Influence of molecular weight fractionation on the antimicrobial and anticancer properties of a fucoidan rich-extract from the macroalgae Fucus vesiculosus

Eduarda M. Cabral, Julie Rose Mae Mondala, Márcia Oliveira, Joanna Przyborska, Stephen Fitzpatrick, Dilip K. Rai, Saravana Periaswamy Sivagnanam, Marco Garcia-Vaquero, Denis O'Shea, Michael Devereux, Brijesh K. Tiwari, James Curtin

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this study was to investigate the antimicrobial and anticancer properties of a fucoidan extract and subsequent fractions isolated from the macroalgae Fucus vesiculosus. The fractions obtained (>300 kDa, <300 kDa, <100 kDa, <50 kDa and <10 kDa) could inhibit the growth of B. subtilis, E. coli, L. innocua and P. fluorescens when assayed at concentrations between 12,500 and 25,000 ppm. The bacterial growth was monitored by optical density (OD) measurements (600 nm, 24 h) at 30 °C or 37 °C, depending upon on the strain used. The extracted fractions were also tested for cytotoxicity against brain glioblastoma cancer cells using the Alamar Blue assay for 24 h, 48 h and 6 days. The >300 kDa fraction presented the lowest IC50 values (0.052% - 24 h; 0.032% - 6 days). The potential bioactivity of fucoidan as an antimicrobial and anticancer agent was demonstrated in this study. Hence, the related mechanisms of action should be explored in a near future.

Original languageEnglish
Pages (from-to)994-1002
Number of pages9
JournalInternational Journal of Biological Macromolecules
Volume186
DOIs
Publication statusPublished - 1 Sep 2021

Keywords

  • Anticancer properties
  • Antimicrobial properties
  • Brown macroalgae
  • Fucoidan
  • Laminarin
  • Weight fractionation

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