Calcium Influx Through AMPA Receptors and Through Calcium Channels Is Regulated by Protein Kinase C in Cultured Retina Amacrine‐Like Cells
Calcium Influx Through AMPA Receptors and Through Calcium Channels Is Regulated by Protein Kinase C in Cultured Retina Amacrine‐Like Cells
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在培养的视网膜无长突样细胞中,通过 AMPA 受体和钙通道的钙流入受到蛋白激酶 C 的调节
DOI:
10.1046/j.1471-4159.1998.70052112.x
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发表时间:
1998
影响因子:
4.7
通讯作者:
E. Pires
中科院分区:
文献类型:
--
作者:
A. Carvalho;C. Duarte;Carlos J. Faro;A. Carvalho;E. Pires
Abstract: The functional modulation of the α‐amino‐3‐hydroxy‐5‐methyl‐4‐isoxazolepropionate (AMPA) receptors by protein kinase C (PKC) was investigated in cultures enriched in retinal amacrine‐like cells. The kainate‐evoked [Ca2+]i increase is due to Ca2+ entry through open AMPA receptor channels, because it was blocked by the active isomer of a 2,3‐benzodiazepine (LY 303070), an AMPA receptor antagonist. The AMPA receptor response to kainate was potentiated by phorbol 12‐myristate 13‐acetate, which specifically stimulates PKC, and it was decreased by bisindolylmaleimide I, a selective inhibitor of PKC, as well as by PKC down‐regulation. The results indicate not only that the AMPA receptor activation has a PKC requirement, but also that PKC amplifies maximal receptor activation by 100 µM kainate. The effect of PKC activation or inhibition on voltage‐gated Ca2+‐channel activity was also investigated. Activation of PKC caused inhibition of Ca2+ channels, and the same effect was produced by inhibition of PKC, whereas the inactive analogue of the phorbol ester did not affect channel activity. Our results show an important role for PKC in regulating the function of both AMPA receptors and Ca2+ channels in cultured retina cells.
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影响因子:
2.9
作者:
LIU, J;ALBERS, MW;SCHREIBER, SL
通讯作者:
SCHREIBER, SL
DOI:
10.1113/jphysiol.1994.sp020083
发表时间:
1994-03
期刊:
The Journal of Physiology
影响因子:
--
作者:
L. Wang;E. Dudek;M. Browning;J. Macdonald
通讯作者:
L. Wang;E. Dudek;M. Browning;J. Macdonald
DOI:
--
发表时间:
1989
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Murphy,SN;Miller,RJ
通讯作者:
Miller,RJ
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hell,JW;Appleyard,SM;Yokoyama,CT;Warner,C;Catterall,WA
通讯作者:
Catterall,WA
DOI:
10.1016/0006-291x(86)90439-0
发表时间:
1986
影响因子:
3.1
作者:
Messing,RO;Carpenter,CL;Greenberg,DA
通讯作者:
Greenberg,DA