A Conjugate Vaccine Using Enantiopure Hapten Imparts Superior Nicotine-Binding Capacity
摘要:
A leading nicotine conjugate vaccine was only efficacious for one-third of clinical trial participants, likely due in part to its use of racemic nicotine hapten, (+/-)-3'-AmNic. Immunization of male Wistar rats with (+)-, (-)-, or (+/-)-3'-AmNicSucTT and subsequent antibody immunoassays suggest that a vaccine using enantiopure (-)-3'-AmNic hapten imparts superior capacity to bind (-)-nicotine. Future nicotine vaccine clinical candidates must incorporate this design consideration (i.e., hapten enantiopurity) in order to maximize efficacy.
[EN] ENANTIOPURE HAPTENS FOR NICOTINE VACCINE DEVELOPMENT<br/>[FR] HAPTÈNES ÉNANTIOPURS POUR DÉVELOPPER DES VACCINS CONTRE LA NICOTINE
申请人:SCRIPPS RESEARCH INST
公开号:WO2015179403A1
公开(公告)日:2015-11-26
The invention provides chiral haptens (-)-3'-AmNic and (-)-N4N for use in generating antibodies in a patient specific for (-)-nicotine. The haptens can be conjugated to suitable carrier proteins and administered as an antigenic mixture, optionally comprising adjuvant(s), to a patient suffering from nicotine or tobacco addiction or habituation.
A high yielding and short process for preparing the 3′-aminomethylnicotine hapten of general formula I
permits the isolation of the hapten in very pure quantities. The process can be adapted for the synthesis of a single stereoisomer or mixtures of stereoisomers, such as the stereoisomers trans-Ia and trans-Ib:
Compounds of general formula I are useful for the preparation of hapten-carrier conjugates in the treatment of nicotine addiction.
ENANTIOPURE HAPTENS FOR NICOTINE VACCINE DEVELOPMENT
申请人:THE SCRIPPS RESEARCH INSTITUTE
公开号:US20170107275A1
公开(公告)日:2017-04-20
The invention provides chiral haptens (−)-3′-AmNic and (−)-N4N for use in generating antibodies in a patient specific for (−)-nicotine. The haptens can be conjugated to suitable carrier proteins and administered as an antigenic mixture, optionally comprising adjuvant(s), to a patient suffering from nicotine or tobacco addiction or habituation.