383 results about "Transcriptional regulation" patented technology

The present disclosure relates to methods of and systems for modifying the transcriptional regulation of stem or progenitor cells to promote their differentiation or reprogramming of somatic cells. Further, the labeling and editing of human genomic loci in live cells with three orthogonal CRISPR/Cas9 components allow multicolor detection of genomic loci with high spatial resolution, which provides an avenue for barcoding elements of the human genome in the living state.

The invention provides a method for modulating gene expression by contacting a cellular system with a double-stranded ribonucleic acid molecule capable of associating with a regulatory machinery that controls transcription of one or more genes, wherein the association results in altered expression of the one or more genes. The invention is further directed to method for directing the differentiation of neuronal stem cells into neurons by contacting a cellular system with a double-stranded ribonucleic acid molecule capable of associating with a regulatory machinery that controls transcription of one or more genes involved in neuronal differentiation and directing the transcription of the one or more genes. In related embodiments, the invention provides particular compositions of double-stranded ribonucleic acid molecules as well as therapeutic and screening applications of the invention.

The invention relates to plant transcription factor polypeptides, polynucleotides that encode them, homologs from a variety of plant species, and methods of using the polynucleotides and polypeptides to produce transgenic plants having advantageous properties, including increased biomass or improved cold or other osmotic stress tolerance, as compared to wild-type or reference plants. The invention also pertains to expression systems that may be used to regulate these transcription factor polynucleotides, providing constitutive, transient, inducible and tissue-specific regulation.

The present invention relates to a new method for determining the RNAi mediated transcriptional regulation of a cell by the determination of a pattern of at least 3 miRNA detected simultaneously and quantified in the same cell extract. The determination of a pattern of miRNA comprises the steps of: (i) providing an array onto which are fixed capture probes, said capture probes being arranged on pre-determined locations and reflecting the genomic or transcriptional matter of a cell; (ii) isolating a miRNA pool potentially present from a cell; (iii) elongating or ligating said miRNAs into labeled capture probes, (iv) contacting said labeled polynucleotides with the array under conditions allowing hybridization of the labeled polynucleotides to complementary capture probes present on the array; (v) detecting and quantifying a signal present on the specific locations of the array, wherein the detection of a pattern of at least 3 signals on the array reflects the pattern of miRNAs being involved in the RNAi mediated cellular transcriptional regulation.

Methods, compositions, and kits are provided for imaging a polypeptide of interest. Methods, compositions, and kits are also provided for site-specific transcriptional regulation of one or more genetic elements.

The present invention includes peptides, compositions as well as their use for the prevention or treatment of various age related or pathological conditions of skin or other tissues including skin wrinkles, wounds, different types of fibrosis and methods of reconstructing different tissues such as techniques used in regenerative medicine. The invention further includes peptide mimetics and methods of use including interfering with transcriptional complexes characteristic of fibroblasts of aged skin and stimulating synthesis of structural components of extracellular matrix.

The invention provides an MYB transcription factor CmMYB6 implicated in chrysanthemum petal anthocyanin biosynthesis regulation. The coding region sequence of the MYB transcription factor CmMYB6 contains 765 nucleotides. A CmMYB6 amino acid sequence contains a conserved R2R3 MYB domain, a [D/E]Lx2[R/K]x3Lx6Lx3R motif and an ANDV motif exist in the R3 domain, the [D/E]Lx2[R/K]x3Lx6Lx3R motif can interact with bHLH, and the ANDV motif is the characteristic motif of the MYB transcription factor implicated in anthocyanin biosynthesis regulation. The gene expression of CmMYB6 rises in the petal growth process and is significantly and positively correlated with anthocyanin synthesis the CmMYB6 can induce the activity of synthesis of a key gene CmDFR promoter from anthocyanin, and the CmMYB6 has substantially enhanced induction usefulness and can strongly induce accumulation of tobacco leaf anthocyanin during cooperative expression of the CmMYB6 and MrbHLH1. The MYB transcription factor can be used in transcription regulation of plant anthocyanin biosynthesis and plant color modification.

The invention discloses a nanometer antibody, an encoding sequence and an application of H2A.Z variant, and meanwhile, discloses a gene sequence encoding the nanometer antibody, a method for preparing the nanometer antibody and a host cell for expressing or capable of expressing the nanometer antibody. A nanometer antibody VHH chain of the histone H2A.Z variant comprises framework regions and a complementary determining region, wherein four framework regions are arranged and are respectively FR1-FR4; the complementary determining region is amino acid sequences of CDR1-CDR3, wherein CDR1 refers to amino acid sequences as shown in SEQNO.16-SEQNO.18; CDR2 refers to amino acid sequences as shown in SEQNO.19-SEQNO.21; CDR3 refers to amino acid sequences as shown in SEQNO.22-SEQNO.24. The nanometer antibody can be efficiently expressed in Escherichia coli and can be applied in research on high expression of cancer associated protein and related transcription regulation mechanism.

