Herbst DM

References (2)

Title : In situ identification of cellular drug targets in mammalian tissue - Pang_2022_Cell_185_1793
Author(s) : Pang Z , Schafroth MA , Ogasawara D , Wang Y , Nudell V , Lal NK , Yang D , Wang K , Herbst DM , Ha J , Guijas C , Blankman JL , Cravatt BF , Ye L
Ref : Cell , 185 :1793 , 2022
Abstract : The lack of tools to observe drug-target interactions at cellular resolution in intact tissue has been a major barrier to understanding in vivo drug actions. Here, we develop clearing-assisted tissue click chemistry (CATCH) to optically image covalent drug targets in intact mammalian tissues. CATCH permits specific and robust in situ fluorescence imaging of target-bound drug molecules at subcellular resolution and enables the identification of target cell types. Using well-established inhibitors of endocannabinoid hydrolases and monoamine oxidases, direct or competitive CATCH not only reveals distinct anatomical distributions and predominant cell targets of different drug compounds in the mouse brain but also uncovers unexpected differences in drug engagement across and within brain regions, reflecting rare cell types, as well as dose-dependent target shifts across tissue, cellular, and subcellular compartments that are not accessible by conventional methods. CATCH represents a valuable platform for visualizing in vivo interactions of small molecules in tissue.
ESTHER : Pang_2022_Cell_185_1793
PubMedSearch : Pang_2022_Cell_185_1793
PubMedID: 35483372

Title : Monoacylglycerol Lipase Inhibition in Human and Rodent Systems Supports Clinical Evaluation of Endocannabinoid Modulators - Clapper_2018_J.Pharmacol.Exp.Ther_367_494
Author(s) : Clapper JR , Henry CL , Niphakis MJ , Knize AM , Coppola AR , Simon GM , Ngo N , Herbst RA , Herbst DM , Reed AW , Cisar JS , Weber OD , Viader A , Alexander JP , Cunningham ML , Jones TK , Fraser IP , Grice CA , Ezekowitz RAB , O'Neill GP , Blankman JL
Ref : Journal of Pharmacology & Experimental Therapeutics , 367 :494 , 2018
Abstract : Monoacylglycerol lipase (MGLL) is the primary degradative enzyme for the endocannabinoid 2-arachidonoylglycerol (2-AG). The first MGLL inhibitors have recently entered clinical development for the treatment of neurologic disorders. To support this clinical path, we report the pharmacological characterization of the highly potent and selective MGLL inhibitor ABD-1970 [1,1,1,3,3,3-hexafluoropropan-2-yl 4-(2-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-4-chlorobenzyl)piperazine-1-carboxylate]. We used ABD-1970 to confirm the role of MGLL in human systems and to define the relationship between MGLL target engagement, brain 2-AG concentrations, and efficacy. Because MGLL contributes to arachidonic acid metabolism in a subset of rodent tissues, we further used ABD-1970 to evaluate whether selective MGLL inhibition would affect prostanoid production in several human assays known to be sensitive to cyclooxygenase inhibitors. ABD-1970 robustly elevated brain 2-AG content and displayed antinociceptive and antipruritic activity in a battery of rodent models (ED(50) values of 1-2 mg/kg). The antinociceptive effects of ABD-1970 were potentiated when combined with analgesic standards of care and occurred without overt cannabimimetic effects. ABD-1970 also blocked 2-AG hydrolysis in human brain tissue and elevated 2-AG content in human blood without affecting stimulated prostanoid production. These findings support the clinical development of MGLL inhibitors as a differentiated mechanism to treat pain and other neurologic disorders.
ESTHER : Clapper_2018_J.Pharmacol.Exp.Ther_367_494
PubMedSearch : Clapper_2018_J.Pharmacol.Exp.Ther_367_494
PubMedID: 30305428