Biological hydrogels as selective diffusion barriers.
Biological hydrogels as selective diffusion barriers.
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DOI:
10.1016/j.tcb.2011.06.002
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发表时间:
2011-09
影响因子:
19
通讯作者:
Ribbeck K
中科院分区:
文献类型:
--
作者:
Lieleg O;Ribbeck K
The controlled exchange of molecules between organelles, cells, or organisms and their environment is critical for life. Biological gels such as mucus, the extracellular matrix or the biopolymer barrier within the nuclear pore are well suited to achieve such a selective exchange, allowing for the passage of certain molecules while rejecting many others. Although hydrogel-based filters are integral parts of biology, clear concepts of how their barrier function is controlled on a microscopic level are still missing. Here, we summarize our current understanding of how selective filtering is established by different biopolymer-based hydrogels. We ask if the modulation of microscopic particle transport in biological hydrogels might be based on a generic filtering principle, which employs biochemical/biophysical interactions with the filtered molecules rather than size exclusion effects.
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