Calcium-sensing soluble adenylyl cyclase mediates TNF signal transduction in human neutrophils.
Calcium-sensing soluble adenylyl cyclase mediates TNF signal transduction in human neutrophils.
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DOI:
10.1084/jem.20050778
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发表时间:
2005-08-01
期刊:
影响因子:
--
通讯作者:
Nathan C
中科院分区:
文献类型:
--
作者:
Han H;Stessin A;Roberts J;Hess K;Gautam N;Kamenetsky M;Lou O;Hyde E;Nathan N;Muller WA;Buck J;Levin LR;Nathan C
Through chemical screening, we identified a pyrazolone that reversibly blocked the activation of phagocyte oxidase (phox) in human neutrophils in response to tumor necrosis factor (TNF) or formylated peptide. The pyrazolone spared activation of phox by phorbol ester or bacteria, bacterial killing, TNF-induced granule exocytosis and phox assembly, and endothelial transmigration. We traced the pyrazolone's mechanism of action to inhibition of TNF-induced intracellular Ca2+ elevations, and identified a nontransmembrane (“soluble”) adenylyl cyclase (sAC) in neutrophils as a Ca2+-sensing source of cAMP. A sAC inhibitor mimicked the pyrazolone's effect on phox. Both compounds blocked TNF-induced activation of Rap1A, a phox-associated guanosine triphosphatase that is regulated by cAMP. Thus, TNF turns on phox through a Ca2+-triggered, sAC-dependent process that may involve activation of Rap1A. This pathway may offer opportunities to suppress oxidative damage during inflammation without blocking antimicrobial function.
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影响因子:
56.9
作者:
Kawasaki, H;Springett, GM;Graybiel, AM
通讯作者:
Graybiel, AM
DOI:
10.1083/jcb.111.5.2171
发表时间:
1990-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Nathan C;Sanchez E
通讯作者:
Sanchez E
影响因子:
4.8
作者:
Litvin, TN;Kamenetsky, M;Levin, LR
通讯作者:
Levin, LR
DOI:
10.1073/pnas.83.9.2919
发表时间:
1986-05-01
影响因子:
11.1
作者:
KRUSKAL, BA;SHAK, S;MAXFIELD, FR
通讯作者:
MAXFIELD, FR
DOI:
10.1083/jcb.133.4.895
发表时间:
1996-05
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lowell CA;Fumagalli L;Berton G
通讯作者:
Berton G