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钙离子和二价阳离子载体A23187对仙台病毒引起鸡红细胞凝集和融合的影响。

Effects of calcium ions and the bivalent cation ionophore A23187 on the agglutination and fusion of chicken erythrocytes by Sendai virus.

作者信息

Hart C A, Fisher D, Hallinan T, Lucy J A

出版信息

Biochem J. 1976 Jul 15;158(1):141-5. doi: 10.1042/bj1580141.

Abstract
  1. Ca2+ (0.4-16 mM) had no detectable action on the agglutination of hen erythrocytes by Sendai virus. 2. Pretreatment of the cells with Ca2+ (0.1-8 mM) in the presence of the bivalent cation ionophore A23187 led, however, to a significant decrease in the subsequent agglutination of the cells by the virus. 3. It thus appears that the entry of Ca2+ into the interior of these cells decreases cellular agglutination by Sendai virus; possible interpretations of this phenomenon are discussed in terms of the movement of intramembranous particles. 4. With a small number of virions, maximum cell fusion by Sendai virus occurred in the presence of EGTA [ethanedioxybis(ethylamine)tetra-acetate]. 5. Virus-induced cell fusion was significantly decreased by Ca2+, even at a concentration of 0.2 mM; it is suggested that this may result from diminished interactions between virus particles and erythrocyte membranes.
摘要
  1. 钙离子(0.4 - 16毫摩尔)对仙台病毒引起的鸡红细胞凝集没有可检测到的作用。2. 然而,在二价阳离子载体A23187存在的情况下,用钙离子(0.1 - 8毫摩尔)预处理细胞,会导致随后病毒对细胞的凝集显著减少。3. 因此,似乎钙离子进入这些细胞内部会减少仙台病毒引起的细胞凝集;根据膜内颗粒的移动对这一现象进行了可能的解释。4. 对于少量病毒粒子,在乙二醇双(乙胺)四乙酸(EGTA)存在的情况下,仙台病毒会发生最大程度的细胞融合。5. 即使钙离子浓度为0.2毫摩尔,病毒诱导的细胞融合也会显著减少;这表明这可能是由于病毒粒子与红细胞膜之间的相互作用减弱所致。

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Characteristics of Sendai virus receptors in a model membrane.模型膜中仙台病毒受体的特征
J Mol Biol. 1974 Mar 15;83(4):427-36. doi: 10.1016/0022-2836(74)90504-x.

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