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논문 기본 정보

자료유형
학술저널
저자정보
Feiyan Chen (Nanjing University of Chinese Medicine) Kexuan Zhu (Nanjing University of Chinese Medicine) Lin Chen (Nanjing University of Chinese Medicine) Liufeng Ouyang (Nanjing University of Chinese Medicine) Cuihua Chen (Nanjing University of Chinese Medicine) Ling Gu (Nanjing University of Chinese Medicine) Yucui Jiang (Nanjing University of Chinese Medicine) Zhongli Wang (Jiujiang University) Zixuan Lin (Nanjing University of Chinese Medicine) Qiang Zhang (Nanjing University of Chinese Medicine) Xiao Shao (Nanjing University of Chinese Medicine) Jianguo Dai (Nanjing University of Chinese Medicine) Yunan Zhao (Nanjing University of Chinese Medicine)
저널정보
고려인삼학회 Journal of Ginseng Research Journal of Ginseng Research Vol.44 No.3
발행연도
2020.5
수록면
461 - 474 (14page)

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초록· 키워드

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Background: Ginseng effectively reduces fatigue in both animal models and clinical trials. However, the mechanism of action is not completely understood, and its molecular targets remain largely unknown. Methods: By screening for proteins that interact with the primary components of ginseng (ginsenosides) in an affinity chromatography assay, we have identified muscle-type creatine kinase (CK-MM) as a potential target in skeletal muscle tissues.
Results: Biolayer interferometry analysis showed that ginsenoside metabolites, instead of parent ginsenosides, had direct interaction with recombinant human CK-MM. Subsequently, 20(S)-protopanaxadiol (PPD), which is a ginsenoside metabolite and displayed the strongest interaction with CK-MM in the study, was selected as a representative to confirm direct binding and its biological importance. Biolayer interferometry kinetics analysis and isothermal titration calorimetry assay demonstrated that PPD specifically bound to human CK-MM. Moreover, the mutation of key amino acids predicted by molecular docking decreased the affinity between PPD and CK-MM. The direct binding activated CK-MM activity in vitro and in vivo, which increased the levels of tissue phosphocreatine and strengthened the function of the creatine kinase/phosphocreatine system in skeletal muscle, thus buffering cellular ATP, delaying exercise-induced lactate accumulation, and improving exercise performance in mice.
Conclusion: Our results suggest a cellular target and an initiating molecular event by which ginseng reduces fatigue. All these findings indicate PPD as a small molecular activator of CK-MM, which can help in further developing better CK-MM activators based on the dammarane-type triterpenoid structure.

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ABSTRACT
1. Introduction
2. Methods
3. Results
4. Discussion
5. Conclusion
6. Contributors
References

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UCI(KEPA) : I410-ECN-0101-2020-524-000843053