DS-7423 is a dual PI3K and mTOR inhibitor, with IC50 values of 15.6 nM, 34.9 nM for PI3Kα and mTOR, respectively. DS-7423 possesses anti-tumor activity[1][2].
DS-7423 increases TP53 expression, the level of p-TP53 on Ser-46, and induced apoptosisrelated TP53 target genes (TP53AIP1 and PUMA) in OCCC cells[1].DS-7423 also inhibits other isoforms of class I PI3K (IC50 values: PI3Kβ = 1,143 nM; PI3Kγ = 249 nM; PI3Kδ = 262 nM)[2].
[1]. Katsutoshi Oda, et al. Characterization of TP53 and PI3K signaling pathways as molecular targets in gynecologic malignancies. J Obstet Gynaecol Res. 2016 Jul;42(7):757-62.
[2]. Tomoko Kashiyama, et al. Antitumor activity and induction of TP53-dependent apoptosis toward ovarian clear cell adenocarcinoma by the dual PI3K/mTOR inhibitor DS-7423. PLoS One. 2014 Feb 4;9(2):e87220.