Lipid-gated monovalent ion fluxes regulate endocytic traffic and support immune surveillance.
Lipid-gated monovalent ion fluxes regulate endocytic traffic and support immune surveillance.
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DOI:
10.1126/science.aaw9544
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发表时间:
2020-01-17
期刊:
影响因子:
--
通讯作者:
Grinstein S
中科院分区:
文献类型:
--
作者:
Freeman SA;Uderhardt S;Saric A;Collins RF;Buckley CM;Mylvaganam S;Boroumand P;Plumb J;Germain RN;Ren D;Grinstein S
Despite ongoing (macro)pinocytosis of extracellular fluid, the volume of the endocytic pathway remains unchanged. To investigate the underlying mechanism, we used high-resolution video imaging to analyze the fate of macropinosomes formed by macrophages in vitro and in situ. Na+, the primary cationic osmolyte internalized, exited endocytic vacuoles via two pore channels (TPC), accompanied by parallel efflux of Cl− and osmotically-coupled water. The resulting shrinkage caused crenation of the membrane which fostered recruitment of curvature-sensing proteins. These proteins stabilized tubules and promoted their elongation, driving vacuolar remodeling, receptor recycling, and resolution of the organelles. Failure to resolve internalized fluid impairs the tissue surveillance activity of resident macrophages. Thus, osmotically-driven increases in the surface-to-volume ratio of endomembranes promote traffic between compartments and help to ensure tissue homeostasis.
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影响因子:
64.5
作者:
Uderhardt, Stefan;Martins, Andrew J.;Germain, Ronald N.
通讯作者:
Germain, Ronald N.
影响因子:
64.5
作者:
Freeman SA;Vega A;Riedl M;Collins RF;Ostrowski PP;Woods EC;Bertozzi CR;Tammi MI;Lidke DS;Johnson P;Mayor S;Jaqaman K;Grinstein S
通讯作者:
Grinstein S
DOI:
10.1186/1745-7580-4-5
发表时间:
2008-04-29
期刊:
Immunome research
影响因子:
--
作者:
Lattin JE;Schroder K;Su AI;Walker JR;Zhang J;Wiltshire T;Saijo K;Glass CK;Hume DA;Kellie S;Sweet MJ
通讯作者:
Sweet MJ
影响因子:
21.3
作者:
Kanai, F;Liu, H;Yaffe, MB
通讯作者:
Yaffe, MB
影响因子:
64.5
作者:
Wang X;Zhang X;Dong XP;Samie M;Li X;Cheng X;Goschka A;Shen D;Zhou Y;Harlow J;Zhu MX;Clapham DE;Ren D;Xu H
通讯作者:
Xu H