Quality Control in Huntington's Disease: a Therapeutic Target.

Abstract:

:Huntington's disease (HD) is a fatal autosomal dominantly inherited brain disease caused by excessively expanded CAG repeats in gene which encodes huntingtin protein. These abnormally encoded huntingtin proteins and their truncated fragments result in disruption of cellular quality mechanism ultimately triggering neuronal death. Despite great efforts, a potential causative agent leading to genetic mutation in HTT, manifesting the neurons more prone to oxidative stress, cellular inflammation, energy depletion and apoptotic death, has not been established yet. Current scenario concentrates on symptomatic pathologies to improvise the disease progression and to better the survival. Most of the therapeutic developments have been converged to rescue the protein homeostasis. In HD, abnormal expansion of glutamine repeats in the protein huntingtin leads to toxic aggregation of huntingtin which in turn impairs the quality control mechanism of cells through damaging the machineries involved in removal of aggregated abnormal protein. Therapeutic approaches to improve the efficiency of aggregate clearance through quality control mechanisms involve protein folding machineries such as chaperones and protein degradation machineries such as proteasome and autophagy. Also, to reduce protein aggregation by enhancing proper folding, to degrade and eliminate the aggregates are suggested to negatively regulate the HD progression associated with the disruption of protein homeostasis. This review focuses on the collection of therapeutic strategies targeting enhancement of protein quality control activity to delay the HD pathogenesis.

journal_name

Neurotox Res

journal_title

Neurotoxicity research

authors

Rai SN,Singh BK,Rathore AS,Zahra W,Keswani C,Birla H,Singh SS,Dilnashin H,Singh SP

doi

10.1007/s12640-019-00087-x

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

612-626

issue

3

eissn

1029-8428

issn

1476-3524

pii

10.1007/s12640-019-00087-x

journal_volume

36

pub_type

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