Stimulation of DNA synthesis by an inositol polyphosphate-activated protein phosphatase in calcium-deprived rat liver cells.

Stimulation of DNA synthesis by an inositol polyphosphate-activated protein phosphatase in calcium-deprived rat liver cells.
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肌醇多磷酸激活蛋白磷酸酶在缺钙大鼠肝细胞中刺激 DNA 合成。

DOI:
10.1016/0014-4827(90)90081-k
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发表时间:
1990
影响因子:
3.7
通讯作者:
Boynton,AL
Boynton,AL
中科院分区:
医学3区
文献类型:
--
作者:
Zwiller,J;Honkanen,RE;Boynton,AL

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在非肿瘤细胞中,细胞周期复制前G1期的特定阶段需要细胞外钙离子才能成功过渡。这是G0-G1和G1-S的转变。多种试剂能够替代钙离子,并至少部分刺激细胞复制它们的染色体。其中一种激动剂,肌醇1,3,4,5-四氢磷酸[INS(1,3,4,5)P4],也被我们证明可以刺激一种磷酸蛋白磷酸酶的活性。在去钙的G1-S阻断的T51B大鼠肝细胞中加入纯化的蛋白磷酸酶制剂,可刺激部分快速反应的细胞进入S时相,这一作用可被蛋白磷酸酶抑制剂肝素和抑制剂2阻断。
Specific stages of the prereplicative G1 phase of the cell cycle in nonneoplastic cells requires extracellular Ca2+for successful transition. These are the G0-G1 and the G1-S transitions. A variety of agents are able to replace Ca2+and to at least partially stimulate cells to replicate their chromosomes. One of these agonist, inositol 1,3,4,5-tetrakisphosphate [Ins(1,3,4,5)P4], has been demonstrated by us to also stimulate the activity of a phosphoprotein phosphatase. The addition of a purified preparation of the protein phosphatase to Ca2+-deprived G1-S-blocked T51B rat liver cells stimulates a rapidly responding fraction of cells to enter their S phase, and this effect is blocked by protein phosphatase inhibitors heparin and inhibitor 2.
Ca2/磷脂依赖性蛋白激酶参与 T51B 大鼠肝上皮细胞的 G1 转运。
DOI: --
发表时间: 1985
影响因子: 3.7
作者:
A. Boynton;L. Kleine;J. Whitfield;D. Bossi
通讯作者: D. Bossi
DOI: 10.1126/science.2847317
发表时间: 1988-11-25
期刊: SCIENCE
影响因子: 56.9
作者:
HILL, TD;DEAN, NM;BOYNTON, AL
通讯作者: BOYNTON, AL
肌醇三磷酸和四磷酸在激活 Ca2 依赖性 K 通道中的协同作用
DOI: --
发表时间: 1987
期刊: Nature
影响因子: 64.8
作者:
Andrew P. Morris;D. Gallacher;R. Irvine;Ole H. Petersen
通讯作者: Ole H. Petersen
DOI: --
发表时间: 1980
影响因子: 5.2
作者:
S. Swierenga;J. Whitfield;A. Boynton;J. Macmanus;R. Rixon;M. Sikorska;B. Tsang;P. Walker
通讯作者: P. Walker
DOI: 10.1016/s0006-291x(88)80561-8
发表时间: 1988
影响因子: 3.1
作者:
Zwiller,J;Ogasawara,EM;Nakamoto,SS;Boynton,AL
通讯作者: Boynton,AL