scholarly journals Evaluation of Histone Deacetylases as Drug Targets in Huntington’s Disease modelsStudy of HDACs in brain tissues from R6/2 and CAG140 knock-in HD mouse models and human patients and in a neuronal HD cell model.

PLoS Currents ◽  
2010 ◽  
Vol 2 ◽  
pp. RRN1172 ◽  
Author(s):  
Luisa Quinti ◽  
Vanita Chopra ◽  
Dante Rotili ◽  
Sergio Valente ◽  
Allison Amore ◽  
...  
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Mouse Models ◽  
Histone Deacetylases ◽  
Drug Targets ◽  
Cell Model ◽  
Brain Tissues

scholarly journals The Novel Alpha-2 Adrenoceptor Inhibitor Beditin Reduces Cytotoxicity and Huntingtin Aggregates in Cell Models of Huntington’s Disease

2021 ◽  
Vol 14 (3) ◽  
pp. 257
Author(s):  
Elisabeth Singer ◽  
Lilit Hunanyan ◽  
Magda M. Melkonyan ◽  
Jonasz J. Weber ◽  
Lusine Danielyan ◽  
...  
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Neurodegenerative Disorder ◽  
Cell Model ◽  
Resonance Energy Transfer ◽  
Neuronal Cell ◽  
Resonance Energy ◽  
Terminal Deoxynucleotidyl Transferase ◽  
Tunel Staining ◽  
Cell Models

Huntington’s disease (HD) is a monogenetic neurodegenerative disorder characterized by the accumulation of polyglutamine-expanded huntingtin (mHTT). There is currently no cure, and therefore disease-slowing remedies are sought to alleviate symptoms of the multifaceted disorder. Encouraging findings in Alzheimer’s and Parkinson’s disease on alpha-2 adrenoceptor (α2-AR) inhibition have shown neuroprotective and aggregation-reducing effects in cell and animal models. Here, we analyzed the effect of beditin, a novel α2- adrenoceptor (AR) antagonist, on cell viability and mHTT protein levels in cell models of HD using Western blot, time-resolved Foerster resonance energy transfer (TR-FRET), lactate dehydrogenase (LDH) and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) cytotoxicity assays. Beditin decreases cytotoxicity, as measured by TUNEL staining and LDH release, in a neuronal progenitor cell model (STHdh cells) of HD and decreases the aggregation propensity of HTT exon 1 fragments in an overexpression model using human embryonic kidney (HEK) 293T cells. α2-AR is a promising therapeutic target for further characterization in HD models. Our data allow us to suggest beditin as a valuable candidate for the pharmaceutical manipulation of α2-AR, as it is capable of modulating neuronal cell survival and the level of mHTT.

scholarly journals Embryonic Mutant Huntingtin Aggregate Formation in Mouse Models of Huntington’s Disease

2016 ◽  
Vol 5 (4) ◽  
pp. 343-346 ◽  
Author(s):  
Alexander P. Osmand ◽  
Terry Jo. Bichell ◽  
Aaron B. Bowman ◽  
Gillian P. Bates
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Mouse Models ◽  
Mutant Huntingtin ◽  
Aggregate Formation

scholarly journals The Sirtuin 2 Inhibitor AK-7 Is Neuroprotective in Huntington’s Disease Mouse Models

Cell Reports ◽  
2012 ◽  
Vol 2 (6) ◽  
pp. 1492-1497 ◽  
Author(s):  
Vanita Chopra ◽  
Luisa Quinti ◽  
Jinho Kim ◽  
Lorraine Vollor ◽  
K. Lakshmi Narayanan ◽  
...  
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Mouse Models

scholarly journals Dysfunctions in circadian behavior and physiology in mouse models of Huntington's disease

2011 ◽  
Vol 228 (1) ◽  
pp. 80-90 ◽  
Author(s):  
Takashi Kudo ◽  
Analyne Schroeder ◽  
Dawn H. Loh ◽  
Dika Kuljis ◽  
Maria C. Jordan ◽  
...  
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Mouse Models ◽  
Circadian Behavior

scholarly journals Calcium Handling by Endoplasmic Reticulum and Mitochondria in a Cell Model of Huntington’s Disease

