Transcriptomic profile of embryoid bodies under hypoxia at single cell level

Area of Science:

• Developmental Biology
• Cellular Physiology
• Genomics

Background:

• Oxygen availability is crucial for cellular functions, with hypoxia driving key developmental processes like vasculogenesis and angiogenesis.
• Bulk transcriptomics can identify oxygen-regulated genes but lacks resolution for cellular heterogeneity in early differentiation.

Purpose of the Study:

• To investigate the impact of hypoxia on cellular heterogeneity and lineage dynamics during early embryonic development.
• To generate a single-cell transcriptomic dataset of murine embryoid bodies under varying oxygen conditions.

Main Methods:

• Murine embryoid bodies were differentiated for 8 or 10 days.
• Cells were exposed to hypoxic (1% O2) or normoxic (21% O2) conditions for the final 16 or 48 hours.
• Single-cell RNA sequencing was performed to analyze transcriptomic profiles.

Main Results:

• The generated dataset reveals how oxygen levels influence lineage specification, vascular and hematopoietic development.
• Detailed cellular heterogeneity under different oxygen conditions was observed.
• The study identified specific gene networks regulated by oxygen availability.

Conclusions:

• Single-cell transcriptomics provides a high-resolution view of oxygen's role in early development.
• This dataset serves as a valuable resource for studying hypoxia responses and developmental processes.
• The findings have implications for understanding oxygen signaling in diverse biological systems.