosine 5'-O-(3-Thiotriphosphate), rab GTP-Binding Proteins, Streptolysins, Cattle, Streptolysin, Rab
الوصف: By phagocytosis, macrophages engulf large particles, microorganisms and senescent cells in vesicles called phagosomes. Many internalized proteins rapidly shuttle back to the plasma membrane following phagosome biogenesis. Here, we report a new approach to the study of recycling from the phagosomal compartment: streptolysin O- (SLO) permeabilized macrophages. In this semi-intact cell system, energy and cytosol are required to efficiently reconstitute recycling transport. Addition of GDPbetaS strongly inhibits this transport step, suggesting that a GTP-binding protein modulates the dynamics of cargo exit from the phagosomal compartment. GTPases of the Rab family control vesicular trafficking, and Rab11 is involved in transferrin receptor recycling. To unravel the role of Rab11 in the phagocytic pathway, we added recombinant proteins to SLO-permeabilized macrophages. Rab11:S25N, a negative mutant, strongly diminishes the release of recycled proteins from phagosomes. In contrast, wild type Rab11 and its positive mutant (Rab11:Q70L) favor this vesicular transport event. Using biochemical and morphological assays, we confirm that overexpression of Rab11:S25N substantially decreases recycling from phagosomes in intact cells. These findings show the requirement of a functional Rab11 for the retrieval to the plasma membrane of phagosomal content. SLO-permeabilized macrophages likely constitute a useful tool to identify new molecules involved in regulating transport along the phagocytic pathway.
تدمد: 0014-4827
DOI: 10.1016/j.yexcr.2006.02.015
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c697b2058fd9228a431ab4758aa4c04
https://doi.org/10.1016/j.yexcr.2006.02.015
Rights: CLOSED
رقم الانضمام: edsair.doi.dedup.....7c697b2058fd9228a431ab4758aa4c04
قاعدة البيانات: OpenAIRE
الوصف
تدمد:00144827
DOI:10.1016/j.yexcr.2006.02.015