As part of the ongoing efforts to exploit the pharmaceutical potential of domestic cyanobacteria, six strains belonging to the Nostocales order have been isolated from several sampling sites in Hanoi as prerequisite material. The cytotoxic activity evaluation based on the MTT test resulted in four extracts of two strains (HK7 and NK1111) exhibiting the inhibitory activity against HeLa cells, with IC50 values ranging from µg/mL to µg/mL. |