Fiscalin Derivatives as Potential Neuroprotective Agents

Area of Science:

• Marine biotechnology
• Neuroscience
• Pharmacology

Background:

• Neurodegenerative diseases (ND) share common pathogenic mechanisms.
• Marine-derived compounds offer potential therapeutic strategies.
• Fiscalins are marine compounds with potential neuroprotective properties.

Purpose of the Study:

• To evaluate the neuroprotective effects of fiscalin derivatives against MPP+ and iron(III)-induced cytotoxicity in an in vitro model of ND (SH-SY5Y cells).
• To assess the impact of fiscalin derivatives on P-glycoprotein (P-gp) activity, a key efflux pump for neurotoxins.

Main Methods:

• Differentiated SH-SY5Y cells were exposed to MPP+ or iron(III) and 18 fiscalin derivatives at non-cytotoxic concentrations.
• Cytotoxicity was evaluated at 24 and 48 hours post-exposure.
• P-gp transport activity was measured to assess inhibition or activation.

Main Results:

• Fiscalins 1a and 1b demonstrated significant protection against MPP+-induced cytotoxicity.
• Fiscalins 1b, 2b, 4, and 5 showed protective effects against iron(III)-induced cytotoxicity.
• Fiscalins 4 and 5 inhibited P-gp activity, while others (1c, 2a, 2b, 6, 11) modestly increased it.

Conclusions:

• Fiscalin derivatives exhibit promising neuroprotective effects against key neurodegenerative disease stressors.
• These compounds modulate P-gp activity, suggesting potential as P-gp inhibitors or activators.
• Fiscalins represent a valuable source for developing novel therapeutic agents for neurodegenerative diseases.