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• W3212592997 endingPage "5746" @default.
• W3212592997 startingPage "5746" @default.
• W3212592997 abstract "The HER2 receptor and its MUC4 mucin partner form an oncogenic complex via an extracellular region of MUC4 encompassing three EGF domains that promotes tumor progression of pancreatic cancer (PC) cells. However, the molecular mechanism of interaction remains poorly understood. Herein, we decipher at the molecular level the role and impact of the MUC4EGF domains in the mediation of the binding affinities with HER2 and the PC cell tumorigenicity. We used an integrative approach combining in vitro bioinformatic, biophysical, biochemical, and biological approaches, as well as an in vivo study on a xenograft model of PC. In this study, we specified the binding mode of MUC4EGF domains with HER2 and demonstrate their growth factor-like biological activities in PC cells leading to stimulation of several signaling proteins (mTOR pathway, Akt, and β-catenin) contributing to PC progression. Molecular dynamics simulations of the MUC4EGF/HER2 complexes led to 3D homology models and identification of binding hotspots mediating binding affinity with HER2 and PC cell proliferation. These results will pave the way to the design of potential MUC4/HER2 inhibitors targeting the EGF domains of MUC4. This strategy will represent a new efficient alternative to treat cancers associated with MUC4/HER2 overexpression and HER2-targeted therapy failure as a new adapted treatment to patients." @default.
• W3212592997 created "2021-11-22" @default.
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• W3212592997 date "2021-11-16" @default.
• W3212592997 modified "2023-10-18" @default.
• W3212592997 title "The EGF Domains of MUC4 Oncomucin Mediate HER2 Binding Affinity and Promote Pancreatic Cancer Cell Tumorigenesis" @default.
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• W3212592997 doi "https://doi.org/10.3390/cancers13225746" @default.
• W3212592997 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8616066" @default.
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• W3212592997 hasPublicationYear "2021" @default.
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