A high-throughput RNA sequency of peripheral blood mononuclear cells reveals on inflammatory state in women with PCOS.

Arch Med Res

Department of Obstetrics and Gynaecology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia. Electronic address:

Published: December 2024

AI Article Synopsis

  • - The study investigates the gene expression profiles of peripheral blood mononuclear cells (PBMCs) in women with polycystic ovary syndrome (PCOS) compared to healthy controls, using RNA sequencing and validation methods.
  • - Researchers found 186 differentially expressed genes, with notable upregulation of AQP9, PROK2, and S100A12 in women with PCOS, which could serve as noninvasive diagnostic biomarkers for the condition.
  • - The findings suggest that PCOS may be tied to chronic inflammation and highlight potential avenues for improving women's fertility through targeted treatments based on identified biomarkers.

Article Abstract

Background: Polycystic ovary syndrome (PCOS) is an endocrine and reproductive condition affecting women of reproductive age, although its expression profiles and molecular pathways are not fully understood.

Aims: To identify the transcriptome expression profiles of peripheral blood mononuclear cells (PBMCs) in women with PCOS and controls. To investigate noninvasive diagnostic biomarkers and potential treatment targets to improve women's fertility.

Methods: RNA sequencing (RNA-Seq) was conducted on PBMC samples from six patients with PCOS and six healthy controls. qRT-PCR validation was carried out in 68 subjects. Multivariate logistic regression was performed to assess the combined impact of biomarkers.

Results: A total of 186 differentially expressed genes (DEG) were found between patients and controls (logFC >1, p < 0.05). Enrichment analysis revealed cytokine-mediated signaling pathways, cytokine activity, and cytokine-cytokine receptor interaction. RNA sequencing showed consistency with qRT-PCR. Women with PCOS had significantly higher levels of AQP9 (p < 0.001), PROK2 (p = 0.001), and S100A12 (p < 0.001) expression compared to controls. AQP9 (AUC = 0.77), PROK2 (AUC = 0.71), and S100A12 (AUC = 0.82) adequately discriminated women with PCOS from healthy controls. In addition, multiple logistic regression on biomarkers resulted in a significant diagnostic power with an AUC = 0.89, 95 % CI: 0.81-0.97, p < 0.0001. Further associations were analyzed between relative gene expression and clinical, anthropometric, hormonal, and ultrasonographic data.

Conclusions: Dysregulated RNA expression in PBMCs may contribute to an increased risk of PCOS and serve as a potential diagnostic biomarker. The involvement of inflammatory and cytokine-related pathways supports the notion that PCOS is a chronic inflammatory condition.

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Source
http://dx.doi.org/10.1016/j.arcmed.2024.103129DOI Listing

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