Modeling Adipocyte Insulin Resistance Using Mouse Subcutaneous Adipose Tissue-derived Stromal Vascular Fraction.
Mengyao Wan1, Shuo Jiang2, Xiaodi Liang3
1State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Key Laboratory of Molecular Biology for Endemic Diseases, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinjiang Medical University.
Journal of Visualized Experiments : Jove
|April 13, 2026
Summary
This study presents a new method for modeling insulin resistance in primary fat cells, offering a more accurate system for studying metabolic disorders like type 2 diabetes.
Area of Science:
- Metabolic Physiology
- Adipose Tissue Biology
- Cellular Models
Background:
- Insulin resistance in adipose tissue is key to metabolic disorders like type 2 diabetes.
- Existing in vitro models using cell lines do not fully represent native adipose tissue complexity.
- A need exists for more physiologically relevant models to study adipocyte insulin resistance.
Purpose of the Study:
- To develop a reproducible protocol for modeling adipocyte insulin resistance using primary adipocytes.
- To establish a method that better reflects adipose tissue physiology compared to traditional cell lines.
- To provide a platform for studying insulin signaling mechanisms and evaluating metabolic interventions.
Main Methods:
- Isolation of stromal vascular fraction (SVF) cells from mouse subcutaneous adipose tissue via enzymatic digestion.
- Adipogenic differentiation of SVF cells into mature adipocytes.
- Induction of insulin resistance using dexamethasone and validation through functional and molecular assays.
Main Results:
- Reduced insulin-stimulated glucose uptake and consumption in induced insulin-resistant adipocytes.
- Decreased phosphorylation of key proteins in the PI3K-AKT insulin signaling pathway.
- The model retains SVF-derived cellular heterogeneity, approximating in vivo conditions.
Conclusions:
- This primary-cell-based protocol offers a more physiologically relevant system for studying adipocyte insulin resistance.
- The method allows for investigation of adipocyte insulin signaling and metabolic interventions.
- The model's readouts reflect mixed SVF-derived cultures, providing insights into complex adipose tissue responses.
