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Updated: Jun 8, 2026

Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro
Published on: March 17, 2023
Urokinase-type plasminogen activator receptor is associated with the development of adipose tissue
Yosuke Kanno1, Hiroyuki Matsuno, Eri Kawashita
1Department of Clinical Pathological Biochemistry, Faculty of Pharmaceutical Science, Doshisha Women’s Collage of Liberal Arts, Kyoto, Japan. ykanno@dwc.doshisha.ac.jp
Abstract:
Urokinase-type plasminogen activator receptor (uPAR) plays a role in cellular responses which include cellular adhesion, differentiation, proliferation and migration. The aim of this study was to clarify the role of uPAR on the development of adipose tissue. To clarify the role of uPAR on adipogenesis, we examined the effect of uPAR overexpression and uPAR deficiency on the adipocyte differentiation. Adipocyte differentiation was induced by incubation of 3T3-L1 cells with differentiation media containing insulin, dexamethasone, and 1-methyl-3-isobutyl-xanthin. uPAR overexpression by transfection of uPAR expression vector induced adipocyte differentiation. In addition, we examined the difference in adipocyte differentiation of mesenchymal stem cells from wild-type mice and uPAR knockout (uPAR-/-) mice. The uPAR deficiency attenuated differentiation media-induced adipocyte differentiation. Moreover, we found that the inhibition of phosphatidylinositol 3-kinase (PI3K) pathway attenuated uPAR overexpression-induced adipocyte differentiation, and uPAR overexpression induced the activation of Akt. We also found that an increase of the adipose tissue mass in uPAR-/- mice was less than that observed in wild-type mice. The present results suggest that uPAR plays a pivotal role in the development of adipose tissue through PI3K/Akt pathway.
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