229 results about "DNA receptors" patented technology

This invention relates to the field of biotechnology or genetic engineering. Specifically, this invention relates to the field of gene expression. More specifically, this invention relates to novel substitution mutant receptors and their use in a nuclear receptor-based inducible gene expression system and methods of modulating the expression of a gene in a host cell for applications such as gene therapy, large scale production of proteins and antibodies, cell-based high throughput screening assays, functional genomics and regulation of traits in transgenic organisms.

The present invention relates to non-steroidal ligands for use in nuclear receptor-based inducible gene expression system, and a method to modulate exogenous gene expression in which an ecdysone receptor complex comprising: a DNA binding domain; a ligand binding domain; a transactivation domain; and a ligand is contacted with a DNA construct comprising: the exogenous gene and a response element; wherein the exogenous gene is under the control of the response element and binding of the DNA binding domain to the response element in the presence of the ligand results in activation or suppression of the gene.

The invention provides chimeric proteins having at least two functional protein units, each containing the dimerization domain of a member of the steroid/thyroid hormone nuclear receptor superfamily. The chimeric proteins can fold under crystallization conditions to form functional entities. The functional entities optionally contain a novel flexible peptide linker of variable lengths between at least two of the protein units. In a preferred embodiment, the linker is designed to be increased in increments of 12 amino acids each to aid in preparation of variant chimeric proteins. The DNA binding characteristics of the invention functional entities differ from those of wild-type complexes formed between “monomeric” receptors and their binding partners. Some functional entities, e.g. dimers expressed as fusion proteins, transactivate responsive promoters in a manner similar to wild-type complexes, while others do not promote transactivation and function instead essentially as constitutive repressors. The invention further provides nucleotide sequences encoding the invention chimeric proteins, cells containing such nucleotide sequences, and methods for using the invention chimeric proteins to modulate expression of one or more exogenous genes in a subject organism. In addition, isolated protein crystals suitable for x-ray diffraction analysis and methods for obtaining putative ligands for the invention chimeric proteins are provided.

The present invention relates to a novel class of nuclear receptor binding agents (NRBAs). The NRBAs are applicable for use in the prevention and/or treatment of a variety of diseases and conditions including prevention and treatment of cancers such as prostate and breast cancer, osteoporosis, hormone-related diseases, inflammatory diseases, oxidative stress related disorders such as Parkinson's and stroke, neurological disorders, ophthalamic disorders, cardiovascular disease, and obesity.

The present invention includes methods, compositions, cosmetics and pharmaceutical compositions for enhancing the degradation of a nuclear receptor (NR) or a STAT transcription factor protein. The methods, compositions, cosmetics and pharmaceuticals may be used to prevent or treat disorders or medical conditions that are at least in part affected by a nuclear receptor activation pathway or STAT activation pathway.

Methods of characterizing and identifying negative hormones of nuclear receptors. Also disclosed are methods of making modulators of retinoid nuclear receptor transactivation activity, assays for agonists, antagonists, and negative hormones of the RAR receptor, and specific retinoid modulators of retinoid nuclear receptors.

The present invention relates to non-steroidal ligands for use in nuclear receptor-based inducible gene expression system, and a method to modulate exogenous gene expression in which an ecdysone receptor complex comprising: a DNA binding domain; a ligand binding domain; a transactivation domain; and a ligand is contacted with a DNA construct comprising: the exogenous gene and a response element; wherein the exogenous gene is under the control of the response element and binding of the DNA binding domain to the response element in the presence of the ligand results in activation or suppression of the gene.

The present invention includes nuclear receptor heterodimer and nuclear receptor-coactivator peptide assays for identifying ligands for nuclear receptors, utilizing scintillation proximity and fluorescence resonance energy transfer (FRET), and methods of using identified ligands.

The present invention relates to a topically applicable formulation containing Valproic Acid or a derivative thereof which can be used alone or in combination with topically applicable formulations of retinoids or of nuclear receptor ligands, or of chemotherapeutic agents (e.g. 5-Fluorouracil). The formulation is useful for the topical treatment of cancerous skin disorders, such as Basal Cell Carcinoma, Squamous Cell Carcinoma, Keratoakantoma, Bowen Disease, cutaneous T-Cell Lymphoma and also for the topical treatment of pre-malignant lesions, and of inflammations of the skin and/or mucosa. The invention also relates to the use of this topically applicable formulation for the protection from UV light and for the treatment of sun burn. The invention includes the use of VPA for the manufacture of a clinically used medicament for the topical treatment of the human diseases listed above.

