cytotoxic alkaloid

Homoharringtonine (HHT) is a natural alkaloid that inhibits the translation of proteins and is cytotoxic. Homoharringtonine acts on the ribosomes of tumor cells to inhibit the elongation step of protein translation, thereby inhibiting protein synthesis, and has antitumor activity.

Jatrorrhizine (neprotin) is a protoberberine alkaloid isolated from Enantia chlorantha (Annonaceae) and other species. It was found to have antimicrobial and antifungal activity. It binds and noncompetitively inhibits monoamine oxidase (IC50 4 micromolar for MAO-A and 62 for MAO-B).

Ceratamine A, an antimitotic heterocyclic alkaloid isolated from the marine sponge Pseudoceratina sp., functions as a microtubule-stabilizing agent with cytotoxic effects against human cancer cell lines.

Jineol (NSC-694081) is a quinoline alkaloid from Scolopendra subspinipes. Jineol shows cytotoxic activity against the growth of human tumor cell lines in vitro.

Stephacidin B is a fungal metabolite that has been found inA. ochraceus.1Dimeric stephacidin B is rapidly converted to a monomer, avrainvillamide ,in vitro.2Stephacidin B is cytotoxic to a variety of cancer cells, including testosterone-independent PC3 and -sensitive LNCaP prostate cancer cells (IC50s = 0.37 and 0.06 μM, respectively) and estradiol-independent SK-BR-3 and -sensitive MCF-7 breast cancer cells (IC50s = 0.32 and 0.27 μM, respectively).1It induces apoptosis in HepG2 and Huh7 hepatocellular carcinoma cells when used at a concentration of 4 μM.3 1.Qian-Cutrone, J., Huang, S., Shu, Y.-Z., et al.Stephacidin A and B: Two structurally novel, selective inhibitors of the testosterone-dependent prostate LNCaP cellsJ. Am. Chem. Soc.124(49)14556-14557(2002) 2.Wulff, J.E., Herzon, S.B., Siegrist, R., et al.Evidence for the rapid conversion of stephacidin B into the electrophilic monomer avrainvillamide in cell cultureJ. Am. Chem. Soc.129(16)4898-4899(2007) 3.Hu, L., Zhang, T., Liu, D., et al.Notoamide-type alkaloid induced apoptosis and autophagy via a P38/JNK signaling pathway in hepatocellular carcinoma cellsRSC Adv.9(34)19855-19868(2019)

(+)-Intermedine, a pyrrolizidine alkaloid (PA), exhibits significant cytotoxic activity against neural progenitor cells (NPCs).

Guattegaumerine, a bisbenzylisoquinoline alkaloid, exhibits antimitotic, cytotoxic, and neuroprotective activities.

Agrochelin, an alkaloid cytotoxic antibiotic, is synthesized via fermentation of a marine Agrobacterium sp. This compound demonstrates cytotoxic activity against tumor cell lines.

Jatrorrhizine chloride (Neprotine chloride) is a potent and orally active uptake-2 transporter inhibitor. It exhibits a critical neuroprotective role in H2O2-induced apoptosis via inhibition of the MAPK pathway in HT22 hippocampal neurons.

Xylopine, an aporphine alkaloid, exhibits cytotoxic effects on cancer cells by inducing oxidative stress, provoking G2 M cell cycle arrest, and triggering apoptosis [1].

Aristolactam A III (Aristololactam A III) is an alkaloid with potential cytotoxic properties, extracted from the herb Houttuyniae herba [1].

4,5-Dimethoxycanthin-6-one is an alkaloid isolated from Picrasma quassioides BENNET (Simaroubaceae) with antimicrobial activity against Staphylococcus aureus and its drug-resistant strains. It is a potent, non-competitive inhibitor of CYP1A2-mediated phenacetin O-deethylation (IC50: 1.7 μM, Ki: 2.6 μM) and a potent inhibitor of cyclic adenosine monophosphate (cAMP) phosphodiesterase. Additionally, it exhibits cytotoxicity to tumor cell lines U937 and HepG2.

(–)-Voacangarine, an indole alkaloid isolated from V. africana, exhibits cytotoxicity towards various cell lines including HepG2, A375, MDA-MB-231, SH-SY5Y, and CT26 with IC50 values of 20 µg/ml. Additionally, it demonstrates cytostatic effects on wild-type S. cerevisiae and is cytotoxic to Δrad3-e5 and Δrad6-1 mutant strains of S. cerevisiae, which have defects in DNA strand break repair and the mutagenic repair pathway, respectively.

Glycozolidal (compound 12) is a carbazole alkaloid that exhibits antimicrobial activity against Porphyromonas gingivalis (P. gingivalis). In vitro studies have shown that Glycozolidal displays cytotoxic effects on human gingival fibroblasts (HGFs) and monocytic cells (U937), with IC50 values of 120.86 µg mL and 97.74 µg mL, respectively.