cyanobacteria

β-N-Methylamino-L-alanine hydrochloride (L-BMAA hydrochloride) is a neurotoxin produced by cyanobacteria that may contribute to the development of amyotrophic lateral sclerosis (ALS) and possibly other neurodegenerative diseases.

Scytonemin is a biological pigment synthesized by many strains of cyanobacteria, including Calothrix sp., Lyngbya aestuarii, and others. Scytonemin is also a potent PKL1 inhibitor, which inhibits cell proliferation and arrests cell cycle through downregulating Plk1 activity in many cancel cells. Scytonemin was able to inhibit the proliferation of three myeloma cells in a dose-dependent manner, while U266 was the most sensitive one to scytonemin. Scytonemin , representing a novel Plk1 inhibitor, induced the inhibition of cell growth and cell cycle arrest in multiple myeloma cells by specifically decreasing Plk1 activity.

Microcystin-WR, a hepatotoxic metabolite derived from cyanobacteria, has been demonstrated to induce hepatotoxicity in mice [1].

Argimicin A is an antibiotic isolated from Sphingomonas sp. It exhibits algicidal activity against toxic cyanobacteria, specifically inhibiting M. viridis and M. aeruginosa, with IC50 values of 12 ng mL and 100 ng mL, respectively.

Menominin B is a cyclic peptide identified in freshwater sponge-associated cyanobacteria Nostoc sp., known for its cytotoxic properties. It exhibits antiproliferative activity against the ovarian cancer cell line OVCAR3, with an IC50 of 2.4 μM. Menominin B holds potential for research in the field of anticancer therapies.

Argimicin C is an antibiotic isolated from Sphingomonas sp. It exhibits algicidal activity against various toxic cyanobacteria, with a minimum inhibitory concentration (MIC) at the micromolar level.

Argimicin B is an antibiotic isolated from Sphingomonas sp. It exhibits algicidal activity against various harmful cyanobacteria, with a minimum inhibitory concentration (MIC) at the low micromolar level.