Phosphatidylserine induces apoptosis in adherent cells

Phosphatidylserine induces apoptosis in adherent cells
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磷脂酰丝氨酸诱导贴壁细胞凋亡

DOI:
--
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发表时间:
2001
期刊:
影响因子:
7.2
通讯作者:
R. Ishida
R. Ishida
中科院分区:
生物学2区
文献类型:
--
作者:
K. Iguchi;K. Hirano;M. Hamatake;R. Ishida

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磷脂酰丝氨酸(PS)在凋亡性细胞死亡中暴露在质膜的外小叶上。然而,PS在凋亡信号转导中的作用仍不清楚。在这项研究中,我们发现,外源性PS,而不是其他磷脂,诱导细胞死亡贴壁细胞,而不是在悬浮培养。细胞死亡表现为典型的凋亡特征,如细胞皱缩、核碎裂和染色质异常浓缩。当PS加入到单层培养的CHO-K1细胞中时,它们开始显示细胞形状、肌动蛋白细胞骨架和蛋白激酶C(PKC)活性的变化,随后是细胞脱离、半胱天冬酶激活、粘着斑激酶(FAK)裂解,最终丧失活力。这些结果表明PS通过破坏肌动蛋白结构、细胞脱落和FAK裂解引起细胞凋亡。
Phosphatidylserine (PS) is exposed on the outer leaflet of the plasma membrane in apoptotic cell death. However, the roles of PS in apoptotic signaling are still unclear. In this study, we found that exogenous PS, but not other phospholipids, induced cell death in adherent cells, but not in suspension culture. The cell death exhibited typical features of apoptosis such as cell shrinkage, nuclear fragmentation and abnormal chromatin condensation. When PS was added to CHO-K1 cells in monolayer culture, they began to show changes in cell shape and actin cytoskeleton and protein kinase C (PKC) activity, followed by cell detachment, caspase activation, cleavage of focal adhesion kinase (FAK) and finally loss of viability. These results suggested that PS causes apoptosis through actin disorganization, cell detachment and cleavage of FAK.
raf-1 激酶富含半胱氨酸的区域含有锌,易位至脂质体,并与结合 GTP-ras 的片段相邻。
DOI: --
发表时间: 1994
期刊: The Journal of biological chemistry
影响因子: --
作者:
Ghosh,S;Xie,WQ;Quest,AF;Mabrouk,GM;Strum,JC;Bell,RM
通讯作者: Bell,RM
DOI: 10.1091/mbc.4.9.953
发表时间: 1993-09-01
影响因子: 3.3
作者:
MEREDITH, JE;FAZELI, B;SCHWARTZ, MA
通讯作者: SCHWARTZ, MA
DOI: 10.1016/s0021-9258(18)35853-8
发表时间: 1992-11
期刊: The Journal of biological chemistry
影响因子: --
作者:
L. Kornberg;H. Earp;J. Parsons;M. D. Schaller;Rudy L. Juliano
通讯作者: L. Kornberg;H. Earp;J. Parsons;M. D. Schaller;Rudy L. Juliano
DOI: 10.1073/pnas.89.11.5192
发表时间: 1992-06-01
影响因子: 11.1
作者:
SCHALLER, MD;BORGMAN, CA;PARSONS, JT
通讯作者: PARSONS, JT