The invention provides methods and materials relating generally to plant derived flavin-containing monooxygenases (FMOs) capable of catalysing oxidation of a thio- to a sulphinyl-group during glucosinolate biosynthesis. It further relates to plant derived MYB factors capable of transcriptional regulation of biosynthetic genes. These have utility in the modification of glucosinolate biosynthesis.

The present invention relates to the field of transgenic plants with novel phenotypes, especially plants with enhanced drought and pathogen resistance. Provided are transgenic crop plants comprising integrated in their genome a chimeric gene, characterized by said chimeric gene comprising a transcription regulatory sequence active in plant cells operably linked to a nucleic acid sequence encoding a protein having the sequence of SEQ ID NO: 3 or a protein at least 70% identical to SEQ ID NO: 3, or an ortholog protein or a functional fragment thereof. In addition to enhanced drought tolerance the transgenic plants may show enhanced disease resistance and enhanced root structure.

The invention discloses a method for increasing the yield of L-arginine synthesized from corynebacterium crenatum, and belongs to the technical field of bioengineering. By means of the method, recombinant corynebacterium crenatum of which a nitrogen transcriptional regulation factor AmtR is knocked out and ammonium transport protein is over-expressed is successfully constructed. By adopting a strategy of batch fermentation by a 5-L fermentation tank and optimizing fermentation conditions, finally the recombinant corynebacterium crenatum Cc5-5/pXMJ19-amtB is fermented for 96 h, the L-arginine yield of the recombinant corynebacterium crenatum reaches 60.9+/-1.31 g/L, the yield is increased by 30.56% compared with an original strain of corynebacterium crenatum original strain SYPA5-5, the production intensity reaches 0.634 g/L.h, and the saccharic acid conversion rate is 0.36+/-0.018 g/g, so that high yield of the L-arginine is realized. Meanwhile, utilization of NH4+ is increased in therecombinant corynebacterium crenatum, so that it is shown that knockout of the nitrogen transcriptional regulation factor and overexpression of the ammonium transport protein have a remarkable effecton the yield of the L-arginine.

The invention discloses a myrothecium roridum A553 trichothecene synthase gene Tri5 promoter and application thereof. The nucleotide sequence of a promoter is shown in SEQ ID NO.1. According to the promoter, through a chromosome walking technology, the upstream promoter sequence of the Tri5 gene is obtained, the core region of the promoter is predicted, and the myrothecium roridum A553 trichothecene synthase gene Tri5 promoter Tri5P is obtained. By means of the promoter, expression of a hygromycin resistance gene can be efficiently started, the starting efficiency is close to that of a constitutive promoter TEF1, and a molecular biology basis is laid for increasing the yield of trichothecene toxin and obtaining more novel trichothecene toxin with high activities through transcriptional regulation and heterologous expression in the later period.

To provide a heat shock transcription factor (HSF) 2 binding factor, which can be involved in the transcriptional regulation of HSP70.2 playing an essential role in spermatogenesis; a DNA encoding the binding factor; an expression vector carrying the DNA; a transformant harboring the expression vector; a process for preparing a recombinant protein comprising the step of culturing the transformant; an antibody or a fragment thereof capable of specifically binding to the binding factor; an antisense DNA or antisense RNA complementary to the DNA; and an oligonudeotide probe or primer capable of specifically hybridizing to the DNA.

The invention relates to a fluorescence-based cadmium ion concentration detection method by using whole cell biosensor, and provides whole cell biosensors used for detecting the concentration of cadmium ions, and a method for quantitatively detecting the concentration of cadmium ions in an aqueous solution by utilizing the biosensors. Whole cells are bacteria having a biological metabolism activity, and the bacteria used in the invention comprise Escherichia coli and Pseudomonas putida. The biosensors realizes the detection of the concentration of the cadmium ions through the steps of identifying cadmium ions by a transcription regulation protein CadR, combing with the cadmium ions, combining with a CadR combined operon sequence (SEQ2) containing the cadmium ions, starting fluorescin transcription, converting the amount of the cadmium ions to the fluorescin expression level, and detecting the fluorescin fluorescence intensity.

The invention provides a rice anther high-expression promoter OsAnth4 and application thereof. The invention further provides an expression cassette containing the promoter and a recombinant expression vector. The inventor discovers, extracts and identifies a DNA sequence, with transcriptional control activity, in Nipponbare. The promoter is applied to crop gene engineering and used for culturing transgenic plants. The promoter can specifically drive target genes to perform high expression in anther, and accordingly the promoter can be effectively applied to rice fertility improvement and applied to hybrid rice breeding. The rice anther high-expression promoter is connected into a vector to have the gene upstream region capable of improving rice anther character and function, and accordingly the recombinant expression vector is built; the recombinant expression vector is transferred into rice cells, tissue or organs for culturing to obtain corresponding transgenic plants; in the plants, the promoter can drive the target genes to perform specific expression in the anther so as to improve the rice fertility.