Multimeric Protein Toxins to Target Cells Having Multiple Identifying Characteristics

This technology relates to multimeric bacterial protein toxins which can be used to specifically target cells. Specifically, this is a modified recombinant anthrax toxin protective antigen (PrAg) that has been modified in several ways. First, the PrAg can be activated both by a metalloproteinase (MMP) and by urokinase plasminogen activator (uPA). Second, the native PrAg lethal factor (LF) binding site has been modified so that only a modified PrAg comprising two different monomers can bind anthrax LF.

Transcytosis of Adeno-Associated Viruses

The invention relates to a method for delivering nucleic acids to a variety of cells including those of the gut, kidney, lung and central nervous system. The underlying cells of such organs are covered by a barrier of endothelial or epithelial cells which can limit the transfer of nucleic acids, or other potentially therapeutic agents, to the underlying target cells. To overcome this limitation, the method employs certain members of the parvovirus family to transcytose the barrier cells.

Laminin A Peptides

This invention relates to peptides and derivatives thereof having laminin-like activity, as well as a pharmaceutical composition of the peptide. The peptides claimed include Serine-Isoleucine-Lysine-Valine-Alanine-Valine (SIKVAV). Methods for promoting increased adhesion and migration of epithelial cells is also disclosed. The peptides have wide usage in research, nerve regeneration and cancer treatment. For example, this invention may be useful as an adhesion and regeneration agent for nerve guides and as an adhesion agent for vascular prosthesis.

Peptides With Laminin Activity

Peptides with laminin activity, including YIGSR, are claimed. These peptides block angiogenesis, alter the formation of capillary structures by endothelial cells, prevent the formation of excess blood vessels in tissue and inhibit in vivo tumor cell colonization of tissues. These peptides can be used, among other things, to inhibit metastasis.

Hybrid Adeno-Retroviral Vector for the Transformation of Cells (E-258-1998)

The invention described and claimed in this patent application provides for novel hybrid vectors which may be used for cell transformation, either in vivo or in vitro. The hybrid vectors have an adenoviral backbone with retroviral long terminal repeats (LTRs). Such vectors are capable of transforming dividing or non-dividing cells and integrate stably into the chromosome providing a means of efficient, reliable, long-term gene expression. The vector was packaged as a recombinant adenovirus and delivered to the target cell.

Multipotent Postnatal Stem Cells From Human Periodontal Ligament and Uses Thereof

It is estimated that over 40 percent of the adult population in the United States has periodontal disease in one form or another. Periodontal Disease is a chronic infection of the periodontal ligament (PDL) and the adjacent bone and cementum. The effects of Periodontal Disease range from simple gum inflammation to, in extreme cases, tooth loss.

Activation of Recombinant Diphtheria Toxin Fusion Proteins by Specific Proteases Highly Expressed on the Surface of Tumor Cells

This invention relates to diphtheria toxin fusion proteins comprising a diphtheria toxin (DT) cell-killing component and a cell-binding component such as granulocyte macrophage colony-stimulating factor (GM-CSF), interleukin 2 (IL-2), or epidermal growth factor (EGF). Receptors for the latter three materials are present on many types of cancer cells; therefore, these fusion proteins bind preferentially to these cancer cells. A key feature is that these toxins are altered so as to require activation by a cell-surface protease that is overexpressed on many types of cancers.

Cloning and Characterization of an Avian Adeno-Associated Virus and Uses Thereof

Currently, adeno-associated virus (AAV) represents the gene therapy vehicle of choice because it has many advantages over current strategies for therapeutic gene insertion. AAV is less pathogenic than other virus types; stably integrates into dividing and non-dividing cells; integrates at a consistent site in the host genome; and shows good specificity towards various cell types for targeted gene delivery.

Pain Control by the Selective Local Ablation of Nociceptive Neurons

The vanilloid receptor (VR) is a cation channel predominantly expressed on the peripheral processes and perikarya of nociceptive primary afferent neurons. Previous studies have shown that activation of the peripheral receptors by agonists such as capsaicin from hot peppers, or the much more potent resiniferatoxin, produces acute pain sensation which may be followed by desensitization. These inventors discovered that administration of VR agonists in the vicinity of neuronal cell bodies expressing the VR receptor can actually destroy those cells.

Postnatal Stem Cells and Uses Thereof

Many individuals with ongoing and severe dental problems are faced with the prospect of permanent tooth loss. Examples of such dental problems include: dentinal degradation due to chronic dental disease (caries or periodontal); mouth injury; or through surgical removal, such as with tumors associated with the jaw. For many, a technology that offers a possible alternative to artificial dentures by designing and transplanting a set of living teeth fashioned from an individual's own pulp cells would greatly improve their quality of life.