Cellular microtransport processes: intercellular, intracellular, and aggregate behavior

被引:8
|
作者
Nitsche, JM [1 ]
机构
[1] SUNY Buffalo, Dept Chem Engn, Buffalo, NY 14260 USA
关键词
diffusion; mass transfer; conductance; membrane; channel; pore; cytoplasm; ultrastructure; microstructure;
D O I
10.1146/annurev.bioeng.1.1.463
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Ionic and molecular transfer among cells occurs by a variety of transport processes operative at different length scales. Cell membrane permeability and electrical conductance derive from channel proteins producing pores at the molecular (ultrastructural) scale. Intracellular mobility involves the dynamics of motion through the complex ultrastructure of the cytoplasm. These phenomena unite in the larger-scale (microscopic) process of gross intercellular transfer. When such movement occurs among sufficiently many cells, it in turn begins to reflect their average collective (macroscopic) behavior as bulk tissue. This article surveys selected aspects of intercellular and intracellular transport, with emphasis on detailed mechanistic theory, experimental probes of cellular permeability, and systematic transcendence from small to large length scales.
引用
收藏
页码:463 / 503
页数:41
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