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ISSN: 2157-7560

Journal of Vaccines & Vaccination
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Research Article

LEAPS Therapeutic Vaccines as Antigen Specific Suppressors of Inflammation in Infectious and Autoimmune Diseases

Daniel H Zimmerman1*, Harold Steiner Ⅲ1, Roy Carmabula1, Eyal Talor1 and Ken S Rosenthal2

1CEL-SCI Corporation 8229 Boone Blvd suite 802 Vienna, VA 22182, USA

2Integrative Medical Sciences, NEOMED State Road 44, Rootstown, Ohio, 44272, USA

*Corresponding Author:
Daniel H Zimmerman
CEL-SCI Corporation 8229 Boone Blvd suite 802 Vienna
VA 22182, USA
E-mail: [email protected]

Received date: August 16, 2012; Accepted date: September 20, 2012; Published date: September 20, 2012

Citation: Zimmerman DH, Steiner HⅢ, Carmabula R, Talor E, Rosenthal KS (2012) LEAPS Therapeutic Vaccines as Antigen Specific Suppressors of Inflammation in Infectious and Autoimmune Diseases. J Vaccines Vaccin 3:149. doi:10.4172/2157-7560.1000149

Copyright: © 2012 Zimmerman DH, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


The L.E.A.P.S.™ (Ligand Epitope antigen presentation system) technology platform has been used to develop immunoprotective and immunomodulating small peptide vaccines for infectious and autoimmune diseases. Several products are currently in various stages of development, at the pre-clinical stage (in animal challenge efficacy studies). Vaccine peptides can elicit protection of animals from lethal viral (herpes simplex virus [HSV-1] and influenza A) infection or can block the progression of autoimmune diseases (e.g. rheumatoid arthritis as in the collagen induced arthritis model (CIA] or experimental autoimmune myocarditis (EAM) models). L.E.A.P.S. technology is a novel T-cell immunization technology that enables the design and synthesis of non-recombinant, proprietary peptide immunogens. Combination of a small peptide that activates the immune system with another small peptide from a disease-related protein containing a Immune Cell binding ligand (ICBL) or epitope, and allows the L.E.A.P.S. vaccines to activate precursors to differentiate and become mature cells that can initiate and direct appropriate T cell responses. As such, readily synthesized, defined immunogens can be prepared to different diseases and are likely to elicit protection or therapy as applicable in humans as they and do in mice. L.E.A.P.S. vaccines have promise for the treatment of rheumatoid arthritis and other inflammatory diseases and for infections, such as influenza and HSV1. The protective responses are characterized as Th1 immune responses and immunomodulatory responses with increased IL-12p70 and IFN-γ (Th1 cytokines) but reduced inflammatory cytokines TNF-α, IL-1 and IL-17 (Th2 and Th17 cytokines) and concomitant changes in antibody subtypes produced. LEAPS immunogens have been used directly in vivo or as ex vivo activators of DC which are then administered to the host.


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