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Updated: Jun 18, 2026
Isolated Pancreatic Islet Treatment and Apoptosis Measurement
Published on: May 2, 2025
Compound K protects MIN6N8 pancreatic beta-cells against palmitate-induced apoptosis through modulating SAPK/JNK
Kyong Kim1, Dong-Hyun Kim, Hye Young Kim
1Functional Food Technology Research Group, Research Division for Emerging Innovative Technology, Korea Food Research Institute, 516 Baekhyun-dong, Bundang-gu, Songnam-si, Kyonggi-do 463-746, Republic of Korea.
Abstract:
Chronic elevation of NEFAs (non-esterified fatty acids) due to insulin resistance and obesity has been shown to be associated with increased beta-cell apoptosis and with the aetiology of the reduced beta-cell mass of Type 2 diabetes. SAPK (stress-activated protein kinase)/JNK (c-Jun N-terminal kinase) have been implicated in the control of apoptosis. C-K [compound K; 20-O-beta-D-glucopyranosyl-20(S)-protopanaxadiol] is the main intestinal bacterial metabolite of protopanaxadiol ginsenosides. Currently, little is known about the effects of C-K on beta-cells with the presence of NEFAs. The aim of the present study was to investigate the in vitro protective effect of C-K on MIN6N8 mouse insulinoma beta-cells against NEFA-induced apoptosis, as well as the modulating effect on SAPK/JNK activation. Our results have shown that C-K inhibited the palmitate-induced apoptosis through modulating SAPK/JNK activation. We conclude that C-K protects against beta-cell death and that, by anti-apoptotic activity, C-K may contribute to the previously reported anti-diabetic actions of ginseng.
Insights
Compound K (C-K) protects mouse insulinoma beta-cells from non-esterified fatty acid (NEFA)-induced apoptosis by modulating stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) activation, suggesting a role in diabetes treatment.
Area of Science:
- Endocrinology
- Cell Biology
- Metabolic Disease Research
Background:
- Chronic elevation of non-esterified fatty acids (NEFAs) is linked to beta-cell apoptosis and reduced beta-cell mass in Type 2 diabetes.
- Stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) pathways are implicated in controlling apoptosis.
Purpose of the Study:
- To investigate the in vitro protective effects of Compound K (C-K) on mouse insulinoma beta-cells against NEFA-induced apoptosis.
- To determine C-K's effect on SAPK/JNK activation in the context of NEFA exposure.
Main Methods:
- Utilized MIN6N8 mouse insulinoma beta-cells.
- Exposed cells to NEFAs (palmitate) with and without C-K treatment.
- Assessed apoptosis and SAPK/JNK activation pathways.
Main Results:
- C-K significantly inhibited palmitate-induced apoptosis in beta-cells.
- C-K modulated the activation of SAPK/JNK pathways.
Conclusions:
- C-K demonstrates a protective effect against beta-cell death induced by NEFAs.
- C-K's anti-apoptotic activity may contribute to the anti-diabetic properties of ginseng.
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