Napabucasin (BBI608) is a first-in-class, orally active inhibitor of Stat3 and cancer cell pluripotency that increases ROS levels through the biological activation of NAD(P) H-quinone dehydrogen1 (NQO1). Napabucasin inhibits the expressions of stemness markers and kill stemness-high cancer cells isolated from several kinds of tumors except PCa. Napabucasin also effectively blocks sphere formation of PrCSCs and kill them as well as inhibits stemness gene expression. Napabucasin inhibits cell proliferation in PC-3 cells and 22RV1 cells at 48, 72, 96, and 120 h (P<0.05).
In vivo, Napabucasin (40 mg/kg) or Docetaxel significantly reduces xenograft tumor growth and tumor volume (TV) compared with PBS (P<0.05). Notably, while no differences are observed between the Napabucasin and the docetaxel groups in PC-3 mouse xenograft models, the TV in Napabucasin group is even lower than docetaxel group in 22RV1 mouse xenograft models (P<0.05).
| Molecular Weight | 240.21 |
| Formula | C14H8O4 |
| CAS Number | 83280-65-3 |
| Solubility (25°C) | DMSO 4 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
| Related STAT Products |
|---|
| STAT3-IN-21, cell-permeable, negative control
STAT3-IN-21, cell-permeable, negative control, a peptide, is a negative control for Stat3 activity detection. |
| STAT3-IN-24, cell-permeable
STAT3-IN-24, cell-permeable (PpYLKTK-mts) is a STAT3 peptide inhibitor. |
| 5-FAM-GpYLPQTV-NH2
5-FAM-GpYLPQTV-NH2 is a fluorescently labeled peptide and has STAT3 inhibitory activity. |
| Ac-GpYLPQTV-NH2
Ac-GpYLPQTV-NH2 is a STAT3 inhibitor with an IC50 value of 0.33 μM. |
| XZH-5
XZH-5 inhibits the phosphorylation of STAT3 and results in the induction of apoptosis and reduction of colony forming ability. |
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