Small molecules enhance functional O-mannosylation of Alpha-dystroglycan
摘要:
Alpha-dystroglycan (alpha-DG), a highly glycosylated receptor for extracellular matrix proteins, plays a critical role in many biological processes. Hypoglycosylation of alpha-DG results in various types of muscular dystrophies and is also highly associated with progression of majority of cancers. Currently, there are no effective treatments for those devastating diseases. Enhancing functional O-mannosyl glycans (FOG) of alpha-DG on the cell surfaces is a potential approach to address this unmet challenge. Based on the hypothesis that the cells can up-regulate FOG of alpha-DG in response to certain chemical stimuli, we developed a cell-based high-throughput screening (HTS) platform for searching chemical enhancers of FOG of alpha-DG from a large chemical library with 364,168 compounds. Sequential validation of the hits from a primary screening campaign and chemical works led to identification of a cluster of compounds that positively modulate FOG of alpha-DG on various cell surfaces including patient-derived myoblasts. These compounds enhance FOG of alpha-DG by almost ten folds, which provide us powerful tools for O-mannosylation studies and potential starting points for the development of drug to treat dystroglycanopathy. (c) 2015 Elsevier Ltd. All rights reserved.
Second-Generation Non-Covalent NAAA Inhibitors are Protective in a Model of Multiple Sclerosis
作者:Marco Migliore、Silvia Pontis、Angel Luis Fuentes de Arriba、Natalia Realini、Esther Torrente、Andrea Armirotti、Elisa Romeo、Simona Di Martino、Debora Russo、Daniela Pizzirani、Maria Summa、Massimiliano Lanfranco、Giuliana Ottonello、Perrine Busquet、Kwang-Mook Jung、Miguel Garcia-Guzman、Roger Heim、Rita Scarpelli、Daniele Piomelli
DOI:10.1002/anie.201603746
日期:2016.9.5
intracellular cysteine amidase, N‐acylethanolamine acid amidase (NAAA). Even though NAAA may offer a new target for anti‐inflammatory therapy, the lipid‐like structures and reactive warheads of current NAAAinhibitors limit the use of these agents as oral drugs. A series of novel benzothiazole–piperazine derivatives that inhibitNAAA in a potent and selective manner by a non‐covalent mechanism are
Small-compound enhancers for functional O-mannosylation of alpha-dystroglycan, and uses thereof
申请人:Wu Xiaohua
公开号:US10221168B1
公开(公告)日:2019-03-05
The present invention provides compounds that can enhance functional O-mannosylation of proteins including alpha-dystroglycan. Also provided are methods of preparation of the compounds defined by the formula I. Also provided are the methods of using the compounds or the pharmaceutical acceptable salts or prodrugs thereof in treating and preventing subjects suffering from the diseases including muscular dystrophies and cancers.
[EN] PIPERAZINYL METHANONE NAAA INHIBITORS<br/>[FR] INHIBITEURS DE PIPÉRAZINYL MÉTHANONE NAAA
申请人:UNIV CALIFORNIA
公开号:WO2017201103A1
公开(公告)日:2017-11-23
Disclosed herein, inter alia, are compositions and methods for modulating the activity of N-acylethanolamine acid amidase for the treatment of a pathological state, including pain, an inflammatory condition, or a neurodegenerative disorder.
HETEROARYL DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS
申请人:Knust Henner
公开号:US20090163485A1
公开(公告)日:2009-06-25
The present invention relates to compounds of formula
wherein
Ar, Het, R
1
and n are as defined herein and to pharmaceutically suitable acid addition salts, optically pure enantiomers, racemates or diastereomeric mixtures thereof. Compounds of formula I are orexin receptor antagonists and are useful in the treatment of sleep apnea, narcolepsy, insomnia, parasomnia, jet lag syndrome, circadian rhythms disorder and sleep disorders associated with neurological diseases.
A convenient synthesis of 2-mercapto and 2-chlorobenzothiazoles
作者:Lei Zhu、Mingbao Zhang、Miao Dai
DOI:10.1002/jhet.5570420440
日期:2005.5
A convenientsynthesis of 2-mercapto and 2-chlorobenzothiazoles is described. The key feature of the synthesis is an exclusive ortho-selective nucleophilic aromatic substitution reaction of ortho-haloanilines with potassium/sodium O-ethyl dithiocarbonate under mild conditions. Subsequent intra-molecular cycliza-tion affords 2-mercaptobenzothiazoles in high yields. The 2-mercaptobenzothiazoles are readily