221 results about "Regulation of gene expression" patented technology

The invention relates to engineered CRISPR/Cas9 systems for genomic modification and regulation of gene expression in mammalian cells. The specification describes the design and validation of polynucleotides encoding the Streptococcus pyogenes (S. pyogenes) Cas9 gene and protein and variants of that protein, where the nucleotide sequence has been optimized for expression in mammalian cells, and also modified by fused sequences that enhance various aspects of the CRISPR/Cas system. The specification also describes systems for RNA-guided genome engineering and gene regulation in mammalian cells, including human cells.

The present invention relates to utrons, RNA molecules which contain promoter regulatory motif(s) and DNA analogs thereof and DNA molecules that can be transcribed to produce the foregoing. In particular, the invention provides gene promoter suppressing nucleic acids which suppress transcription from a promoter of interest. In a preferred embodiment, the invention provides the TSU gene, nucleotide sequences of the TSU gene and RNA, as well as fragments, homologs and derivatives thereof. Methods of isolating TSU genes are also provided. Therapeutic and diagnostic methods and pharmaceutical compositions are also provided. In particular, the invention relates to methods for cell replacement therapy, gene therapy or organ transplantation wherein TSU nucleic acids suppress MHC class I and II gene expression, thus preventing immuno-rejection of non-autologous cells or organs. The invention also provides methods for treatment of diseases or disorders by suppression of MHC class I, MHC class II, ICAM-1, B7-1, B7-2, and/or Fc gamma R expression by provision of TSU function.

The present invention provides compositions, kits, assemblies, libraries, arrays, and high throughput methods for large scale structural and functional characterization of gene expression regulatory elements in a genome of an organism, especially in a human genome, that are part of a common pathway. In one aspect of the invention, an array of expression constructs is provided, each of the expression constructs comprising: a nucleic acid segment operably linked with a reporter sequence in an expression vector such that expression of the reporter sequence is under the transcriptional control of the nucleic acid segment. The present invention can have a wide variety of applications such as in personalized medicine, pharmacogenomics, and correlation of polymorphisms with phenotypic traits.

This invention provides a method to silence an endogenous target gene expression in plants by applying a specific dsRNA onto the exterior surface of a plant. Application, such as by spraying or brushing a plant with dsRNA is done without wounding the plant tissue and cells such as by mechanical-type wounding, particle bombardment or mechanical infection with viral vectors. The present invention enables the regulation of gene expression in plants. In some embodiments of the invention, the dsRNA is directed to an essential gene of a plant pathogen or pest, whereby the pathogen and/or pest damage is controlled, resulting in desired agronomic performance.

A system and device are provided which include a gene regulatory system controlling expression of one or more expression cassettes present in or released by the device, by emitting one or more stimulations. An expression cassette includes a regulatable transcription control element that is responsive to the emitted stimulations linked to an open reading frame of interest. The system optionally includes a sensor to sense a parameter indicative of a need, a telemetry module to receive an external command, or a programmable device, for regulating gene expression of the open reading frame.

Methods and devices for the regulation of gene expression in tissue by applying an electric and/or electromagnetic field generated by specific and selective signals so as to treat diseases, conditions, and/or tissue. Gene expression is the up-regulation or down-regulation of the process whereby specific portions (genes) of the human genome (DNA) are transcribed into mRNA and subsequently translated into protein. Methods and devices are described for the regulation of Vascular Endothelial Growth Factor (VEGF) protein gene expression in endothelial cells of various targeted tissues via the capacitive coupling or inductive coupling (e.g., by electrodes or one or more coils or other field generating devices disposed with respect to the targeted cells) of specific and selective signals to the cells of these tissues, where the resultant electric and/or electromagnetic fields treat diseased or injured tissues. The resulting methods and devices are useful for the targeted treatment of peripheral vascular disease, cardiovascular disease, macular degeneration, wound healing, tendon and ligament healing, in preventing tumor growth or spread, and other conditions in which VEGF protein may be implicated.

The present invention relates to expression vectors, wherein each vector comprises at least one gene of interest and a promoter operatively linked thereto wherein each promoter comprises a nucleic acid, whose sequence is randomly mutated with respect to that of the wild-type promoter and cells comprising the same. Methods utilizing either the vectors or cells of this invention, in optimizing regulation of gene expression, protein expression, or optimized gene or protein delivery are described.

Recombinant nucleic acid molecules are provided that form hair pin structures and can be used to down-regulate gene expression. For example, a nucleic acid molecule can comprise a flanking and lower stem loop sequence from a mir-16 gene; an antisense target sequence; a mir-30 loop sequence; a complement of the anti-sense target sequence; and a lower stem loop complementary to the mir-16 sequence. Methods for down regulating gene expression in a cell using such recombinant nucleic acid molecules are also provided.

Morpholino-based oligomers suitable as antisense agent comprising modifications of phosphorodiamidate backbone or modification with 5-substituted pyrimidines of morpholino compound that is soluble in culture medium and sufficient for cell penetration thereby eliminating the need for injecting into the cells. Monomers comprising the said oligomers and its method of manufacture, method of manufacture of the said oligomers and its dye, flurophore, drug, biomolecule conjugate wherein the said oligomers find different end use but not limited to regulation of gene expression, tissue culture with improved transfection efficiency and related studies on cellular transfection.

