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Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
Published on: April 20, 2018
Targeting DNA damage response as a potential therapeutic strategy for head and neck squamous cell carcinoma
Huimin Lei1, Ading He1, Yingying Jiang1
1School of Stomatology, Weifang Medical University, Weifang, China.
Abstract:
Cells experience both endogenous and exogenous DNA damage daily. To maintain genome integrity and suppress tumorigenesis, individuals have evolutionarily acquired a series of repair functions, termed DNA damage response (DDR), to repair DNA damage and ensure the accurate transmission of genetic information. Defects in DNA damage repair pathways may lead to various diseases, including tumors. Accumulating evidence suggests that alterations in DDR-related genes, such as somatic or germline mutations, single nucleotide polymorphisms (SNPs), and promoter methylation, are closely related to the occurrence, development, and treatment of head and neck squamous cell carcinoma (HNSCC). Despite recent advances in surgery combined with radiotherapy, chemotherapy, or immunotherapy, there has been no substantial improvement in the survival rate of patients with HNSCC. Therefore, targeting DNA repair pathways may be a promising treatment for HNSCC. In this review, we summarized the sources of DNA damage and DNA damage repair pathways. Further, the role of DNA damage repair pathways in the development of HNSCC and the application of small molecule inhibitors targeting these pathways in the treatment of HNSCC were focused.
Insights
DNA damage response (DDR) pathways are crucial for genome integrity. Targeting DDR defects offers a promising therapeutic strategy for head and neck squamous cell carcinoma (HNSCC) treatment.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Cells constantly face DNA damage from internal and external sources.
- The DNA damage response (DDR) is essential for repairing DNA and maintaining genome stability.
- Defects in DDR pathways are linked to various diseases, including cancer.
Purpose of the Study:
- To review DNA damage sources and repair pathways.
- To elucidate the role of DDR in head and neck squamous cell carcinoma (HNSCC) development.
- To explore the therapeutic potential of targeting DDR in HNSCC.
Main Methods:
- Literature review of DNA damage and repair mechanisms.
- Analysis of DDR gene alterations (mutations, SNPs, methylation) in HNSCC.
- Examination of small molecule inhibitors targeting DDR pathways.
Main Results:
- Alterations in DDR genes are associated with HNSCC occurrence, progression, and treatment response.
- Current HNSCC treatments show limited survival improvement.
- Targeting DDR pathways presents a potential therapeutic avenue for HNSCC.
Conclusions:
- Understanding DDR pathways is critical for HNSCC research.
- Targeting DDR offers a promising strategy to improve HNSCC patient outcomes.
- Further investigation into DDR inhibitors is warranted for HNSCC therapy.
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