Multifunctional Cyclic d,l-伪-Peptide Architectures Stimulate Non-Insulin Dependent Glucose Uptake in Skeletal Muscle Cells and Protect The
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- 作者：Renana Shapira ; Safra Rudnick ; Bareket Daniel ; Olga Viskind ; Vered Aisha ; Michal Richman ; Kamesh R. Ayasolla ; Alex Perelman ; Jordan H. Chill ; Arie Gruzman ; Shai Rahimipour
- 刊名：Journal of Medicinal Chemistry
- 出版年：2013
- 出版时间：September 12, 2013
- 年：2013
- 卷：56
- 期：17
- 页码：6709-6718
- 全文大小：469K
- 年卷期：v.56,no.17(September 12, 2013)
- ISSN：1520-4804
文摘
Oxidative stress directly correlates with the early onset of vascular complications and the progression of peripheral insulin resistance in diabetes. Accordingly, exogenous antioxidants augment insulin sensitivity in type 2 diabetic patients and ameliorate its clinical signs. Herein, we explored the unique structural and functional properties of the abiotic cyclic d,l-伪-peptide architecture as a new scaffold for developing multifunctional agents to catalytically decompose ROS and stimulate glucose uptake. We showed that His-rich cyclic d,l-伪-peptide 1 is very stable under high H2O2 concentrations, effectively self-assembles to peptide nanotubes, and increases the uptake of glucose by increasing the translocation of GLUT1 and GLUT4. It also penetrates cells and protects them against oxidative stress induced under hyperglycemic conditions at a much lower concentration than 伪-lipoic acid (ALA). In vivo studies are now required to probe the mode of action and efficacy of these abiotic cyclic d,l-伪-peptides as a novel class of antihyperglycemic compounds.