Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131, United States.
J Biotechnol. 2011 Feb 10;151(3):261-70. doi: 10.1016/j.jbiotec.2010.12.009. Epub 2010 Dec 15.
Experimental evidence suggests that the cell membrane is a highly organized structure that is compartmentalized by the underlying membrane cytoskeleton (MSK). The interaction between the cell membrane and the cytoskeleton led to the "picket-fence" model, which was proposed to explain certain aspects of membrane compartmentalization. This model assumes that the MSK hinders and confines the motion of receptors and lipids to compartments in the membrane. However, the impact of the MSK on receptor clustering, aggregation, and downstream signaling remains unclear. For example, some evidence suggests that the MSK enhances dimerization, while other evidence suggests decreased dimerization and signaling. Herein, we use computational Monte Carlo simulations to examine the effects of MSK density and receptor concentration on receptor dimerization and clustering. Preliminary results suggest that the MSK may have the potential to induce receptor clustering, which is a function of both picket-fence density and receptor concentration.
实验证据表明,细胞膜是一种高度组织化的结构,由下面的膜细胞骨架 (MSK) 分隔。细胞膜和细胞骨架之间的相互作用导致了“尖桩篱笆”模型的提出,该模型旨在解释膜分隔的某些方面。该模型假设 MSK 阻碍和限制受体和脂质在膜中的隔室中的运动。然而,MSK 对受体聚集、聚集和下游信号转导的影响尚不清楚。例如,有证据表明 MSK 增强二聚化,而其他证据表明二聚化和信号转导减少。在此,我们使用计算蒙特卡罗模拟来研究 MSK 密度和受体浓度对受体二聚化和聚集的影响。初步结果表明,MSK 可能具有诱导受体聚集的潜力,这是尖桩篱笆密度和受体浓度的共同作用。