b-nm

β-nicotinamide mononucleotide (NMN) is a natural nucleotide and a key intermediate in the synthesis of coenzyme I (NAD+). β-nicotinamide mononucleotide is involved in a number of biochemical reactions in the human body, which are related to immunity and metabolism.

Tetrahydroharmine (Leptaflorine) is a natural product found in the stems and large branches of Banisteriopsis caapi cultivar Da Vine. Tetrahydroharmine is a Monoamine oxidase A inhibitor.

Harmane (Loturine) is a bio-active β-Carboline and monoamine oxidase inhibitor found in coffee and tobacco smoke.

Cytosporone B (Dothiorelone G) is a naturally occurring agonist of the nuclear orphan receptor Nur77 NR4A1 (EC50=0.278 nM).

25-Hydroxycholesterol is a steroid derivative that suppresses the cleavage of sterol regulatory element binding proteins (SREBPs). It inhibits HMG-CoA reductase and so it also plays a significant role in the in vivo regulation of cholesterol biosynthesis

Hygrolidin is a macrocyclic lactone originally isolated from S. hygroscopicus. It inhibits proliferation of a variety of cancer cell lines, including DLD-1 colon cancer, LNCaP prostate cancer, and K562 leukemia cells (IC50s = 2.9, 5.2, and 33 ng ml, respectively). Hygrolidin induces the expression and levels of p21 in DLD-1 cells, but not WI-38 fibroblasts, and leads to cell accumulation in the G1 and S phases without inducing apoptosis. It has antiparasitic activity against T. cruzi, L. donovani, and T. b. brucei but also induces cytotoxicity in HepG2 cells (IC50s = 1.1, 72.5, 77, and 24.5 nM, respectively).

Guajadial B acts as a Top1 catalytic inhibitor and delays Top1 poison-mediated DNA damage. Guajadial B shows cytotoxicities against five human cancer cell lines, it is the most effective having an IC50 value of 150 nM toward A549 cells.

B-Phycoerythrin (B-PE) is a light-harvesting phycobiliprotein pigment that can be extracted from the red alga Porphyridium cruentum. The absorption spectrum of B-Phycoerythrin peaks at 545 nm and 563 nm, with a shoulder peak at 498 nm.

Monaspin B, a natural product from the co-culture of Monascus purpureus and Aspergillus oryzae, exhibits anti-proliferative activity by inducing apoptosis in HL-60 cells at an IC50 of 160 nM, demonstrating its antitumor properties [1].

5Z-7-Oxozeaenol (FR148083) is a potent, irreversible and selective inhibitor of transforming growth factor (TGF)-β-activated kinase 1 with IC50 of 8.1 nM for TAK1 and low activity against MEK1 with IC50 of 411 nM, it is also an inhibitor of VEGF-R2 with IC50 of 52 nM.

Aspergillin PZ is a fungal metabolite originally isolated from A. awamori. It induces morphological deformation of P. oryzae conidia when used at a concentration of 89 nM. Aspergillin PZ is active against S. epidermidis (MIC = 20 μM) but not S. aureus, E. coli, or B. cereus (MICs = >20 μM). It is cytotoxic to HL-60 promyelocytic leukemia cells (IC50 = 56.61 μM) but not THP-1 acute monocytic leukemia or PC3 prostate cancer cells (IC50s = >80 μM).

Shishijimicin B, an enediyne class compound, exhibits extremely potent cytotoxicity, with IC50 values ranging from 2.0-3.3 nM. This compound has been noted for its antitumor activity, making it valuable for cancer research [1]. Additionally, Shishijimicin B serves as a click chemistry reagent due to its Alkyne group, allowing for copper-catalyzed azide-alkyne cycloaddition (CuAAc) with Azide-containing molecules.

Aplyronine B, an active compound, exhibits potent antitumor activity and demonstrates cytotoxicity against HeLa-S3 cells, with an IC50 value of 2.9 nM, making it suitable for cancer research [1].

