Mar. Drugs 2011, 9(1), 139-153; doi:10.3390/md9010139
Article

Sulfated Polysaccharides in Marine Sponges: Extraction Methods and Anti-HIV Activity

Received: 6 December 2010; in revised form: 9 January 2011 / Accepted: 20 January 2011 / Published: 24 January 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The extraction, fractionation and HIV-1 inhibition potential of polysaccharides extracted from three species of marine sponges, Erylus discophorus, Cliona celata and Stelletta sp., collected in the Northeastern Atlantic, is presented in this work. The anti-HIV activity of 23 polysaccharide pellets and three crude extracts was tested. Crude extracts prepared from Erylus discophorus specimens were all highly active against HIV-1 (90 to 95% inhibition). Cliona celata pellets showed low polysaccharide content (bellow 38.5%) and almost no anti-HIV activity (<10% inhibition). Stelletta sp. pellets, although quite rich in polysaccharide (up to 97.3%), showed only modest bioactivity (<36% HIV-1 inhibition). Erylus discophorus pellets were among the richest in terms of polysaccharide content (up to 98%) and the most active against HIV-1 (up to 95% inhibition). Chromatographic fractionation of the polysaccharide pellet obtained from a specimen of Erylus discophorus (B161) yielded only modestly active fractions. However, we could infer that the active molecule is most probably a high molecular weight sulfated polysaccharide (>2000 kDa), whose mechanism is possibly preventing viral attachment and entry (fusion inhibitor).
Keywords: porifera; Erylus discophorus; polysaccharides; anti-HIV activity
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MDPI and ACS Style

Esteves, A.I.S.; Nicolai, M.; Humanes, M.; Goncalves, J. Sulfated Polysaccharides in Marine Sponges: Extraction Methods and Anti-HIV Activity. Mar. Drugs 2011, 9, 139-153.

AMA Style

Esteves AIS, Nicolai M, Humanes M, Goncalves J. Sulfated Polysaccharides in Marine Sponges: Extraction Methods and Anti-HIV Activity. Marine Drugs. 2011; 9(1):139-153.

Chicago/Turabian Style

Esteves, Ana I. S.; Nicolai, Marisa; Humanes, Madalena; Goncalves, Joao. 2011. "Sulfated Polysaccharides in Marine Sponges: Extraction Methods and Anti-HIV Activity." Mar. Drugs 9, no. 1: 139-153.

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