Title:Novel Potent EGFR-JAK3 Dual-Target Inhibitor that Overcomes KRAS Mutation
Resistance in Colorectal Cancer
Volume: 23
Issue: 4
Author(s): Tingyu Wu, Jiawen Yu, Changyuan Wang, Yue Jin, Xu Zheng, Lixue Chen*, Xiaodong Ma*Xiuli Sun*
Affiliation:
- College of Pharmacy, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, P.R. China
- College of Pharmacy, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, P.R. China
- Department of
Haematology, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, P.R. China
Keywords:
EGFR, JAK3, KRAS mutation, colorectal cancer, dual-target inhibitor, clinical research.
Abstract:
Background: In-depth and clear mechanistic study is a prerequisite for new drugs to enter clinical research.
Methods: New chemical entity BY4008 was identified by our lab as a novel and highly potent EGFR and JAK3 dualtarget
inhibitor. A cell-based test exhibited strong antiproliferative activities against SW620 and HCT116 colon cancer
cells harboring KRAS mutation with IC50 of nanomolar potency. Furthermore, acridine orange/ethidium bromide
(AO/EB), Hematoxylin-Eosin (H&E) and DAPI staining assays and flow cytometry analyses indicated that BY4008
has the function of pro-apoptosis and arresting the cell cycle. In addition, BY4008 inhibited the autophosphorylation of
EGFR and blocked the activation of downstream signaling and the JAK-STAT3 pathway.
Results: Meanwhile, a decreased level of reactive oxygen species (ROS) and an increased level of malondialdehyde
(MDA) in SW620 and HCT116 cells were observed after exposure to BY4008.
Conclusion: In summary, this study provides an important structural basis and mechanistic study for future effective
treatment of colorectal cancer.