Information Marinopyrrole A (Maritoclax) Marinopyrrole A (Maritoclax) is a selective Mcl-1 antagonist. It binds to Mcl-1, but not Bcl-XL, and targets Mcl-1 for proteasomal degradation. Maritoclax disrupts the interaction between Bim and Mcl-1 with an IC50 of 10.1 μM. Targets Mcl-1 In vitro Maritoclax induces Mcl-1 degradation via the proteasome system, which is associated with the pro-apoptotic activity of maritoclax. Maritoclax selectively kills Mcl-1-dependent, but not Bcl-2- or Bcl-XL-dependent, leukemia cells and markedly enhances the efficacy of ABT-737 against hematologic malignancies, including K562, Raji, and multidrug-resistant HL60/VCR, by ∼60- to 2000-fold at 1-2 μM. Maritoclax blocks the interaction between a biotin-labeled Bim-BH3 peptide and GST-Mcl-1 in a dose-dependent manner with an IC50 value of 10.1 μM, while it does not inhibit the binding of Bim-BH3 peptide to GST-Bcl-XL at concentrations up to 80 μM. Maritoclax induces caspase-3 activation by degradation of Mcl-1 protein. Treatment with maritoclax markedly reduces the half-life of Mcl-1 to ∼0.5 h as compared with nearly 3 h in control cells. Maritoclax has no apparent effect on Mcl-1 (Ser159/Thr163) phosphorylation, suggesting that maritoclax induces phosphorylation-independent Mcl-1 degradation. Marinopyrrole A has potent concentration-dependent bactericidal activity against clinically relevant hospital- and community-acquired MRSA strains. Marinopyrrole A shows limited toxicity to mammalian cell lines (at >20× MIC). Maritoclax sensitivity is cell type specific. It is not effective in HeLa, HEK293, or MEF cells. Maritoclax is not a substrate for p-gp mediated drug efflux. In vivo Maritoclax administration at 20 mg/kg/d intraperitoneally causes significant U937 tumor shrinkage, as well as 36% tumors remission rate in athymic nude mice, without apparent toxicity to healthy tissue or circulating blood cells. Cell Research(from reference) Cell lines：K562 cells Concentrations：2 μM Incubation Time：12 h
All
Chemical Reagents
Biomedicine
Organic raw materials
Inorganic chemical industry
intermediate
Agricultural chemicals
Auxiliaries and catalysts
Fragrances and Flavors
Dyes and Pigments
Daily chemical industry
Marinopyrrole A (Maritoclax)
CAS number：1227962-62-0 molecular formula：C22H12Cl4N2O4
overview
compound introduction
Specs
| Chinese alias | 马里诺吡咯 A(Maritoclax) | ||
| English alias | Methanone,1,1'-[(1R)-4,4',5,5'-tetrachloro[1,3'-bi-1H-pyrrole]-2,2'-diyl]bis[1-(2-hydroxyphenyl)- | ||
| CAS number | 1227962-62-0 | molecular formula | C22H12Cl4N2O4 |
| molecular weight | 510.15 g/mol | Exact mass | 10mM in DMSO |
| PSA | 95.300 Ų | logp | 6.953 |
numbering system
No numbering system information yet
physicochemical properties
No physical and chemical property information yet
Safety information
No safety information yet
Production methods and uses
No production method and use information yet
Related
upstream information
No upstream information yet
downstream information
No downstream information yet
MSDS
Found 0 shareMSDS
