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Melatonin-sulforaphane hybrid ITH12674 attenuates glial response in vivo by blocking LPS binding to MD2 and receptor oligomerization

AuthorsMichalska, Patrycja; Buendía Abaitua, Izaskun; Duarte, Pablo; Fernández-Mendívil, Cristina; Negredo, Pilar; Cuadrado, Antonio ; López, Manuela G.; León Martínez, Rafael
Neurodegenerative diseases
MD2 antagonist
TLR4 inhibitor
Antiinflammatory properties
Issue Date2020
CitationPharmacological Research 152: 104597 (2020)
AbstractNeuroinflammation is increasingly associated to the onset and progression of neurodegenerative diseases. Furthermore, several lines of evidence have demonstrated the capacity of aberrant protein aggregates to activate the immune response, accelerating the advance of the disease. Compound ITH12674 is a melatonin-sulforaphane hybrid designed to exert a dual drug-prodrug mechanism of action that combines potent NRF2 induction and free radical scavenger activity. ITH12674 also showed neuroprotective properties in oxidative stress related models, that were dependant on its NRF2 inducing properties. Given the high impact of neuroinflammation in the pathogenesis of neurodegeneration, we foresaw to study the anti-inflammatory properties of ITH12674. ITH12674 reduced inflammatory markers in glial cell cultures and hippocampal tissue after LPS administration. The anti-inflammatory effect was related to inhibition of TLR4 receptors due to a direct interaction with the TLR4/MD2 complex at the hydrophobic cavity of MD2. ITH12674 is endowed with anti-inflammatory properties, that are complementary to the NRF2 inducing activity and neuroprotective properties. Thus, ITH12674 could be of potential interest for the treatment of diseases with chronic neuroinflammation.
Publisher version (URL)https://doi.org/10.1016/j.phrs.2019.104597
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