Citation: Jie Chen, Wenjuan Liu, Xiangning Fang, Qinglong Qiao, Zhaochao Xu. BODIPY 493 acts as a bright buffering fluorogenic probe for super-resolution imaging of lipid droplet dynamics[J]. Chinese Chemical Letters, ;2022, 33(12): 5042-5046. doi: 10.1016/j.cclet.2022.03.120 shu

BODIPY 493 acts as a bright buffering fluorogenic probe for super-resolution imaging of lipid droplet dynamics

Jie Chen ^{a, b} ,
Wenjuan Liu ^{a, b} ,
Xiangning Fang ^{a, b} ,
Qinglong Qiao ^a ,
Zhaochao Xu ^{a, *,}

a.
CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
b.
University of Chinese Academy of Sciences, Beijing 100049, China

zcxu@dicp.ac.cn

Received Date: 23 March 2022
Revised Date: 31 March 2022
Accepted Date: 31 March 2022
Available Online: 3 April 2022

Figures(4)

The need for temporal resolution and long-term stability in super-resolution fluorescence imaging has motivated research to improve the photostability of fluorescent probes. Due to the inevitable photobleaching of fluorophores, it is difficult to obtain long-term super-resolution imaging regardless of the self-healing strategy of introducing peroxide scavengers or the strategy of fluorophore structure modification to suppress TICT formation. The buffered fluorogenic probe uses the intact probes in the buffer pool to continuously replace the photobleached ones in the target, which greatly improves the photostability and enables stable dynamic super-resolution imaging for a long time. But the buffering capacity comes at the expense of reducing the number of fluorescent probes in targets, resulting in low staining fluorescence intensity. In this paper, we selected BODIPY 493, a lipid droplet probe with high fluorescence brightness, to explore the dynamic process of lipid droplet staining of this probe in cells. We found that BODIPY 493 only needs very low laser power for lipid droplet imaging due to the high molecular accumulation in lipid droplets and the high brightness, and the spatiotemporal resolution is greatly improved. More importantly, we found that BODIPY 493 also has a certain buffering capacity, which enables BODIPY 493 to be used for super-resolution imaging of lipid droplet dynamics. This work reminds researchers to coordinate the buffering capacity and brightness of fluorogenic probes.
- Lipid droplet,
- Super-resolution imaging,
- Fluorescent probe,
- Brightness,
- Buffering
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