In vitro Anticancer Potentialities of Three Egyptian Cyanobacterial Isolates against Breast Adenocarcinoma and Hepatocellular Carcinoma Cell Lines

Abstract

C YANOBACTERIA represent a promising but not totally explored source of a wide array of secondary metabolites. They also represent a source for the discovery of compounds and drugs. In the present study, three cyanobacterial species, namely, Arthrospira platensis MH285264, Leptolyngbya boryana MH155317, and Leptolyngbya sp. MH285263 were tested for their anticancer capabilities against hepatocellular carcinoma (Hep-G2) and breast adenocarcinoma (MCF-7) cell lines. In order to obtain the highest biomasses of the tested organisms, they were optimized using 8 media recipes. The optimized organisms were tested for their biochemical constituents. The GC-MS of the tested cyanobacterial extracts revealed the presence of a number of bioactive metabolites which were previously known for their anticancer activity. The extracts of A. platensis and L. sp. showed a cytotoxic effect against the Hep-G2 cell line with IC 50 values of 14 and 15μg.mL −1 , respectively. The extracts of A. platensis and L. sp. showed more cytotoxic effects against the MCF-7 cell line with IC 50 values of 12.1 and 13.2µg.mL −1 , respectively. On the basis of the undiluted concentration used in this study (100μg.mL −1 ), the maximum inhibitory percentages compared with the control against the Hep-G2 and MCF-7 cell lines were 73.2% and 91.2%, respectively, by extracts of L. sp. and A. platensis. L. boryana exhibited a low and neglectable anticancer activity against both cell lines. The obtained promising results herald the existence of natural and safe alternatives with a high efficiency extracted from A. platensis and L. sp. for inclusion in the strategies of cancer treatment.

Comprehensive antifungal investigation of green synthesized silver nanoformulation against four agriculturally significant fungi and its cytotoxic applications

“…The EC 50 (half maximal effective concentration of the silver nanoformulation required to obtain a 50% antifungal activity against phytopathogenic fungi) and IC 50 (half minimal inhibitory concentration of the silver nanoformulation required for 50% inhibition against cancerous cells in vitro) values were calculated using the Prism program (GraphPad Prism 10 software) through nonlinear regression analysis 73 .…”

Volatile Profiling of Spirulina Food Supplements

“…The presence of diverse ester derivatives has been noted in several cyanobacteria (Leptolyngbya sp., Oscillatoria sp., Nostoc sp.) [81,82], attributed to the reaction of fatty acids and alcohols [80]. Methyl esters of hexadecanoic acid are characterized by a strong oily, fatty, waxy odor [13,81].…”

In vitro Screening of Cytotoxic Activity of the Ink and Nidamental Gland Extracts from the Egyptian Cuttlefish Sepia officinalis (Cephalopoda: Sepioidea) on Cancer Cell Lines

“…Nowadays, cancer is regarded as one of the most common illnesses that endanger human survival in most countries, and there is no known cause for it (Wilson et al, 2004;Houghton et al, 2007). Cancer is an illness marked by unregulated cellular division and the proliferation of aberrant cells into the surrounding tissues (Mofeed et al, 2018;Yousefi et al, 2018). Currently, there are no safe cancer treatments due to their adverse effects, such as nausea, exhaustion, vomiting, and diarrhea.…”