52 results about "Protein regulation" patented technology

Methods and compositions are disclosed to engineer plastids comprising heterologous genes encoding immuno-activating domains fused to an extracellular domain (ECD) of a receptor or surface glycoprotein, a growth factor or an enzyme and produced within a subcellular organelle, such as a chloroplast. The immuno-activating domains may include those regions of a protein capable of modulating the interaction between immune effector cells via proteins containing stereoselective binding domains and specific ligands, such as the Fc regions of antibodies. The present disclosure also demonstrates the utility of plants, including green algae, for the production of complex multi-domain fusion proteins as soluble bioactive therapeutic agents.

Disclosed is a method for enhancing the effect of a protein modulator on a protein by modifying the protein modulator so that the protein modulator binds with the surface of the protein, along with a method for modulating a protein's biological function by contacting the protein with such a modified protein modulator. Also described are modified protein modulators having the formula PM-SP-(LK)_p-MCG-(M)_q, where PM is a protein modulator which interacts with an active site or allosteric site of a protein; SP is a spacer; LK is a linker; p is 0 or 1; q is an integer greater than or equal to one; MCG is a metal chelating group; and M is a metal ion.

Recombinant expression vectors and methods are provided for detecting HIV and monitoring HIV drug resistance. The method comprises: taking a culture of cells; adding a recombinant viral vector into the culture to transduce the cells, the recombinant viral vector comprising a reporter sequence comprising a reporter gene whose expression is regulated by a protein specific to HIV viruses which is expressed from a genome of an HIV virus upon infection of a cell in the culture that is transduced by the recombinant viral vector, and a receptor sequence comprising CD 4 and one or more coreceptor genes, expression of the coreceptor genes facilitating productive infection of the transduced cell and enabling HIV virus which has infected the transduced cell to replicate and infect non-infected cells in the culture of the cells transduced by the recombinant viral vector; infecting the transduced cells with a sample containing HIV; adding one or more anti-HIV agents to the cell culture; and detecting a change in a level of expression of the reporter gene in cells.

Methods are provided for screening natural and synthetic anti-HIV agents using recombinant cells that are rendered susceptible to productive infection of various strains, subtypes or clades of HIV from both laboratory and clinical isolates. The method comprises: taking a culture of recombinant cells in which at least one of the recombinant cells comprises a reporter sequence comprising a reporter gene whose expression is regulated by a protein specific to HIV, and a heterologous sequence which encodes CD4 and one or more additional cell surface receptors, wherein the heterologous sequence expresses CD4 and the one or more additional cell surface receptors at elevated levels as compared to the cell in the absence of expression by the heterologous sequence such that productive infection of the recombinant cell by HIV is achieved, which is defined by HIV viral replication and the infection of non-infected cells in the culture of the recombinant cells; contacting the cell culture with a sample containing HIV; adding a tester agent to the cell culture; and detecting a change in a level of expression of the reporter gene in the cells in the culture.

Novel modulators, including antibodies and derivatives thereof, and methods of using such modulators to treat hyperproliferative disorders are provided.

This invention provides a method for detecting a neurodegenerative disorder or susceptibility to a neurodegenerative disorder in a subject. This invention also provides a method of developing a modulator of an Alzheimer's Disease-associated gene or protein. Also included in the present invention is a method reducing toxic Aβ peptide production by a eukaryotic cell, a method of ameliorating neurotoxicity of Aβ peptide. The present invention further embodies compositions such as Alzheimer's Disease-associated genes, the polypeptides encoded therefrom, gene delivery vehicles, host cells and kits comprising the Alzheimer's Disease-associated genes and/or polypeptides.

The present invention relates to the use of proteins comprising at least one follistatin domain to modulate the level or activity of growth and differentiation factor-8 (GDF-8). More particularly, the invention relates to the use of proteins comprising at least one follistatin domain, excluding follistatin itself, for treating disorders that are related to modulation of the level or activity of GDF-8. The invention is useful for treating muscular diseases and disorders, particularly those in which an increase in muscle tissue would be therapeutically beneficial. The invention is also useful for treating diseases and disorders related to metabolism, adipose tissue, and bone degeneration.

