72 results about "Telomerase reverse transcriptase" patented technology

The present invention is in the fields of molecular and cellular biology. The invention is generally related to reverse transcriptase enzymes and methods for the reverse transcription of nucleic acid molecules, especially messenger RNA molecules. Specifically, the invention relates to reverse transcriptase enzymes which have been mutated or modified to increase thermostability, decrease terminal deoxynucleotidyl transferase activity, and/or increase fidelity, and to methods of producing, amplifying or sequencing nucleic acid molecules (particularly cDNA molecules) using these reverse transcriptase enzymes or compositions. The invention also relates to nucleic acid molecules produced by these methods and to the use of such nucleic acid molecules to produce desired polypeptides. The invention also concerns kits comprising such enzymes or compositions.

This invention relates to pork liver cell immortalities and its producing method. Procedures are showed: high live ratio fresh original pork liver cell is got by dispase-collagenase perfusion method; it is cultured for 24 hours. Then cell upper heat removing of recombination retronituse that contains SV40 big T antigen is used to infect the pork cell under condition of polybrene which concentration is 8ug/ml. Then it is medicine pressure filtrated by 500ug/ml G418 after one week, single clone cell is picked for large culture when the cell clone appears and grows to 1.0-2.0cm to get pork cell that can passage. Reinfection is done under condition of 8ug/ml polybrene. Then it is medicine pressure filtrated by 2ug/ml puromycin after one week. Single clone cell is picked for large culture when the cell clone appears and grows to 1.0-2.0cm to get immortality pork cell.

Compounds, and methods of using the same, are provided which increase the expression of telomerase reverse transcriptase (TERT) in a cell. These compounds and methods find use in a variety of applications in which increased expression of telomerase is desired, including immortalization of cell lines and treating conditions in a subject characterized by cellular senescence.

Methods and compositions are provided for modulating, e.g., increasing or decreasing, the expression of telomerase reverse transcriptase (TERT). In the subject methods, the binding interaction of the TERT Site C repressor site with a Site C repressor protein complex made up of one or more proteins is modulated to achieve the desired change in TERT expression. A feature of the subject invention is that the target Site C repressor protein complex includes an LSF protein. The subject methods and compositions find use in a variety of different applications, including the immortalization of cells, the production of reagents for use in life science research, therapeutic applications; therapeutic agent screening applications; and the like.

The invention provides dendritic cell (DC) preparations that present a telomerase reverse transcriptase (TRT) peptide in the context of an MHC class I or MHC class II molecule. The DCs may be pulsed with a TRT polypeptide, or may comprise a recombinant polynucleotide encoding TRT. The invention also describes the use of such compositions for the prevention and treatment of cancers and other diseases.

The present invention relates to preadipocyte strains that maintain replicative potential and adipogenic capacity. In particular, the invention relates to preadipocytes engineered to express telomerase reverse transcriptase (TERT). Use of the cells as research tools, in screening assays, and as therapeutic and/or clinical reagents is also described.

An objective of the present invention is to provide an adenovirus vector expressing a REIC/Dkk-3 protein at a high level and containing a DNA construct for expression of REIC/Dkk-3 DNA, wherein the DNA construct is prepared by ligating, from the 5′ terminal side,

• (i) a CMV promoter,
• (ii) REIC/Dkk-3 DNA,
• (iii) a polyA addition sequence, and
• (iv) enhancers prepared by linking an hTERT (Telomerase Reverse Transcriptase) enhancer, an SV40 enhancer, and a CMV enhancer in this order.

Stabilized reverse transcriptase fusion proteins including a thermostable reverse transcriptase connected to a stabilizer protein are described. Attaching the stabilizer protein to the thermostable reverse transcriptase stabilizes the fusion protein and can aid in its purification, provide increased solubility, allow for longer storage, or allow the fusion protein to be used under more rigorous conditions such as higher temperature. The stabilized reverse transcriptase fusion protein can also include a linker between the stabilizer protein and the thermostable reverse transcriptase. The stabilized reverse transcriptase fusion proteins are suitable for use in nucleic acid amplification methods such as the reverse transcription polymerase chain reaction and other applications involving cDNA synthesis.

The invention belongs to vaccine and preparation thereof, in particular to a vaccine for preventing and curing tumor and preparation thereof. The vaccine is prepared by steps of: choosing a telomerase reverse transcriptase epitope sequence, serially connecting nucleotides the telomerase reverse transcriptase with multi-epitope, preparing the DNA vaccine of the telomerase reverse transcriptase with multi-epitope, and preparing the multi-epitope vaccine of the telomerase reverse transcriptase with multi-epitope. The invention overcomes the shortcomings that a single peptide vaccine only has a clinical effect in several tumor patients. After the vaccine has an immune body, the epitope specific CD4+T cells and the CD8+T cells can be activated. Under the assistance of the Th1 cell factor excreted from the CD4+T cells, the CD8+CTL can kill the tumor cell presenting TERT so as to prevent and cure tumor.

The invention relates to an ORFV virulence weakening method. A calf testicle cell line is utilized to carry out continuous passage culture of the ORFV, so that the ORFV virulence is weakened, thereby providing a stable and reliable method for preparing and producing an ORFV virulence weakening vaccine; and the method is used for obtaining abundant stable vaccines. The method disclosed by the invention comprises the following steps: 1) separating and initially culturing the ORFV; and 2) carrying out continuous passage culture on the ORFV in the calf testicle cell line until the virulence is weakened. In the step 1), the initial culture of the ORFV adopts the calf testicle cell line, and the culture fluid of the calf testicle cell line is M199, DMEM (Dulbecco Modified Eagle Medium) (high-sugar) and RPMI-1640 culture media. In the step 1), the ORFV is separated from lip scab of a sicken goat. In the step 2), the calf testicle cell line is prepared by introducing a telomerase reverse transcriptase (hTERT).

