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Open AccessJournal ArticleDOI

SIRT1 and SIRT2: emerging targets in neurodegeneration.

TLDR
The role of SIRT1 in neuronal differentiation due to the possible implications in neurodegenerative conditions is covered, and an outlook on the potential therapeutic value of Sirt1 and SIRT2 in these disorders is concluded.
Abstract
Sirtuins are NAD-dependent protein deacetylases known to have protective effects against age-related diseases such as cancer, diabetes, cardiovascular and neurodegenerative diseases. In mammals, there are seven sirtuins (SIRT1-7), which display diversity in subcellular localization and function. While SIRT1 has been extensively investigated due to its initial connection with lifespan extension and involvement in calorie restriction, important biological and therapeutic roles of other sirtuins have only recently been recognized. Here, we review the potential roles and effects of SIRT1 and SIRT2 in neurodegenerative diseases. We discuss different functions and targets of SIRT1 and SIRT2 in a variety of neurodegenerative diseases including Alzheimer's disease (AD), Parkinson's disease (PD) and Huntington's Disease (HD). We also cover the role of SIRT1 in neuronal differentiation due to the possible implications in neurodegenerative conditions, and conclude with an outlook on the potential therapeutic value of SIRT1 and SIRT2 in these disorders.

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Journal ArticleDOI

Sirtuin activators and inhibitors : Promises, achievements, and challenges

TL;DR: Progress in understanding the mechanisms of Sirtuin modulation by such compounds provides a rational basis for further drug development.
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The glucagon-like peptide 1 (GLP) receptor as a therapeutic target in Parkinson's disease: mechanisms of action.

TL;DR: The molecular mechanisms underlying the neuroprotective effects of GLP-1 analogues in the laboratory and their potential therapeutic utility with particular relevance to PD and PD dementia (PDD) are reviewed.
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Chemically Induced Degradation of Sirtuin 2 (Sirt2) by a Proteolysis Targeting Chimera (PROTAC) Based on Sirtuin Rearranging Ligands (SirReals)

TL;DR: This SirReal-based PROTAC is the first example of a probe that is able to chemically induce the degradation of an epigenetic eraser protein and can be readily adapted to alkynylated ligands of other targets.
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Emerging Role of Sirtuin 2 in the Regulation of Mammalian Metabolism

TL;DR: The role of SIRT2 in inflammation and oxidative stress due to the possible implications for metabolic disorders is covered, and its potential as a therapeutic target for the prevention and treatment of type 2 diabetes is considered.
Journal ArticleDOI

Longevity and skeletal muscle mass: the role of IGF signalling, the sirtuins, dietary restriction and protein intake

TL;DR: This paradox will be assessed and considered in the light of the following: the genetic knockout, overexpression and pharmacological models that induce lifespan extension versus the important role of these signalling pathways in SkM growth and adaptation.
References
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Journal ArticleDOI

Alpha-synuclein in Lewy bodies.

TL;DR: Strong staining of Lewy bodies from idiopathic Parkinson's disease with antibodies for α-synuclein, a presynaptic protein of unknown function which is mutated in some familial cases of the disease, indicates that the LewY bodies from these two diseases may have identical compositions.
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Modulation of NF-κB-dependent transcription and cell survival by the SIRT1 deacetylase

TL;DR: It is demonstrated that SIRT1, a nicotinamide adenosine dinucleotide‐dependent histone deacetylase, regulates the transcriptional activity of NF‐κB and activity augments apoptosis in response to TNFα.
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The SIR2/3/4 complex and SIR2 alone promote longevity in Saccharomyces cerevisiae by two different mechanisms

TL;DR: It is shown that life span regulation by the Sir proteins is independent of their role in nonhomologous end joining, and increasing the gene dosage extends the life span in wild-type cells.
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Increased dosage of a sir-2 gene extends lifespan in Caenorhabditis elegans

TL;DR: In this paper, the lifespan of C. elegans strains containing duplications of chromosomal regions was surveyed and it was shown that a duplication containing sir-2.1-the SIR2 gene most homologous to yeast-confers a lifespan that is extended by up to 50%.
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Calorie restriction promotes mammalian cell survival by inducing the SIRT1 deacetylase.

TL;DR: It is shown that expression of mammalian Sir2 (SIRT1) is induced in CR rats as well as in human cells that are treated with serum from these animals, suggesting that CR could extend life-span by inducing SIRT1 expression and promoting the long-term survival of irreplaceable cells.
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