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Published on: September 20, 2018
Safer anti-inflammatory therapy through dual COX-2/5-LOX inhibitors: A structure-based approach
Jaismy Jacob P1, S L Manju1, K R Ethiraj1
1Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
Abstract:
Inflammatory mediators of the arachidonic acid cascade from cyclooxygenase (COX) and lipoxygenase (LOX) pathways are primarily responsible for many diseases in human beings. Chronic inflammation is associated with the pathogenesis and progression of cancer, arthritis, autoimmune, cardiovascular and neurological diseases. Traditional non-steroidal anti-inflammatory agents (tNSAIDs) inhibit cyclooxygenase pathway non-selectively and produce gastric mucosal damage due to COX-1 inhibition and allergic reactions and bronchospasm resulting from increased leukotriene levels. 'Coxibs' which are selective COX-2 inhibitors cause adverse cardiovascular events. Inhibition of any of these biosynthetic pathways could switch the metabolism to the other, which can lead to fatal side effects. Hence, there is undoubtedly an urgent need for new anti-inflammatory agents having dual mechanism that prevent release of both prostaglandins and leukotrienes. Though several molecules have been synthesized with this objective, their unfavourable toxicity profile prevented them from being used in clinics. Here, this integrative review attempts to identify the promising pharmacophore that serves as dual inhibitors of COX-2/5-LOX enzymes with improved safety profile. A better acquaintance of structural features that balance safety and efficacy of dual inhibitors would be a different approach to the process of understanding and interpreting the designing of novel anti-inflammatory agents.
Insights
New anti-inflammatory drugs targeting both cyclooxygenase (COX) and lipoxygenase (LOX) pathways are needed to avoid side effects. This review identifies dual COX-2/5-LOX inhibitors with improved safety profiles.
Area of Science:
- Pharmacology
- Medicinal Chemistry
- Biochemistry
Background:
- Inflammation, driven by arachidonic acid metabolites from cyclooxygenase (COX) and lipoxygenase (LOX) pathways, underlies numerous diseases.
- Current anti-inflammatory drugs (NSAIDs, coxibs) have significant side effects, including gastric damage and cardiovascular events, due to non-selective or single-pathway inhibition.
- Dual inhibition of COX and LOX pathways is crucial for managing inflammation and preventing adverse effects from compensatory metabolic shifts.
Purpose of the Study:
- To identify promising pharmacophores for dual COX-2/5-LOX inhibition.
- To explore structural features that balance efficacy and safety in novel anti-inflammatory agents.
- To guide the design of new anti-inflammatory drugs with improved safety profiles.
Main Methods:
- Integrative review of existing literature on anti-inflammatory agents.
- Analysis of pharmacophore structures targeting both COX-2 and 5-LOX enzymes.
- Evaluation of safety and efficacy profiles of dual inhibitors.
Main Results:
- Identification of specific pharmacophore features suitable for dual COX-2/5-LOX inhibition.
- Understanding of structural requirements for balancing anti-inflammatory efficacy with reduced toxicity.
- Highlighting the potential of dual inhibitors as a safer therapeutic strategy.
Conclusions:
- Dual COX-2/5-LOX inhibitors represent a promising avenue for developing safer and more effective anti-inflammatory therapies.
- Further research into the structural nuances of these inhibitors can lead to optimized drug design.
- Addressing the limitations of current anti-inflammatory treatments necessitates the development of agents with dual inhibitory mechanisms.
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