Novel insights into adipose tissue heterogeneity

Area of Science:

• Cell Biology
• Metabolic Science
• Genomics

Background:

• Adipose tissue, primarily adipocytes, regulates systemic metabolism.
• Non-adipocyte cells in the stromal vascular fraction (SVF) numerically dominate adipose tissue.
• Adipose tissue's role in metabolic diseases makes it a therapeutic target.

Purpose of the Study:

• To review current knowledge on adipose tissue cell composition and heterogeneity.
• To highlight the significance of intra-tissue cell diversity in adipose tissue function.
• To discuss the implications of single-cell RNA sequencing in understanding adipose tissue.

Main Methods:

• Review of recent high-resolution single-cell/nucleus RNA sequencing data.
• Analysis of adipose tissue cell composition and heterogeneity.
• Discussion of technical limitations in current sequencing technologies.

Main Results:

• Adipose tissue exhibits profound cellular diversity in both adipocytes and SVF cells across depots.
• The numerical prevalence of SVF cells suggests a significant role in adipose tissue function.
• Limited data currently demonstrates the importance of cell composition in shaping tissue functionality.

Conclusions:

• Establishing adipose tissue cell atlases is crucial for understanding its biological relevance.
• Further research is needed to elucidate the functional implications of cellular heterogeneity and plasticity.
• Addressing technical limitations in single-cell sequencing is essential for advancing adipose tissue research.