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Dual Specificity Protein Phosphatase 1 (DUSP1)
- Target
- DUSP1
- Molecular classification
- Enzyme, Protein Phosphatase, Dual-Specificity Phosphatase, Mitogen-Activated Protein Kinase Phosphatase (MKP)
01
Overview
Dual specificity protein phosphatase 1 (DUSP1), also known as MAP kinase phosphatase-1 (MKP-1), is an enzyme that dephosphorylates both tyrosine and serine/threonine residues on target proteins, particularly MAP kinases (ERKs, JNK, and p38). DUSP1 plays a critical role in regulating cellular responses to environmental stress and inflammation by terminating MAPK signaling cascades involved in cell proliferation, differentiation, apoptosis, and immune responses. It is a key negative regulator of inflammation and mediates the anti-inflammatory effects of glucocorticoids.
- Other names
- MAP kinase phosphatase-1MKP-1
02
Mechanism of action
Dephosphorylation and inactivation of MAP kinases (ERK, JNK, p38)
03
Biological functions
Signal transductionNegative regulation of MAPK signalingRegulation of inflammationCell proliferationCell differentiationApoptosisImmune response
04
Disease associations
InflammationAutoimmune diseasesCancerSepsis
05
Safety considerations
Modulation of DUSP1 could have broad effects on MAPK signaling pathwaysPotential for off-target effects due to the widespread role of MAPKs
06
Interacting drugs
Glucocorticoids
07
Biomarkers
DUSP1 expression levels as indicator of inflammatory statusDUSP1 expression levels as indicator of glucocorticoid responsiveness
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