Sulfated fucan from marine alga inhibits HeLa cells infection by HTLV-1 free particles: semi-quantitative analysis

Maria T. V. Romanos, Maria J. Andrada-Serpa, Paulo A. S. Mourão, Yocie Yoneshigue-Valentin, Mariana S. Pereira, Norma Santos, Marcia D. Wigg
2011 Revista Brasileira de Farmacognosia  
A sulfated fucan from Laminaria abyssalis marine alga prevented the interaction of HTLV-1 particles, purified from the MT-2 cell line, with HeLa cells. The infection obtained using a concentrated virus suspension was detected only by amplification of the newly synthesized HTLV-1 proviral cDNA by the nestedpolymerase chain reaction (PCR). The sulfated polysaccharide was not toxic to the cells at a concentration of 100 µg/mL and prevented infection by the viral particles when added to the cell
more » ... olayers. The proviral cDNA was only detected when the sulfated polysaccharide was added to the cells three hours post-infection, indicating that the inhibitory activity occurred in the initial stages of virus-cell interaction. Our results demonstrate, for the first time, the ability of a sulfated fucan from marine algae to inhibit virus transmission through free virus particles. Keywords: Human T-cell lymphotropic virus type 1 free particles Laminaria abyssalis marine algae sulfated fucan antiviral activity Sulfated fucan from marine alga inhibits HeLa cells infection by HTLV-1 free particles: semi-quantitative analysis Maria T. V. Romanos et al. Rev. Bras. Farmacogn. Braz. J. Pharmacogn. 21(2):
doi:10.1590/s0102-695x2011005000055 fatcat:nejj2odwnvcz5gttjthzrmln4m