Abstract
Yeast vacuoles contain various hydrolytic enzymes including lipase. They play important roles in intracellular signaling and metabolism. Using these characteristics, the aim of this study is to determine effects of yeast vacuoles on the triglyceride accumulation and differentiation of pre-adipocytes to adipocytes using 3T3-L1 cells. The accumulation of lipid droplets and triglyceride were reduced after treatment with vacuoles. As a result of not maintaining the expression of C/EBPβ and C/EBPδ in vacuole-treated adipocytes, expression levels of C/EBPα and PPARγ in vacuole-treated adipocytes were significantly reduced. The expression of adiponectin in the late differentiation stage was increased compared to that in the control. By confirming that vacuolar enzymes also inhibit differentiation of adipocytes same as vacuoles, it can be concluded that the adipogenesis inhibitory effect of vacuoles is by lipase of vacuolar enzymes. Yeast-derived vacuoles could be an important source for inhibiting accumulation of lipids and obesity-related inflammation by suppressing adipogenesis.
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