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Updated: Apr 5, 2026

Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
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G-Protein-Coupled Receptors: Next Generation Therapeutic Targets in Head and Neck Cancer?

Takeharu Kanazawa1,2, Kiyoshi Misawa3,4, Yuki Misawa5,6

  • 1Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University, Shimotsuke 329-0498, Japan. kanatake@omiya.jichi.ac.jp.

Toxins
|August 8, 2015
PubMed

Insights

G protein-coupled receptors (GPCRs) show promise for treating head and neck squamous cell carcinoma (HNSCC). Silenced GPCRs correlate with poor prognosis, but their activation inhibits tumor growth, offering new therapeutic and prognostic strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacogenomics

Background:

  • Head and neck squamous cell carcinoma (HNSCC) presents poor therapeutic outcomes in advanced stages.
  • Discovery of novel therapeutic targets and prognostic factors is crucial for improving HNSCC treatment efficiency.

Purpose of the Study:

  • To investigate the role of specific G protein-coupled receptors (GPCRs) as potential therapeutic targets and prognostic factors in HNSCC.
  • To review the functions of galanin receptor type 1 (GALR1), galanin receptor type 2 (GALR2), tachykinin receptor type 1 (TACR1), and somatostatin receptor type 1 (SST1) in HNSCC.

Main Methods:

  • Analysis of GPCR expression in HNSCC compared to normal tissue.
  • Correlation of GPCR epigenetic silencing with clinical behavior and patient survival.
  • Review of studies on the functional roles of GALR1, GALR2, TACR1, and SST1 in HNSCC cell proliferation and apoptosis.

Main Results:

  • Significant epigenetic silencing of GPCRs (GALR1, GALR2, TACR1, SST1) in HNSCC correlates with poorer clinical outcomes.
  • GALR1 inhibits HNSCC proliferation via ERK1/2 pathway modulation of cell cycle proteins.
  • GALR2 inhibits proliferation and induces apoptosis in HNSCC cells.
  • Hypermethylation of these GPCRs is linked to reduced disease-free survival and increased recurrence rates.

Conclusions:

  • GPCRs, including GALR1, GALR2, TACR1, and SST1, serve as valuable prognostic factors in HNSCC.
  • These GPCRs represent promising therapeutic targets for HNSCC treatment.
  • Further research into GPCRs can significantly advance pharmacogenomics and prognostic strategies for HNSCC.
Keywords:
biomarkerhead and neck neoplasmmolecular targeted therapytreatment

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