Aspergillimide is a fungal metabolite originally isolated from A. japonicus.1 It reduces nicotinic acetylcholine receptor (nAChR) peak and slowly-desensitizing amplitudes induced by acetylcholine in silkworm (B. mori) larval neurons (IC50s = 20.2 and 39.6 nM, respectively) but has no effect on chicken α3β4-, α4β2-, and α7-containing nAChRs.2 Dietary administration of aspergillimide A (10 μg/g of diet) induces paralysis in silkworm fourth instar larvae.1 Aspergillimide A (10 and 20 mg/kg) reduces T. colubriformis fecal egg count in gerbils.3References1. Hayashi, H., Nishimoto, Y., Akiyama, K., et al. New paralytic alkaloids, asperparalines A, B and C, from Aspergillus japonicus JV-23. Biosci. Biotechnol. Biochem. 64(1), 111-115 (2000).2. Hirata, K., Kataoka, S., Furutani, S., et al. A fungal metabolite asperparaline a strongly and selectively blocks insect nicotinic acetylcholine receptors: The first report on the mode of action. PLoS One 6(4), e18354 (2011).3. Banks, R.M., Blanchflower, S.E., Everett, J.R., et al. Novel anthelmintic metabolites from an Aspergillus species; the aspergillimides. J. Antibiot. (Tokyo) 50(10), 840-846 (1997). Aspergillimide is a fungal metabolite originally isolated from A. japonicus.1 It reduces nicotinic acetylcholine receptor (nAChR) peak and slowly-desensitizing amplitudes induced by acetylcholine in silkworm (B. mori) larval neurons (IC50s = 20.2 and 39.6 nM, respectively) but has no effect on chicken α3β4-, α4β2-, and α7-containing nAChRs.2 Dietary administration of aspergillimide A (10 μg/g of diet) induces paralysis in silkworm fourth instar larvae.1 Aspergillimide A (10 and 20 mg/kg) reduces T. colubriformis fecal egg count in gerbils.3 References1. Hayashi, H., Nishimoto, Y., Akiyama, K., et al. New paralytic alkaloids, asperparalines A, B and C, from Aspergillus japonicus JV-23. Biosci. Biotechnol. Biochem. 64(1), 111-115 (2000).2. Hirata, K., Kataoka, S., Furutani, S., et al. A fungal metabolite asperparaline a strongly and selectively blocks insect nicotinic acetylcholine receptors: The first report on the mode of action. PLoS One 6(4), e18354 (2011).3. Banks, R.M., Blanchflower, S.E., Everett, J.R., et al. Novel anthelmintic metabolites from an Aspergillus species; the aspergillimides. J. Antibiot. (Tokyo) 50(10), 840-846 (1997).

Licochalcone C (LICOCHALCONEC) has potent antioxidant properties and inhibition of bacterial growth and cellular respiration. It has cardioprotection effect, via antioxidant, anti-inflammatory, and anti-apoptotic activities. Licochalcone C exhibit inhibitory activity with cytotoxicity in a rat basophilic leukaemia cell line, RBL-2H3. Licochalcone C induces apoptosis via B-cell lymphoma 2 family proteins in T24 cells, it may be a potential adjuvant therapeutic agent for bladder cancer.

Sphingosine (d14:1) is a bioactive sphingolipid that has been found in B. mori (silkworm), P. clarkii (crayfish), and A. aurita (jellyfish) extracts. It increases the germination rate of N. rileyi, an entomopathogenic fungus, with an EC50 value of 10.2 nM. Sphingosine (d14:1) inhibits protein kinase C (PKC) in vitro (IC50 = 7.3 mol%) as well as superoxide generation induced by phorbol 12-myristate 13-acetate in neutrophils and reduces growth of CHO cells (IC50s = 19 and 8 μM, respectively).

Aphadilactone B shows significant antimalarial activity with the IC50 value of 1350 ± 150 nM.

Cytochalasin B is a mycotoxin binding to the barbed end of actin filaments. It can disrupt the formation of actin polymers (Kd: 1.4-2.2 nM for F-actin).

Brevetoxin B is a polyketide neurotoxin produced by Karenia species and other dinoflagellates. It binds to site 5 on the alpha subunit of voltage-gated sodium channels (IC50 = 15 nM) on neurons at the neuromuscular junction, causing the channel to open irreversibly at potentials more negative than normal, discharging action potentials repetitively. Brevetoxin B is ichthyotoxic at nanomolar concentrations and is responsible for an illness described as neurotoxic shellfish poisoning.

Molassamide B, a serine protease inhibitor, exhibits potent inhibitory activity, as evidenced by its IC50 values of 24.65 nM against chymotrypsin, 11.69 nM against elastase, and 5.42 nM against proteinase K [1].

Inophyllum B ((+)-Inophyllum B), a compound extracted from the acetone extract of the giant African snail, Achatina fulica [1], serves as a potent inhibitor of HIV Reverse Transcriptase with an IC50 value of 38 nM and exhibits inhibitory effects against HIV-1 in vitro cell culture with an IC50 of 1.4 μM.

Taccalonolide B is effective in vitro against cell lines that overexpress P-glycoprotein (Pgp) and multidrug-resistance protein (MRP7). Taccalonolide B inhibits growth of SK-OV-3 cells with an IC50 of 208 nM.