PLoS Currents ◽  
2016 ◽  
Author(s):  
Agnese De Mario ◽  
Chiara Scarlatti ◽  
Veronica Costiniti ◽  
Simona Primerano ◽  
Raffaele Lopreiato ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Cell Model ◽  
Calcium Handling ◽  
A Cell

scholarly journals Skeletal muscle regeneration is altered in the R6/2 mouse model of Huntington's disease

2022 ◽  
Author(s):  
Sanzana Hoque ◽  
Marie Sjogren ◽  
Valerie Allamand ◽  
Kinga Gawlik ◽  
Naomi Franke ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Muscle Damage ◽  
Satellite Cell ◽  
Mouse Models ◽  
Satellite Cells ◽  
Muscle Fibers ◽  
Cag Repeat ◽  
Skeletal Muscle Regeneration

Huntington's disease (HD) is caused by CAG repeat expansion in the huntingtin (HTT) gene. Skeletal muscle wasting alongside central pathology is a well-recognized phenomenon seen in patients with HD and HD mouse models. HD muscle atrophy progresses with disease and affects prognosis and quality of life. Satellite cells, progenitors of mature skeletal muscle fibers, are essential for proliferation, differentiation, and repair of muscle tissue in response to muscle injury or exercise. In this study, we aim to investigate the effect of mutant HTT on the differentiation and regeneration capacity of HD muscle by employing in vitro mononuclear skeletal muscle cell isolation and in vivo acute muscle damage model in R6/2 mice. We found that, similar to R6/2 adult mice, neonatal R6/2 mice also exhibit a significant reduction in myofiber width and morphological changes in gastrocnemius and soleus muscles compared to WT mice. Cardiotoxin (CTX)-induced acute muscle damage in R6/2 and WT mice showed that the Pax7+ satellite cell pool was dampened in R6/2 mice at 4 weeks post-injection, and R6/2 mice exhibited an altered inflammatory profile in response to acute damage. Our results suggest that, in addition to the mutant HTT degenerative effects in mature muscle fibers, expression of mutant HTT in satellite cells might alter developmental and regenerative processes to contribute to the progressive muscle mass loss in HD. Taken together, the results presented here encourage further studies evaluating the underlying mechanisms of satellite cell dysfunction in HD mouse models.

scholarly journals Juvenile Huntington’s Disease and Other PolyQ Diseases, Update on Neurodevelopmental Character and Comparative Bioinformatic Review of Transcriptomic and Proteomic Data

2021 ◽  
Vol 9 ◽  
Author(s):  
Karolina Świtońska-Kurkowska ◽  
Bart Krist ◽  
Joanna Delimata ◽  
Maciej Figiel
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Mouse Models ◽  
Muscular Atrophy ◽  
Expression Patterns ◽  
Cag Repeat ◽  
Human Cognition ◽  
Expression Data ◽  
Neuronal Stem Cell ◽  
Polyq Diseases

Polyglutamine (PolyQ) diseases are neurodegenerative disorders caused by the CAG repeat expansion mutation in affected genes resulting in toxic proteins containing a long chain of glutamines. There are nine PolyQ diseases: Huntington’s disease (HD), spinocerebellar ataxias (types 1, 2, 3, 6, 7, and 17), dentatorubral-pallidoluysian atrophy (DRPLA), and spinal bulbar muscular atrophy (SBMA). In general, longer CAG expansions and longer glutamine tracts lead to earlier disease presentations in PolyQ patients. Rarely, cases of extremely long expansions are identified for PolyQ diseases, and they consistently lead to juvenile or sometimes very severe infantile-onset polyQ syndromes. In apparent contrast to the very long CAG tracts, shorter CAGs and PolyQs in proteins seems to be the evolutionary factor enhancing human cognition. Therefore, polyQ tracts in proteins can be modifiers of brain development and disease drivers, which contribute neurodevelopmental phenotypes in juvenile- and adult-onset PolyQ diseases. Therefore we performed a bioinformatics review of published RNAseq polyQ expression data resulting from the presence of polyQ genes in search of neurodevelopmental expression patterns and comparison between diseases. The expression data were collected from cell types reflecting stages of development such as iPSC, neuronal stem cell, neurons, but also the adult patients and models for PolyQ disease. In addition, we extended our bioinformatic transcriptomic analysis by proteomics data. We identified a group of 13 commonly downregulated genes and proteins in HD mouse models. Our comparative bioinformatic review highlighted several (neuro)developmental pathways and genes identified within PolyQ diseases and mouse models responsible for neural growth, synaptogenesis, and synaptic plasticity.

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