Methods for identifying agents which alter thyroid hormone metabolism or cholesterol and lipid metabolism by modulating expression and/or activity of the nuclear receptor CAR are provided. Also provided are compositions containing such agents and methods of using such agents to alter thyroid hormone metabolism or cholesterol and lipid metabolism in a subject. Administration of such agents is useful in the treatment of conditions such as obesity, cholesterolemia and dyslipidemia.

The present invention relates to compounds according to the general formula (I) which bind to the NR1H4 receptor and act as agonists of the NR1H4 receptor. The invention further relates to the treatment of diseases and/or conditions through binding of the nuclear receptor by the compounds and the production of medicaments using the compounds.

This invention relates to the field of biotechnology or genetic engineering. Specifically, this invention relates to the field of gene expression. More specifically, this invention relates to novel substitution mutant receptors and their use in a nuclear receptor-based inducible gene expression system and methods of modulating the expression of a gene in a host cell for applications such as gene therapy, large scale production of proteins and antibodies, cell-based high throughput screening assays, functional genomics and regulation of traits in transgenic organisms.

The present invention relates to methods for prevention and/or treatment of metabolic disorders, post-menopausal obesity and conditions associated with high fat diet consumption including, obesity, body weight gain, fat mass formation, bone mineral content reduction, white adipose tissue weight gain, increased cholesterol levels, increased leptin levels, insulin resistance, type II diabetes, increased blood glucose levels, inflammatory diseases, cardiovascular diseases, fatty liver condition (accumulation of fat in the liver), decreased uncoupling protein-1 (UCP-1) levels and increased lipogenesis.

The invention discloses a molecular-dynamics-simulation-based virtual screening method of nuclear receptor mediated endocrine disruption substances, and belongs to the field of virtual screening and activity prediction of environmental suspicious endocrine disruption substances. The molecular-dynamics-simulation-based virtual screening method includes the steps of carrying out butt joint on a receptor file obtained by the fact that optimization and testing or homology modeling are/is carried out on tested small molecules to form a compound, and then using a GROMACS software package to carry out molecular dynamics simulation. Motion trail analysis is carried out on a twelfth helix of a receptor, pollutants with the activity of the receptor are identified through a changing curve of root-mean-square deviation analysis of a space position along with time changes, within the required time, a corresponding helix is regarded to be located to a determined position when the curve tends to be stable, and the receptor has the biological activity. In addition, the located position is inspected to judge whether the activity is fitting or resistance.

The present disclosure relates generally to compounds which bind to the NR1H4 receptor (FXR) and act as agonists of FXR. The disclosure further relates to the use of the compounds for the preparation of a medicament for the treatment of diseases and/or conditions through binding of said nuclear receptor by said compounds and to a process for the synthesis of said compounds.

A solved three-dimensional crystal structure of a glucocorticord receptor (GR) α ligand binding domain polypeptide is disclosed, in the form of a crystalline glucocorticord receptor α ligand binding domain polypeptide in complex with the ligand fluticasone propionate (FP) and a peptide derived from the co-activator TIF2. The GR/FP/TIF2 structure includes an expanded binding pocket not seen in other GR structures. Methods of designing steroid and non-steroid modulators of the biological activity of GR and other nuclear receptors (NRs) are also disclosed. In another aspect of the present invention homology models of androgen receptor (AR), progesterone receptor (PR) and mineralcorticoid receptor (MR) are disclosed, as well as methods of forming homology models for other NRs. Methods of forming a soluble GR/FP/TIF2 complex are also disclosed.

The present invention provides compounds, compositions, and methods for identification of motifs within regulatory regions of genes involved in adipogenesis and adipocyte differentiation. Compounds and compositions are provided for modulating expression of nuclear receptor/transcription factor-regulated genes. Methods for modulating the function of PPAR-γ as well as PPAR-γ-regulated gene promoters, and methods of using oligomeric compounds for diagnosis and treatment of diseases such as obesity and diabetes are also provided.

The present invention relates to compounds which bind to the NR1H4 receptor (FXR) and act as agonists of FXR. The invention further relates to the use of the compounds for the preparation of a medicament for the treatment of diseases and/or conditions through binding of the nuclear receptor by the compounds and to a process for the synthesis of the compounds (1). Z is selected from (a), (b), (c) or (d).

The present invention relates to compounds according to the general formula (1) which bind to the NR1H4 receptor and act as agonists, antagonists or mixed agonists/antagonists of the NR1H4 receptor. The invention further relates to the treatment of diseases and/or conditions through binding of said nuclear receptor by said compounds and the production of medicaments using said compounds.