Anthrax toxin triggers endocytosis of its receptor via a lipid raft-mediated clathrin-dependent process.
Anthrax toxin triggers endocytosis of its receptor via a lipid raft-mediated clathrin-dependent process.
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DOI:
10.1083/jcb.200211018
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发表时间:
2003-02-03
期刊:
影响因子:
--
通讯作者:
van der Goot FG
中科院分区:
文献类型:
--
作者:
Abrami L;Liu S;Cosson P;Leppla SH;van der Goot FG
The protective antigen (PA) of the anthrax toxin binds to a cell surface receptor and thereby allows lethal factor (LF) to be taken up and exert its toxic effect in the cytoplasm. Here, we report that clustering of the anthrax toxin receptor (ATR) with heptameric PA or with an antibody sandwich causes its association to specialized cholesterol and glycosphingolipid-rich microdomains of the plasma membrane (lipid rafts). We find that although endocytosis of ATR is slow, clustering it into rafts either via PA heptamerization or using an antibody sandwich is necessary and sufficient to trigger efficient internalization and allow delivery of LF to the cytoplasm. Importantly, altering raft integrity using drugs prevented LF delivery and cleavage of cytosolic MAPK kinases, suggesting that lipid rafts could be therapeutic targets for drugs against anthrax. Moreover, we show that internalization of PA is dynamin and Eps15 dependent, indicating that the clathrin-dependent pathway is the major route of anthrax toxin entry into the cell. The present work illustrates that although the physiological role of the ATR is unknown, its trafficking properties, i.e., slow endocytosis as a monomer and rapid clathrin-mediated uptake on clustering, make it an ideal anthrax toxin receptor.
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影响因子:
7.8
作者:
Damke, H;Baba, T;Warnock, D E;Schmid, S L
通讯作者:
Schmid, S L
DOI:
10.1073/pnas.79.10.3162
发表时间:
1982-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
LEPPLA, SH
通讯作者:
LEPPLA, SH
DOI:
10.1083/jcb.147.1.175
发表时间:
1999-10-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
Abrami L;van Der Goot FG
通讯作者:
van Der Goot FG
影响因子:
11.4
作者:
Fivaz, M;Vilbois, F;van der Goot, FG
通讯作者:
van der Goot, FG
影响因子:
11.4
作者:
CHAPMAN, RE;MUNRO, S
通讯作者:
MUNRO, S