Intracellular lipid accumulation inhibitory effect of Weissella koreensis OK1-6 isolated from Kimchi on differentiating adipocyte

Authors

  • Y.J. Moon,

    1. Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, South Korea
    2. Jeonju Makgeolli Research Center, Chonbuk National University, Jeonju, South Korea
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  • J.R. Soh,

    1. Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, South Korea
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  • J.J. Yu,

    1. Department of Food and Biotechnology, Woosuk University, Jeonbuk, South Korea
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  • H.S. Sohn,

    1. Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, South Korea
    2. Jeonju Makgeolli Research Center, Chonbuk National University, Jeonju, South Korea
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  • Y.S. Cha,

    Corresponding author
    1. Jeonju Makgeolli Research Center, Chonbuk National University, Jeonju, South Korea
    • Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, South Korea
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  • S.H. Oh

    Corresponding author
    1. Department of Food and Biotechnology, Woosuk University, Jeonbuk, South Korea
    • Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, South Korea
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Correspondence

Youn-Soo Cha, Department of Food Science and Human Nutrition, College of Human Ecology, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 561-756, South Korea. E-mail: cha8@jbnu.ac.kr

and Suk-Heung Oh, Department of Food Science and Biotechnology, Woosuk university, 443 Samnye-ro, Samnye-eup, Wanju-gun, Jeollabuk-do, 565-701, South Korea. E-mail:shoh@woosuk.ac.kr

Abstract

Aims

To investigate the intracellular lipid accumulation inhibitory effect of spent culture medium extract and the cytoplasmic fraction of Weissella koreensis OK1-6 cells isolated from kimchi in differentiating 3T3-L1 cells.

Methods and Results

Differentiating 3T3-L1 cells were treated with either cytoplasmic fraction of W. koreensis OK1-6 cells or its spent media for 4 days. Both the spent culture medium extract and cytoplasmic fraction of W. koreensis OK1-6 cells significantly decreased the triglyceride concentration and intracellular lipid accumulation in the treated groups compared with the control group. The mRNA expression levels of C/EBP-α, one of the major transcriptional factors involved in adipocyte differentiation, were significantly less expressed in 3T3-L1 cells treated with the spent medium and cytoplasmic fraction. The expressions of aP2, fatty acid synthase (FAS) and SREBP1 genes were also decreased significantly.

Conclusions

These results suggested that Wkoreensis OK1-6 could play a crucial role in preventing intracellular lipid accumulation by down-regulating the expression of adipocyte-specific genes C/EBPα, aP2, SREBP1 and FAS.

Significance and Impact of the Study

These results may contribute to nutraceutical and food industries in developing probiotic-based therapies for the treatment and prevention of obesity.

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