RT Journal Article T1 Exploring Marine-Derived Polysaccharides Through In Vitro and Zebrafish In Vivo Assays: Initial Trends of A Novel Approach to Drug Screening A1 Latorre-Redoli, Sofía A1 Valverde-Guillén, Piedad A1 García-Márquez, Jorge A1 López-Figueroa, Félix A1 Abdala-Díaz, Roberto Teófilo A1 Mari-Beffa, Manuel K1 Acuicultura K1 Polisacáridos K1 Peces cebra AB The sulfated polysaccharides derived from marine species have attracted attention for their nutraceutical and pharmaceutical potential. Initially examined in cell culture, many labs have further tested their activity in in vivo rodent assays. Zebrafish embryos have been recently proposed as an alternative model species to test anti-inflammatory, fungicidal, immunomodulatory, antioxidant, antitumor or toxicity effects with significant success. In this article, we systematically review by PRISMA strategy the assays that use zebrafish to evaluate potential nutraceutical and pharmaceutical applications of polysaccharides from more than 30 marine algal species. Effects against cancer, inflammation and oxidative stress or over regeneration capacity, immunomodulation, and photoprotection in zebrafish are here compared. From this review, some polysaccharides appear as safe antitumor compounds (e.g., neutral S. skottsbergii-derived fraction over G-361 melanoma) while others show significant toxicity to embryos. The current bibliography shows a clear trend to use in parallel zebrafish larvae and in vitro assays to test the effects of polysaccharide fractions recovered from a variety of bioprocess from different marine algae-derived biomass. Its potential application in the pharmacology and nutraceutical industry is discussed. PB Springer Nature YR 2025 FD 2025-11-24 LK https://hdl.handle.net/10630/40924 UL https://hdl.handle.net/10630/40924 LA eng NO Latorre-Redoli, S., Valverde-Guillén, P., García-Márquez, J., Figueroa, F.L., Abdala-Díaz, R., Marí Beffa, M. (2025) Exploring Marine-Derived Polysaccharides Through In Vitro and Zebrafish In Vivo Assays: Initial Trends of A Novel Approach to Drug Screening. Marine Biotechnology (en prensa) NO https://openpolicyfinder.jisc.ac.uk/id/publication/16140 NO NextGenerationEU NO Junta de Andalucía DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026