This invention provides a method for detecting a neurodegenerative disorder or susceptibility to a neurodegenerative disorder in a subject. This invention also provides a method of developing a modulator of an Alzheimer's Disease-associated gene or protein. Also included in the present invention is a method reducing toxic Aβ peptide production by a eukaryotic cell, a method of ameliorating neurotoxicity of Aβ peptide. The present invention further embodies compositions such as Alzheimer's Disease-associated genes, the polypeptides encoded therefrom, gene delivery vehicles, host cells and kits comprising the Alzheimer's Disease-associated genes and/or polypeptides.

The present invention relates to protein modulators, especially modulators of kinesin bioactivities. The present invention provides methods for screening protein modulators, e.g., kinesin modulators that bind to a region of a kinesin and/or that modulate kinesin bioactivities. The present invention also provide methods and compositions for treatment of disorders mediated by abnormal cellular proliferation activities.

The invention provides for the regulation of opine synthesis and catabolism providing improved nitrogen responsiveness, utilizing opine synthase and oxidase nucleic acids and their encoded proteins. The present invention provides methods and compositions relating to altering nitrogen utilization and/or uptake in plants. The invention further provides recombinant expression cassettes, host cells, and transgenic plants.

The present invention describes a method for producing a useful metabolite using a bacterium of the family Enterobacteriaceae, particularly a bacterium belonging to the genus Escherichia, which has been modified to contain a gene(s) expression system including elements of the LysR-type protein-regulated transcriptional machinery modified in such a way that auto-inducible positive feedback regulation of said system is mediated by a coinducer. The method is suitable for producing branched-chain L-amino acids, particularly L-valine, L-isoleucine and L-leucine; and D-pantothenic acid.

The invention provides a general and facile method to obtain secondary metabolites from fungal sources. The invention is based on the discovery that the fungal gene veA and protein encoded thereby regulates the activity of multiple secondary metabolite gene clusters in fungi. Over expression of the gene veA provides increased production of secondary metabolites in engineered cells. In particular, such a method of increasing secondary metabolite production allows the production of improved yields of valuable secondary metabolite products.

The present invention provides amino acid sequences of peptides that are encoded by genes within the human genome, the proteins of the present invention. The present invention specifically provides isolated peptide and nucleic acid molecules, methods of identifying orthologs and paralogs of the proteins of the present invention, and methods of identifying modulators of the proteins of the present invention.

Methods of using adipose septa protein modulators to impart anti-aging benefits to the skin and/or improve skin conditions resulting from weakened or compromised adipose septa.

The invention provides tight junction protein modulators, compositions comprising the same, and uses thereof. In particular, the invention provides tight junction protein modulators that modulate the second extracellular loop of tight junction proteins, such as occludin or claudin.

The invention discloses an explosive molecular biosensor synthesized by utilizing a regulatory element as well as a preparation method and application of the explosive molecular biosensor. The explosive molecular biosensor comprises a report element of a self-luminous operon luxABCDE operon, a sensing element of a promoter nahR, RsrR regulatory protein and a tetH promoter regulated by the RsrR regulatory protein at the downstream, according to the explosive molecule biosensor, a signal of a nahR promoter for sensing explosive molecules is subjected to cascade amplification through the RsrR-PtetH regulation and control element, so that a self-luminous signal generated after sensing the explosive molecules is enhanced, and the detection sensitivity is improved; the method and the biosensor for sensing molecular signals of explosives by regulating the protein regulation element cascade amplification promoter are established, and the sensor is wide in detection range, high in sensitivity, simple and convenient in method, low in cost and high in safety, and can be applied to the fields of environmental protection, national safety maintenance and the like.