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Updated: Jul 20, 2026

Isolation and Differentiation of Stromal Vascular Cells to Beige/Brite Cells
Published on: March 28, 2013
Single-Cell Landscape and a Macrophage Subset Enhancing Brown Adipocyte Function in Diabetes
Junfei Gu1,2,3, Jiajia Jin4,5,6, Xiaoyu Ren4,5,6
1Department of Endocrinology & Geriatrics, Shandong Provincial Hospital, Shandong University, Jinan, China.
Brown adipose tissue (BAT) stromal vascular fraction (SVF) shows significant changes in type 2 diabetes mellitus (T2DM) rats, revealing novel macrophage roles in regulating brown adipocyte function and metabolism.
Area of Science:
- Metabolomics
- Cell Biology
- Immunology
Background:
- Type 2 diabetes mellitus (T2DM) is characterized by metabolic dysregulation, with brown adipose tissue (BAT) abnormalities playing a key role.
- The precise cellular composition, function, and pathological significance of BAT in diabetes are not fully understood.
Purpose of the Study:
- To investigate the single-cell landscape of BAT-derived stromal vascular fraction (SVF) in T2DM rats.
- To identify characteristic alterations in BAT SVF cellular composition and function associated with T2DM.
Main Methods:
- T2DM was induced in rats using streptozotocin and a high-fat diet.
- Single-cell mRNA sequencing was employed to analyze BAT samples from T2DM and normal rats.
- Functional studies were conducted to elucidate the roles of identified cell subsets.
Main Results:
- BAT SVF in T2DM rats displayed heightened inflammation, increased angiogenesis, and disrupted glucose/lipid metabolism.
- Adipose tissue-derived stem cell differentiation potential was diminished in T2DM rats.
- A novel Rarres2+macrophage subset was identified, promoting brown adipocyte differentiation and function through crosstalk.
Conclusions:
- BAT SVF exhibits significant cellular heterogeneity and contributes to T2DM as an inflammation source.
- A novel macrophage subset was discovered that enhances brown adipocyte function, offering potential therapeutic targets.
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