PMID- 34562919 OWN - NLM STAT- MEDLINE DCOM- 20211104 LR - 20211104 IS - 2079-6374 (Electronic) IS - 2079-6374 (Linking) VI - 11 IP - 9 DP - 2021 Sep 10 TI - Low-Power Two-Color Stimulated Emission Depletion Microscopy for Live Cell Imaging. LID - 10.3390/bios11090330 [doi] LID - 330 AB - Stimulated emission depletion (STED) microscopy is a typical laser-scanning super-resolution imaging technology, the emergence of which has opened a new research window for studying the dynamic processes of live biological samples on a nanometer scale. According to the characteristics of STED, a high depletion power is required to obtain a high resolution. However, a high laser power can induce severe phototoxicity and photobleaching, which limits the applications for live cell imaging, especially in two-color STED super-resolution imaging. Therefore, we developed a low-power two-color STED super-resolution microscope with a single supercontinuum white-light laser. Using this system, we achieved low-power two-color super-resolution imaging based on digital enhancement technology. Lateral resolutions of 109 and 78 nm were obtained for mitochondria and microtubules in live cells, respectively, with 0.8 mW depletion power. These results highlight the great potential of the novel digitally enhanced two-color STED microscopy for long-term dynamic imaging of live cells. FAU - Zhang, Jia AU - Zhang J AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Gao, Xinwei AU - Gao X AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Wang, Luwei AU - Wang L AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Guo, Yong AU - Guo Y AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Zhu, Yinru AU - Zhu Y AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Yang, Zhigang AU - Yang Z AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Yan, Wei AU - Yan W AUID- ORCID: 0000-0002-0745-9514 AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. FAU - Qu, Junle AU - Qu J AUID- ORCID: 0000-0001-7833-4711 AD - Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. LA - eng GR - 61620106016, 61835009, 62005171 and 61975127/National Natural Science Foundation of China/ GR - 2017YFA0700500/the National Basic Research Program of China/ PT - Journal Article DEP - 20210910 PL - Switzerland TA - Biosensors (Basel) JT - Biosensors JID - 101609191 RN - 0 (Fluorescent Dyes) SB - IM MH - Fluorescent Dyes MH - Lasers MH - *Microscopy MH - Microscopy, Fluorescence PMC - PMC8468006 OTO - NOTNLM OT - dynamic live cell imaging OT - low power STED OT - stimulated emission depletion OT - super-resolution microscopy COIS- The authors declare that there are no conflict of interest related to this article. EDAT- 2021/09/26 06:00 MHDA- 2021/11/05 06:00 PMCR- 2021/09/10 CRDT- 2021/09/25 20:27 PHST- 2021/08/03 00:00 [received] PHST- 2021/08/27 00:00 [revised] PHST- 2021/09/09 00:00 [accepted] PHST- 2021/09/25 20:27 [entrez] PHST- 2021/09/26 06:00 [pubmed] PHST- 2021/11/05 06:00 [medline] PHST- 2021/09/10 00:00 [pmc-release] AID - bios11090330 [pii] AID - biosensors-11-00330 [pii] AID - 10.3390/bios11090330 [doi] PST - epublish SO - Biosensors (Basel). 2021 Sep 10;11(9):330. doi: 10.3390/bios11090330.