SSBD:database

Detail of LAMP1-ONL

Akira Takai, Masahiro Nakano, Kenta Saito, Remi Haruno, Tomonobu M Watanabe, Tatsuya Ohyanagi, Takashi Jin, Yasushi Okada, Takeharu Nagai (2015) Expanded palette of Nano-lanterns for real-time multicolor luminescence imaging., Proceedings of the National Academy of Sciences of the United States of America, Volume 112, Number 14, pp. 4352-6

Published in 2015 Apr 7 (Electronic publication in March 23, 2015, midnight )

• doi: 10.1073/pnas.1418468112
• pmid: 25831507
  

(Abstract) Fluorescence live imaging has become an essential methodology in modern cell biology. However, fluorescence requires excitation light, which can sometimes cause potential problems, such as autofluorescence, phototoxicity, and photobleaching. Furthermore, combined with recent optogenetic tools, the light illumination can trigger their unintended activation. Because luminescence imaging does not require excitation light, it is a good candidate as an alternative imaging modality to circumvent these problems. The application of luminescence imaging, however, has been limited by the two drawbacks of existing luminescent protein probes, such as luciferases: namely, low brightness and poor color variants. Here, we report the development of bright cyan and orange luminescent proteins by extending our previous development of the bright yellowish-green luminescent protein Nano-lantern. The color change and the enhancement of brightness were both achieved by bioluminescence resonance energy transfer (BRET) from enhanced Renilla luciferase to a fluorescent protein. The brightness of these cyan and orange Nano-lanterns was approximately 20 times brighter than wild-type Renilla luciferase, which allowed us to perform multicolor live imaging of intracellular submicron structures. The rapid dynamics of endosomes and peroxisomes were visualized at around 1-s temporal resolution, and the slow dynamics of focal adhesions were continuously imaged for longer than a few hours without photobleaching or photodamage. In addition, we extended the application of these multicolor Nano-lanterns to simultaneous monitoring of multiple gene expression or Ca(2+) dynamics in different cellular compartments in a single cell.

• Animals
• Calcium/metabolism
• Cell Line
• DNA/chemistry
• Dogs
• Embryonic Stem Cells/cytology
• Endosomes/metabolism
• Fluorescence Resonance Energy Transfer
• Focal Adhesions
• Gene Expression Regulation
• Luciferases/chemistry[major]
• Luciferases, Renilla/metabolism
• Luminescence[major]
• Luminescent Proteins/chemistry[major]
• Mice
• Molecular Sequence Data
• Oligonucleotides/chemistry
• Peroxisomes/metabolism
• Promoter Regions, Genetic
• Recombinant Fusion Proteins/chemistry[major]
• Renilla
• Vinculin/chemistry