Phosphoinositide 3-kinase δ regulates membrane fission of Golgi carriers for selective cytokine secretion.
Phosphoinositide 3-kinase δ regulates membrane fission of Golgi carriers for selective cytokine secretion.
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磷酸肌醇3-激酶δ调节高尔基体载体的膜裂变,以进行选择性细胞因子分泌。
DOI:
10.1083/jcb.201001028
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发表时间:
2010-09-20
期刊:
影响因子:
--
通讯作者:
Stow JL
中科院分区:
文献类型:
--
作者:
Low PC;Misaki R;Schroder K;Stanley AC;Sweet MJ;Teasdale RD;Vanhaesebroeck B;Meunier FA;Taguchi T;Stow JL
The PI3K isoform p110δ is required for TNF trafficking and secretion. Phosphoinositide 3-kinase (PI3K) p110 isoforms are membrane lipid kinases classically involved in signal transduction. Lipopolysaccharide (LPS)-activated macrophages constitutively and abundantly secrete proinflammatory cytokines including tumor necrosis factor-α (TNF). Loss of function of the p110δ isoform of PI3K using inhibitors, RNA-mediated knockdown, or genetic inactivation in mice abolishes TNF trafficking and secretion, trapping TNF in tubular carriers at the trans-Golgi network (TGN). Kinase-active p110δ localizes to the Golgi complex in LPS-activated macrophages, and TNF is loaded into p230-labeled tubules, which cannot undergo fission when p110δ is inactivated. Similar blocks in fission of these tubules and in TNF secretion result from inhibition of the guanosine triphosphatase dynamin 2. These findings demonstrate a new function for p110δ as part of the membrane fission machinery required at the TGN for the selective trafficking and secretion of cytokines in macrophages.
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影响因子:
3.6
作者:
Dil, Nyla;Marshall, Aaron J.
通讯作者:
Marshall, Aaron J.
DOI:
10.1083/jcb.138.3.495
发表时间:
1997-08-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chen YG;Siddhanta A;Austin CD;Hammond SM;Sung TC;Frohman MA;Morris AJ;Shields D
通讯作者:
Shields D
影响因子:
4.8
作者:
Domin, J;Gaidarov, I;Waterfield, MD
通讯作者:
Waterfield, MD
影响因子:
64.8
作者:
Ali, K;Bilancio, A;Vanhaesebroeck, B
通讯作者:
Vanhaesebroeck, B
影响因子:
64.5
作者:
Jaiswal JK;Rivera VM;Simon SM
通讯作者:
Simon SM