Table 2.
The Z-scores and major functions of 21 hits at 20 μg/ml from primary screening of the Natural Products Library.
| Compound name | CAS number | Mass (g/mol) | Z score | Structural family | Major functiona,b |
|---|---|---|---|---|---|
| Sanguinarine | 5578-73-4 | 332.1 | 7.92 | Benzophenanthridine alkaloid | Inducer of DNA damage |
| Datiscetin | 480-15-9 | 286.2 | 7.66 | Hydroxylated flavonoid | ? |
| Wortmannin | 19545-26-7 | 428.4 | 5.86 | Steroid | Inhibitor of PI3K/DNA-PK and DNA repair |
| HC toxin | 83209-65-8 | 436.5 | 5.55 | Cyclic tetrapeptide | HDAC inhibitor |
| Hypocrellin B | 123940-54-5 | 528.5 | 5.18 | Perylenequinone | Inducer of DNA strand breakage |
| Parthenolide | 20554-84-1 | 248.3 | 4.99 | Sesquiterpene lactone | HDAC inhibitor |
| Tetrandrine | 518-34-3 | 622.8 | 4.88 | Bisbenzylisoquinoline alkaloid | Calcium channel blocker |
| Apicidin | 183506-66-3 | 623.8 | 4.42 | Cyclic tetrapeptide | HDAC inhibitor |
| (–)-Depudecin | 139508-73-9 | 212.2 | 3.95 | Polyketide | HDAC inhibitor |
| Isotetrandrine | 477-57-6 | 622.8 | 3.91 | Bisbenzylisoquinoline alkaloid | Calcium channel blocker |
| Silibinin | 22888-70-6 | 482.4 | 3.11 | Flavonolignan | STAT3, cyclo- and lipoxygenase inhibitor |
| Sclerotiorin | 549-23-5 | 390.9 | 3.1 | Azaphilone | HSP90 and lipoxygenase inhibitor |
| Cytochalasin D | 22144-77-0 | 507.6 | 3.04 | Alkaloid | Actin polymerization inhibitor |
| Trichostatin A | 58880-19-6 | 302.4 | 2.7 | Hydroxamic acid | HDAC inhibitor |
| Radicicol | 12772-57-5 | 364.8 | 2.31 | Polyketide | HSP90 and DNA topoisomerase II inhibitor |
| Tamarixetin | 603-61-2 | 316.3 | 2.29 | O-methylated flavonoid | ? |
| Carminic acid | 1260-17-9 | 492.4 | 2.07 | Glucosidal hydroxyanthrapurin | ? |
| Forskolin | 66575-29-9 | 410.5 | 2.06 | Labdane diterpene | Adenylyl cyclase agonist |
| Dihydroergocristine mesylate | 24730-10-7 | 707.8 | 2.06 | Ergot alkaloid | Serotonin receptor antagonist |
| Brassinin | 105748-59-2 | 236.4 | 2.04 | Indole phytoalexin | STAT3 and PI3K/Akt/mTOR inhibitor |
| Robinetin | 490-31-3 | 302.2 | 2.01 | Hydroxylated flavonoid | ? |
a
Although there is little information on their biological activities, datiscetin, tamarixetin, and robinetin are expected to have similar epigenetic functions in histone acetylation to structurally related quercetin.
b
PI3K, phosphatidylinositide 3-kinases; DNA-PK, DNA-dependent protein kinase; HDAC, histone deacetylase; STAT3, signal transducer and activator of transcription 3; HSP90, heat shock protein 90; AKT, protein kinase B; mTOR, mechanistic target of rapamycin.