Polo like kinase 1 expression in cervical cancer tissues generated from multiple detection methods.

Area of Science:

• Oncology
• Molecular Biology
• Biomarker Discovery

Background:

• Previous studies on PLK1 in cervical cancer had limitations in methodology and comprehensive clinical significance evaluation.
• There is a need for a thorough investigation into PLK1 expression and its role in cervical cancer progression.

Purpose of the Study:

• To comprehensively evaluate the clinico-pathological significance of PLK1 expression in cervical cancer.
• To investigate PLK1 overexpression and its correlation with patient survival and clinical progression in cervical cancer.

Main Methods:

• Utilized immunohistochemistry on 303 cervical tissue samples to assess PLK1 expression in cancer versus non-cancer tissues.
• Analyzed PLK1 expression, survival data, gene mutations, and alterations using databases like Expression Atlas, COSMIC, and cBioPortal.
• Performed functional enrichment analysis on PLK1-correlated genes to identify associated pathways.

Main Results:

• Confirmed significant PLK1 overexpression in cervical squamous cell carcinoma, cervical adenocarcinoma, and overall cervical cancer samples.
• Demonstrated PLK1 expression's strong ability to differentiate cervical cancer from non-cancerous tissues (AUC = 0.94).
• Found that higher PLK1 expression correlated with shorter event-free survival in cervical cancer patients (HR = 2.020, P = 0.0197).

Conclusions:

• Provided robust evidence for PLK1 overexpression in cervical cancer.
• PLK1's overexpression and its contribution to clinical progression suggest its potential as a valuable biomarker for cervical cancer.