张晓兵-袁林课题组科研成果|TPQLs荧光染料——用于精确双光子成像

时间: 2023-10-20
作者: 百灵威
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张晓兵-袁林课题组科研成果|TPQLs荧光染料——用于精确双光子成像-百灵威

湖南大学张晓兵-袁林课题组开发的TPQL-1和TPQL-2荧光染料,是在6-乙基-2-二甲氨基萘(acedan)结构上通过单原子取代和电子受体结合的策略开发的新双光子染料(图1)。[1]

图1 TPQLs荧光染料 <sup>[1]</sup>
图1 TPQLs荧光染料 [1]

双光子荧光染料成像由于更深的组织穿透力(高至1,000μm)和更小的组织吸收,同时可以很好的抑制样品成像过程中的光损伤,光漂白以及自发背景荧光,近年来广泛用于生物系统中生物分子的成像和检测。[2]

相较于acedan和其他传统的双光子荧光染料,TPQLs系列双光子染料具有:

  • 高荧光量子产率、良好的溶剂不敏感特性:降低成像中由于环境变化引起的假信号,提高成像信背比。
  • 用于准确检测复杂生物成像环境中的生物分析物

这些染料可很好地用于双光子荧光探针的开发和生物分析物的检测,如:基于TPQL-1叠氮取代开发的硫化氢探针(TPQL-N3)和氨基肽酶探针(TPQL-APN)在用于肝脏发育和生长过程中硫化氢和氨基肽酶的动态监测(图2)。

图2  TPQL probes for accurate liver-development imaging (A and C) Two-photon images of H2S (A) and APN (C) in 2, 4, 6, 8 and 10-dpf zebrafish: the zebrafish were cultivated with TPQL-N3 (10 mM) and TPQL-APN (10 mM) for 1 h at 25C. lex = 810 nm, lem = 500–550 nm. Scale bar, 100 mm. (B and D) Inhibitor experiment of H2S (B) and APN (D). (E–G) Normalized fluorescence intensity of the fluorescence images (A)–(D). Error bar = RSD (n = 5). (H) Co-location experiment: images of 6-dpf transgenic zebrafish preincubated with TPQL-APN for 60 min. (H1) green channel for TPQL-APN, lex = 405 nm, lem = 500–550 nm. Scale bar, 100 mm. (H2) red channel for transgenic red fluorescent protein, lex = 560 nm, lem = 570–620 nm. (H3) overlay channel. (H4) local amplification of (H3). Scale bar, 20 mm. (I and J) Western blot analysis showing CBS (I) and APN (J) expression in 2, 4, 6, 8, and 10-dpf zebrafish. The CBS and APN relative abundance was normalized with actin-relative abundance. <sup>[1]</sup>
图2 TPQL probes for accurate liver-development imaging (A and C) Two-photon images of H2S (A) and APN (C) in 2, 4, 6, 8 and 10-dpf zebrafish: the zebrafish were cultivated with TPQL-N3 (10 mM) and TPQL-APN (10 mM) for 1 h at 25C. lex = 810 nm, lem = 500–550 nm. Scale bar, 100 mm. (B and D) Inhibitor experiment of H2S (B) and APN (D). (E–G) Normalized fluorescence intensity of the fluorescence images (A)–(D). Error bar = RSD (n = 5). (H) Co-location experiment: images of 6-dpf transgenic zebrafish preincubated with TPQL-APN for 60 min. (H1) green channel for TPQL-APN, lex = 405 nm, lem = 500–550 nm. Scale bar, 100 mm. (H2) red channel for transgenic red fluorescent protein, lex = 560 nm, lem = 570–620 nm. (H3) overlay channel. (H4) local amplification of (H3). Scale bar, 20 mm. (I and J) Western blot analysis showing CBS (I) and APN (J) expression in 2, 4, 6, 8, and 10-dpf zebrafish. The CBS and APN relative abundance was normalized with actin-relative abundance. [1]

袁林教授,湖南大学化学化工学院、化学生物传感与计量学国家重点实验室教授、博士生导师。目前已在国际学术期刊上发表论文100余篇,总引用12000余次,h指数为58,其中2012年至今以第一或通讯作者在J. Am. Chem. Soc.(10篇)、 Nat. Commun.(1篇)、 Angew. Chem. Int. Ed.(10篇)、CCS Chem.(1篇)、Chem. Sci.(4篇)、Anal. Chem.(10篇)、Adv. Funct. Mater、Biomaterials等期刊发表论文70余篇。主要从事小分子荧光探针及应用方向的研究。
产品列表

1

品名:
TPQL1, 95%
TPQL1荧光染料
CAS:2766877-57-8
货号:9332553

2

品名:
TPQL2, 95%
TPQL2荧光染料
CAS:2766877-58-9
货号:9332554
参考文献
  1. Xiang Z, Wang Z Y, Ren T B, et al. A general strategy for development of a single benzene fluorophore with full-color-tunable, environmentally insensitive, and two-photon solid-state emission[J]. Chemical Communications, 2019, 55(76): 11462-11465.
  2. 任天兵.高性能双光子/近红外荧光染料和探针的设计,合成及其成像应用研究[D].湖南大学.
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