G5-7

G5-7, an orally active and allosteric JAK2 inhibitor, selectively inhibits JAK2 mediated phosphorylation and activation of EGFR (Tyr 1068 ) and STAT3 by binding to JAK2 . G5-7 induces cell cycle arrest, apoptosis and possesses antiangiogenic effect. G5-7 has the potential for glioma study

In Vitro

G5-7 (0-5 μM) inhibits EGFR tyrosine phosphorylation and downstream mTOR signaling and arrests the cell cycle at G2 phase. G5-7 does not directly inhibit EGFR activation. G5-7 (0-10 μM) comparably increases the abundance of markers (cleved-PARP and caspase 3) of apoptosis in parental LN229 cells and U87MG/EGFRvIII cells. G5-7 interacts with full-length JAK2. G5-7 significantly inhibits EGFR Tyr1068 phosphorylation but had no effect on EGFR Tyr1045 phosphorylation. G5-7 downregulates the downstream signaling of JAK by mTOR. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Western Blot Analysis. Cell Line: U87MG/PTEN cells. Concentration: 0-5 μM. Incubation Time: 6 hours. Result: Blocked EGFR phosphorylation and cell cycle at G2 phase to inhibit cell proliferation.

In Vivo

G5-7 (10 and 50 mg/kg, oral gavege) decreases VEGF secretion and exerts a potent antiangiogenic effect . MCE has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: Cells (4 × 10 6 ) in 100 μl of serum-free DMEM were inoculated subcutaneously into 5- to 6-week-old female nude mice . Dosage: 10 and 50 mg/kg. Administration: Oral gavage. Result: Suppresses angiogenesis in tumors.

IC50& Target:JAK2