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|Ref Type||Journal Article|
|Authors||Jalota-Badhwar A, Bhatia DR, Boreddy S, Joshi A, Venkatraman M, Desai N, Chaudhari S, Bose J, Kolla LS, Deore V, Yewalkar N, Kumar S, Sharma R, Damre A, More A, Sharma S, Agarwal VR|
|Title||P7170: A Novel Molecule with Unique Profile of mTORC1/C2 and Activin Receptor-like Kinase 1 Inhibition Leading to Antitumor and Antiangiogenic Activity.|
|Journal||Molecular cancer therapeutics|
|Abstract Text||The mTOR pathway is often upregulated in cancer and thus intensively pursued as a target to design novel anticancer therapies. Approved and emerging drugs targeting the mTOR pathway have positively affected the clinical landscape. Recently, activin receptor-like kinase 1 (ALK1), belonging to the TGFβ receptor family, has been reported as an emerging target for antiangiogenic cancer therapy. Here, we describe a novel orally efficacious compound, P7170, that inhibits mTORC1/mTORC2/ALK1 activity with a potent cell growth inhibition. In cell-based assays, P7170 strongly inhibited (IC50 < 10 nmol/L) the phosphorylation of p70S6K (T389) and pAKT (S473). In many cancer cell lines, such as prostate, ovarian, colon, and renal, P7170 treatment resulted in marked cell growth inhibition. Furthermore, it induced G1-S cell-cycle arrest and autophagy. In vitro HUVEC tube formation, in vivo Matrigel plug, and rat aorta ring assays demonstrated that P7170 exhibited significant antiangiogenic activity. In addition, ALK1 knockdown studies in HUVEC confirmed that the antiangiogenic activity of P7170 was primarily due to ALK1 inhibition. Strong inhibition of ALK1 in addition to mTORC1/mTORC2 differentiates P7170 in its mechanism of action in comparison with existing inhibitors. In vivo mouse xenograft studies revealed P7170 to exhibit a significant dose-dependent tumor growth inhibition in a broad range of human tumor types when administered orally at 10 to 20 mg/kg doses. The distinctive pharmacological profile with favorable pharmacokinetic parameters and in vivo efficacy makes P7170 an attractive candidate for clinical development. It is currently being tested in phase I clinical studies.|
|Molecular Profile||Treatment Approach|
|Gene Name||Source||Synonyms||Protein Domains||Gene Description||Gene Role|
|Therapy Name||Drugs||Efficacy Evidence||Clinical Trials|
|Drug Name||Trade Name||Synonyms||Drug Classes||Drug Description|
|Panulisib||P7170|AK15176||ALK Inhibitor 23 DNA_PK Inhibitor 6 mTOR Inhibitor 51 PI3K Inhibitor (Pan) 38||Panulisib (P7170) inhibits Pi3k, mTOR, Alk, and DNA-PK, resulting in inhibition of cancer cell growth (PMID: 25466244, PMID: 25700704).|
|Gene||Variant||Impact||Protein Effect||Variant Description||Associated with drug Resistance|
|Molecular Profile||Indication/Tumor Type||Response Type||Therapy Name||Approval Status||Evidence Type||Efficacy Evidence||References|
|PIK3CA amp||ovarian cancer||sensitive||Panulisib||Preclinical||Actionable||In a preclinical study, Panulisib (P7170) downregulated mTOR pathway signaling in ovarian cancer cells with amplified PIK3CA (PMID: 25700704).||25700704|
|Unknown unknown||Advanced Solid Tumor||not applicable||Panulisib||Preclinical - Cell line xenograft||Actionable||In a preclinical study, Panulisib (P7170) inhibited growth of several solid tumor cell lines in culture and in cell line xenograft models (PMID: 25700704).||25700704|