Fixation-induced cell blebbing on spread cells inversely correlates with phosphatidylinositol 4,5-bisphosphate level in the plasma membrane.
Fixation-induced cell blebbing on spread cells inversely correlates with phosphatidylinositol 4,5-bisphosphate level in the plasma membrane.
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固定诱导的扩散细胞上的细胞起泡与质膜中磷脂酰肌醇 4,5-二磷酸水平呈负相关。
DOI:
10.1016/j.fob.2014.02.003
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发表时间:
2014
期刊:
影响因子:
2.6
通讯作者:
Chen Y
中科院分区:
文献类型:
--
作者:
Zhao S;Liao H;Ao M;Wu L;Zhang X;Chen Y
Protein- but not lipid-stabilizing fixatives induce cell blebbing of spread cells. Asymmetric distribution of fixation-induced blebs coincides with that of PIP2. Fixation less readily induces blebbing on spread cells with elevated PIP2 levels. Fixation more readily induces blebbing on spread cells with lower PIP2 levels. Disruption of lipid rafts enhances fixation-induced blebbing of spread cells. While most attention has been focused on physiologically generated blebs, the molecular mechanisms for fixation-induced cell blebbing are less investigated. We show that protein-fixing (e.g. aldehydes and picric acid) but not lipid-stabilizing (e.g. OsO4 and KMnO4) fixatives induce blebbing on spread cells. We also show that aldehyde fixation may induce the loss or delocalization of phosphatidylinositol 4,5-bisphosphate (PIP2) in the plasma membrane and that the asymmetric distribution of fixation-induced blebs on spread/migrating cells coincides with that of PIP2 on the cells prefixed by lipid-stabilizing fixatives (e.g., OsO4). Moreover, fixation induces blebbing less readily on PIP2-elevated spread cells but more readily on PIP2-lowered or lipid raft-disrupted spread cells. Our data suggest that fixation-induced lowering of PIP2 level at cytoskeleton-attaching membrane sites causes bleb formation via local breakdown of the membrane–cytoskeleton coupling.
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影响因子:
4.8
作者:
Pike, LJ;Casey, L
通讯作者:
Casey, L
影响因子:
9.2
作者:
Hickson, GRX;Echard, A;O'Farrell, PH
通讯作者:
O'Farrell, PH
影响因子:
3.4
作者:
Charras, Guillaume T.;Coughlin, Margaret;Mahadevan, L.
通讯作者:
Mahadevan, L.
DOI:
10.1073/pnas.1207968109
发表时间:
2012-09-04
影响因子:
11.1
作者:
Bergert, Martin;Chandradoss, Stanley D.;Paluch, Ewa
通讯作者:
Paluch, Ewa
DOI:
10.1016/0005-2760(66)90013-0
发表时间:
1966-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
KORN, ED;WEISMAN, RA
通讯作者:
WEISMAN, RA