Caffeine, an inhibitor of endocytosis in dictyostelium discoideum amoebae
Caffeine, an inhibitor of endocytosis in dictyostelium discoideum amoebae
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咖啡因,盘基网柄菌阿米巴内吞作用的抑制剂
DOI:
10.1002/jcp.1041440307
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发表时间:
1990
影响因子:
5.6
通讯作者:
M. Satre
中科院分区:
文献类型:
--
作者:
C. González;G. Klein;M. Satre
The effect of the trimethylxanthine, caffeine, was examined on the growth and endocytosis pathways of the vegetative amoebae of the cellular slime mold Dic‐tyostelium discoideum. Caffeine at concentrations of 1.5–3 mM was found to inhibit axenic growth, fluid‐phase pinocytosis, and secretion of lysosomal enzymes. Cell viability was unaffected by incubation for 16 hours with 5 mM caffeine but decreased markedly thereafter. Phagocytosis of the bacterium Esch‐erichia coli by Dictyostelium amoebae was also inhibited by caffeine, although at concentrations twofold to threefold higher. Caffeine rapidly entered into amoebae to reach an equilibrium between extracellular and intracellular concentrations, and it was not appreciably metabolized by Dictyostelium. Inhibition of growth and endocytosis was reversible upon removal of the drug and was partially counteracted by 10 mM adenosine. As caffeine discharged intracellular calcium stores in Dictyostelium (Abe et al., 1988), its inhibitory effect on endocytosis could result from the perturbation of calcium homeostasis. In agreement with this hypothesis, the cation La3+ (10 μM), a Ca2+‐transport inhibitor, also strongly reduced fluid‐phase pinocy'osis.
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影响因子:
--
作者:
Klein,P;Theibert,A;Devreotes,P
通讯作者:
Devreotes,P
DOI:
10.1016/0167-4889(87)90140-6
发表时间:
1987
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Khachatrian,L;Klein,C;Howlett,A
通讯作者:
Howlett,A
影响因子:
--
作者:
Clarke,M;Kayman,SC
通讯作者:
Kayman,SC
DOI:
10.1002/dvg.1020090411
发表时间:
1988
期刊:
Developmental genetics
影响因子:
--
作者:
Drummond,IA;Chisholm,RL
通讯作者:
Chisholm,RL
DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Dimond,RL;Burns,RA;Jordan,KB
通讯作者:
Jordan,KB