KEAP1/NRF2 signaling pathway mutations in cervical cancer

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• The KEAP1/NRF2 signaling pathway is crucial for cellular response to oxidative stress.
• Dysregulation of this pathway is implicated in various cancers.

Purpose of the Study:

• To investigate mutations in the KEAP1 and NRF2 genes within the KEAP1/NRF2 signaling pathway in Chinese cervical cancer patients.
• To identify novel mutations and assess their potential role in cervical cancer pathogenesis.

Main Methods:

• Analysis of coding exons and intron-exon boundaries of KEAP1 and NRF2 genes.
• Mutation screening in 236 Chinese patients with various cervical cancer subtypes.
• In silico prediction of pathogenicity using PolyPhen-2 and MutationTaster.

Main Results:

• Six pathogenic mutations (1 KEAP1, 5 NRF2) were identified in 187 patients with cervical squamous cell carcinoma.
• A novel KEAP1 mutation (p.R470C) and three NRF2 mutations (p.D29Y, p.D77A, p.G81D) were reported in cervical cancer for the first time.
• No mutations were detected in adenosquamous carcinomas or adenocarcinomas.

Conclusions:

• The KEAP1/NRF2 signaling pathway may play a significant role in the pathogenesis of cervical squamous cell carcinoma.
• The identification of novel mutations highlights the importance of this pathway in cervical cancer development.