Methods for inducing an immune response against Human Immunodeficiency Virus (HIV) in HIV-infected subjects undergoing antiretroviral therapy (ART) are described. The methods include administering an adenovirus vector primer vaccine and a modified vaccinia virus (MVA) vector booster vaccine encoding mosaic HIV antigens.

The present invention relates to compositions comprising two or more DNA plasmids encoding consensus and transmitted founder HIV envelope glycoproteins which expressed and induce a potent immune response.

Compositions and vaccine combinations containing synthetic HIV envelope proteins, and methods for inducing an immune response against human immunodeficiency virus (HIV) infection are described. Viral expression vectors encoding the synthetic HIV envelope proteins can be used in the vaccine combinations to induce immune responses against HIV and provide improved protective immunity against HIV.

Stabilized trimers of a clade A strain and a clade C strain of HIV-1 are provided. Broadly neutralizing antisera against HIV-1, methods of making broadly neutralizing antisera against HIV-1, broadly neutralizing vaccines against HIV-1, as well as methods of treating subjects infected with HIV, preventing HIV infection, and inhibiting HIV-mediated activities are also provided.

Compositions and vaccine combinations containing synthetic HIV envelope proteins, and methods for inducing an immune response against human immunodeficiency virus (HIV) infection are described. Viral expression vectors encoding the synthetic HIV envelope proteins can be used in the vaccine combinations to induce immune responses against HIV and provide improved protective immunity against HIV.

The invention provides compositions, methods, and kits for the treatment or prevention of viral infections. The polyvalent (e.g., 2-valent) vaccines described herein incorporate computationally-optimized viral polypeptides that can increase the diversity or breadth and depth of cellular immune response in vaccinated subjects.

Provided herein is an adjuvant formulation comprising a monophosphoryl lipid A (MPLA)-containing liposome composition to saponin (e.g., QS-21), wherein the liposome composition comprises i) a lipid bilayer comprising phospholipids in which the hydrocarbon chains have a melting temperature in water of 23 C. and ii) cholesterol at a mole percent concentration of greater than about 50% (mol/mol), preferably about 55% to about 71% (mol/mol), or more preferably about 55% (mol/mol). The adjuvant formulation displays minimal toxicity of either lipid A or saponin.

Provided herein are recombinant nucleic acid sequences derived from the C-terminal domain of the HIV-1 gp41 protein, and more specifically compositions and methods for using these epitopes to develop vaccine protection against HIV. Also provided here are monoclonal antibodies that specifically bind to these recombinant nucleic acid sequences derived from the C-terminal domain of the HIV-1 gp41 protein.

Methods for inducing an immune response against Human Immunodeficiency Virus (HIV) in HIV-infected subjects undergoing antiretroviral therapy (ART) are described. The methods include administering an adenovirus vector primer vaccine and a modified vaccinia virus (MVA) vector booster vaccine encoding mosaic HIV antigens.

Stabilized trimers of a clade A strain and a clade C strain of HIV-1 are provided. Broadly neutralizing antisera against HIV-1, methods of making broadly neutralizing antisera against HIV-1, broadly neutralizing vaccines against HIV-1, as well as methods of treating subjects infected with HIV, preventing HIV infection, and inhibiting HIV-mediated activities are also provided.