Prasterone is an endogenous steroid hormone. Prasterone acts as an agonist at ERβ, NMDA, and σ1 receptors, a partial agonist at ERα and AR, and antagonist at GABA-A receptors. It displays a variety of biologocial activities, including enhancing working me
19-O-Acetylchaetoglobosin A is a fungal metabolite originally isolated fromC. globosumthat has actin polymerization inhibitory and cytotoxic activities.1,2It inhibits actin polymerization in a cell-free assay when used at a concentration of 2 μM.219-O-Acetylchaetoglobosin A (3.2, 10, and 32 μg ml) is cytotoxic to HeLa cervicalcancer cells.1 1.Umeda, M., Ohtsubo, K., Saito, M., et al.Cytotoxicity of new cytochalasans from Chaetomium globosumExperientia31(4)435-438(1975) 2.Sekita, S., Yoshihira, K., Natori, S., et al.Structure-activity relationship of thirty-nine cytochalasans observed in the effects on cellular structures and cellular events and on actin polymerization in vitroJ. Pharmacobiodyn.8(11)906-916(1985)
Collismycin A is a bacterial metabolite originally isolated from Streptomyces that has diverse biological activities, including antibacterial, antiproliferative, and neuroprotective properties. It is active against a variety of bacteria (MICs = 6.25 and 100 μg ml) and fungi (MICs = 12.5-100 μg ml). It inhibits proliferation of A549 lung, HCT116 colon, and HeLa cervicalcancer cells (IC50s = 0.3, 0.6, and 0.3 μM, respectively) and NIH373 fibroblasts (IC50 = 56.6 μM) but not MDA-MD-231 breast cancer cells (IC50 = >100 μM). Collismycin A forms a complex with Fe(II) and Fe(III) at a 2:1 ratio, and the addition of iron ions inhibits the antiproliferative effect of collismycin A on HeLa cells, an effect that does not occur with the addition of zinc, manganese, copper, or magnesium ions. Collismycin A (1 μM) prevents apoptosis in the brain region of zebrafish larvae by 44% in a model of neuronal cell death induced by all-trans retinoic acid .
3-Hydroxyterphenyllin is a p-terphenyl fungal metabolite originally isolated from A. candidus that has diverse biological activities, including antioxidant, antiproliferative, antibacterial, and antiviral properties.1,2,3,4 It has a 96% scavenging effect on 2,2-diphenyl-1-picrylhydrazyl radicals when used at a concentration of 100 μg/ml.2 3-Hydroxyterphenyllin inhibits the growth of HeLa cervical, A549 lung, and HepG2 liver cancer cells (IC50s = 23, 36, and 32 μM, respectively), as well as methicillin-resistant S. aureus (MRSA) and V. vulnificus bacteria (MIC = 31 μg/ml for both).3 It also inhibits HIV-1 integrase in both coupled and strand transfer assays (IC50s = 2.8 and 12.1 μM, respectively).4References1. Kurobane, I., Vining, L.C., McInnes, A.G., et al. 3-Hydroxyterphenyllin, a new metabolite of Aspergillus candidus. Structure elucidation by 1H and 13C nuclear magnetic resonance spectroscopy. J. Antibiot. (Tokyo) 32(6), 559-564 (1979).2. Yen, G.-C., Chang, Y.-C., Sheu, F., et al. Isolation and characterization of antioxidant compounds from Aspergillus candidus broth filtrate. J. Agric. Food Chem. 49(3), 1426-1431 (2001).3. Wang, W., Liao, Y., Tang, C., et al. Cytotoxic and antibacterial compounds from the coral-derived fungus Aspergillus tritici SP2-8-1. Mar. Drugs 15(11), E348 (2017).4. Singh, S.B., Jayasuriya, H., Dewey, R., et al. Isolation, structure, and HIV-1-integrase inhibitory activity of structurally diverse fungal metabolites. J. Ind. Microbiol. Biotechnol. 30(12), 721-731 (2003). 3-Hydroxyterphenyllin is a p-terphenyl fungal metabolite originally isolated from A. candidus that has diverse biological activities, including antioxidant, antiproliferative, antibacterial, and antiviral properties.1,2,3,4 It has a 96% scavenging effect on 2,2-diphenyl-1-picrylhydrazyl radicals when used at a concentration of 100 μg/ml.2 3-Hydroxyterphenyllin inhibits the growth of HeLa cervical, A549 lung, and HepG2 liver cancer cells (IC50s = 23, 36, and 32 μM, respectively), as well as methicillin-resistant S. aureus (MRSA) and V. vulnificus bacteria (MIC = 31 μg/ml for both).3 It also inhibits HIV-1 integrase in both coupled and strand transfer assays (IC50s = 2.8 and 12.1 μM, respectively).4 References1. Kurobane, I., Vining, L.C., McInnes, A.G., et al. 3-Hydroxyterphenyllin, a new metabolite of Aspergillus candidus. Structure elucidation by 1H and 13C nuclear magnetic resonance spectroscopy. J. Antibiot. (Tokyo) 32(6), 559-564 (1979).2. Yen, G.-C., Chang, Y.-C., Sheu, F., et al. Isolation and characterization of antioxidant compounds from Aspergillus candidus broth filtrate. J. Agric. Food Chem. 49(3), 1426-1431 (2001).3. Wang, W., Liao, Y., Tang, C., et al. Cytotoxic and antibacterial compounds from the coral-derived fungus Aspergillus tritici SP2-8-1. Mar. Drugs 15(11), E348 (2017).4. Singh, S.B., Jayasuriya, H., Dewey, R., et al. Isolation, structure, and HIV-1-integrase inhibitory activity of structurally diverse fungal metabolites. J. Ind. Microbiol. Biotechnol. 30(12), 721-731 (2003).