Newly developed primary culture of rat visceral adipocytes and their in vitro characteristics.
We have recently developed a primary culture system for visceral adipocytes (VAs) using stomal-vascular cells (SVCs) isolated from the mesenteric fat tissue of male Sprague-Dawley rats of 3-5 weeks of age. Modified Dulbecco's modified Eagle medium (DMEM)/F12 containing 17 microM pantothenic acid, 33 microM biotin, 100 microM ascorbic acid, 1 microM octanoic acid, 50 nM triiodothyronine, 10 microg/ml insulin, 10% newborn calf serum (NCS), 100 units/ml penicillin and 100 microg/ml streptomycin was used as a basal culture medium, which did not contain any synthetic compounds usually used to promote adipogenesis, such as indomethacin, dexamethasone, or peroxisome proliferator-activated receptor (PPAR)-gamma agonists. The SVCs differentiated and proliferated efficiently, and formed a confluent monolayer in 3 days. The VAs accumulated lipids droplets in their cytoplasm at approximately 7 days. The differentiation rate from applied SVCs to mature adipocytes was >80% per culture. Adiponectin concentration in the medium increased from Day 5 to Day 7. Application of lipid emulsion stimulated maturation of the SVCs into VAs, as well as subsequent lipid accumulation. Norepinephrine (2 x 10(-5) mM) reduced the size of lipid particles and decreased triglyceride (TG) content in the matured adipocytes at 30 min. These results indicate that the new culture system is sufficient to maintain the physiological activity of visceral adipose tissue similar to that in vivo, making it an appropriate and useful tool for basic and applied research on obesity.
Shimizu
Kyoko
K
Center for Advanced Science and Technology 306, Primary Cell Co. Ltd., Hokkaido University, Kita-21 Nishi-11, Sapporo, Hokkaido 001-0021, Japan.
Sakai
Masato
M
Ando
Mamiko
M
Chiji
Hideyuki
H
Kawada
Teruo
T
Mineo
Hitoshi
H
Taira
Toshio
T
D017667:Adipocytes / Q000166:cytology* / Q000187:drug effects; D052242:Adiponectin / Q000096:biosynthesis; D000818:Animals; D018929:Cell Culture Techniques / Q000379:methods*; D002454:Cell Differentiation / Q000187:drug effects; D002478:Cells, Cultured; D008643:Mesentery / Q000166:cytology; D009638:Norepinephrine / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley; D013997:Time Factors; D014280:Triglycerides / Q000378:metabolism
D052242:Adiponectin; D014280:Triglycerides; D009638:Norepinephrine