Sentences with phrase «foreign genes»

But there has been a snag: Introducing foreign genes into a cell can cause cancer.

Indeed, because eggs are large cells that are relatively easy to manipulate, they are one of the favored cell types used by biologists to express foreign genes and to test gene function.

Thirty years ago, a race was under way to figure out how to efficiently get foreign genes into plants.

Scientists and companies can now change the DNA in cells, for example, by adding foreign genes or changing the letters in the existing genes.

When Voinnet joined the Pierre and Marie Curie University in Paris in 1992 for a master's degree program, biologists had just started to report puzzling observations in which foreign genes inserted in plants were actually shut down.

GFP also helps scientists track the introduction of foreign genes into DNA, a strategy used to create transgenic models to study cancer, diabetes, and other diseases.

By expressing foreign genes in target cell types, they hope to be able to specifically silence or activate cells of interest.

Introducing foreign genes into muscles, he says, «is going to produce changes in the way muscles secrete things into the blood and, therefore, into the urine.»

In only 1 percent of the bdelloid genome, Meselson found dozens of foreign genes from bacteria, plants, and fungi inserted among the native nucleotides.

A transgenic mouse — one with foreign genes swapped into its DNA — poses with its own gene sequence at Harvard Medical School.

Crispr, the programmable part, is the mechanism by which bacteria identify and target foreign genes introduced by viruses.

UPDATE: It appears that tardigrades may not be transferring foreign genes into their own as much as some scientists think.

The bacterium Agrobacterium tumefaciens — which can cause tumors on plants — shuttled foreign genes into plant genomes.

Researchers in Scotland and colleagues say foreign genes may account for less than 1 percent of the genome of the famously hardy critters, technically known as tardigrades (Hypsibius dujardini).

Adenoviruses can deliver foreign genes into mammalian cells, but within 3 to 4 weeks the immune system kills cells that have taken up the virus.

In fact, molecular breeding is only the start of a bewildering diversity of biotech approaches to crop development that defy the conventional notion of splicing foreign genes into plants.

«If we can stop the incoming flow of foreign genes while maintaining an environment similar to what was there pre-hybridization, wild populations are likely to recover — possibly in less time than previously thought,» he says.

Using advanced biotechnology, long hidden in the background and only now starting to pay dividends, scientists are changing crops without tapping foreign genes — and often without the regulatory oversight that is given to GM crops.

The researchers, led by pathologist Matthew Meyerson and his colleagues at Harvard Medical School in Boston, used this disease as a test case for detecting foreign genes.

Although the piglets were not directly engineered themselves, they may have acquired foreign genes from the milk.

Drawing upon the cell culture expertise of Noriyoshi Sakai, Ph.D., and Kayoko Kurita, of Fukui Prefectural University, the Japanese - U.S. team developed a system that enables immature sperm cells, or spermatagonia, taken from male zebrafish to survive long enough in vitro that they can receive foreign genes inserted by a retrovirus.

A GMO food has had foreign genes forced into its DNA.

One of the biggest advantages of the cultured sperm approach is that transgenic zebrafish created in this way carry the inserted, foreign gene in every cell of their bodies, including their germ cells.

«This work is a real surprise,» says Jef Boeke, a molecular geneticist at Johns Hopkins University, who adds that it represents a «really important «integration machine» for getting foreign genes into target cells.»

They simply used the jellyfish gene, which is easily detected, to test whether inserting foreign genes into eggs (so - called germline gene alteration) can produce viable monkeys.

Oxitec's Aedes aegypti mosquitoes have been genetically engineered to carry two foreign genes.

Such methods include cell fusion, microencapsulation and macroencapsulation, and recombinant DNA technology (including gene deletion, gene doubling, introducing a foreign gene, and changing the positions of genes when achieved by recombinant DNA technology).»

The researchers inserted 25 foreign genes into the one - celled fungus to turn it into an efficient factory for producing the drug.

Surveillance organizations like the U.S. and world antidoping agencies «will look for those signatures and patterns that can be tied, with confidence, to the existence of a foreign gene,» Friedmann says.

Besides the low efficiency of cloning — just 1.7 per cent of embryos came to term — another challenge to creating transgenic dogs is controlling where in the nuclear DNA a foreign gene lands.

Scientists have cloned three calves that carry a foreign gene.

Our aim was to study how «foreign genes» worked in these inappropriate hosts.

But not all cells take up foreign genes.

Mice pretreated with these engineered APCs expressed a foreign gene for 50 days after adenovirus infection, more than twice as long as in untreated mice.

They then injected the amalgam of the two foreign genes into fertilised mouse eggs, producing eight transgenic mice.

Last week, however, the Philippines» Department of Agriculture gave the green light to YieldGard, a corn variety developed by seed giant Monsanto and approved in the U.S. that carries a foreign gene from the soil bacterium Bacillus thuringiensis (Bt).

Surveillance organizations like the U.S. and world agencies «will look for those signatures and patterns that can be tied, with confidence, to the existence of a foreign gene,» Friedmann says.

Horsager says the algal genes were only expressed in the target cells, and that there is no evidence of an immune response in the mice, suggesting that the transfer of the foreign gene has been restricted to the bipolar cells.

But Blaxter and colleagues soon called that assertion into question, as their tardigrade genome showed hardly any foreign genes (SN Online: 12/8/15).

They inserted the cassette into a circular piece of DNA called a plasmid and allowed it to be taken up by another bacterium, Escherichia coli, which then started using the foreign genes, an indication that they had inserted into E. coli's own integron.

Marc Van Montagu (left), Mary - Dell Chilton (center), and Robert Fraley have won the 2013 World Food Prize for their work that showed how to use a ring of DNA, called a plasmid, to insert foreign genes i

Each of the awardees — Van Montagu, Robert Fraley of Monsanto, and Mary - Dell Chilton at the University of Washington — figured out how to use Agrobacterium to swap foreign genes into plants.

Nevertheless, Agrobacterium is still industry's tool of choice for shuttling in foreign genes, says Johan Botterman, head of product research at Bayer BioScience in Ghent, Belgium.

Other techniques under development insert foreign genes into designated sites in the genome, unlike the near - random scattering generated by Agrobacterium.

So the team fortified the bug with four foreign genes that enable it to break down organic substances.

And Agrobacterium is not essential either; foreign genes can be fired into plant cells on metal particles shot from a «gene gun».

It turns out that within five to 11 generations of fish (about 25 to 50 years), the foreign genes introduced into wild populations through hybridization are removed by natural selection.

Most of those foreign genes don't do anything, having degenerated into pseudogenes.

He studied plasmids, tiny ringlets of DNA that genetic engineers use to insert foreign genes into bacteria.

Charles Zukoski, Urbana - Champaign's vice chancellor of research, said that the school notified FDA of its intention to test the piglets and sell those that tested negative for foreign genes to a livestock dealer.