Integrating cardiac PIP3 and cAMP signaling through a PKA anchoring function of p110γ.
Integrating cardiac PIP3 and cAMP signaling through a PKA anchoring function of p110γ.
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DOI:
10.1016/j.molcel.2011.01.030
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发表时间:
2011-04-08
期刊:
影响因子:
16
通讯作者:
Hirsch E
中科院分区:
文献类型:
--
作者:
Perino A;Ghigo A;Ferrero E;Morello F;Santulli G;Baillie GS;Damilano F;Dunlop AJ;Pawson C;Walser R;Levi R;Altruda F;Silengo L;Langeberg LK;Neubauer G;Heymans S;Lembo G;Wymann MP;Wetzker R;Houslay MD;Iaccarino G;Scott JD;Hirsch E
Adrenergic stimulation of the heart engages cAMP and phosphoinositide second messenger signaling cascades. Cardiac phosphoinositide 3-kinase p110γ participates in these processes by sustaining β-adrenergic receptor internalization through its catalytic function and by controlling phosphodiesterase 3B (PDE3B) activity via an unknown kinase-independent mechanism. We have discovered that p110γ anchors protein kinase A (PKA) through a site in its N-terminal region. Anchored PKA activates PDE3B to enhance cAMP degradation and phosphorylates p110γ to inhibit PIP3 production. This provides local feedback control of PIP3 and cAMP signaling events. In congestive heart failure, p110γ is upregulated and escapes PKA-mediated inhibition, contributing to a reduction in β-adrenergic receptor density. Pharmacological inhibition of p110γ normalizes β-adrenergic receptor density and improves contractility in failing hearts.
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DOI:
10.1126/science.1175668
发表时间:
2009-11-27
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Scott JD;Pawson T
通讯作者:
Pawson T
影响因子:
4.8
作者:
Prasad, SVN;Barak, LS;Rockman, HA
通讯作者:
Rockman, HA
影响因子:
7.3
作者:
Ciraolo E;Iezzi M;Marone R;Marengo S;Curcio C;Costa C;Azzolino O;Gonella C;Rubinetto C;Wu H;Dastrù W;Martin EL;Silengo L;Altruda F;Turco E;Lanzetti L;Musiani P;Rückle T;Rommel C;Backer JM;Forni G;Wymann MP;Hirsch E
通讯作者:
Hirsch E
影响因子:
37.8
作者:
Perrino, Cinzia;Schroder, Jacob N.;Prasad, Sathyamangla V. Naga
通讯作者:
Prasad, Sathyamangla V. Naga
影响因子:
20.1
作者:
Kerfant, Benoit-Gilles;Zhao, Dongling;Backx, Peter H.
通讯作者:
Backx, Peter H.