Cerebral ischemia/reperfusion (I/R) injury is a key reason
for
the poor prognosis of ischemic stroke. As only a few neuroprotective
medications for cerebral I/R injury have been applied in the clinic,
it is necessary to design a new therapeutic strategy to treat cerebral
I/R injury. The N-salicyloyl tryptamine derivative
LZWL02003, synthesized from melatonin and salicylic acid, exhibits
a wide range of biological properties. In this study, we assessed
the neuroprotective capabilities of LZWL02003 in vivo and in vitro
and investigated its possible mechanisms. Oxygen-glucose deprivation/reoxygenation
was utilized to create an in vitro model of cerebral I/R damage. Middle
cerebral artery occlusion/reperfusion was employed to imitate cerebral
I/R injury in vivo. Neuronal apoptosis, oxidative stress, mitochondrial
dysfunction, and neuroinflammation are associated with the pathogenesis
of cerebral I/R injury. Our findings demonstrated that LZWL02003 upregulated
the expression of Bcl-2 and downregulated the expression of Bax, thus
maintaining the homeostasis of Bcl-2/Bax proteins and preventing apoptosis.
LZWL02003 also reduced oxidative stress by reducing malondialdehyde
and reactive oxygen species levels, increasing the superoxide dismutase
activity, and resolving mitochondrial malfunction. LZWL02003 can lower
interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and
IL-6 levels, which in turn suppress neuroinflammation. Activation
of the nuclear factor-kappa B (NF-κB) pathway is involved in
various pathophysiologies, including cerebral I/R injury. We discovered
that LZWL02003 suppressed the phosphorylation activation of NF-κB
pathway-related proteins and decreased the nuclear translocation of
NF-κB p65 subunits. Taken together, our results suggest that
LZWL02003 is a neuroprotective drug with pleiotropic effects and may
be a candidate for treating cerebral I/R injury.