Journal of Medicinal Chemistry p. 893 - 907 (2019)
Update date:2022-08-31
Topics:
Tangherlini, Giovanni
Kalinin, Dmitrii V.
Schepmann, Dirk
Che, Tao
Mykicki, Nadine
St?nder, Sonja
Loser, Karin
Wünsch, Bernhard
Neuroinflammatory disorders, such as multiple sclerosis or experimental autoimmune encephalomyelitis (EAE), an established mouse model mimicking part of the human pathology, are characterized by inflammatory infiltrates containing T helper 1 (TH1) and TH17 cells, which cause demyelination and neurodegeneration. Disease onset and perpetuation are mediated by peripherally generated autoreactive T cells infiltrating into the central nervous system, where they are restimulated by antigen-presenting cells. Here, we show that newly designed peripherally active, potent, and selective κ-opioid receptor (KOR) agonists comprising the ethylenediamine KOR pharmacophore in a perhydroquinoxaline scaffold exhibit potent anti-inflammatory capacities in primary antigen presenting cells as well as T cells. In the EAE model, the secondary amine 12 and the triazole 14 were able to ameliorate disease severity and to delay disease onset by blocking effector T cell activation. Importantly, the beneficial effects were mediated via signaling through KOR because off-target effects were excluded by using KOR-deficient mouse mutants.
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