High Level Expression and Purification of Untagged and Histidine-tagged Human Immunodeficiency Virus Type-1 Reverse Transcriptase

Human immunodeficiency virus type-1 reverse transcriptase (HIV-1 RT) gene encodes 560 amino acids. In the virus, however, HIV-1 RT occurs as a dimer of two related polypeptides, p66 and p51 subunits at a molar ratio of 1:1. The p51 subunit is derived from a C-terminal proteolytic cleavage of the p66 subunit. This invention describes a simplified protocol to purify large quantities of histidine-tagged and untagged heterodimeric forms of human immunodeficiency virus type-1 reverse transcriptase (HIV-1 RT) from Escherichia coli.

NAG-1: A Non-Steroidal Anti-Inflammatory Drug Related Gene Which Has Anti-Tumorigenic Properties

Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used in the treatment of inflammatory disease, and their anti-inflammatory effects are believed to result from their ability to inhibit the formation of prostaglandins by prostaglandin H synthase (COX). Two forms of prostaglandin H have been identified, COX-1 and COX-2. The former seems to be constitutively expressed in a variety of tissues while the high expression of the latter has been reported in colorectal tumors. NSAIDs have been shown to be effective in reducing human colorectal cancers and possibly breast and lung cancers.

Mouse Monoclonal Antibodies to Human Tristetraprolin (TTP)

TTP has been implicated in autoimmune and inflammatory diseases through its role as a regulator of the transcripts encoding several pro-inflammatory cytokines, including tumor necrosis factor alpha. However, it has been difficult to study endogenous TTP in man and other animals because it is expressed at very low levels in most cells and tissues, and because of the lack of mouse monoclonal antibodies directed at the human protein.

Transgenic Mice with Conditionally-Enhanced Bone Morphogen Protein (BMP) Signaling: A Model for Human Bone Diseases

This technology relates to novel animal models of several human bone diseases that have been linked to enhanced BMP signaling. More specifically, this mouse model expresses a mutant receptor for BMP, known as Alk2 that is always actively signaling. This receptor is under the control of the Cre-loxP system, which allows control of expression of the mutant Alk2 in both a developmental and tissue-specific manner. As a result, the enhanced signaling conditions exhibited in multiple human bone-related diseases can be studied with the same animals.

Mouse Monoclonal Antibody to the Nitrone Spin Trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO)

Oxidative stress resulting in the formation of biological radicals has been implicated in a number of human diseases, such as cancer as well as aging. There is, however, a paucity of reliable methods for in vivo or ex vivo detection of radical formation. Until now the only general technique that allowed for the detection of these highly reactive species was electron spin resonance (ESR) using spin traps. One of the most popular of these spin traps is 5,5-dimethyl-1-pyrroline N-oxide (DMPO).

Methods for the Identification of Textual and Physical Structured Query Fragments for the Analysis of Textual and Biopolymer Information

The invention comprises algorithms implemented in software for "structured combinatorial queries" that may be used for analyses of relatedness and information content in any textual information, and especially in biological sequences. The invention also includes experimental methods for isolating and comparing DNA fragments ("Structured Query Fragments" or SQFs) obtained using site-specific cleavage effectors acting on substrate DNA that is asymmetrically end-immobilized on a solid support.

A Target for the Development of Diagnostics and Therapeutics for Abnormal Hematopoiesis

The zinc finger protein ZFP36L2 has been shown by the inventors to play an essential role in hematopoiesis, a process that is dysregulated in hematological cancers, anemia, and other conditions. Thus, ZFP36L2 has promise for use in a diagnostic test to detect abnormal hematopoiesis, or as a target for the development of therapeutics to treat abnormal hematopoiesis.

RORgamma (RORC) Deficient Mice Which Are Useful for the Study of Lymph Node Organogenesis and Immune Responses

The retinoid-related orphan receptor gamma (RORgamma) is a member of the nuclear receptor superfamily. NIH investigators used homologous recombination in embryonic stem cells to generate mice in which the RORgamma gene was disrupted. RORgamma deficient mice lack peripheral and mesenteric lymph nodes and Peyer's patches indicating that ROR expression is indispensable for lymph node organogenesis. In addition, RORgamma is required for the generation of Th17 cells which play a critical role in autoimmune disease.

New Mouse Strain with Conditional Deletion of SMAD7: Analysis of Disease Processes Involving Immunological, Fibrotic or Cardiovascular Indications

SMAD7 conditional knockout mice are available for licensing. SMAD7 can be knocked out by breeding with CRE-recombinase transgenic mice with a variety of promoters to yield tissue or cell type-specific deletions of SMAD7. SMAD7 has been shown to play a role in bone morphogenesis, cardiovascular tissue generation, immune regulation and fibrosis. Therefore, these mice provide a unique model to examine the role of the SMAD7 gene in disease processes that involve immunological, fibrotic, or cardiovascular components.

NAG-1 Transgenic Mouse Model

The nonsteroidal anti-inflammatory drug-activated gene-1 (NAG-1) encodes a protein that has anti-inflammatory, proapoptotic, and antitumor properties. It plays a pivotal role in antitumorigenesis induced by chemopreventive compounds. Transgenic mice expressing human NAG-1 have been developed by the NIH investigator and collaborator.