Interaction of lysophosphatidylcholine with phosphatidylcholine bilayers. A photo-physical and NMR study.

Interaction of lysophosphatidylcholine with phosphatidylcholine bilayers. A photo-physical and NMR study.
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溶血磷脂酰胆碱与磷脂酰胆碱双层的相互作用。

DOI:
10.1016/0005-2736(80)90185-6
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发表时间:
1980
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Thomas,JK
Thomas,JK
中科院分区:
--
文献类型:
--
作者:
Morris,DA;McNeil,R;Castellino,FJ;Thomas,JK

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几种光物理方法与 31 P-NMR 一起已被用来研究溶血磷脂酰胆碱对磷脂酰胆碱双层的影响。 31 P-NMR 显示囊泡对 Eu3+ 的渗透性急剧增加至约 10%以上。 40% 溶血磷脂酰胆碱:荧光猝灭研究也显示出这种类型的行为。通过光物理技术在此溶血磷脂酰胆碱/磷脂酰胆碱组合物中观察到囊泡性质的类似急剧变化。芘和芘甲醛的荧光光谱表明,溶血磷脂酰胆碱成分的增加使这些探针的环境极性增加了高达 40% 的溶血化合物。在该组合物之上,探针的光物理性质慢慢恢复到胶束溶血化合物的那些特征。芘荧光寿命、荧光的精细结构以及在这些双层混合物中形成芘准分子的情况表明,芘与磷脂酰胆碱的胆碱基团的带电氮微弱络合,并且系统的物理状态对该络合过程具有显着影响。简单四元化合物的类似实验有力地支持了这一建议。这些研究以多种方式监测双层组成对这些系统中分子运动的影响。致癌物的溶解程度或溶解部位也受到其组成的独特影响。
Several photo-physical methods together with31P-NMR have been used to investigate the effect of lysophosphatidylcholine on phosphatidylcholine bilayers.31P-NMR shows that the permeability of the vesicle to Eu3+increases sharply above approx. 40% lysophosphatidylcholine: fluorescence-quenching studies also show this type of behavior. Similar sharp changes in vesicle properties are observed via the photo-physical technique at this lysophosphatidylcholine/phosphatidylcholine composition. Fluorescence spectra of pyrene and pyrene carboxaldehyde show that increasing lysophosphatidylcholine composition increases the polarity of the environments of these probes up to 40% lysocompound. Above this composition the photo-physical properties of the probes slowly revert to those characteristic of the micellar lyso-compound. The pyrene fluorescence lifetime, the fine structure of the fluorescence, and the case of formation of pyrene excimer in these bilayer mixtures suggest that pyrene complexes weakly with the charged nitrogen of the choline group of the phosphatidylcholine and that the physical state of the system has a striking effect on this complexation process. Similar experiments with simple quaternary compounds lend strong support to this suggestion. The studies monitor in several ways the effect of bilayer composition on movement of molecules in these systems. The degree or site of solubilization of carcinogens is also uniquely affected by composition.
使用富含 (N-13CH3) 的脂质通过 13C-NMR 测定磷脂酰胆碱囊泡中溶血磷脂酰胆碱的外向内分布和易位
DOI: 10.1016/0005-2736(77)90263-2
发表时间: 1977
期刊: Biochimica et Biophysica Acta
影响因子: --
作者:
B. D. Kruyff;A. Besselaar;L. M. Deenen
通讯作者: L. M. Deenen
胶束中的快速反应
DOI: 10.1002/bbpc.19780820945
发表时间: 1978
影响因子: 2.2
作者:
J. K. Thomas;F. Grieser;M. Wong
通讯作者: M. Wong
通过分子内氢键阻碍旋转:关于二甲酮醛加合物的开场陈述
DOI: 10.1016/0022-2364(69)90071-7
发表时间: 1969
影响因子: 2.2
作者:
S. Forsén;W. E. Frankle;P. Laszlo;J. Lubochinsky
通讯作者: J. Lubochinsky
DOI: 10.1021/j100705a008
发表时间: 1970
期刊: The Journal of Physical Chemistry
影响因子: --
作者:
R. Mcneil;J. Richards;J. K. Thomas
通讯作者: J. K. Thomas
链长对卵磷脂双层稳定性的影响。
DOI: --
发表时间: 1973
期刊: Biochemical and Biophysical Research Communications - BBRC
影响因子: --
作者:
H. Hauser;M. Barratt
通讯作者: M. Barratt