Receptor-independent, direct membrane binding leads to cell-surface lipid sorting and Syk kinase activation in dendritic cells.
Receptor-independent, direct membrane binding leads to cell-surface lipid sorting and Syk kinase activation in dendritic cells.
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DOI:
10.1016/j.immuni.2008.09.013
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发表时间:
2008-11-14
期刊:
影响因子:
32.4
通讯作者:
Shi, Yan
中科院分区:
文献类型:
--
作者:
Ng, Gilbert;Sharma, Karan;Ward, Sandra M.;Desrosiers, Melanie D.;Stephens, Leslie A.;Schoel, W. Michael;Li, Tonglei;Lowell, Clifford A.;Ling, Chang-Chun;Amrein, Matthias W.;Shi, Yan
Binding of particulate antigens by antigen presenting cells (APC) is a critical step in immune activation. Previously, we demonstrated that uric acid crystals are potent adjuvants, initiating a robust adaptive immune response. However, the mechanisms of activation are unknown. Using atomic force microscopy as a tool for real time single cell activation analysis, we report that uric acid crystals can directly engage cellular membranes, particularly the cholesterol components, with a force substantially stronger than protein based cellular contacts. Binding of particulate substances activates Syk kinase-dependent signaling in dendritic cells (DCs). These observations suggest a mechanism whereby immune cell activation can be triggered by solid structures via membrane lipid alteration without the requirement for specific cell surface receptors, and a testable hypothesis for crystal-associated arthropathies, inflammation and adjuvanticity.
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影响因子:
15.3
作者:
Fitzer-Attas, C J;Lowry, M;Crowley, M T;Finn, A J;Meng, F;DeFranco, A L;Lowell, C A
通讯作者:
Lowell, C A
DOI:
10.1073/pnas.94.23.12539
发表时间:
1997-11-11
影响因子:
11.1
作者:
Moriya, K;Rivera, J;Yamada, K
通讯作者:
Yamada, K
影响因子:
56.9
作者:
KOVACSOVICSBANKOWSKI, M;ROCK, KL
通讯作者:
ROCK, KL
影响因子:
56.9
作者:
Jordan, MB;Mills, DM;Cambier, JC
通讯作者:
Cambier, JC
DOI:
10.1084/jem.186.7.1027
发表时间:
1997-10-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Crowley MT;Costello PS;Fitzer-Attas CJ;Turner M;Meng F;Lowell C;Tybulewicz VL;DeFranco AL
通讯作者:
DeFranco AL