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Novel Mucosal Adjuvant, mastoparan-7, Improves Cocaine Vaccine Efficacy

Novel Mucosal Adjuvant, mastoparan-7, Improves Cocaine Vaccine Efficacy

Ashley L St John, Hae Woong Choi, Q David Walker, Bruce Blough, Cynthia M Kuhn, Soman N Abraham, Herman F Staats

NPJ Vaccines. 2020 Feb 5;5:12.

PMID: 32047657

Abstract:

Cocaine is one of the most potent and addictive psychostimulants known and there are no available pharmacotherapies to treat cocaine addiction. Here we describe a novel cocaine vaccine employing the mucosal adjuvant and mast cell-activating oligopeptide, mastoparan-7 (M7), to achieve optimal IgA antibody responses in mucosal secretions and effective induction of humoral immunity using a short immunization protocol. This formulation, using a hapten-carrier system to deliver cocaine as antigen, also reduced cocaine penetration of the blood brain barrier and protected mice from its psychoactive effects by reducing cocaine-induced locomotion. Surprisingly, the magnitude of cocaine-specific antibody titers induced by each adjuvant was not the major determinant of functional protection from cocaine challenge. A side-by-side comparison of the two haptens, cocaine and its analog GNC demonstrated that cocaine haptenation resulted in superior functional protection when used in combination with the novel mucosal adjuvant, M7. These results provide a new potential strategy for combatting cocaine addiction through mucosal vaccination.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP145854597	Mastoparan-7		145854-59-7	Price

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