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
Dunlop IE
中科院分区:
材料科学1区
文献类型:
--
作者:
Delcassian D;Depoil D;Rudnicka D;Liu M;Davis DM;Dustin ML;Dunlop IE

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构建生物活性纳米级阵列以连接T细胞(TCR复合物的CD 3组分)和NK细胞(CD 16)上的活化细胞表面受体。这些阵列由具有在25 - 104 nm范围内的受控颗粒间间距的生物功能化金纳米球形成。使用CD 3结合纳米阵列刺激的T细胞中膜定位的磷酸酪氨酸的程度和CD 16结合纳米阵列刺激的NK细胞的细胞接触面积的大小来评估对这些纳米阵列的响应。在这两种情况下,响应强度随着间距的增加而降低,在T细胞/抗CD 3系统中下降到背景水平69 nm,在NK细胞/抗CD 16系统中下降到背景水平104 nm。这些结果表明,免疫受体触发可以受到受体/配体相互作用的纳米级空间组织的影响。
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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