Fluorescence Activity-Guided Isolation of Aaptamine Derivatives From the Marine Sponge Aaptos suberitoides and Their Inhibitory Activity Against Transient Receptor Potential Ankyrin 1
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Title
- Fluorescence Activity-Guided Isolation of Aaptamine Derivatives From the Marine Sponge Aaptos suberitoides and Their Inhibitory Activity Against Transient Receptor Potential Ankyrin 1
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Author(s)
- Kim, Su Hyun; Sung, Dan Bi; Hyun, Jung Mi; Song, Myung Jin; Jeong, Kwiwan; Lee, Jong Seok; Lee, Yeon Ju
- KIOST Author(s)
- Sung, Dan Bi(성단비); Lee, Jong Seok(이종석); Lee, Yeon Ju(이연주)
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Alternative Author(s)
- 김수현; 성단비; 이종석; 이연주
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Publication Year
- 2023-12
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Abstract
- Objective: The aim of this research was to isolate and identify the natural products responsible for the biological and fluorescence activity of the extract from the marine sponge Aaptos suberitoides. Methods: Fluorescence activity-guided separation was performed after validation of the inhibitory activity of the extract against human transient receptor potential ankyrin 1 (hTRPA1) and subsequent measurement of its fluorescence activity. Three previously reported marine alkaloids, aaptamine, isoaaptamine, and 9-O-demethylaaptamine, were obtained and identified based on their nuclear magnetic resonance and high-resolution mass spectrometry data. Results: Aaptamine showed emission of the fluorescent light at a wavelength of 485 nm with a quantum yield of 31%. Isoaaptamine and 9-O-demethylaaptamine showed marginal fluorescence activity but promising inhibitory activity against hTRPA1 with IC50 values of 3.1 and 3.9 μM, respectively. Conclusions: This research demonstrates that natural fluorophores can be discovered in living organisms through photoactivity-guided isolation. Aaptamine, isolated as a result, provides an additional 1,6-naphthyridine fluorophore, while isoaaptamine and 9-O-demethylaaptamine suggest a chemical scaffold that could be used to study the function of ion channels.
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ISSN
- 1934-578X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/44902
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DOI
- 10.1177/1934578x231217942
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Bibliographic Citation
- Natural Product Communications, v.18, no.12, 2023
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Publisher
- Natural Product Communications
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Keywords
- alkaloid; aaptamine; activity-guided isolation; fluorescence activity; transient receptor potential ankyrin 1; marine sponge; Aaptos suberitoides
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Type
- Article
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Language
- English
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Document Type
- Article
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