106 results about "Transformation cell" patented technology

A co-culture apparatus and method for, among other things, converting a progenitor cell line into a target cell line. The apparatus comprises an exterior receptacle, a removable cartridge that fits into the exterior receptacle, and a closure member to seal the apparatus. The invention is also directed to a method for transforming a progenitor cell line into a target cell line. In one embodiment of the invention, the method comprises the steps of: establishing a progenitor cell line; establishing a support cell line; co-culturing said progenitor and support cell lines; establishing a transformation cell line; and co-culturing said progenitor and transformation cell lines, wherein the transformation cell line supports the transformation of the progenitor cell line into a target cell line.

This invention describes a new O-Conotoxin (O-CTX), its encoding polynucleotide, the construction units and transformation cells having this encoding polynucleotide, and the reconstruction process for producing the said O-Conotoxin. This invention also describes the artificial synthesis and applications of the said O-Conotoxin.

The present application discloses a method for discovering a methylation marker gene for the conversion of a cell comprising: (i) comparing converted and unconverted cell gene expression content to identify a gene that is present in greater abundance in the unconverted cell; (ii) treating a converted cell with a demethylating agent and comparing its gene expression content with gene expression content of an untreated converted cell to identify a gene that is present in greater abundance in the cell treated with the demethylating agent; and (iii) identifying a gene that is common to the identified genes in steps (i) and (ii), wherein the common identified gene is the methylation marker gene.

An isolated DNA encoding the enzyme I-SceI is provided. The DNA sequence can be incorporated in cloning and expression vectors, transformed cell lines and transgenic animals. The vectors are useful in gene mapping and site-directed insertion of genes.

The present invention provides methods of introducing a polynucleotide into a target cell, wherein the method employs a light generating protein coding sequence acting as a reporter. An important advantage of the methods described herein is that drug resistant target cells or target cells having no useful auxotrophic markers can be effectively transformed. The present invention also includes transformed cells produced by the methods described herein. Also described are light generating protein coding sequence modifications, a variety of vectors, and methods of using the transformed cells of the present invention.

This invention describes a new T-CTX, its encoding polynucleotide, the construction units and transformation cells having this encoding polynucleotide, and the reconstruction process for producing the said T-CTX. This invention also describes the artificial synthesis and applications of the said T-CTX.

The invention provides a three-dimensional storage device array structure and a manufacturing method thereof. The three-dimensional storage array is formed by the derivation of grid control PNPN vertical selection tubes connected in series mutually and a storage cell of a resistant transformation or phase transformation cell in a three-dimensional space. The cross interference and leakage of electricity problems between adjacent units of the storage array in operation are improved effectively through the storage cell with high switching current ratio, also the structure of the storage cell issimplified, the multi-layer stacking is realized, and the storage density is improved.

The present invention relates to a spider silk crystal protein gene synthesized by plant preferance codon, its expression carrier, the plant cells transformed from it, and the transgenic plant and its descendant. Said gene can be effectively expressed in fibrous plant and the obtained protein moleculae can be combined with the cellulose of plant, so improving the strength of plant fibres.

Methods and compositions are provided for production of flavonoids in microbial hosts. The compositions comprises a set of genes which encode for enzymes involved in one or more steps in the biosymthetic pathway for the conversion of phenylpropanoids to various flavonoids. The method comprises the steps of introducing the set of genes into a heterologous host cell, allowing growth of the cells in a suitable medium such that the expression of the genes results in production of enzymes. When specific substrate(s) is/are provided to the transformed cell, the enzymes act on the substrate(s) to produce the desired flavonoids.

A variety of genetic constructs are disclosed that will find both in vitro and in vivo use in the area of tumor biology and cancer therapy. In particular, expression constructs are provided that contain a p16 encoding region and other regulatory elements necessary for the expression of a p16 transcript. One version of the expression construct is a replication-deficient adenoviral vector. Also provided are methods for the transformation of cell lines and the inhibition of cancer cell proliferation.

It is an object of the present invention to provide an inexpensive and efficient industrial method for obtaining (S)-2-pentanol, (S)-2-hexanol, 1-methylalkyl malonic acid and 3-methyl carboxylic acid at a high optical purity. The present invention provides a method of producing (S)-2-pentanol or (S)-2-hexanol which comprises allowing certain types of microorganisms or transformed cells, a product obtained by treating said microorganisms or cells, a culture solution of said microorganisms or cells, and/or a crude purified product or purified product of a carbonyl reductase fraction obtained from said microorganisms or cells, to act on 2-pentanone or 2-hexanone.

