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Target intelligence / Profile preview
Phosphodiesterase 4 Isoform (PDE4)
- Target
- PDE4
- Molecular classification
- Enzyme, Phosphodiesterase
01
Overview
Phosphodiesterase 4 (PDE4) isoforms are a family of enzymes that specifically hydrolyze cyclic adenosine monophosphate (cAMP), a key second messenger involved in regulating numerous physiological processes. PDE4 isoforms are widely expressed and play essential roles in inflammation regulation, neuroprotection, and metabolism. The PDE4 family consists of four genes: PDE4A, PDE4B, PDE4C, and PDE4D, each producing multiple isoforms with unique N-terminal regions that determine their specific subcellular localization. Different isoforms have distinct regulatory properties, including phosphorylation-dependent modulation and dimerization. PDE4 is a target for anti-inflammatory and immunomodulatory drugs, but current inhibitors lack subtype selectivity, leading to potential side effects.
- Other names
- PDE IVcAMP-specific phosphodiesterase 4
02
Mechanism of action
Inhibition of cAMP hydrolysis, increasing intracellular cAMP levels.
03
Biological functions
cAMP hydrolysisSignal transductionRegulation of inflammationNeuroprotectionMetabolism
04
Disease associations
AsthmaChronic inflammatory diseasesNeurodegenerative diseaseCardiovascular disease
05
Safety considerations
Non-selective PDE4 inhibitors can cause side effects due to broad suppression of immune/inflammatory responses.
06
Interacting drugs
PDE4 inhibitors
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