Isolation, Culture, and Adipogenic Induction of Stromal Vascular Fraction-derived Preadipocytes from Mouse Periaortic Adipose Tissue

Summary

Here, we describe the isolation, culture, and adipogenic induction of stromal vascular fraction-derived preadipocytes from mouse periaortic adipose tissue, allowing for the study of perivascular adipose tissue function and its relationship with vascular cells.

Abstract

Perivascular adipose tissue (PVAT) is an adipose tissue depot that surrounds blood vessels and exhibits the phenotypes of white, beige, and brown adipocytes. Recent discoveries have shed light on the central role of PVAT in regulating vascular homeostasis and participating in the pathogenesis of cardiovascular diseases. A comprehensive understanding of PVAT properties and regulation is of great importance for the development of future therapies. Primary cultures of periaortic adipocytes are valuable for studying PVAT function and the crosstalk between periaortic adipocytes and vascular cells. This paper presents an economical and feasible protocol for the isolation, culture, and adipogenic induction of stromal vascular fraction-derived preadipocytes from mouse periaortic adipose tissue, which can be useful for modeling adipogenesis or lipogenesis in vitro. The protocol outlines tissue processing and cell differentiation for culturing periaortic adipocytes from young mice. This protocol will provide the technological cornerstone at the bench side for the investigation of PVAT function.

Introduction

Perivascular adipose tissue (PVAT), a perivascular structure composed of a mixture of mature adipocytes and a stromal vascular fraction (SVF), is believed to interact with the adjacent vessel wall via its secretome paracrineally¹. As a critical regulator of vascular homeostasis, PVAT dysfunction is implicated in the pathogenesis of cardiovascular diseases^2,3,4. The SVF of adipocyte tissue consists of several expected cell populations, including endothelial cells, immune cells, mesothelium cells, neuronal cells, and adipose stem and progenitor cells (AS....

Protocol

The animal protocols were approved by the Institutional Animal Care and Use Committee at Shanghai Chest Hospital affiliated to Shanghai Jiao Tong University School of Medicine (approval number: KS23010) and were in compliance with relevant ethical regulations. Male and female C57BL/6 mice aged 4-8 weeks are to be preferred for this experiment.

1. Preparation of surgical tools, buffers, and culture media

1. Autoclave surgical tools (e.g., surgical scissors and standard.......

Discussion

We propose a practical and feasible approach for the isolation and adipogenic induction of SVF-derived preadipocytes from mouse periaortic adipose tissue. The advantages of this protocol are that it is simple and economical. Adequate numbers of mice are critical for successful isolation, as insufficient tissue can result in low SVF density and poor growth state, ultimately affecting lipogenic efficiency. Additionally, mouse age is an important factor to consider as the adipogenic potential of SVF decreases with age. Rapi.......

Materials

Name	Company	Catalog Number	Comments
0.2 μm syringe filters	PALL	4612
12-well plate	Labselect	11210
15 mL centrifuge tube	Labserv	310109003
3,3',5-triiodo-L-thyronine (T3)	Sigma-Aldrich	T-2877	1 nM
50 mL centrifuge tube	Labselect	CT-002-50A
anti-adiponectin	Abcam	ab22554	1:1,000 working concentration
anti-COX IV	CST	4850	1:1,000 working concentration
anti-FABP4	CST	2120	1:1,000 working concentration
anti-PGC1α	Abcam	ab191838	1:1,000 working concentration
anti-PPARγ	Invitrogen	MA5-14889	1:1,000 working concentration
anti-UCP1	Abcam	ab10983	1:1,000 working concentration
anti-α-Actinin	CST	6487	1:1,000 working concentration
BSA	Beyotime	ST023-200g	1%
C57BL/6 mice aged 4-8 weeks of both sexes	Shanghai Model Organisms Center, Inc.
Cell Strainer 70 µm, nylon	Falcon	352350
Collagen from calf skin	Sigma-Aldrich	C8919
Collagenase, Type 1	Worthington	LS004196	1 mg/mL
Dexamethasone	Sigma-Aldrich	D1756	1 μM
Dispase II	Sigma-Aldrich	D4693-1G	4 mg/mL
Fetal bovine serum	Gibco	16000-044	10%
HEPES	Sigma-Aldrich	H4034-25G	20 mM
High glucose DMEM	Hyclone	SH30022.01
IBMX	Sigma-Aldrich	I7018	0.5 mM
Incubator with orbital shaker	Shanghai longyue Instrument Eruipment Co.,Ltd.	LYZ-103B
Insulin (cattle)	Sigma-Aldrich	11070-73-8	1 μM
Isoflurane	RWD	R510-22-10
Krebs-Ringer's Solution	Pricella	PB180347	protect from light
Microsurgical forceps	Beyotime	FS233
Microsurgical scissor	Beyotime	FS217
Oil Red O	Sangon Biotech (Shanghai) Co., Ltd	A600395-0050
PBS (Phosphate-buffered saline)	Sangon Biotech (Shanghai) Co., Ltd	B548117-0500
Penicillin-Streptomycin	Gibco	15140122
Peroxidase AffiniPure Goat Anti-Mouse IgG (H+L)	Jackson ImmunoResearch	115-035-146	1:5,000 working concentration
Peroxidase AffiniPure Goat Anti-Rabbit IgG (H+L)	Jackson ImmunoResearch	111-035-144	1:5,000 working concentration
Rosiglitazone	Sigma-Aldrich	R2408	1 μM
Standard forceps	Beyotime	FS225
Surgical scissor	Beyotime	FS001