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Updated: Feb 5, 2026
Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model
Published on: March 20, 2020
Quantitative Proteomic Profiling Reveals Key Pathways in the Anticancer Action of Methoxychalcone Derivatives in
Catherine C Going1, Dhanir Tailor2, Vineet Kumar2
1Department of Radiology, Canary Center at Stanford for Cancer Early Detection , Stanford University School of Medicine , Palo Alto , California 94304 , United States.
Abstract:
Triple negative breast cancer is an aggressive, heterogeneous disease with high recurrence and metastasis rates even with modern chemotherapy regimens and thus is in need of new therapeutics. Here, three novel synthetic analogues of chalcones, plant-based molecules that have demonstrated potency against a wide variety of cancers, were investigated as potential therapeutics for triple negative breast cancer. These compounds exhibit IC50 values of ∼5 μM in triple negative breast cancer cell lines and are more potent against triple negative breast cancer cell lines than against nontumor breast cell lines according to viability experiments. Tandem mass tag-based quantitative proteomics followed by gene set enrichment analysis and validation experiments using flow cytometry, apoptosis, and Western blot assays revealed three different anticancer mechanisms for these compounds. First, the chalcone analogues induce the unfolded protein response followed by apoptosis. Second, increases in the abundances of MHC-I pathway proteins occurs, which would likely result in immune stimulation in an organism. And third, treatment with the chalcone analogues causes disruption of the cell cycle by interfering with microtubule structure and by inducing G1 phase arrest. These data demonstrate the potential of these novel chalcone derivatives as treatments for triple negative breast cancer, though further work evaluating their efficacy in vivo is needed.
Insights
Novel chalcone derivatives show promise as triple negative breast cancer therapeutics. These compounds induce apoptosis, stimulate immune response, and disrupt cell cycle, offering new treatment avenues.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Triple negative breast cancer (TNBC) is aggressive and heterogeneous, with high recurrence and metastasis rates.
- Current chemotherapy regimens are insufficient, highlighting the need for novel therapeutic strategies.
- Chalcones, plant-derived molecules, show broad-spectrum anticancer activity.
Purpose of the Study:
- To investigate three novel synthetic chalcone analogues as potential therapeutics for triple negative breast cancer.
- To elucidate the anticancer mechanisms of these chalcone derivatives in TNBC cells.
Main Methods:
- Cell viability assays to determine IC50 values against TNBC and non-tumor breast cell lines.
- Tandem mass tag (TMT)-based quantitative proteomics.
- Gene set enrichment analysis (GSEA).
- Validation experiments including flow cytometry, apoptosis assays, and Western blotting.
Main Results:
- Chalcone analogues exhibited IC50 values around 5 μM against TNBC cell lines, demonstrating greater potency than in non-tumor cells.
- Proteomic analysis revealed three distinct anticancer mechanisms: induction of the unfolded protein response (UPR) leading to apoptosis, upregulation of MHC-I pathway proteins suggesting immune stimulation, and cell cycle disruption via microtubule interference and G1 phase arrest.
- Flow cytometry, apoptosis assays, and Western blots validated these findings.
Conclusions:
- The novel chalcone derivatives possess significant potential as treatments for triple negative breast cancer.
- These compounds exert anticancer effects through multiple pathways, including apoptosis induction, immune modulation, and cell cycle arrest.
- Further in vivo studies are warranted to evaluate the therapeutic efficacy of these chalcone derivatives.
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