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201
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Branchini BR, Southworth TL, Fontaine DM, Kohrt D, Welcome FS, Florentine CM, Henricks ER, DeBartolo DB, Michelini E, Cevenini L, Roda A, Grossel MJ. Red-emitting chimeric firefly luciferase for in vivo imaging in low ATP cellular environments. Anal Biochem 2017; 534:36-39. [PMID: 28687486 DOI: 10.1016/j.ab.2017.07.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/30/2017] [Accepted: 07/03/2017] [Indexed: 12/12/2022]
Abstract
Beetle luciferases have been adapted for live cell imaging where bioluminescence is dependent on the cellular availability of ATP, O2, and added luciferin. Previous Photinus pyralis red-emitting variants with high Km values for ATP have performed disappointingly in live cells despite having much higher relative specific activities than enzymes like Click Beetle Red (CBR). We engineered a luciferase variant PLR3 having a Km value for ATP similar to CBR and ∼2.6-fold higher specific activity. The red-emitting PLR3 was ∼2.5-fold brighter than CBR in living HEK293T and HeLa cells, an improvement consistent with the importance of the Km value in low ATP environments.
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Affiliation(s)
- Bruce R Branchini
- Department of Chemistry, Connecticut College, New London, CT 06320, USA.
| | - Tara L Southworth
- Department of Chemistry, Connecticut College, New London, CT 06320, USA
| | | | - Dawn Kohrt
- Department of Biology, Connecticut College, New London, CT 06320, USA
| | | | | | - Emma R Henricks
- Department of Chemistry, Connecticut College, New London, CT 06320, USA
| | | | - Elisa Michelini
- Department of Chemistry "G. Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Luca Cevenini
- Department of Chemistry "G. Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Aldo Roda
- Department of Chemistry "G. Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Martha J Grossel
- Department of Biology, Connecticut College, New London, CT 06320, USA
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202
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Chen P, Zheng Z, Zhu Y, Dong Y, Wang F, Liang G. Bioluminescent Turn-On Probe for Sensing Hypochlorite in Vitro and in Tumors. Anal Chem 2017; 89:5693-5696. [PMID: 28485134 DOI: 10.1021/acs.analchem.7b01103] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Hypochlorite (ClO-) is one of the most important reactive oxygen species but using a BL probe for its selective detection (or imaging) still remains challenging. Herein, we report a latent BL probe benzoylhydrazine luciferin (1) for highly selective detection of ClO- in vitro and imaging ClO- in living cells and tumors. In vitro tests indicated that 1 could be applied for highly selective detection of ClO- within the range of 0-62.5 μM with a limit of detection of 0.705 μM. Using these unique features of 1, we successfully applied it to image ClO- in living cells and tumors. We envision that probe 1 might be applied to elucidate the biological roles of ClO- in wider physiological and pathological processes in the near future.
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Affiliation(s)
- Peiyao Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Zhen Zheng
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yunxia Zhu
- Analysis Center, Nanjing Medical University , Nanjing, Jiangsu 210093, China
| | - Yu Dong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Fuqiang Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China.,Analysis Center, Nanjing Medical University , Nanjing, Jiangsu 210093, China
| | - Gaolin Liang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
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203
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Yuan M, Ma X, Jiang T, Gao Y, Cui Y, Zhang C, Yang X, Huang Y, Du L, Yampolsky I, Li M. Prolonged bioluminescence imaging in living cells and mice using novel pro-substrates forRenillaluciferase. Org Biomol Chem 2017; 15:10238-10244. [DOI: 10.1039/c7ob01656e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The prodrug or caged-luciferin strategy affords an excellent platform for persistent bioluminescence imaging.
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204
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Zheng Z, Li G, Wu C, Zhang M, Zhao Y, Liang G. Intracellular synthesis of d-aminoluciferin for bioluminescence generation. Chem Commun (Camb) 2017; 53:3567-3570. [DOI: 10.1039/c7cc00999b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemically stable precursors were employed to intracellularly synthesize d-aminoluciferin for bioluminescence generation.
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Affiliation(s)
- Zhen Zheng
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Gongyu Li
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Chengfan Wu
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Miaomiao Zhang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Yue Zhao
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Gaolin Liang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
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205
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Pinto da Silva L, Magalhães CM, Crista DMA, Esteves da Silva JCG. Theoretical modulation of singlet/triplet chemiexcitation of chemiluminescent imidazopyrazinone dioxetanone via C8-substitution. Photochem Photobiol Sci 2017; 16:897-907. [PMID: 28430271 DOI: 10.1039/c7pp00012j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
DFT analysis of the thermolysis of C8-substituted imidazopyrazinone dioxetanone allows the rational tuning of the activation barrier and singlet/triplet chemiexcitation.
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Affiliation(s)
- L. Pinto da Silva
- Chemistry Research Unit (CIQUP)
- Department of Chemistry and Biochemistry
- Faculty of Sciences of University of Porto
- 4169-007 Porto
- Portugal
| | - C. M. Magalhães
- Chemistry Research Unit (CIQUP)
- Department of Chemistry and Biochemistry
- Faculty of Sciences of University of Porto
- 4169-007 Porto
- Portugal
| | - D. M. A. Crista
- Chemistry Research Unit (CIQUP)
- Department of Chemistry and Biochemistry
- Faculty of Sciences of University of Porto
- 4169-007 Porto
- Portugal
| | - J. C. G. Esteves da Silva
- Chemistry Research Unit (CIQUP)
- Department of Chemistry and Biochemistry
- Faculty of Sciences of University of Porto
- 4169-007 Porto
- Portugal
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