9d3w

CRYSTAL STRUCTURE OF EGFR(L858R/T790M/C797S) IN COMPLEX WITH AUR-8250

spinqualitylabelsall models 9d3w, resolution 2.53Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9d3w is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.53Å Ligands: A1A5L, CL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease EGFR_HUMAN Defects in EGFR are associated with lung cancer (LNCR) [MIM:211980. LNCR is a common malignancy affecting tissues of the lung. The most common form of lung cancer is non-small cell lung cancer (NSCLC) that can be divided into 3 major histologic subtypes: squamous cell carcinoma, adenocarcinoma, and large cell lung cancer. NSCLC is often diagnosed at an advanced stage and has a poor prognosis. Function EGFR_HUMAN Receptor tyrosine kinase binding ligands of the EGF family and activating several signaling cascades to convert extracellular cues into appropriate cellular responses. Known ligands include EGF, TGFA/TGF-alpha, amphiregulin, epigen/EPGN, BTC/betacellulin, epiregulin/EREG and HBEGF/heparin-binding EGF. Ligand binding triggers receptor homo- and/or heterodimerization and autophosphorylation on key cytoplasmic residues. The phosphorylated receptor recruits adapter proteins like GRB2 which in turn activates complex downstream signaling cascades. Activates at least 4 major downstream signaling cascades including the RAS-RAF-MEK-ERK, PI3 kinase-AKT, PLCgamma-PKC and STATs modules. May also activate the NF-kappa-B signaling cascade. Also directly phosphorylates other proteins like RGS16, activating its GTPase activity and probably coupling the EGF receptor signaling to the G protein-coupled receptor signaling. Also phosphorylates MUC1 and increases its interaction with SRC and CTNNB1/beta-catenin. Isoform 2 may act as an antagonist of EGF action. Publication Abstract from PubMed Despite the success of first, second, and third generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) for non-small cell lung cancer with classical EGFR mutations (L858R or Exon 19 deletions), disease progression occurs due to the acquisition of T790M and C797S resistance. Herein, we report a physics-based computationally driven lead identification approach that identified structurally unique imidazo[3.2-b]pyrazoles as reversible and wild-type-sparing EGFR TKIs of classical mutations bearing both T790M and C797S. During profiling of imidazo[3.2-b]pyrazoles, we elucidated the bioactivation mechanism causing CYP3A4/5 time-dependent inhibition (TDI) and found key modifications to mitigate the TDI. Compound 31 inhibited EGFR L858R/T790M/C797S in biochemical assays with a K(i) = 2.1 nM and EGFR del19/T790M/C797S in a Ba/F3 cellular assay with an IC(50) = 56.9 nM. The deuterated analogue of 31 (38) demonstrated dose-dependent tumor growth inhibition in a Ba/F3 EGFR del19/T790M/C797S CDX model by 47% at 50 mg/kg BID and 92% at 100 mg/kg BID. Discovery of a Novel Mutant-Selective Epidermal Growth Factor Receptor Inhibitor Using an In Silico Enabled Drug Discovery Platform.,Igawa H, Konst ZA, Therrien E, Shelley M, Koldso H, Bos PH, Negri A, Verras A, Guo J, Dahlgren MK, Levinson A, Parr BT, Kurhade SE, Latthe P, Shetty R, Santhanakrishnan S, Amberg-Johnson K, Futran AS, Atsriku C, Pelletier RD, Liu Z, Bell JA, Bhat S, Svensson M, Gerasyuto AI J Med Chem. 2024 Dec 26;67(24):21811-21840. doi: 10.1021/acs.jmedchem.4c01405. , Epub 2024 Dec 12. PMID:39666597 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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