CSHL scientists discover how 'companion' cells to sperm protect them from genetic damage
... sperm cells. There, they inactivate or "silence" transposon DNA via a phenomenon known as RNA interference. ... just enforce epigenetic reprogramming and transposon silencing in the next generation." Other ... of companion cells results in the control of transposon activity in the sperm. ...Plants display 'molecular amnesia'
... the maize plant "remembers," and keeps the transposon "silenced" generation after generation, even ... although the trigger works fine, and the transposon is silenced, once the trigger is lost, the transposon reawakens," said Jaswinder Singh, a professor in ...Methods for gene transfer in stem cells featured in Cold Spring Harbor Protocols
... safety concerns associated with viral vectors. Use of the "Sleeping Beauty transposon System for Stable Gene Expression in Mouse Embryonic Stem Cells" from ... transfection is a two-component system consisting of a transposase and a transposon containing inverted repeat/direct repeat sequences that result in precise ...CSHL scientists discover a new way in which epigenetic information is inherited
... is absent in lab strains. In hybrid dysgenesis, the transmission of the transposon by a parent induces sterility in the offspring unless the offspring also inherits a factor that suppresses the transposon and maintains fertility. Since the phenomenon had only been seen when the ...'Jumping genes' could make for safer gene delivery system
... minimize the insertional mutagenesis risk." Techniques for targeting transposon vectors to regions of the genome devoid of cancer genes are being refined. ... both technical and safety issues to be worked out in the development of transposon vectors before they could be tried in human therapy. But the use of such ...Singapore scientists elected into National Academy of Sciences
... a mutagenic transposon, a sequence of DNA that can move around to different positions within the genome of a single cell. In moving around, a transposon can cause mutations and change the amount of DNA in the genome. In addition, Drs. Copeland and Jenkins' group plans to use another whimsically ...Moving gene therapy forward with mobile DNA
... without success. We are glad that we could now overcome this hurdle' claims Thierry VandenDriessche. Zsuzsanna Izsvak and Zoltan Ivics concur: 'This transposon technology may greatly simplify the way gene therapy is conducted, improve its overall safety and reduce the costs'. The VIB researchers are ...CSHL researchers map changing epigenetic modifications that enable transposons to run amok
... immortalized cells -- cells that are coaxed to grow endlessly in culture dishes -- the epigenetic changes resulting in a loss of heterochromatin and transposon "re-activation" are not due to a loss of the proteins that regulate heterochromatin. Instead, they find that the epigenetic modifications are due to ...Consortium develops new method to manipulate genetic material
... for inactivation or repair. The potential for discovery is great, said Dan Voytas, Ph.D., director of the Arnold and Mabel Beckman Center for transposon Research, and co-investigator on the research. In human therapeutics, researchers may aim to correct genetic disorders or diseases, and in plants, ...RNA Interference and Gene Silencing: History and Overview
... and animals and has roles in viral defense and transposon silencing mechanisms. Perhaps most ... also demonstrate increased levels of transposon activity. Thus, silencing of transposons appears ... RH. (1999). Mut-7 of C. elegans , required for transposon silencing and RNA interference, is a ...GPS -M Mutagenesis System from New England Biolabs
Description:... transposition reaction. Notes: The Kanr marker on the Transprimer is not designed to express in Gram positive organisms or eukaryotic cells. transposon ends have stop codons in all frames, so translational fusions are ....EZ-Tn5 Transposase from EPICENTRE Biotechnologies
Description:... EZ-Tn5 Transposase is designed for use with our pMOD series of vectors as well as any EZ-Tn5 transposon ....HyperMu