The present invention relates to methods and compositions comprising small interfering RNAs (siRNAs) to identify nucleotides encoding proteins involved in the co-transport of inorganic phosphate in vascular tissues. Specifically, it relates to the identification of Pit-1 and Pit-2 as key proteins involved in vascular calcification, the deposition of calcium phosphate, in blood vessels. The nucleic acids encoding specific siRNAs and vectors encoding these siRNAs are useful as tools to specifically inhibit the expression of Pit-1, Pit-2, or related proteins in various primary and stably-transformed cell lines, and as tools to explore the roles and functional relationships of these proteins involved in vascular calcification. In addition, they may be useful directly as therapeutic agents in humans delivered to sites of vascular calcification.

The present invention relates to methods of obtaining genetic competence in non-competent Bacillus cells for their transformation with exogenous DNA.

The invention relates to a method for preparing natural 4-vinyl guaiacol by biological transformation. According to the method disclosed by the invention, Bacillussp. HY3CCTCCM2012247 is taken as a biocatalyst, natural ferulic acid is taken as a substrate, and the natural 4-vinyl guaiacol is prepared by microbial transformation. The production process comprises the following steps of: (1) performing slant culture; (2) preparing a seed culture solution; (3) culturing transformation cells; and (4) transforming. The method disclosed by the invention belongs to the technical field of biology, thenatural 4-vinyl guaiacol can be produced with high transformation rate by adopting the method, and the method can be used in the fields of tobacco, wine, foods and the like and further has great application prospects.

Methods and DNA constructs are provided for detection and manipulation of a target eukaryotic gene whose expression is restricted to certain tissues or specialized cell types. The methods include transforming a cell with a first indicator component under the control of a promoter selected for its restricted expression in a particular cell or tissue. The cell is also transformed with a gene trap vector encoding a second indicator component. The cell is allowed to differentiate to produce specialized cell or tissue which is monitored for expression of both the first and second indicator components, thereby detecting a gene into which the trap vector has integrated which is expressed in the same cell or tissue type as the selected promoter.

This invention describes a new alpha-CTX, its encoding polynucleotide, the construction units and transformation cells having this encoding polynucleotide, and the reconstruction process for producing the said alpha-CTX. This invention also describes the artificial synthesis and applications of the said alpha-CTX.

Methods of inserting genes into defined locations in the chromosomal DNA of cultured mammalian cell lines which are subject to gene amplification are disclosed. In particular, sequences of interest (e.g., genes encoding biotherapeutic proteins) are inserted proximal to selectable genes in amplifiable loci, and the transformed cells are subjected to selection to induce co-amplification of the selectable gene and the sequence of interest. The invention also relates to meganucleases, vectors and engineered cell lines necessary for performing the methods, to cell lines resulting from the application of the methods, and use of the cell lines to produce protein products of interest.

The present invention provides recombinant viruses which replicate the viral genome selectively in response to the intracellular conditions of the target cell through the use a pathway-responsive promoter which substantially inhibits viral replication in the host cell based on the phenotypic or genotypic of the infected cell. In the target cell, the promoter element of the pathway-responsive promoter is inactive and thus the virus is permitted to replicate. This results in: (1) killing the cells by natural lytic nature of the virus, and/or (2) provides a therapeutic dose of a transgene product (amplified in comparison to replication incompetent vectors) to the target cell, and (3) producing a localized concentration of the virus facilitating the infection of surrounding cells to the recombinant virus. The invention further provides therapeutic and diagnostic methods of use of the vectors, pharmaceutical formulations comprising the vectors, methods of making the vectors and transformed cells comprising the vectors.

The subject invention pertains to a method of rapidly transforming a plant with a gene of interest. The method of the current invention comprises the steps of a) preparing a bacterial culture, wherein the bacterial culture comprises a vector containing the gene of interest, b) producing a plant cell suspension culture from the plant, c) contacting the plant cell suspension culture with the bacterial culture to produce a plant cell transformed with the gene of interest from the plant cell suspension culture, and e) producing a plant from the plant cell transformed with the gene of interest. The method of the current invention can be designed for a high throughput transformation and screening of a plant with a plurality of genes of interest and screening the plants to identify and obtain plants having desirable characteristics.