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Identification of two immune subtypes and four hub immune-related genes in ovarian cancer through multiple analysis

Qin Tang1, Haojie Zhang2, Rong Tang3

  • 1Department of Obstetrics and Gynecology, The Jingmen Center Hospital, Jingmen, PR China.

Medicine
|October 6, 2023
PubMed

Insights

This study identified two ovarian cancer (OV) immune subtypes, with the high-immunity group showing better survival. Four key immune-related genes (IRGs) were discovered, offering potential therapeutic targets for OV immunotherapy.

Area of Science:

  • Oncology
  • Immunology
  • Bioinformatics

Background:

  • Ovarian cancer (OV) immunotherapy efficacy is linked to immune classification.
  • Existing studies have limited OV immune subtypes, necessitating further exploration.
  • Identifying novel immune subtypes and key immune-related genes (IRGs) is crucial for advancing OV treatment.

Purpose of the Study:

  • To classify ovarian cancer into distinct immune subtypes.
  • To identify crucial immune-related genes (IRGs) associated with OV immunity.
  • To explore the underlying mechanisms of immune evasion and potential therapeutic targets in OV.

Main Methods:

  • Utilized single-sample gene set enrichment analysis (ssGSEA) on 379 OV samples to identify immune subtypes.
  • Employed gene set variation analysis (GSVA) to explore pathway enrichment in identified subtypes.
  • Applied weighted gene co-expression network analysis (WGCNA) and Cytoscape to identify hub IRGs.

Main Results:

  • Identified two OV immune subtypes: Immunity_H (higher survival, immune score, stromal score) and Immunity_L.
  • Discovered four hub IRGs (CCR5, IL10RA, ITGAL, PTPRC), with PTPRC showing significant amplification.
  • Observed higher expression of most immune-checkpoint genes in Immunity_H; PTPRC regulates PD-L1 via JAK-STAT signaling.

Conclusions:

  • Established two distinct immune subtypes in ovarian cancer, correlating with patient survival and immune infiltration.
  • Identified four critical IRGs as potential biomarkers and therapeutic targets for OV.
  • Elucidated PTPRC's role in regulating PD-L1 expression, suggesting novel immunotherapy strategies for OV.

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