Cyclic ADP‐ribose and inositol 1,4,5‐trisphosphate mobilizes Ca2+ from distinct intracellular pools in permeabilized lacrimal acinar cells
Cyclic ADP‐ribose and inositol 1,4,5‐trisphosphate mobilizes Ca2+ from distinct intracellular pools in permeabilized lacrimal acinar cells
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环状 ADP-核糖和肌醇 1,4,5-三磷酸从透化的泪腺腺泡细胞的不同细胞内池中调动 Ca2+
DOI:
10.1016/0014-5793(95)00131-r
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发表时间:
1995
期刊:
影响因子:
3.5
通讯作者:
S. Dissing
中科院分区:
文献类型:
--
作者:
J. Gromada;T. D. Jørgensen;S. Dissing
In permeabilized lacrimal acinar cells, cyclic ADP-ribose (cADP-ribose) and inositol 1,4,5-trisphosphate (Ins(1,4,5)P3) release Ca2+in a dose dependent manner from distinct thapsigargin-sensitive Ca2+pools. Ryanodine specifically blocks the Ca2+response to cADP-ribose, whereas heparin strongly reduces the response to Ins(1,4,5)P3application. GTP causes a rapid Ca2+release by a ryanodine- and heparin-insensitive mechanism and potentiates Ins(1,4,5)P3but not cADP-ribose evoked Ca2+release. It is estimated that cADP-ribose can release 16 μmol Ca2+/I cells, whereas Ins(1,4,5)P3can mobilize 55 μmol Ca2+/I cells. The results suggest that cADP-ribose and Ins(1,4,5)P3release Ca2+from distinct internal stores and that a third Ca2+pool exists which can selectively interact with the Ins(1,4,5)P3-sensitive Ca2+store by a GTP-mediated process.
影响因子:
56.9
作者:
ALLBRITTON, NL;MEYER, T;STRYER, L
通讯作者:
STRYER, L
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ghosh,TK;Eis,PS;Mullaney,JM;Ebert,CL;Gill,DL
通讯作者:
Gill,DL