Emerging models for studying adipose tissue metabolism

Area of Science:

• Biochemistry
• Cell Biology
• Metabolic Research

Background:

• Adipose metabolism is key to understanding and treating obesity.
• Ethical considerations and the 3Rs (Replacement, Reduction, Refinement) drive the need for alternative research models.
• Traditional animal testing faces limitations in complexity and ethical concerns.

Purpose of the Study:

• To review diverse alternative models for analyzing adipose metabolism.
• To highlight advancements beyond traditional cell cultures.
• To assess the utility of various models in addressing obesity and related health issues.

Main Methods:

• Review of traditional adipocyte cell cultures (animal and human-derived).
• Analysis of advanced in vitro models: spheroids and organ-on-a-chip (OoC) platforms, specifically Adipose-OoC (AOoC).
• Evaluation of genetically amenable model organisms: Caenorhabditis elegans, Drosophila melanogaster, and zebrafish larvae.

Main Results:

• Traditional cell cultures offer a basic but limited view of in vivo complexity.
• Spheroids and AOoCs provide more sophisticated 3D environments for studying cell interactions and tissue functions.
• Model organisms enable high-throughput genetic manipulation and mechanistic studies of adipose tissue regulation.

Conclusions:

• A diverse range of research models, from cell cultures to OoCs and model organisms, is essential for comprehensive adipose metabolism research.
• These alternative models offer a more ethical, scientifically robust, and human-relevant approach compared to traditional animal testing.
• Leveraging these varied models advances our understanding of adipose tissue and its role in metabolic health and disease.