DUSP10 alleviates ischemic stroke-induced neuronal damage by restricting p38/JNK pathway

Area of Science:

• Neuroscience
• Molecular Biology
• Pathology

Background:

• Neuronal apoptosis is a key feature of ischemic stroke.
• Dual specificity phosphatase 10 (DUSP10) regulates apoptosis.

Purpose of the Study:

• Investigate DUSP10's effect on neuronal apoptosis in oxygen-glucose deprivation/reoxygenation (OGD/R) and middle cerebral artery occlusion/reperfusion (MCAO/R) models.
• Determine DUSP10's role in the p38/JNK signaling pathway during ischemic stroke.

Main Methods:

• Primary cortical neurons subjected to OGD/R.
• Transient middle cerebral artery occlusion and reperfusion (MCAO/R) in mice.
• DUSP10 overexpression and knockdown.
• Western blotting for apoptotic proteins (cleaved caspase 3, bax, bcl-2) and phosphorylated p38/JNK.
• TUNEL staining for apoptosis.
• Nissl staining and TUNEL-NeuN double staining for neuronal damage.

Main Results:

• DUSP10 overexpression reduced apoptosis and improved neuronal survival in OGD/R models.
• DUSP10 overexpression inhibited the p38/JNK signaling pathway.
• DUSP10 knockdown exacerbated infarct volume and neuronal damage in MCAO/R models.
• DUSP10 inhibition activated the p38/JNK pathway in vivo.

Conclusions:

• DUSP10 acts as a neuroprotective agent against ischemic stroke.
• DUSP10 exerts its neuroprotective effects by suppressing the p38/JNK signaling pathway.
• Targeting DUSP10 may offer a therapeutic strategy for ischemic stroke.