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Published on: April 16, 2018
Thioredoxin-1 is a novel and attractive therapeutic approach for various diseases including cardiovascular disorders
Ludivine Billiet1, Mustapha Rouis
1UMR 7079 / Université Pierre et Marie Curie-Paris 6, Physiologie et Physiopathologie, Bât. A. 5eme étage/Case courrier 256, 7, Quai St-Bernard, 75252 Paris Cedex 5, France.
Abstract:
The regulation of cellular reduction/oxidation (redox) balance is critically determined by several antioxidant systems such as the thioredoxin-1 (Trx-1) which reduces disulfides on targeted proteins. In addition, intracellular Trx-1 exerts most of its antioxidant properties through scavenging of reactive oxygen species. Moreover, it acts as a cofactor for several enzymes and plays an important role in the regulation of redox-sensitive transcription factors. Several studies have reported that Trx-1 activity can be modulated by the interaction with vitamin D3-upregulated protein (VDUP-1) (also called Txnip for thioredoxin interacting protein-1 or TBP-2 for Trx-binding protein-2). Trx-1 secretion has been reported to occur in conditions associated with oxidative stress and inflammation. Beneficial effects of elevated plasma Trx-1 levels on various pathologies were reported in mice. In conclusion, oxidative stress is an important actor in various pathologies including cardio- and cerebro-vascular diseases. Therefore, controlling the redox status by increasing the activity of Trx-1 seems to be a novel and an attractive approach.
Insights
Thioredoxin-1 (Trx-1) is a key antioxidant regulating cellular redox balance and protecting against oxidative stress. Increasing Trx-1 activity offers a promising therapeutic strategy for various diseases.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Medicine
Background:
- Cellular reduction/oxidation (redox) balance is crucial for cellular function.
- Thioredoxin-1 (Trx-1) is a primary antioxidant system involved in redox homeostasis.
- Trx-1 regulates protein function, scavenges reactive oxygen species, and modulates transcription factors.
Purpose of the Study:
- To highlight the critical role of Trx-1 in maintaining cellular redox balance.
- To explore the regulatory interactions of Trx-1, including its modulation by VDUP-1/Txnip.
- To discuss the potential of Trx-1 as a therapeutic target for oxidative stress-related pathologies.
Main Methods:
- Literature review on Trx-1 function and regulation.
- Analysis of studies investigating Trx-1 activity in various physiological and pathological conditions.
- Examination of the relationship between Trx-1, VDUP-1/Txnip, and oxidative stress.
Main Results:
- Trx-1 plays a multifaceted role in antioxidant defense and redox regulation.
- Trx-1 activity is modulated by interactions with VDUP-1 (Txnip).
- Elevated plasma Trx-1 levels show beneficial effects in preclinical models of disease.
Conclusions:
- Oxidative stress is implicated in major pathologies like cardiovascular and cerebrovascular diseases.
- Modulating Trx-1 activity represents a novel and attractive therapeutic approach.
- Enhancing Trx-1 function could be a valuable strategy for treating diseases associated with redox imbalance.
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