What are the natural sources of trodusquemine?
                                
                                
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                                    5 min read                                
                            
                                Trodusquemine is a naturally occurring aminosterol that has been shown to inhibit protein tyrosine phosphatase 1B (PTP1B), and its natural source is a specific marine organism. Specifically, this intriguing compound was first isolated from the liver extracts of the spiny dogfish shark, *Squalus acanthias*. Its discovery highlights the rich potential of marine life in providing unique bioactive compounds for medical research.