Single-Cell Profiling Reveals Altered Endometrial Cellular Features Across the Menstrual Cycle in Endometriosis...

Area of Science:

• Reproductive biology
• Cellular and molecular biology
• Genomics

Background:

• Endometriosis is a prevalent, estrogen-dependent condition affecting millions of women worldwide.
• Characterized by ectopic endometrial-like tissue, it causes inflammation, pain, and infertility.
• The precise pathogenesis of endometriosis remains incompletely understood.

Purpose of the Study:

• To create a comprehensive single-cell transcriptomic atlas of the eutopic endometrium in endometriosis.
• To identify novel cell subpopulations and molecular mechanisms underlying endometriosis.
• To discover potential biomarkers and therapeutic targets for endometriosis.

Main Methods:

• Single-cell RNA sequencing of 228,000 cells from 43 eutopic endometrial biopsies.
• Inclusion of patients with endometriosis, fibroid controls, and healthy controls.
• Analysis across different phases of the menstrual cycle.

Main Results:

• Identification of previously uncharacterized endometrial fibroblast and epithelial cell subpopulations.
• Discovery of epithelial-mesenchymal transition and disrupted immune cell communication networks.
• Gene expression profiling indicates oxidative stress, aberrant cell migration, and dysregulated apoptosis in endometriosis.

Conclusions:

• Endometriosis significantly alters eutopic endometrial homeostasis.
• These alterations have implications for fertility, tissue regeneration, and disease progression.
• The study provides a valuable resource for biomarker discovery and identifies potential therapeutic targets.