MLi-2 MLi-2 is an orally active and highly selective inhibitor of LRRK2 . MLi-2 exhibits exceptional potency in a purified LRRK2 kinase assay in vitro with IC50 of 0.76 nM, a cellular assay monitoring dephosphorylation of LRRK2 pSer935 LRRK2 with IC50 o In vitro
MLi-2 is a structurally novel, highly potent, and selective LRRK2 kinase inhibitor with central nervous system activity. MLi-2 exhibits exceptional potency in a purified LRRK2 kinase assay in vitro (IC50 = 0.76 nM), a cellular assay monitoring dephosphorylation of LRRK2 pSer935 LRRK2 (IC50 = 1.4 nM), and a radioligand competition binding assay (IC50 = 3.4 nM). MLi-2 has greater than 295-fold selectivity for over 300 kinases in addition to a diverse panel of receptors and ion channels.
In vivo
Acute oral and subchronic dosing in MLi-2 mice resulted in dosedependent central and peripheral target inhibition over a 24-hour period as measured by dephosphorylation of pSer935 LRRK2. Treatment of MitoPark mice with MLi-2 is well tolerated over a 15-week period at brain and plasma exposures >100× the in vivo plasma IC50 for LRRK2 kinase inhibition as measured by pSer935 dephosphorylation. Morphologic changes in the lung, consistent with enlarged type II pneumocytes, are observed in MLi-2-treated MitoPark mice. Cell Data
cell lines：U87-MG, T98G, and U373-MG
Concentrations：10 serial 3-fold dilutions, top concentration 5 μM
