Abstract
Glucose homeostasis is crucial for neuronal survival, synaptic plasticity, and is indispensable for learning and memory. Reduced sensitivity of cells to insulin and impaired insulin signaling in brain neurons participate in the pathogenesis of Alzheimer disease (AD). The tumor suppressor protein p53 coordinates with multiple cellular pathways in response to DNA damage and cellular stresses. However, prolonged stress conditions unveil deleterious effects of p53-evoked insulin resistance in neurons; enhancement of transcription of pro-oxidant factors, accumulation of toxic metabolites (e.g. ceramide and products of advanced glycation) and ROS-modified cellular components, together with the activation of proapoptotic genes, could finally induce a suicide death program of autophagy/apoptosis in neurons. Recent studies reveal the impact of p53 on expression and processing of several microRNAs (miRs) under DNA damage-inducing conditions. Additionally, the role of miRs in promotion of insulin resistance and type 2 diabetes mellitus has been well documented. Detailed recognition of the role of p53/miRs crosstalk in driving insulin resistance in AD brains could improve the disease diagnostics and aid future therapy.
Keywords: Alzheimer disease, Insulin resistance, microRNAs, p53 protein, ROS.
Current Topics in Medicinal Chemistry
Title:Insulin Resistance in Alzheimer Disease: p53 and MicroRNAs as Important Players
Volume: 17 Issue: 12
Author(s): Kazimierz Gasiorowski, Barbara Brokos, Jerzy Leszek, Vadim V. Tarasov, Ghulam Md Ashraf and Gjumrakch Aliev
Affiliation:
Keywords: Alzheimer disease, Insulin resistance, microRNAs, p53 protein, ROS.
Abstract: Glucose homeostasis is crucial for neuronal survival, synaptic plasticity, and is indispensable for learning and memory. Reduced sensitivity of cells to insulin and impaired insulin signaling in brain neurons participate in the pathogenesis of Alzheimer disease (AD). The tumor suppressor protein p53 coordinates with multiple cellular pathways in response to DNA damage and cellular stresses. However, prolonged stress conditions unveil deleterious effects of p53-evoked insulin resistance in neurons; enhancement of transcription of pro-oxidant factors, accumulation of toxic metabolites (e.g. ceramide and products of advanced glycation) and ROS-modified cellular components, together with the activation of proapoptotic genes, could finally induce a suicide death program of autophagy/apoptosis in neurons. Recent studies reveal the impact of p53 on expression and processing of several microRNAs (miRs) under DNA damage-inducing conditions. Additionally, the role of miRs in promotion of insulin resistance and type 2 diabetes mellitus has been well documented. Detailed recognition of the role of p53/miRs crosstalk in driving insulin resistance in AD brains could improve the disease diagnostics and aid future therapy.
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Cite this article as:
Gasiorowski Kazimierz, Brokos Barbara, Leszek Jerzy, Tarasov V. Vadim, Ashraf Md Ghulam and Aliev Gjumrakch, Insulin Resistance in Alzheimer Disease: p53 and MicroRNAs as Important Players, Current Topics in Medicinal Chemistry 2017; 17 (12) . https://dx.doi.org/10.2174/1568026617666170103161233
DOI https://dx.doi.org/10.2174/1568026617666170103161233 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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