Nanoscale ligand spacing influences receptor triggering in T cells and NK cells.
Nanoscale ligand spacing influences receptor triggering in T cells and NK cells.
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DOI:
10.1021/nl403252x
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发表时间:
2013
期刊:
影响因子:
10.8
通讯作者:
Dunlop IE
中科院分区:
文献类型:
--
作者:
Delcassian D;Depoil D;Rudnicka D;Liu M;Davis DM;Dustin ML;Dunlop IE
Bioactive nanoscale arrays were constructed to ligate activating cell surface receptors on T cells (the CD3 component of the TCR complex) and NK cells (CD16). These arrays are formed from biofunctionalized gold nanospheres with controlled interparticle spacing in the range 25 – 104 nm. Responses to these nanoarrays were assessed using the extent of membrane-localized phosphotyrosine in T cells stimulated with CD3-binding nanoarrays, and the size of cell contact area for NK cells stimulated with CD16-binding nanoarrays. In both cases, the strength of response decreased with increasing spacing, falling to background levels by 69 nm in the T cell/anti-CD3 system and 104 nm for the NK cell/anti-CD16 system. These results demonstrate that immune receptor triggering can be influenced by the nanoscale spatial organization of receptor/ligand interactions.
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