Cytotoxic activity of some marine brown algae against cancer cell lines

Abstract

The aim of this study was to investigate the in vitro cytotoxic activity of total extract of MeOH (70%) and partition fractions of hexan, chloroform (CHCL 3) , ethylacetate (EtOAc) and MeOH-H 2 O of brown algae species (Sargassum swartzii, Cystoseira myrica, Colpomenia sinuosa) found in the Persian Gulf against in different cell lines including HT-29, Caco-2, T47D, MDA-MB468 and NIH 3T3 cell lines by MTT and AnnexinV-PI assay. The hexan fraction of S. swartzii and C. myrica showed selective cytotoxicity against proliferation of Caco-2 cells (IC 50 <100 μg/ml) T47D cell line (IC 50 <100 μg/ml), respectively. S. swartzii and C. myrica were also observed for increasing apoptosis in Caco-2 and T47D cells. Total extract and fractions of C. sinuosa did not show any significant cytotoxicity against the studied cell lines. MDA-MB468 cells were more sensitive to C. myrica than was T47D (IC 50 99.9±8.11 vs. 56.50'± 0.88). This reflects an estrogen receptor independent mechanism for cytotoxicity of the extract. The IC 50 of the hexan fraction of C. myrica on T47D parent cells was lower than it was on T47D-TR cells (IC 50 99.9±8.11 vs. 143.15 ± 7.80). This finding suggests a role for the MDR-1 in the development of possible future tolerance to the extract.

Biological potential of marine macroalgae of the genusCystoseira

“…For instance, C. tamariscifolia extract exhibited strong cytotoxic activity against Daudi, Jurkat and K562 tumor cell lines [30]. The hexane fraction of the methanolic extract from C. myrica (S.G.Gmelin) C. Agardh showed an interesting activity against T47D (breast carcinoma) (IC 50 = 99.9 μg/mL) and mainly against MDA-MB468 (breast carcinoma estrogen receptor independent (IC 50 = 56.5 μg/mL) [11]. Also, the dichloromethane extract of fresh C. abiesmarina displayed selective and antiproliferative activity against HeLa cell line, induced by apoptosis (IC 50 = 8.8 μg/ mL) [2].…”

Cytotoxicity and antimicrobial activity of marine macro algae (Dictyotaceae and Ulvaceae) from the Persian Gulf

“…Also, three algae extracts, have demonstrated cytotoxic activity, from the crude extracts of 21 brown algae collected from the south coast of England and the West coast of Ireland (Spavieri et al 2010). The methanol extract of Sargassum swartzii collected from the Persian Gulf showed cytotoxic effect against T-47D cells (IC 50 \ 100 lg/ml) (Khanavi et al 2010). The study of Burt (2004), has shown that minor components play a role in the antibacterial activity, possibly by producing synergistic effects with other components.…”

Emerging Novel Anti HIV biomolecules from marine Algae: An overview

“…The various biological properties exhibited by brown algae include immune modulation (Raghavendran et al, 2011); anti-inflammation (Islam et al, 2013); antiviral (Sinha et al, 2010); antioxidative (Balboa et al, 2013);vasodilation (Park et al, 2008); anticoagulant (Arivulsevan et al, 2011); antitumor (Khanavi et al, 2010); anti-vasculogenic (Dias et al 2008); antiherpetic (Lee et al, 2010) anti lipidemic (Guangling Jiao et al, 2011), and hepato-protection (Josephine et al, 2008). Brown algae have potential for therapeutic application because they are taxonomically diverse, largely productive, biologically active and chemically unique, thus offering a great scope for discovery of drugs from the ocean.…”