Cellular Plasticity-Targeted Therapy in Head and Neck Cancers

Area of Science:

• Oncology
• Cancer Biology
• Molecular Medicine

Background:

• Head and neck cancer, especially head and neck squamous cell carcinoma (HNSCC), is a prevalent malignancy with high recurrence and metastasis rates.
• HNSCC exhibits cellular and molecular heterogeneity, featuring cancer stem cells (CSCs) with stem cell-like properties.
• Cellular plasticity, driven by epithelial-mesenchymal transition, gene mutations, and epigenetic modifications, contributes to HNSCC invasiveness, recurrence, metastasis, and therapeutic resistance.

Purpose of the Study:

• To review the mechanisms of cellular plasticity and CSC emergence in HNSCC.
• To highlight the interplay between the tumor microenvironment (TME), plastic CSCs, and HNSCC progression.
• To discuss current HNSCC treatments and the potential of targeting CSCs.

Main Methods:

• Literature review of studies on HNSCC, cellular plasticity, CSCs, and TME.
• Analysis of mechanisms driving CSC formation and their role in HNSCC.
• Synthesis of information on TME components influencing CSCs and therapeutic resistance.

Main Results:

• Cellular plasticity and CSCs are key drivers of HNSCC invasiveness, recurrence, and metastasis.
• The TME, comprising stromal fibroblasts, vasculature, immune cells, cytokines, and hypoxia, supports CSC properties and therapeutic resistance.
• Complex interactions between TME components and plastic CSCs promote tumorigenesis and treatment failure.

Conclusions:

• Understanding the mechanisms of cellular plasticity and CSCs in HNSCC is crucial.
• Targeting CSCs within the tumor microenvironment presents a promising therapeutic strategy for HNSCC.
• Novel treatment approaches focusing on CSCs are needed to overcome recurrence and resistance in HNSCC.