SMND-309 is a metabolite of salvianolic acid B. It also shows neuroprotective effects in cultured neurons and in permanent middle cerebralarteryocclusion rats.
KUS121 is a valosin-containing protein (VCP) modulator that inhibits VCP ATPase activity (IC50= 330 nM).1It inhibits cell death, ATP depletion, and upregulation of C/EBP-homologous protein (CHOP) induced by tunicamycin, an inducer of ER stress, in HeLa cells when used at concentrations of 20, 50, and 50 μM, respectively. KUS121 (100 μM) inhibits ATP depletion and cell death induced by oxygen-glucose deprivation (OGD) in rat primary cortical neurons in anin vitromodel of cerebral ischemia.2It reduces infarction volume and increases the latency to fall in an accelerating rotarod test in a mouse model of focal cerebral ischemia induced by transient distal middle cerebralarteryocclusion (MCAO) when administered at a dose of 100 mg/kg immediately following occlusion and again at 50 mg/kg following reperfusion. KUS121 (50 mg/kg) inhibits thinning of the retinal outer nuclear layer and preserves visual function in an rd10 mouse model of retinitis pigmentosa.1 1.Ikeda, H.O., Sasaoka, N., Koike, M., et al.Novel VCP modulators mitigate major pathologies of rd10, a mouse model of retinitis pigmentosaSci. Rep.45970(2014) 2.Kinoshita, H., Maki, T., Yasuda, K., et al.KUS121, a valosin-containing protein modulator, attenuates ischemic stroke via preventing ATP depletionSci. Rep.9(1)11519(2019)
Gambogic amide acts as a potent and selective agonist for TrkA, promoting tyrosine phosphorylation and activating downstream signaling pathways such as Akt and MAPK. It specifically binds to the cytoplasmic juxtamembrane domain of the TrkA receptor, stimulating dimerization and activation. The compound demonstrates neuroprotective properties by preventing neuronal cell death caused by glutamate. Additionally, gambogic amide shows enhanced efficacy in a transient middle cerebralarteryocclusion model of stroke and may be useful for investigating neurodegenerative diseases and stroke [1].