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TDP-43 in the spectrum of MND-FTLD pathologies
Lanier Heyburn1, Charbel E-H Moussa2
1Department of Neurology, Translational Neurotherapeutics Program, Laboratory for Dementia and Parkinsonism, Georgetown University Medical Center, Washington D.C. 20007, USA; Department of Pathology, Georgetown University Medical Center, Washington D.C., USA 20007.
Abstract:
The relationship between RNA-binding proteins, particularly TAR DNA binding protein 43 (TDP-43), and neurodegeneration is an important area of research. TDP-43 is involved in so many cellular processes that perturbation of protein homeostasis can lead to countless downstream effects. Understanding what leads to this disease-related protein imbalance and the resulting cellular and molecular effects will help to develop targets for disease intervention, whether it be prevention of protein accumulation, or addressing a secondary effect of protein accumulation. Here we review the current literature of TDP-43 and TDP-43 pathologies, the effects of TDP-43 overexpression and disruption of synaptic proteins through its binding of messenger RNA, leading to synaptic dysfunction. This review highlights some of the still-limited knowledge of the protein TDP-43 and how it can contribute to disease.
Insights
Investigating TAR DNA binding protein 43 (TDP-43) in neurodegeneration reveals its role in protein imbalance and synaptic dysfunction. Understanding TDP-43
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- TAR DNA binding protein 43 (TDP-43) is an RNA-binding protein implicated in neurodegenerative diseases.
- Perturbations in TDP-43 function can disrupt cellular homeostasis, leading to widespread downstream effects.
- Understanding these disruptions is crucial for developing therapeutic interventions.
Purpose of the Study:
- To review the current literature on TDP-43 and its associated pathologies.
- To explore the consequences of TDP-43 overexpression and its impact on synaptic function.
- To highlight existing knowledge gaps regarding TDP-43's contribution to disease.
Main Methods:
- Literature review of existing studies on TDP-43.
- Analysis of research on TDP-43 pathologies and overexpression.
- Examination of studies detailing TDP-43's role in messenger RNA binding and synaptic protein disruption.
Main Results:
- TDP-43 plays a critical role in numerous cellular processes.
- Overexpression or dysfunction of TDP-43 can lead to significant cellular imbalances.
- TDP-43 binding to messenger RNA contributes to the disruption of synaptic proteins and subsequent synaptic dysfunction.
Conclusions:
- TDP-43 dysfunction is a key factor in neurodegeneration.
- Further research is needed to fully elucidate TDP-43's complex role in disease pathogenesis.
- Targeting TDP-43 pathways may offer therapeutic strategies for neurodegenerative conditions.
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