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Updated: May 6, 2026

Intramucosal Inoculation of Squamous Cell Carcinoma Cells in Mice for Tumor Immune Profiling and Treatment Response Assessment
Published on: April 22, 2019
Bitter melon reduces head and neck squamous cell carcinoma growth by targeting c-Met signaling
Ananthi Rajamoorthi1, Shubham Shrivastava, Robert Steele
1Department of Pathology, Saint Louis University, St. Louis, Missouri, United States of America.
Abstract:
Head and neck squamous cell carcinoma (HNSCC) remains difficult to treat, and despite of advances in treatment, the overall survival rate has only modestly improved over the past several years. Thus, there is an urgent need for additional therapeutic modalities. We hypothesized that treatment of HNSCC cells with a dietary product such as bitter melon extract (BME) modulates multiple signaling pathways and regresses HNSCC tumor growth in a preclinical model. We observed a reduced cell proliferation in HNSCC cell lines. The mechanistic studies reveal that treatment of BME in HNSCC cells inhibited c-Met signaling pathway. We also observed that BME treatment in HNSCC reduced phosphoStat3, c-myc and Mcl-1 expression, downstream signaling molecules of c-Met. Furthermore, BME treatment in HNSCC cells modulated the expression of key cell cycle progression molecules leading to halted cell growth. Finally, BME feeding in mice bearing HNSCC xenograft tumor resulted in an inhibition of tumor growth and c-Met expression. Together, our results suggested that BME treatment in HNSCC cells modulates multiple signaling pathways and may have therapeutic potential for treating HNSCC.
Insights
Bitter melon extract (BME) shows therapeutic potential for head and neck squamous cell carcinoma (HNSCC). BME inhibits tumor growth and key signaling pathways, offering a novel treatment strategy for HNSCC.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Head and neck squamous cell carcinoma (HNSCC) presents significant treatment challenges with limited survival improvements.
- There is a critical need for novel therapeutic strategies to combat HNSCC.
Purpose of the Study:
- To investigate the therapeutic potential of bitter melon extract (BME) in head and neck squamous cell carcinoma (HNSCC).
- To determine if BME modulates key signaling pathways and inhibits HNSCC tumor growth in preclinical models.
Main Methods:
- In vitro studies using HNSCC cell lines treated with BME.
- Mechanistic investigations into signaling pathways affected by BME, including c-Met, phosphoStat3, c-myc, and Mcl-1.
- In vivo studies involving mice bearing HNSCC xenograft tumors fed with BME.
Main Results:
- BME treatment reduced cell proliferation in HNSCC cell lines.
- BME inhibited the c-Met signaling pathway and its downstream molecules (phosphoStat3, c-myc, Mcl-1) in HNSCC cells.
- BME administration in mice significantly inhibited HNSCC xenograft tumor growth and reduced c-Met expression.
Conclusions:
- Bitter melon extract (BME) demonstrates potential as a therapeutic agent for HNSCC.
- BME exerts its anti-cancer effects by modulating multiple signaling pathways, including the c-Met pathway.
- Further research into BME as a treatment for HNSCC is warranted.
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