A method for enhancing the in vitro and in vivo lifespan of T cells is provided. A method for enhancing the life span of a T cell is provided. The method includes engineering the T cell to express exogenous ribonucleic acid (RNA), where the RNA includes a nucleic acid encoding telomerase reverse transcriptase (TERT). T cells genetically engineered to transiently express exogenous RNA which includes the coding sequence for TERT (TERT T cells) are provided. TERT T cells have one or more of the following characteristics when compared to a T cells not expressing TERT from an exogenously introducednucleotide: enhanced in vitro and in vivo proliferation, decreased number of senescent cells, and enhanced in vivo anti-cancer activity. The modified TERT T cells can be used in adoptive cell transfer to treat a subject in need thereof.

Methods and compositions are provided for modulating, and generally upregulating, the expression of telomerase reverse transcriptase (TERT) by blocking repression of TERT transcription, e.g., by inhibiting binding of repressor factor to a Site C repressor binding site located in the TERT minimal promoter. The subject methods and compositions find use in a variety of different applications, including the immortalization of cells, the production of reagents for use in life science research, therapeutic applications; therapeutic agent screening applications; and the like. In further describing the subject invention, the methods and compositions of the invention are described first in greater detail, followed by a review of the various applications in which the subject invention finds use.

The invention discloses a kit for detecting TERT (telomerase reverse transcriptase) gene mutation, and a detection method of the kit. The kit comprises an LNA (locked nucleic acid) modified specific probe for a TERT gene mutation site, wherein the specific probe can be combined with wild DNA (deoxyribonucleic acid), and can detect a sample containing 0.01% TERT gene mutation DNA; and a minimum detection limit is 2-5cp. The detection method for detecting the TERT gene mutation has the advantages of high specificity, high sensitivity, low pollution, simplicity and rapidness in operation, safety and the like, is especially suitable for detecting the gene mutation from body fluids containing low mutation content such as plasma, urine and saliva, is suitable for performing early screening and diagnosis on a bladder cancer, and provides guidance for personalized medicine.

The invention relates to a method for building the immortalized preadipocytes of chicken, which can be used for solving the problems that the stable and reliable result is difficult to obtain by the research as the preadipocytes of primary chicken can not go down to the future generation infinitely and is heterogeneous, cells with different sources have different genetic backgrounds, and the like. The method comprises the steps of firstly, cloning human chicken telomerase reverse transcriptase (chTERT) genes; secondly, cloning chicken telomerase (chTR) RNA genes; thirdly, constructing a reverse transcribing virus expression vector; fourthly, packaging and preparing reverse transcribing virus; and fifthly, obtaining an immortalized chicken preadipocyte system ICPA-1 and an immortalized chicken preadipocyte system ICPA-2. The method is applied to the field of building the immortalized preadipocytes of the chicken.

Methods and compositions are provided for modulating, e.g., increasing or decreasing, the expression of telomerase reverse transcriptase (TERT). In the subject methods, the binding interaction of the GC-Box 5 repressor site with a repressor protein (or protein complex including the same) is modulated to achieve the desired change in TERT expression. The subject methods and compositions find use in a variety of different applications, including the immortalization of cells, the production of reagents for use in life science research, therapeutic applications; therapeutic agent screening applications; and the like.

A compound of the formula (I), wherein: nuc is the residue of a nucleoside analogue bonded through its single hydroxy group on the cyclic or acyclic saccharide moiety, R1 is hydroxy, amino or carboxy; optionally having esterified/amide bonded thereon; a C4-C22 saturated or unsaturated, optionally substituted fatty acid or alcohol, or an aliphatic L-amino acid; R2 is the residue of an aliphatic L-amino acid; L1 is a trifunctional linker group; L2 is absent or a difunctional linker group; and pharmaceutically acceptable salts thereof have favourable pharmacological properties and are antivirally active.

Methods and compositions are provided for modulating, e.g., increasing or decreasing, the expression of telomerase reverse transcriptase (TERT). In the subject methods, the binding interaction of the TERT Site C repressor site with a Site C repressor protein complex made up of one or more proteins is modulated to achieve the desired change in TERT expression. A feature of the subject invention is that the target Site C repressor protein complex includes a MRG15 protein. The subject methods and compositions find use in a variety of different applications, including the immortalization of cells, the production of reagents for use in life science research, therapeutic applications; therapeutic agent screening applications; and the like.

The invention discloses a cell factor fusing protein of human terminal-enzyme reverse transcriptase (hTERT)/human leucocyte 18(hIL18), which is characterized by the following: targeting tumour cell to kill; improving immune effect for dendritic cell; expanding tumour-proof scale; reducing medical cost obviously; providing the base of treating vaccine for tumour.

The present invention relates to specific immortalized avian cell lines expressing telomerase reverse transcriptase (TERT), and exhibiting distinct biologics production patterns. More particularly, the present invention relates to immortalized avian cell line capable of either amplifying Flaviviridae but not capable of amplifying Vaccinia virus strain Copenhagen (W—COP) nor Modified Vaccinia virus Ankara (MVA), or capable of amplifying both Flaviviridae and Poxyiridae. The invention further relates to the use of said immortalized avian cell lines and related methods for producing biologics, including viruses and proteins.