Surface plasmon resonance-based detection of ladder-shaped polyethers by inhibition detection method.

Abstract

Ladder-shaped polyether (LSP) compounds represented by brevetoxins and ciguatoxins were largely discovered in association with seafood poisoning. Thus, a quick quantification method for LSPs is potentially important. We examined a surface plasmon resonance method using desulfated-yessotoxin (dsYTX) immobilized on a sensor chip and phosphodiesterase PDEII in a inhibition detection mode. Yessotoxin, brevetoxin B and synthetic LSP derivatives showed clear inhibition against PDEII binding to the immobilized dsYTX, by which their half inhibitory concentrations were successfully estimated. This inhibition method appeared to be superior in specificity to direct binding assays where binding proteins to LSP was immobilized on a sensor chip.

• Authors: Ryota Mouri, Tohru Oishi, Kohei Torikai, Satoru Ujihara, Nobuaki Matsumori, Michio Murata, Yasukatsu Oshima
• Journal: Bioorganic & medicinal chemistry letters (Bioorg Med Chem Lett) Vol. 19 Issue 10 Pg. 2824-8 (May 15 2009) ISSN: 1464-3405 [Electronic] England
• PMID: 19361990 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Ethers
• Marine Toxins
• Mollusk Venoms
• Oxocins
• Ciguatoxins
• brevetoxin
• Cyclic Nucleotide Phosphodiesterases, Type 2
• yessotoxin

Topics

• Biotinylation
• Ciguatoxins (analysis, chemistry)
• Cyclic Nucleotide Phosphodiesterases, Type 2 (antagonists & inhibitors, metabolism)
• Ethers (analysis, chemistry)
• Marine Toxins (analysis, chemistry)
• Mollusk Venoms
• Oxocins (analysis, chemistry)
• Surface Plasmon Resonance (methods)