YK 4-279 is an inhibitor of RNA Helicase A (RHA) binding to the oncogenic transciption factor EWS-FLI1. YK-4-279 inhibits Ewing's sarcoma family tumor (ESFT) cell growth; YK-4-279 induces apoptosis.

≥98%

Store at -20℃ for one year（Powder）；Store at 2-4℃ for two weeks；Store at -20℃ for six months after dissolution.

YK 4-279

White or off white solid

DMSO : 25 mg/mL (68.27 mM)

RNA helicase A

YK-4-279 eliminates cyclin D levels by blocking the interaction of EWS-FLI1 with RHA in EWS-FLI1-containing TC32 cells. YK-4-279 also specifically inhibits ESFT cell growth and induces apoptosis. YK-4-279 also inhibits ERG and ETV1 biological activity in fusion-positive prostate cancer cells, and further decreases cell motility and invasion.

In vivo, YK-4-279 (1.5 mg/dose i.p.) inhibits the growth of ESFT xenograft tumors. In mouse model, YK-4-279 selectively prevents prostate cancer growth and metastasis in fusion-positive LNCaP-luc-M6 tumors.