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Pfeuffer B, Geng P, Wagenknecht HA. Two-Factor Fluorogenic Cyanine-Styryl Dyes with Yellow and Red Fluorescence for Bioorthogonal Labelling of DNA. Chembiochem 2024; 25:e202300739. [PMID: 38050918 DOI: 10.1002/cbic.202300739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/29/2023] [Accepted: 12/05/2023] [Indexed: 12/07/2023]
Abstract
An orange- and a red-emitting tetrazine-modified cyanine-styryl dyes were synthesized for bioorthogonal labelling of DNA by means of the Diels-Alder reaction with inverse electron demand. Both dyes use the concept of the "two-factor" fluorogenicity for nucleic acids: (i) The dyes are nucleic-acid sensitive by their non-covalent binding to DNA, and (ii) their covalently attached tetrazine moiety quench the fluorescence. As a result, the reaction with bicyclononyne- and spirohexene-modified DNA is significantly accelerated up to k2 =280,000 M-1 s-1 , and the fluorescence turn-on is enhanced up to 305. Both dyes are cell permeable even in low concentrations and undergo fluorogenic reactions with spirohexene-modified DNA in living HeLa cells. The fluorescence is enhanced in living cells to such an extent that washing procedures before cell imaging are not required. Their large Stokes shifts (up to 0.77 eV) also makes them well suited for imaging because the wavelength ranges for excitation and emission can be best possible separated. Furthermore, the spirohexene-modified nucleosides and DNA extend and improve the toolbox of already existing "clickable" dyes for live cell imaging.
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Affiliation(s)
- Bastian Pfeuffer
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 6, 76131, Karlsruhe, Germany
| | - Philipp Geng
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 6, 76131, Karlsruhe, Germany
| | - Hans-Achim Wagenknecht
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 6, 76131, Karlsruhe, Germany
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Wang X, Song X, Wu J, Dong P, Men X, Zhang X, Yang F, Sun W. Mitochondria-targeting two-photon fluorescent probe for sequential recognition of Cu 2+ and ATP in neurons and zebrafish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123260. [PMID: 37591016 DOI: 10.1016/j.saa.2023.123260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/25/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023]
Abstract
Highly active mitochondria play a significant role in neuron function. Cu2+ and ATP levels in mitochondria regulate neuronal mitochondrial activity. However, mitochondrial activity was often evaluated by mitochondrial membrane potential. Less is known about the dynamics of Cu2+ and ATP in mitochondria. Herein, we developed a two-photon fluorescence probe (MP), which provided a determination of mitochondrial ATP and Cu2+. The fluorescence of MP showed remarkable quenching in the presence of Cu2+ and then gradually recovered in the presence of ATP, which can be used for sequential recognition. MP has high sensitivity to Cu2+ and ATP, with limits of detection (LOD) close to 0.31 nM and 13.6 nM, respectively. Using this useful probe, we monitor the fluctuation of concentrations of Cu2+ and ATP by fluorescence imaging at single neuron and zebrafish.
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Affiliation(s)
- Xuefeng Wang
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China
| | - Xinlei Song
- Maternity & Child Care Center of Dezhou, Dezhou 253000, China
| | - Juanjuan Wu
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China
| | - Pingxuan Dong
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China
| | - Xiaoxia Men
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China
| | - Xiaolei Zhang
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China
| | - Fan Yang
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China; State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Wan Sun
- Shandong Provincial Engineering Research Center of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, Dezhou University, Dezhou 253023, China.
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