Photostable fluorescent organic dots with aggregation-induced emission (AIE dots) for noninvasive long-term cell tracing.

Photostable fluorescent organic dots with aggregation-induced emission (AIE dots) for noninvasive long-term cell tracing.
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DOI:
10.1038/srep01150
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Tang, Ben Zhong
Tang, Ben Zhong
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li, Kai;Qin, Wei;Ding, Dan;Tomczak, Nikodem;Geng, Junlong;Liu, Rongrong;Liu, Jianzhao;Zhang, Xinhai;Liu, Hongwei;Liu, Bin;Tang, Ben Zhong

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利用荧光探针进行长期无创细胞示踪在生命科学和生物医学工程中具有重要意义。例如,要了解癌细胞的发生、发展、侵袭和转移,以及监测干细胞移植后的组织再生,需要使用细胞兼容的荧光探针在很长一段时间内持续追踪生物学过程。在这项工作中,我们成功地开发了具有聚集诱导发射的有机远红/近红外点(AIE点),并展示了它们作为长期细胞跟踪器的应用。由反式转录激活子蛋白衍生的细胞穿透性多肽功能化的AIE点具有高发射效率、大吸光度、良好的生物相容性和较强的光漂白能力,确保了出色的长期无创体外和体内细胞示踪。有机AIE点的性能优于无机量子点,为后续生物过程(如致癌)的荧光探针开发开辟了一条新的途径。
Long-term noninvasive cell tracing by fluorescent probes is of great importance to life science and biomedical engineering. For example, understanding genesis, development, invasion and metastasis of cancerous cells and monitoring tissue regeneration after stem cell transplantation require continual tracing of the biological processes by cytocompatible fluorescent probes over a long period of time. In this work, we successfully developed organic far-red/near-infrared dots with aggregation-induced emission (AIE dots) and demonstrated their utilities as long-term cell trackers. The high emission efficiency, large absorptivity, excellent biocompatibility, and strong photobleaching resistance of the AIE dots functionalized by cell penetrating peptides derived from transactivator of transcription proteins ensured outstanding long-term noninvasive in vitro and in vivo cell tracing. The organic AIE dots outperform their counterparts of inorganic quantum dots, opening a new avenue in the development of fluorescent probes for following biological processes such as carcinogenesis.
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