Genetically Modified

Genetically Modified News -- ScienceDaily Genetically modified food, crops and GMO issues. Read current science articles on genetic engineering including mice with glowing hearts, disease-resistant mosquitos, GM bacteria chips and more.

  • Gut bacterium indirectly causes symptoms by altering fruit fly microbiome
    on October 19, 2017 at 6:27 pm

    CagA, a protein produced by the bacterium Helicobacter pylori, can alter the population of microbes living in the fruit fly gut, leading to disease symptoms, according to new research. […]

  • Scientists find where HIV 'hides' to evade detection by the immune system
    on October 19, 2017 at 2:08 pm

    In a decades-long game of hide and seek, scientists have confirmed for the very first time the specific immune memory T-cells where infectious HIV 'hides' in the human body to evade detection by the immune system. […]

  • Obesity: Engineered proteins lower body weight in mice, rats and primates
    on October 18, 2017 at 7:18 pm

    Researchers have created engineered proteins that lowered body weight, bloodstream insulin, and cholesterol levels in obese mice, rats, and primates. […]

  • Nature or nurture? Innate social behaviors in the mouse brain
    on October 18, 2017 at 5:29 pm

    The brain circuitry that controls innate, or instinctive, behaviors such as mating and fighting was thought to be genetically hardwired. Not so, neuroscientists now say. […]

  • Turning brain cells into skin cells
    on October 18, 2017 at 3:35 pm

    A new study reveals that it is possible to repurpose the function of different mature cells across the body and harvest new tissue and organs from these cells. […]

  • 'Hiding in plain sight:' Discovery raises questions over scale of overlooked biodiversity
    on October 17, 2017 at 1:19 pm

    Scientists have used cutting edge DNA technology to demonstrate that one of Europe's top freshwater predators is actually two species rather than one. […]

  • New way to prevent genetically engineered and unaltered organisms from producing offspring
    on October 12, 2017 at 1:10 pm

    A major obstacle to applying genetic engineering to benefit humans and the environment is the risk that organisms whose genes have been altered might produce offspring with their natural counterparts, releasing the novel genes into the wild. Now, researchers have developed a promising way to prevent such interbreeding. The approach, called 'synthetic incompatibility,' effectively makes engineered organisms a separate species unable to produce viable offspring with their wild or domesticated relatives. […]

  • Gene drives have the potential to suppress mosquito populations, but resistant mosquitoes crop up
    on October 10, 2017 at 2:57 pm

    Researchers successfully built a gene drive to reduce female fertility in the mosquito that spreads malaria, but mutations gradually arose that blocked the spread of the new genes. […]

  • Pest resistance to biotech crops surging
    on October 10, 2017 at 2:51 pm

    Pest resistance to genetically engineered crops Bt crops is evolving faster now than before, researchers show in the most comprehensive study to date. But as expected from evolutionary theory, resistance can be delayed if farmers comply with recommendations to make use of abundant refuges. […]

  • Designer biosensor can detect antibiotic production by microbes
    on October 3, 2017 at 6:45 pm

    Researchers from North Carolina State University have engineered designer biosensors that can detect antibiotic molecules of interest. The biosensors are a first step toward creating antibiotic-producing 'factories' within microbes such as E. coli. […]

  • GM soybean oil causes less obesity and insulin resistance but is harmful to liver function
    on October 2, 2017 at 12:48 pm

    Researchers have tested a genetically-modified soybean oil used in restaurants and found that while it induces less obesity and insulin resistance than conventional soybean oil, its effects on diabetes and fatty liver are similar to those of conventional soybean oil, the major vegetable cooking oil used in the United States, with popularity on the increase worldwide. The study also compares the GM soybean oil to coconut and olive oils. […]

  • Disease resistance successfully spread from modified to wild mosquitoes
    on September 28, 2017 at 6:54 pm

    Using genetically modified mosquitoes to reduce or prevent the spread of disease is a rapidly expanding field of investigation. One challenge is ensuring that GM mosquitoes can mate with their wild counterparts so the desired modification is spread in the wild population. Investigators have engineered mosquitoes with an altered microbiota that suppresses human malaria-causing parasites. These GM mosquitoes preferred to mate with wild mosquitoes and passed the desired protection to offspring. […]

  • Smart molecules trigger white blood cells to become better cancer-eating machines
    on September 28, 2017 at 6:21 pm

    A team of researchers has engineered smart protein molecules that can reprogram white blood cells to ignore a self-defense signaling mechanism that cancer cells use to survive and spread in the body. Researchers say the advance could lead to a new method of re-engineering immune cells to fight cancer and infectious diseases. The team successfully tested this method in a live cell culture system. […]

  • Fluorine-containing molecules from cell cultures
    on September 28, 2017 at 4:16 pm

    Natural organic compounds that contain fluorine are rare because living organisms -- with a few exceptions -- do not produce them. Scientists have now genetically engineered a microbial host for organofluorine metabolism, allowing it to produce a fluoridated intermediate known as a diketide. As reported, the diketide could then be used as a monomer for the in vivo production of fluorinated bioplastics. […]

  • Haplobank: A biobank of reversible mutant embryonic stem cells
    on September 27, 2017 at 5:38 pm

