Cellular responses to patterned poly(acrylic acid) brushes.
Cellular responses to patterned poly(acrylic acid) brushes.
复制标题
DOI:
10.1021/la200093e
复制
发表时间:
2011-06-07
期刊:
影响因子:
--
通讯作者:
Baird BA
中科院分区:
文献类型:
--
作者:
Chiang EN;Dong R;Ober CK;Baird BA
We use patterned poly(acrylic acid) (PAA) polymer brushes to explore the effects of surface chemistry and topography on cell-surface interactions. Most past studies of surface topography effects on cell adhesion have focused on patterned feature sizes that are larger than the dimensions of a cell, and PAA brushes have been characterized as cell repellent. Here we report cell adhesion studies for RBL mast cells incubated on PAA brush surfaces patterned with a variety of different feature sizes. We find that when patterned at sub-cellular dimensions on silicon surfaces, PAA brushes that are 30 or 15 nm thick facilitate cell adhesion. This appears to be mediated by fibronectin, which is secreted by the cells, adsorbing to the brushes and then engaging cell surface integrins. The result is detectable accumulation of plasma membrane within the brushes, and this involves cytoskeletal remodeling at the cell-surface interface. By decreasing brush thickness, we find that PAA can be ‘tuned’ to promote cell adhesion with down-modulated membrane accumulation. We exemplify the utility of patterned PAA brush arrays for spatially controlling the activation of cells by modifying brushes with ligands that specifically engage IgE bound to high affinity receptors on mast cells.
登录
查看更多内容
DOI:
10.1083/jcb.200503110
发表时间:
2005-11-07
期刊:
The Journal of cell biology
影响因子:
--
作者:
Larson DR;Gosse JA;Holowka DA;Baird BA;Webb WW
通讯作者:
Webb WW
影响因子:
2.9
作者:
Das, Raibatak;Baird, Emily;Goldstein, Byron
通讯作者:
Goldstein, Byron
影响因子:
15
作者:
Senaratne, W;Sengupta, P;Baird, B
通讯作者:
Baird, B
DOI:
10.1073/pnas.0802138105
发表时间:
2008-11-11
影响因子:
11.1
作者:
Torres, Alexis J.;Vasudevan, Lavanya;Baird, Barbara A.
通讯作者:
Baird, Barbara A.
DOI:
10.1073/pnas.0403835101
发表时间:
2004-09-21
影响因子:
11.1
作者:
Wu, M;Holowka, D;Baird, B
通讯作者:
Baird, B