Simultaneous spectral illumination of microplates for high-throughput optogenetics and photobiology.
GPCR
action spectra
cyclic mononucleotides
photoactivated nucleotidyl cyclases
rhodopsin
signal transduction
Journal
Biological chemistry
ISSN: 1437-4315
Titre abrégé: Biol Chem
Pays: Germany
ID NLM: 9700112
Informations de publication
Date de publication:
23 Sep 2024
23 Sep 2024
Historique:
received:
06
05
2023
accepted:
03
09
2024
medline:
20
9
2024
pubmed:
20
9
2024
entrez:
20
9
2024
Statut:
aheadofprint
Résumé
The biophysical characterization and engineering of optogenetic tools and photobiological systems has been hampered by the lack of efficient methods for spectral illumination of microplates for high-throughput analysis of action spectra. Current methods to determine action spectra only allow the sequential spectral illumination of individual wells. Here we present the open-source RainbowCap-system, which combines LEDs and optical filters in a standard 96-well microplate format for simultaneous and spectrally defined illumination. The RainbowCap provides equal photon flux for each wavelength, with the output of the LEDs narrowed by optical bandpass filters. We validated the RainbowCap for photoactivatable G protein-coupled receptors (opto-GPCRs) and enzymes for the control of intracellular downstream signaling. The simultaneous, spectrally defined illumination provides minimal interruption during time-series measurements, while resolving 10 nm differences in the action spectra of optogenetic proteins under identical experimental conditions. The RainbowCap is also suitable for studying the spectral dependence of light-regulated gene expression in bacteria, which requires illumination over several hours. In summary, the RainbowCap provides high-throughput spectral illumination of microplates, while its modular, customizable design allows easy adaptation to a wide range of optogenetic and photobiological applications.
Identifiants
pubmed: 39303162
pii: hsz-2023-0205
doi: 10.1515/hsz-2023-0205
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2024 Walter de Gruyter GmbH, Berlin/Boston.
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