Aricept Complexed with Acetylcholinesterase (Czech)

3D struktura léčiva Aricept (na Alzheimerovu chorobu), komplex s acetylcholinesterasou (viz též AChE bivalent inhibitors (Part II)) Úvod Několik inhibitorů cholinesteráz se buď již využívají k léčení symptomů Alzheimerovy choroby, nebo jsou v pokročilých stádiích klinických studií. E2020, označována jako Aricept, je členem velké rodiny inhibitorů acetylcholinesterázy (acetylcholinesterase) (AChE) založených na N-benzylpiperidinu. Byl vyvinut, syntetizován a ověřen japonskou firmou Eisai Company. Tyto inhibitory byly vytvořeny na základě QSAR studií provedených ještě před určením 3D struktury acetylcholinesterázy Torpedo californica (Tc AChE) (lea5). Má výrazné účinky na modelových zvířatech s cholinergickou hypofunkcí a má vysokou afinitu k AChE - váže se jak k AChE elektrického úhoře, tak myši v nanomolární koncentraci. Results The X-ray structure of the E2020-TcAChE complex shows that E2020 has a along the active-site gorge, extending from the anionic subsite () of the active site, at the bottom, to the peripheral anionic site (), at the top, via aromatic stacking interactions with conserved aromatic acid residues. E2020 does not, however, interact directly with either the catalytic triad or the 'oxyanion hole' but only . Conclusions The X-ray structure shows, a posteriori, that the design of E2020 took advantage of several important features of the active-site gorge of AChE, to produce a drug with both high affinity for AChE and a high degree of selectivity for AChE versus butyrylcholinesterase (BChE). It also delineates voids within the gorge that are not occupied by E2020 and could provide sites for potential modification of E2020 to produce drugs with improved pharmacological profiles. About this Structure 1EVE is a 1 chain structure with sequence from Torpedo californica. The June 2004 RCSB PDB Molecule of the Month feature on Acetylcholinesterase by David S. Goodsell is 10.2210/rcsb_pdb/mom_2004_6. Full crystallographic information is available from OCA. Additional Resources For additional information, see: Alzheimer's Disease

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ReferenceReference

Structure of acetylcholinesterase complexed with E2020 (Aricept): implications for the design of new anti-Alzheimer drugs., Kryger G, Silman I, Sussman JL, Structure. 1999 Mar 15;7(3):297-307. PMID:10368299

See 1eve (Chinese), 1eve (French), 1eve (Arabic), 1eve (Russian), 1eve (Spanish), & 1eve (Turkish).