Development of a Mitochondrial Permeability Transition-Driven Necrosis-Related Prognostic Signature in Cervical...

Area of Science:

• Oncology
• Molecular Biology
• Genomics

Background:

• Cervical cancer (CC) is a heterogeneous malignancy with poorly understood prognostic factors.
• Mitochondrial permeability transition (MPT)-driven necrosis is a potential therapeutic target in cancer.

Purpose of the Study:

• To develop a novel prognostic signature for cervical cancer based on MPT-driven necrosis-related genes.
• To improve the prediction and prognosis of cervical cancer.

Main Methods:

• Utilized multiple transcriptome datasets (GSE63514, TCGA-CESC, etc.) to identify differentially expressed MPT-driven necrosis-related genes (DE-MRGs).
• Developed a prognostic model using regression analyses and validated it independently.
• Performed immune infiltration, enrichment, and cell communication analyses.
• Validated molecular mechanisms using qRT-PCR and functional assays.

Main Results:

• Identified 156 DE-MRGs and established a three-gene prognostic signature (ICOS, MMP3, POSTN).
• The risk score was an independent prognostic factor for CC, with a validated nomogram.
• The signature correlated with immune processes like antigen processing and presentation and immune cell infiltration (M0 macrophages, CD8 T cells).
• Knockdown of MMP3 and POSTN significantly reduced CC cell growth and migration.

Conclusions:

• A novel prognostic risk signature for cervical cancer based on ICOS, MMP3, and POSTN was developed.
• MMP3 and POSTN show potential as therapeutic targets due to their role in CC cell growth and migration.