Gene switch

An optogenetic upgrade for the tet - OFF system fused the inhibitor to the blue light-responsive B-LID degron and optimized the performance of this construct with regard to the number of Med25VBD repeats. This approach resulted in an optogenetic upgrade of the popular Tet-OFF (TetR-VP64, tetO7-PhCMVmin)  system  that  allows tunable, blue light-inducible gene expression in HEK-293T  cells.

5p thuyancn 01-06-2015 30 5   Download

High-Level Recombinant Protein Production in CHO Cells Using Lentiviral Vectors and the Cumate Gene-Switch developed  an efficient system to generate in less than 2 months, starting from the cDNA, pools of CHO cells stably expressing high-level of recombinant  proteins. It is based on lentiviral vectors (LVs) for stable transduction coupled with the cumate gene-switch for inducible and efficient gene expression.

13p thuyancn 01-06-2015 35 3   Download

Pyruvate dehydrogenase kinase 4 (PDK4) is a key regulatory enzyme involved in switching the energy source from glucose to fatty acids in response to physiological conditions. Transcription of the PDK4gene is activated by fasting or by the administration of a PPARaligand in a tis-sue-specific manner.

12p inspiron33 26-03-2013 50 3   Download

Regulated expression of transgene is essential in basic research as well as for many therapeutic applications. The main purpose of the present study is to understand the functioning of the ecdysone receptor (EcR)-based gene switch in mammalian cells and to develop improved versions of EcR gene switches.

14p inspiron33 23-03-2013 27 3   Download

In plants, regulation of transgene expression is typically accomplished through the use of inducible promoter systems. The ecdysone receptor (EcR) gene switch is one of the best inducible systems available to regulate transgene expression in plants.

16p media19 06-03-2013 38 3   Download

Regulated gene expression may substantially enhance gene therapy. Corre-lated with structural differences between insect ecdysteroids and mamma-lian steroids, the ecdysteroids appear to have a benign pharmacology without adversely interfering with mammalian signaling systems. Conse-quently, the ecdysone receptor-based gene switches are attractive for appli-cation in medicine.

21p media19 04-03-2013 36 5   Download

The mechanisms underlying increased cardioprotection in younger female mice are unclear. We hypothesized that serine-threonine protein kinase (protein kinase B; Akt) triggers a metabolic gene switch (decreased fatty acids, increased glucose) in female hearts to enhance mitochondrial bio-energetic capacity, conferring protection against oxidative stress.

7p media19 04-03-2013 22 3   Download

A set of thirty-two natural and ten semisynthetic ecdysteroids was assayed in murine 3T3 cells across ten different ecdysteroid receptor (EcR) ligand-binding domains derived from nine arthropod species in an engineered gene switch format. Among the ecdysteroids tested, the most biologically wide-spread ecdysteroid, 20-hydroxyecdysone (20E), was moderately and consis-tently potent across the tested EcRs.

25p vinaphone15 28-02-2013 33 2   Download

Time-dependent regulation analysis is a new methodology that allows us to unravel, both quantitatively and dynamically, how and when functional changes in the cell are brought about by the interplay of gene expression and metabolism. In this first experimental implementation, we dissect the initial and late response of baker’s yeast upon a switch from glucose-lim-ited growth to nitrogen starvation.

16p viettel02 20-02-2013 42 5   Download

Gene switches have potential applications for the regulation of transgene expression in plants and animals. Recently, we have developed a two-hybrid ecdysone receptor (EcR) gene switch using chimera 9 [CH9, a chi-mera between helices 1–8 ofHomo sapiensretinoid X receptor (HsRXR) and helices 9–12 ofLocusta migratoriaRXR (LmRXR)] as a partner for Choristoneura fumiferanaEcR (CfEcR).

11p viettel02 19-02-2013 32 2   Download

Activation-induced deaminase (AID) initiates switch recombination and somatic hypermutation of immunoglobulin genes in activated B cells. Compelling evidence now shows that AID travels with RNA polymerase II to deaminate actively transcribed DNA. reports deposited research A common mechanism for class-switch recombination and somatic hypermutation In all cells, high-fidelity pathways repair DNA to maintain the integrity of the genome. A handful

0p thulanh21 15-11-2011 35 2   Download