Platform Technology Using Ubiquitin to Improve the Delivery and Efficacy of Cytosolic Targeted Toxins

Targeted toxins (TT) are hybrid protein drugs consisting of ligands that bind to the surface of cancer cells and deliver polypeptide toxins that kill malignant cells by inactivating cytosolic protein synthesis and inducing cell death. A major challenge in the construction of targeted toxins is reducing the nonspecific binding of the toxin moiety to normal tissues and increasing the cytotoxicity of the treatment.

A Novel Treatment for Malarial Infections

The inventions described herein are antimalarial small molecule inhibitors of the plasmodial surface anion channel (PSAC), an essential nutrient acquisition ion channel expressed on human erythrocytes infected with malaria parasites. These inhibitors were discovered by high-throughput screening of chemical libraries and analysis of their ability to kill malaria parasites in culture. Two separate classes of inhibitors were found to work synergistically in combination against PSAC and killed malaria cultures at markedly lower concentrations than separately.

Recombinant Vaccines Based on Poxvirus Vectors

The technology offered for licensing is foundational in the area of recombinant DNA vaccines. In the last several years, facilitated through a licensing program of the NIH, the technology has been broadly applied in the development and commercialization of several novel human and veterinary vaccines in the areas of infectious disease as well as cancer therapeutics. The NIH wishes to expand its licensing program of the subject technology in a variety of applications that will benefit public health.

Antigenic Chimeric Tick-Borne Encephalitis Virus/Dengue Virus Type 4 Recombinant Viruses

The tick-borne encephalitis virus (TBEV) complex is a group of viruses that can cause severe neutrotropic disease and up to thirty percent (30%) mortality. While these viruses can be found in many parts of the world, the largest impact of the disease occurs in Europe and Russia, where approximately fourteen thousand (14,000) hospitalized TBEV cases occur annually. TBEV is in the family Flaviviridae, genus flavivirus and is composed of a positive-sense single stranded RNA genome that contains 5' and 3' non-coding regions and a single open reading frame encoding ten (10) proteins.

Monoclonal Antibodies That React With the Capsule of <i>Bacillus anthracis</i>

Bacillus anthracis is the causative agent of anthrax and is surrounded by a polypeptide capsule of poly-gamma-D-glutamic acid (gammaDPGA). gammaDPGA is poorly immunogenic and has antiphagocytic properties. The bacterial capsule is essential for virulence. Antibodies to the capsule have been shown to enhance phagocytosis and killing of encapsulated bacilli. These antibodies in combination with antibodies that neutralize the toxins of B. anthracis could provide enhanced protection by their dual antibacterial and antitoxic activities.

Biological/Research Material for H1N1 Influenza Virus Vaccine Research

Offered for licensing is a recombinant attenuated vaccinia virus, MVA, that expresses the haemagglutinin (HA) and nucleoprotein (NP) of influenza virus A/PR/8/34 (H1N1). The virus has been shown to stimulate protective immunity to influenza virus in mice.

The materials can be used for research purposes and in particular in the area of influenza virus vaccines.

The related publications listed below demonstrate the usefulness of this biological material in influenza virus vaccine research.

Vaccines Against Malarial Diseases

The invention offered for licensing is in the field of use of vaccines for malaria. The invention provides gene sequences encoding an erythrocyte binding protein of a malaria pathogen for the expression of the erythrocyte binding protein. The codon composition of the synthetic gene sequences approximates the mammalian codon composition. The synthetic gene sequences are useful for incorporation into DNA vaccine vectors, for the incorporation into various expression vectors for production of malaria proteins, or both.

T-Cell-Specific Gfi-1 Knockout Mouse

This is a mouse model available to study T-cell differentiation. Growth factor independent 1 (GFi-1) is a transcriptional repressor that is transiently induced during T-cell activation. This knockout mouse line is a GFi-1[flox/flox] introduced into a mouse Cre controlled by a CD4 promoter, which allows selective removal of GFi-1 exclusively in T-cells. It has thus-far been used to demonstrate that GFi-1 plays a critical role in enhancing Th2 cell expansion and repressing induction of Th17 and CD103+ iTreg cells.

Methods to Increase Stability of Recombinant Vaccinia-Vectored Vaccines and Increase Expression of a Foreign Gene Inserted in Such Vaccines

The technology offered for licensing is in the field of vaccinia-based recombinant vaccines. In particular the invention relates to methods of stabilizing the recombinant virus, thus resulting in efficient production of the vaccine and efficient expression of the inserted gene. Stabilization of the recombinant virus is achieved by the insertion of the exogenous gene into an intergenic region (IGR) of the viral genome (i.e. Modified Vaccinia Ankara, MVA), where the IGR is flanked by open reading frames of conserved poxvirus genes.