    Scientist have developed a biobank of revertible, mutant embryonic stem cells – called Haplobank - which contains over 100,000 mutated, conditional mouse embryonic stem cell lines, targeting about 70% of the protein-coding genome. […]

  • Scientists unlock mysteries of how Ebola uses people's immune defenses to cause infection
    on September 26, 2017 at 4:51 pm

    Scientists have gained new insight into how the Ebola virus uses the body's natural defenses to speed the rate of infection and unleash its lethal disease, according to a new report. […]

  • Cells programmed like computers to fight disease
    on September 18, 2017 at 1:33 pm

    Cells can be programmed like a computer to fight cancer, influenza, and other serious conditions -- thanks to a breakthrough in synthetic biology. […]

  • Breaking through the wall in bacterial membrane vesicle research
    on September 7, 2017 at 1:36 pm

    Researchers used advanced imaging techniques to investigate the formation of membrane vesicles in a Gram-positive bacterium, a process that is poorly understood, particularly in bacteria with thick cell walls. The consortium showed that membrane vesicle formation was triggered by an enzyme called endolysin that damages the cell wall to create holes that allow the release of membrane vesicles. This mechanism could be exploited for the mass production of bacterial vesicles. […]

  • This one goes up to 11: Researchers crack code for genetic 'control dials'
    on September 6, 2017 at 3:46 pm

    Scientists have developed a new technique to crack the underlying DNA code for the 'control dials' that determine levels of gene activity in bacteria. The discovery has important implications for biotechnology, because genetically engineered bacteria and other organisms are used to produce useful molecules such as new materials and drugs. […]

  • Gut bacteria that 'talk' to human cells may lead to new treatments
    on August 30, 2017 at 6:12 pm

    Scientists developed a method to genetically engineer gut bacteria to produce molecules that have the potential to treat certain disorders by altering human metabolism. […]

  • Nano chip system measures light from single bacterial cell to enable chemical detection
    on August 30, 2017 at 1:42 pm

    Researchers have created a nanophotonic chip system using lasers and bacteria to observe fluorescence emitted from a single bacterial cell. The novel system paves the way for an efficient and portable on-chip system for diverse cell-based sensing applications, such as detecting chemicals in real-time. […]

  • Rhapsody in red violet
    on August 15, 2017 at 3:11 pm

    A new study has now opened the way to numerous potential uses of betalains, the highly nutritious red-violet and yellow pigments known for their antioxidant properties and commonly used as food dyes. […]

  • New methods for analyzing gene function
    on August 10, 2017 at 4:04 pm

    Scientists have developed new methods to produce and analyze genetic mosaics. In these mosaics, tissues contain various groups of cells with different known genotypes, permitting study of the differences that these genotypes generate in cell behavior. […]

  • Multi-nutrient rice against malnutrition
    on August 8, 2017 at 6:59 pm

    Researchers have developed a new rice variety that not only has increased levels of the micronutrients iron and zinc in the grains, but also produces beta-carotene as a precursor of vitamin A. This could help to reduce micronutrient malnutrition, or 'hidden hunger,' which is widespread in developing countries. […]

  • Magnetized viruses attack harmful bacteria
    on August 1, 2017 at 7:43 pm

    Antibacterial phages combined with magnetic nanoparticle clusters effectively kill infectious bacteria found in water treatment systems. A weak magnetic field draws the clusters into biofilms that protect the bacteria and break them up so the phages can reach them. […]

  • Safely releasing genetically modified genes into the wild
    on August 1, 2017 at 5:12 pm

    So, you've genetically engineered a malaria-resistant mosquito. Now what? How many mosquitoes would you need to replace the disease-carrying wild type? What is the most effective distribution pattern? How could you stop a premature release of the engineered mosquitoes? Applied mathematicians and physicists used mathematical modeling to guide the design and distribution of genetically modified genes that can both effectively replace wild mosquitoes and be safely controlled. […]

  • Unjustified delays in approving biotech crops take thousands of lives, say researchers
    on July 28, 2017 at 2:17 am

    Uncertainty and confusion on genetic engineering of main food crops in Africa have delayed the acceptance and application of these crops by smallholder farmers in sub-Saharan Africa, say researchers. Model calculations reveal that the costs of a one year delay in approving the pod-borer resistant cow-pea in Nigeria will cost the country 33 -- 46 million dollars, and more disastrously, will take theoretically 100 to 3000 lives, the team reports. […]

  • Crops that kill pests by shutting off their genes
    on July 27, 2017 at 2:45 pm

    Plants are among many eukaryotes that can 'turn off' one or more of their genes by using a process called RNA interference to block protein translation. Researchers are now weaponizing this by engineering crops to produce specific RNA fragments that, upon ingestion by insects, initiate RNA interference to shut down a target gene essential for life or reproduction, killing or sterilizing the insects. […]

  • Chatting coordinates heterogeneity in bacteria
    on July 26, 2017 at 2:30 pm

    Bacterial populations can, under certain conditions, react in a coordinated manner to chemical messages produced by a minority of their members, as a new theoretical study carried out by biophysicists shows. […]

  • Gene drives likely to be foiled by rapid rise of resistance
    on July 20, 2017 at 6:22 pm

    A study in fruit flies suggests that existing approaches to gene drives using CRISPR/Cas9, which aim to spread new genes within a natural population, will be derailed by the development of mutations that give resistance to the drive. […]