Activation of G Proteins Bidirectionally Affects Apoptosis of Cultured Cerebellar Granule Neurons
Activation of G Proteins Bidirectionally Affects Apoptosis of Cultured Cerebellar Granule Neurons
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G蛋白的激活双向影响培养的小脑颗粒神经元的凋亡
DOI:
10.1046/j.1471-4159.1995.65062425.x
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发表时间:
1995
影响因子:
4.7
通讯作者:
S. Paul
中科院分区:
文献类型:
--
作者:
G. Yan;Suizhen Lin;R. P. Irwin;S. Paul
Abstract: Cultured cerebellar granule neurons maintained in depolarizing concentrations of K+ (25 mM) and then switched to physiological concentrations of K+ (5 mM) undergo apoptosis. We now report that activation of specific G proteins robustly and bidirectionally affects apoptosis of cultured rat cerebellar granule neurons. Stimulation of Gs with cholera toxin completely blocks apoptosis induced by nondepolarizing concentrations of K+, whereas stimulation of Go/Gi with the wasp venom peptide mastoparan induces apoptosis of cerebellar granule neurons even in high (depolarizing) concentrations of K+. Moreover, pretreatment of cerebellar granule neurons with cholera toxin attenuates neuronal death induced by mastoparan. By contrast, pertussis toxin, cell‐permeable analogues of cyclic AMP, and activators of protein kinase A do not affect apoptosis of cultured cerebellar granule neurons. These data suggest that G proteins may function as key switches for controlling the programmed death of mammalian neurons, especially in the developing CNS.
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DOI:
10.1146/annurev.pa.30.040190.003331
发表时间:
1990
影响因子:
12.5
作者:
L. Birnbaumer
通讯作者:
L. Birnbaumer
影响因子:
--
作者:
A. Badley;D. Dockrell;C. Payá
通讯作者:
A. Badley;D. Dockrell;C. Payá
影响因子:
3.6
作者:
Barovsky,K;Brooker,G
通讯作者:
Brooker,G
影响因子:
56.9
作者:
WHITE, K;GRETHER, ME;STELLER, H
通讯作者:
STELLER, H
DOI:
10.1016/0005-2760(89)90018-0
发表时间:
1989
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Wallace,MA;Carter,HR
通讯作者:
Carter,HR