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The Role of Hedgehog Signaling Pathway in Head and Neck Squamous Cell Carcinoma
Piotr Cierpikowski1, Anna Leszczyszyn2, Julia Bar3
1Department of Maxillofacial Surgery, The Ludwik Rydygier Specialist Hospital, Osiedle Zlotej Jesieni 1, 31-826 Krakow, Poland.
Abstract:
Head and neck squamous cell carcinoma (HNSCC) is the sixth leading malignancy worldwide, with a poor prognosis and limited treatment options. Molecularly targeted therapies for HNSCC are still lacking. However, recent reports provide novel insights about many molecular alterations in HNSCC that may be useful in future therapies. Therefore, it is necessary to identify new biomarkers that may provide a better prediction of the disease and promising targets for personalized therapy. The poor response of HNSCC to therapy is attributed to a small population of tumor cells called cancer stem cells (CSCs). Growing evidence indicates that the Hedgehog (HH) signaling pathway plays a crucial role in the development and maintenance of head and neck tissues. The HH pathway is normally involved in embryogenesis, stem cell renewal, and tissue regeneration. However, abnormal activation of the HH pathway is also associated with carcinogenesis and CSC regulation. Overactivation of the HH pathway was observed in several tumors, including basal cell carcinoma, that are successfully treated with HH inhibitors. However, clinical studies about HH pathways in HNSCC are still rare. In this review, we summarize the current knowledge and recent advances regarding the HH pathway in HNSCC and discuss its possible implications for prognosis and future therapy.
Insights
Head and neck squamous cell carcinoma (HNSCC) is a major cancer with few treatments. The Hedgehog (HH) signaling pathway may offer new therapeutic targets for HNSCC, potentially improving patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Head and neck squamous cell carcinoma (HNSCC) presents a significant global health challenge with limited therapeutic strategies.
- Cancer stem cells (CSCs) contribute to HNSCC's therapeutic resistance.
- The Hedgehog (HH) signaling pathway is implicated in tissue development and carcinogenesis.
Purpose of the Study:
- To review current knowledge on the Hedgehog (HH) signaling pathway in HNSCC.
- To explore the role of the HH pathway in HNSCC development, CSC regulation, and therapeutic resistance.
- To discuss the potential of targeting the HH pathway for novel HNSCC therapies.
Main Methods:
- Literature review of recent advances in HH pathway research related to HNSCC.
- Analysis of studies investigating HH pathway activation in HNSCC and its association with cancer stem cells.
- Synthesis of information on the therapeutic implications of HH pathway inhibition in other cancers.
Main Results:
- The Hedgehog (HH) signaling pathway is crucial for normal head and neck tissue development.
- Aberrant HH pathway activation is linked to HNSCC development and the maintenance of cancer stem cells (CSCs).
- While HH inhibitors are effective in other cancers, their clinical application in HNSCC is under-investigated.
Conclusions:
- The Hedgehog (HH) pathway represents a promising target for developing novel molecularly targeted therapies for HNSCC.
- Further clinical investigation of HH pathway inhibitors is warranted to improve HNSCC prognosis and treatment outcomes.
- Identifying biomarkers associated with HH pathway activity could facilitate personalized therapy approaches for HNSCC.
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