American Journal of Infectious Diseases

Induction of a Soluble Anti-HIV-1 factor (s) with IFN-γ, IL-10, and β-Chemokine Modulating Activity by an Influenza-Bacterial Polyantigenic Mixture

José W. Rodríguez, Nat O. Pagan, Mar C. Ocasio, Zilka Ríos, Luis A. Cubano, Nawal M. Boukli, Miguel Otero, Robert Hunter, Madhavan P. Nair and Eddy Rios-Olivares

DOI : 10.3844/ajidsp.2007.267.275

American Journal of Infectious Diseases

Volume 3, Issue 4

Pages 267-275

Abstract

Partial immune restoration may be obtained with highly active antiretroviral therapy (HAART), but specific anti-HIV-1 immune responses do not appear to improve substantially. We have demonstrated that a soluble factor(s) induced by a mixture of inactivated influenza and bacterial vaccines called polyantigenic immunomodulator (PAI), possesses strong immunoregulatory and anti- HIV-1 activities. In the present study, we show that culture fluids from both PAI-stimulated peripheral blood mononuclear cells (PBMC) and CD8+ T-cells of HIV-1 infected patients were able to suppress HIV-1 replication in an MHC-unrestricted fashion. The PAI-induced antiviral activity was eliminated when culture fluids were pre-heated at 100°C for 10 min. and it is associated with induction of IFN-γ, MIP-1α, MIP-1β, and RANTES production, but inhibition of IL-10. Furthermore, this induction is dependent on the immunological status (CD4:CD8 ratio) of the HIV-1 infected patient. Taken together, our results suggest that the MHC-unrestricted HIV-1 suppression that is induced by culture fluids from PAI-stimulated PBMC may result from the stimulation of immune cell subpopulations to produce a heat-labile antiviral soluble factor(s), which in turn modulate cytokine and β-chemokine production. The identification of this PAI-induced soluble factor(s) may have major therapeutic potential.

Copyright

© 2007 José W. Rodríguez, Nat O. Pagan, Mar C. Ocasio, Zilka Ríos, Luis A. Cubano, Nawal M. Boukli, Miguel Otero, Robert Hunter, Madhavan P. Nair and Eddy Rios-Olivares. 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.