Understanding metabolic plasticity at single cell resolution

Area of Science:

• Biochemistry
• Cell Biology
• Metabolomics

Background:

• Cellular metabolic function exhibits significant heterogeneity, extending beyond tissue-specific differences to variations within tissues and even individual cell types.
• Understanding the sources and detection of this metabolic variation is crucial for advancing cell biology and disease research.

Purpose of the Study:

• To explore the diverse origins of cellular metabolic heterogeneity, focusing on central carbon metabolism.
• To review and compare methodologies for detecting metabolic variation at the single-cell level.
• To highlight the utility of biosensors in conjunction with metabolic perturbations for revealing cellular metabolic differences.

Main Methods:

• Review of literature on cellular metabolism and heterogeneity.
• Discussion of single-cell metabolomics and RNA-sequencing techniques.
• Focus on biosensors for AMP-activated protein kinase (AMPK) and central carbon metabolites.

Main Results:

• Cellular metabolic function varies due to multiple intrinsic and extrinsic factors, including cell cycle, circadian rhythms, and metabolic cycles.
• Single-cell metabolomics and RNA-sequencing are powerful tools for detecting metabolic heterogeneity.
• Biosensors, particularly for AMPK and key metabolites, combined with perturbations, provide direct evidence of metabolic variance.

Conclusions:

• Cellular metabolic heterogeneity is a widespread phenomenon driven by various biological rhythms and cycles.
• Advanced single-cell analytical techniques are essential for characterizing metabolic differences.
• Targeted biosensor development and application offer critical insights into cellular metabolic dynamics.