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Article Publish Status: FREE
Abstract Title:

Coenzyme Q10 suppresses apoptosis of mouse pancreaticβ-cell line MIN6.

Abstract Source:

Diabetol Metab Syndr. 2018 ;10:47. Epub 2018 Jun 14. PMID: 29942356

Abstract Author(s):

Keisuke Sumi, Tsuyoshi Okura, Youhei Fujioka, Masahiko Kato, Takeshi Imamura, Shin-Ichi Taniguchi, Kazuhiro Yamamoto

Article Affiliation:

Keisuke Sumi

Abstract:

Background: In mitochondrial diabetes, apoptosis ofβ-cells caused by mitochondrial stress plays an important role in impaired insulin secretion. Several studies have reported that coenzyme Q10 (CoQ10) has therapeutic effects on mitochondrial diabetes, but no reports have examined the fundamental effectiveness or mechanism of CoQ10 in mitochondrialdiabetes. We previously reported in a Japanese article that CoQ10 has protective effects on pancreatic β-cells against mitochondrial stress using mouse pancreatic β-cell line MIN6 and staurosporine (STS). Here, we report that CoQ10 protects MIN6 cells against apoptosis caused by STS and describe the more detailed apoptotic cascade.

Methods: Apoptosis of MIN6 cells was induced by 0.5 µM STS treatment for specific periods with or without 30 μM CoQ10. The apoptosis cascade in MIN6 cells was then investigated using WST-8 assays, annexin-V staining, western blotting, and DNA degradation analysis.

Results: Sixteen hours of 0.5 μM STS treatment led to 47% cell viability, but pretreatment with 30 μM CoQ10 resulted in significantly higher viability of 76% (P < 0.01). CoQ10 also prevented translocation of phosphatidylserine from the inner leaflet to the outer leaflet of the cell membrane. CoQ10 prevented cytochrome c release from mitochondria and activation of caspase-3.

Conclusion: We concluded that CoQ10 protects pancreaticβ-cells through anti-apoptotic effects against STS treatment.

Study Type : In Vitro Study

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