HIV-1 Infection Detection Assay for Seroconverted HIV-1 Vaccine Recipients

Available for licensing and commercial distribution is a serological test specifically designed to distinguish between antibodies generated in HIV vaccine recipients and those generated in a natural HIV infection. The method is useful in HIV vaccine development and clinical studies as it can readily detect early breakthrough infections in seroconverted vaccine recipients, thus providing the information required to determine vaccine efficacy. The test kit includes diagnostic peptide fragments derived from human immunodeficiency virus-1 (HIV-1).

Dengue Tetravalent Vaccine Containing a Common 30 Nucleotide Deletion in the 3'-UTR of Dengue Types 1, 2, 3, and 4

The invention relates to a dengue virus tetravalent vaccine containing a common 30-nucleotide deletion (delta30) in the 3'-untranslated region (UTR) of the genome of dengue virus serotypes 1, 2, 3, and 4. The previously identified delta30 attenuating mutation, created in dengue virus type 4 (DEN4) by the removal of 30 nucleotides from the 3'-UTR, is also capable of attenuating a wild-type strain of dengue virus type 1 (DEN1).

Countercurrent Chromatography Separation of Polar Sulfonated Compounds

The invention is a method and apparatus for separating a quantity of a sulfonated polar compound from other compounds in a mixture using countercurrent chromatography. The inventors have found that countercurrent chromatography techniques may be employed to separate different species of polar sulfonated compounds that have resisted isolation in preparative amounts by other chromatographic methods.

Glycan-masked engineered outer domains of HIV-1 GP120 and Their Use

The VRC01-class of potent, broadly neutralizing antibodies (bnAbs) targets the conserved CD4-binding site (CD4bs) of HIV-1 Env which has been a major target of HIV-vaccine design. The current best priming immunogen to engage the VRC01-class germline precursors is the eOD-GT8 60mer, which elicits VRC01-class precursors in multiple transgenic mouse models. However, a large proportion of the antibodies elicited by eOD-GT8 60mer are non-CD4bs or “off-target” antibodies, undermining its effectiveness in eliciting the VRC01-class bnAb precursors.

New Cholera Vaccine and Method for Conjugating Bacterial Polysaccharides to Proteins

A new conjugate vaccine for cholera has been developed. The invention includes a new method to conjugate the O-specific polysaccharide-core part of the bacterial lipopolysaccharide and protein subcomponents. Conventional technology has entailed chemical treatment of both components to introduce linkers, which made them amenable for covalent linking. The new method simplifies production by utilizing squaric acid chemistry for conjugating the free amine-containing species (e.g. polysaccharides) directly to amine-containing species (e.g.

Monoclonal Antibodies Against Poliovirus

Early work by Hammond at al. showed gamma globulin to be effective for the prevention of poliomyelitis. Therefore, passive immunotherapy could be another way to treat chronic excretors. Even though prior attempts to use intravenous immunoglobulin (IVIG) and breast milk were unsuccessful, there is reason to think that higher doses of antipoliovirus antibodies could result in complete clearance of poliovirus from chronically infected individuals.

Neutralization of Hepatitis C Virus (HCV)

Available for licensing and commercial development are compositions and methods for preventing and/or treating infection caused by hepatitis C virus (HCV). The invention is based on mapping studies conducted by the inventors of two epitopes within HCV E2: epitope I and epitope II. It has been discovered that epitope I is involved in virus neutralization but that epitope II mediates antibody interference, probably an adaptation of the virus to obfuscate the immune system.