Molecule Information

General Information of the Molecule (ID: Mol04232)

• Name: Epidermal growth factor receptor (EGFR) ,Homo sapiens
• Synonyms: Epidermal growth factor receptor (EGFR)
• Molecule Type: Protein

Kingdom: Metazoa
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: Homo sapiens

Type(s) of Resistant Mechanism of This Molecule

  UAPP: Unusual Activation of Pro-survival Pathway

Drug Resistance Data Categorized by Drug

Approved Drug(s) 1 drug(s) in total

Dacomitinib

Drug Sensitivity Data Categorized by Their Corresponding Mechanisms

Unusual Activation of Pro-survival Pathway (UAPP)

Disease Class: Ovarian cancer [ICD-11: 2C73.0] [1]

• Sensitive Disease: Ovarian cancer [ICD-11: 2C73.0]
• Sensitive Drug: Dacomitinib
• Molecule Alteration: Phosphorylation; Up-regulation
• Experimental Note: Revealed Based on the Cell Line Data
• Cell Pathway Regulation: EGFR signaling pathway; Inhibition; hsa01521
• Experiment for Molecule Alteration: Western blot assay
• Experiment for Drug Resistance: LDH assay; Flow cytometry assay
• Mechanism Description: Our study aimed to analyze the cellular mechanism of dacomitinib, a pan-epidermal growth factor receptor (EGFR) inhibitor, which resensitized paclitaxel and induced cell cytotoxicity in paclitaxel-resistant ovarian cancer SKOV3-TR cells. We investigated the significant reduction in cell viability cotreated with dacomitinib and paclitaxel by WST-1 assay and flow cytometry analysis. Dacomitinib inhibited EGFR family proteins, including EGFR and HER2, as well as its downstream signaling proteins, including AKT, STAT3, ERK, and p38. In addition, dacomitinib inhibited the phosphorylation of Bad, and combination treatment with paclitaxel effectively suppressed the expression of Mcl-1. A 2'-7'-dichlorodihydrofluorescein diacetate (DCFH-DA) assay revealed a substantial elevation in cellular reactive oxygen species (ROS) levels in SKOV3-TR cells cotreated with dacomitinib and paclitaxel, which subsequently mediated cell cytotoxicity.

References

• Ref 1: Pan-EGFR Inhibitor Dacomitinib Resensitizes Paclitaxel and Induces Apoptosis via Elevating Intracellular ROS Levels in Ovarian Cancer SKOV3-TR Cells. Molecules. 2024 Jan 4;29(1):274.