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Published on: May 24, 2024
Prostanoid receptor EP2 as a therapeutic target
1Department of Pharmacology, Emory University School of Medicine , 1510 Clifton Road, Atlanta, Georgia, 30322, United States.
Abstract:
Cycoloxygenase-2 (COX-2) induction is prevalent in a variety of (brain and peripheral) injury models where COX-2 levels correlate with disease progression. Thus, COX-2 has been widely explored for anti-inflammatory therapy with COX-2 inhibitors, which proved to be effective in reducing the pain and inflammation in patients with arthritis and menstrual cramps, but they have not provided any benefit to patients with chronic inflammatory neurodegenerative disease. Recently, two COX-2 drugs, rofecoxib and valdecoxib, were withdrawn from the United States market due to cardiovascular side effects. Thus, future anti-inflammatory therapy could be targeted through a specific prostanoid receptor downstream of COX-2. The PGE2 receptor EP2 is emerging as a pro-inflammatory target in a variety of CNS and peripheral diseases. Here we highlight the latest developments on the role of EP2 in diseases, mechanism of activation, and small molecule discovery targeted either to enhance or to block the function of this receptor.
Insights
Cyclooxygenase-2 (COX-2) inhibitors are ineffective for neurodegenerative diseases and carry cardiovascular risks. Targeting the downstream prostaglandin E2 receptor EP2 offers a new therapeutic avenue for inflammation.
Area of Science:
- Neuroinflammation
- Molecular Biology
- Drug Discovery
Background:
- Cyclooxygenase-2 (COX-2) is upregulated in various injury models, correlating with disease progression.
- COX-2 inhibitors show efficacy in pain and inflammation (arthritis, menstrual cramps) but fail in chronic neurodegenerative diseases.
- Cardiovascular side effects led to the withdrawal of rofecoxib and valdecoxib, necessitating alternative anti-inflammatory strategies.
Purpose of the Study:
- To explore the prostaglandin E2 receptor EP2 as a novel therapeutic target for inflammatory diseases.
- To review the role of EP2 in central nervous system (CNS) and peripheral diseases.
- To discuss EP2 activation mechanisms and small molecule discovery for modulating its function.
Main Methods:
- Literature review focusing on the role of EP2 in disease pathogenesis.
- Analysis of EP2 activation pathways and signaling.
- Overview of small molecule development targeting EP2 for therapeutic intervention.
Main Results:
- The EP2 receptor is implicated as a pro-inflammatory mediator in diverse CNS and peripheral conditions.
- Understanding EP2's mechanism of action is crucial for developing targeted therapies.
- Small molecules are being developed to either enhance or block EP2 function.
Conclusions:
- Targeting EP2 downstream of COX-2 represents a promising strategy for future anti-inflammatory therapies.
- Modulating EP2 offers potential benefits for chronic inflammatory and neurodegenerative diseases.
- Further research into EP2-targeted therapeutics is warranted.
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