Bioorthogonal Click Chemistry-Based Synthetic Cell Glue.

Bioorthogonal Click Chemistry-Based Synthetic Cell Glue.
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DOI:
10.1002/smll.201502972
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发表时间:
2015-12-22
期刊:
Small (Weinheim an der Bergstrasse, Germany)
影响因子:
--
通讯作者:
Yun SH
Yun SH
中科院分区:
其他
文献类型:
--
作者:
Koo H;Choi M;Kim E;Hahn SK;Weissleder R;Yun SH

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细胞粘附的人工方法可以有效地在体外构建功能性细胞复合物,但目前缺乏体内使用的方法。在这里,我们介绍一种基于生物正交点击化学的化学细胞胶,具有高稳定性和鲁棒性。四嗪 (Tz) 和反式环辛烯 (TCO) 与细胞表面缀合,在水性条件下 10 分钟内在细胞之间形成共价键。胶合的、同质或异质的细胞对在 20 dyn/cm2 的剪切应力下保持活力并稳定附着在微流体通道中。将组装的 Jurkat T 细胞静脉注射到活体小鼠体内后,荧光显微镜显示细胞对在循环中的运输及其渗透到肺组织中。我们的结果证明了化学粘合细胞对在各种应用中的巨大潜力,从递送治疗细胞到研究体内细胞间相互作用。基于生物正交点击化学的细胞胶使合成细胞-细胞粘附具有高稳定性和鲁棒性。四嗪 (Tz) 和反式环辛烯 (TCO) 与细胞表面缀合,在水性条件下 10 分钟内在细胞之间形成共价键。胶合细胞在血流中保持活力并稳定附着。它具有生物医学应用的潜力,从输送治疗细胞到研究体内细胞间相互作用。
Artificial methods of cell adhesion can be effective in building functional cell complexes in vitro, but methods for in vivo use are currently lacking. Here, we introduce a chemical cell glue based on bioorthogonal click chemistry with high stability and robustness. Tetrazine (Tz) and trans-cyclooctene (TCO) conjugated to the cell surface form covalent bonds between cells within 10 min in aqueous conditions. Glued, homogeneous or heterogeneous cell pairs remain viable and stably attached in a microfluidic flow channel at a shear stress of 20 dyn/cm2. Upon intravenous injection of assembled Jurkat T cells into live mice, fluorescence microscopy showed the trafficking of cell pairs in circulation and their infiltration into lung tissues. Our results demonstrate the promising potential of chemically glued cell pairs for various applications ranging from delivering therapeutic cells to studying cell-cell interactions in vivo. Bioorthogonal click chemistry-based cell glue enabled synthethic cell-cell adhesion with high stability and robustness. Tetrazine (Tz) and trans-cyclooctene (TCO) conjugated to the cell surface form covalent bonds between cells within 10 min in aqueous conditions. Glued cells remain viable and stably attached in blood flow. It has potential for biomedical applications ranging from delivering therapeutic cells to studying cell-cell interactions in vivo.
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