The invention discloses a method for regulating the expression intensity of genes on microorganism chromosomes by using artificial regulatory elements and libraries thereof. The method for regulating the gene expression intensity on the microbial chromosome by using the artificial regulatory element and its library provided by the present invention includes the following steps: amplify a DNA fragment by PCR, which includes the upstream sequence of the original regulatory region of the gene to be regulated on the microbial chromosome A homologous fragment containing 40-3000 bases, resistance marker gene, artificial regulatory element library or an artificial regulatory element with specific expression strength, homologous to the sequence downstream of the start codon of the gene to be regulated on the microbial chromosome A fragment containing 40-3000 bases; the DNA fragment is electrotransformed into the microorganism, and the original regulatory region of the gene to be regulated on the microbial chromosome is replaced by an artificial regulatory element library or an artificial regulatory element with a specific expression intensity .

A nanopartide and its avidin probe are disclosed. Said gene probe for detecting the mutation or non-mutation of DNA is prepared from nanoparticles or colloidal particles and avidin, streptavidin, or antibiotin through preparing colloidal gold and preparing the compound. Its advantges are high sensitivity, specificity and speed.

The invention relates to an assay for transposase accessible chromatin using sequencing (ATAC-seq) method applied to zebrafish embryos. The method comprises the following steps: firstly, performing zebrafish embryo sample pretreatment; adding lysis buffer into the embryos; cracking the embryos in a water bath by using a wild-neck spearhead; performing a transposition reaction immediately and purifying DNA (Deoxyribose Nucleic Acid); determining a cycle number for library establishment by using a real-time fluorescence quantification method; directly performing library establishment and sequencing by using a further PCR (Polymerase Chain Reaction) method. A regulatory sequence on genome chromatin can be located and decoded by the ATAC-seq method and a DNase-seq (DNase I hypersensitive sites sequencing) method, but the steps in ATAC-seq are simpler, a required cell quantity is smaller, the ATAC-seq is more helpful under the situation that a large quantity of cells cannot be obtained, and the data enriching degree of the ATAC-seq is higher according to an assay result. The ATAC-seq method is further applied to zebrafish embryo cells. Thus, an effective and simple method is provided for the researches of changes of chromatin structures in early developing processes of living organisms and corresponding gene expression regulation and control researches.

A process for high-flux screening, capturing and separation of target moleculae from complex substance (Chinese medicine or chemical mixer) includes preparing a ds DNA microarray chip to make its probe have a binding sites of dsDNA bindin, measuring the affinity of the sites, creating the standard affinity parameter system, mixing the microarray chip with said complex substance, reacting, detecting the affinity variation, screening the varied targets, linking them to the surface of chromatographic column, filling the complex substance in it, capturing the effective moleculae by probes, eluting and collecting the effective moleculae.

Recombinant lentiviral vectors containing at least: a lentiviral backbone comprising essential lentiviral sequences for integration into a target cell genome; a nucleic acid encoding a CCR5 RNAi; and an expression control element that regulates expression of the nucleic acid encoding the CCR5 RNAi element, are provided by this invention. In an alternative aspect, the vector also contains polynucleotides encoding TRIMS alpha and HIV TAR decoy sequences along with gene expression regulation elements such as promoters operatively linked to the polynucleotides. The vectors are combined with packaging plasmid and envelope plasmids and optionally conjugated to cell-specific targeting antibodies. Diagnostic and therapeutic methods for using the compositions are further provided herein.

The present invention relates to a gene expression regulating sequence consisting of a combination of HRE, E2F and TERT, and to a gene delivery system having significantly improved selective tumor cell cytotoxicity using same, and more particularly, to a recombinant adenovirus. In addition, the present invention relates to a pharmaceutical antitumor composition comprising the recombinant adenovirus. The replication of the recombinant adenovirus of the present invention is tumor-specifically regulated by the novel gene expression regulating sequence of the present invention, thus enabling the recombinant adenovirus of the present invention to exhibit improved selective tumor cell cytotoxicity or apoptotic potential, and exhibit remarkably improved antitumor effects particularly in hypoxic conditions. In addition, the specific expression of the recombinant adenovirus in tumor cells may increase in vivo stability, and thus may induce greatly improved antitumor effects.

The present invention provides methods and compositions for regulating transgene expression in a subject using heat generated by electro-magnetic radiation in a target cell. The heat is generated by a thermo generator resided in the target cell upon application the electromagnetic radiation. The amount of the heat is controlled by the energy delivered by the electromagnetic radiation.

A method for detecting transcription factor protein by nucleic acid probe with nuclease protection PRET label includes preparing fluorescence labeled nucleic acid probe, carrying out combination reaction of nucleic acid probe with transcription factor protein, adding nuclease in combination reaction system to carry out enzyme nick reaction and detecting reaction system by fluorescence to reflect expression and activation level of transcription factor protein.

The present invention relates to pharmaceutical compositions for modifying gene expression in a pathological process, thereby preventing or ameliorating said process. More particularly the compositions comprise quinazolinones, especially halofuginone, for inhibiting or preventing alterations in gene expression during fibrosis. The present invention particularly relates to pharmaceutical compositions for improving the regeneration of cirrhotic liver.