Aszonapyrone A is a meroditerpene fungal metabolite that has been found in Neosartorya and has diverse biological activities.1,2,3 It inhibits the growth of MCF-7, NCIH460, and A375-C5 cancer cells (GI50s = 13.6, 11.6, and 10.2 μM, respectively).1 Aszonapyrone A is active against multidrug-resistant isolates of S. aureus, E. faecalis, and E. faecium (MICs = 8, 16, and 16 μg/ml, respectively) and inhibits S. aureus biofilm formation.2 It is also active against P. falciparum in vitro (IC50 = 1.34 μg/ml).3
(S)-α-Methylbenzyl ricinoleamide is a fatty acid amide derived from ricinoleic acid and methyl benzylamine. It demonstrates potent growth inhibition of glioma (U251), breast (MCF-7), ovarian (NCI-ADR/RES and OVCAR-3), kidney (786-0), non-small cell lung (NCI-H460), and prostate (PC-3) cancer cells with a mean GI50 value of 6.9 μM.
Malformin A is a cyclopentapeptide fungal metabolite that has been found in A. niger and has diverse biological activities. It is a plant growth regulator that induces malformations in plant structure. Malformin A inhibits replication of tobacco mosaic virus (TMV) in local lesion and leaf-disc assays (IC50s = 19.7 and 45.4 μg/ml, respectively). It is cytotoxic to NCI-H460, MIA PaCa-2, MCF-7, SF-268, and WI-38 cancer cells (IC50s = 70, 50, 100, 70, and 100 nM, respectively), inhibits proliferation of PC3 and LNCaP cells (IC50s = 130 and 90 nM, respectively), and induces apoptosis and necrosis in PC3 and LNCaP cells. Malformin A also increases the accumulation of reactive oxygen species, decreases the mitochondrial membrane potential, and induces autophagy in PC3 and LNCaP cells. It is toxic to mice when administered intraperitoneally (LD50 = 3.1 mg/kg) but not orally up to doses of 50 mg/kg.
Previridicatumtoxin is a fungal metabolite that has been found inP. aethiopicumand has diverse biological activities.1,2It is an intermediate in the biosynthesis of the mycotoxin viridicatumtoxin . Previridicatumtoxin is active against methicillin-resistantS. aureus(MRSA) and vancomycin-resistantE. faecalis(IC50s = 4.4 and 4.8 μM, respectively), as well asC. albicansandS. cerevisiae(MIC = 32 μg ml for both).2,1It is cytotoxic to NCIH460, KB-3-1, and SW620 cancer cells (IC50s = 5.3, 4.1, and 6 μM, respectively).2 1.Chooi, Y.H., Wang, P., Fang, J., et al.Discovery and characterization of a group of fungal polycyclic polyketide prenyltransferasesJ. Am. Chem. Soc.134(22)9428-9437(2012) 2.Shang, Z., Salim, A.A., Khalil, Z., et al.Viridicatumtoxins: Expanding on a rare tetracycline antibiotic scaffoldJ. Org. Chem.80(24)12501-12508(2015)
Amycolatopsin A is a macrolide polyketide originally isolated fromAmycolatopsisthat has antimycobacterial and anticancer activities.1It is active againstM. bovisandM. tuberculosis(IC50s = 0.4 and 4.4 μM, respectively) but notB. subtilis,S. aureus,E. coli, orP. aeruginosa(IC50s = >30 μM for all). Amycolatopsin A is cytotoxic to SW620 colorectal and NCIH460 lung cancer cells (IC50s = 0.08 and 1.2 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)
Amycolatopsin B is a bacterial metabolite originally isolated fromAmycolatopsisthat has anticancer activity.1It is cytotoxic to NCIH460 lung and SW620 colon cancer cells (IC50s = 0.28 and 0.14 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)
Amycolatopsin C is a polyketide macrolide originally isolated fromAmycolatopsisthat has antimycobacterial and anticancer activities.1It is active againstM. bovisandM. tuberculosis(IC50s = 2.7 and 5.7 μM, respectively) but notB. subtilis,S. aureus,E. coli, orP. aeruginosa(IC50s = >30 μM for all). Amycolatopsin C is cytotoxic to SW620 colorectal and NCIH460 lung cancer cells (IC50s = 10 and 5.9 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)
ATR-IN-4, a potent inhibitor of ATR (Ataxia telangiectasia mutated gene Rad 3-associated kinase), restricts the growth of DU145 prostate cancer cells and NCI-H460 lung cancer cells, with IC 50 values of 130.9 nM and 41.33 nM, respectively.
Microtubule inhibitor 5 (compound 17f) is a highly potent cytotoxic agent that inhibits microtubule function. It exhibits a substantial cytotoxic effect on NCI-H460 cells, with an IC50 value of 154.5 nM. Moreover, this compound demonstrates excellent cell permeability [1].