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Epigallocatechin Gallate (EGCG) and Rutin Suppress the Glucotoxicity through Activating IRS2 and AMPK Signaling in Rat Pancreatic β Cells
Abstract
Pancreatic beta cell failure is one critical metabolic disorder in the development of type 2 diabetes. Decreased viability and dysfunction of beta cells would accelerate the diabetic pathogenesis associated with higher mortality. In this study, the tea polyphenol EGCG (epigallocatechin gallate) and the buckwheat flavonoid Rutin were investigated to attenuate the induced glucotoxicity in beta cells. EGCG and Rutin could preserve the insulin secretory machinery and stimulate insulin receptor substrate 2 (IRS2) signaling in rat pancreatic beta cells, RIN-m5F. These findings further demonstrated the reduced glucolipotoxic effects of EGCG and Rutin through activating AMP-activated protein kinase (AMPK) signaling to inhibit the activities of lipogenic enzymes and ameliorating mitochondrial function. Consequently, the cell viability was retained after attenuating the glucotoxicity through the broad effect of EGCG and Rutin. The intrinsic protective effects of EGCG and Rutin in preserving the insulin signaling and regulating lipogenesis, manipulating cell cycling, and maintaining mitochondrial function to achieve the integrity of beta cells, which highlight the possibilities of EGCG and Rutin as novel strategies for the prevention of type 2 diabetes.
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Citations
Cited by
Impact of Dietary Polyphenols on Carbohydrate Metabolism
Hanhineva, K., Törrönen, R., Bondia-Pons, I., Pekkinen, J., Kolehmainen, M., Mykkänen, H., & Poutanen, K. (2010) · International Journal of Molecular Sciences · doi:10.3390/ijms11041365 · Cited by 1,157
Molecular Mechanisms of the Anti-Obesity and Anti-Diabetic Properties of Flavonoids
Kawser Hossain, M., Abdal Dayem, A., Han, J., Yin, Y., Kim, K., Kumar Saha, S., Yang, G.-M., Choi, H., & Cho, S.-G. (2016) · International Journal of Molecular Sciences · doi:10.3390/ijms17040569 · Cited by 495
Natural products for the treatment of type 2 diabetes mellitus: Pharmacology and mechanisms
Xu, L., Li, Y., Dai, Y., & Peng, J. (2018) · Pharmacological Research · doi:10.1016/j.phrs.2018.01.015 · Cited by 452
Healthy Effects of Plant Polyphenols: Molecular Mechanisms
Leri, M., Scuto, M., Ontario, M. L., Calabrese, V., Calabrese, E. J., Bucciantini, M., & Stefani, M. (2020) · International Journal of Molecular Sciences · doi:10.3390/ijms21041250 · Cited by 435
Shen, C., Jiang, J., Yang, L., Wang, D., & Zhu, W. (2017) · British Journal of Pharmacology · doi:10.1111/bph.13631 · Cited by 344
Metadata
- Authors
- Cai, E. P., & Lin, J.-K.
- Venue
- Journal of Agricultural and Food Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-10-28
- Volume
- 57
- Issue
- 20
- Pages
- 9817-9827
- ISSN
- 0021-8561 (ISSN-L)
- 1520-5118
- OpenAlex
- W2076998598
- Cited by
- 163
- References
- 0
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Epigallocatechin Gallate (EGCG) and Rutin Suppress the Glucotoxicity through Activating IRS2 and AMPK Signaling in Rat Pancreatic β Cells. https://app.cochat.ai/papers/10.1021/jf902618v
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- Cai, E. P., & Lin, J.-K. (2009). Epigallocatechin Gallate (EGCG) and Rutin Suppress the Glucotoxicity through Activating IRS2 and AMPK Signaling in Rat Pancreatic β Cells. Journal of Agricultural and Food Chemistry. https://doi.org/10.1021/jf902618v
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