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E.g., 10/19/2017
E.g., 10/19/2017
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  • Australian bearded dragons
  • aging mice
  • environmental exposures
Your search has returned 24 articles:
  • News

    How bearded dragons switch their sex

    When things get hot, embryonic bearded dragon lizards turn female — and now scientists might know why. New analyses, reported online June 14 in Science Advances, reveal that temperature-induced changes in RNA’s protein-making instructions might set off this sex switch. The findings might also apply to other reptile species whose sex is influenced by temperature.

    Unlike most mammals, many...

    06/14/2017 - 14:07 Development, Animals, Genetics, Epigenetics
  • News

    Proteins that reprogram cells can turn back mice’s aging clock

    Four proteins that can transform adult cells into embryonic-like ones can also turn back the aging clock, a new study in mice suggests.

    Partial reprogramming of cells within prematurely aging mice’s bodies extended the rodents’ average life span from 18 weeks to 24 weeks, researchers report December 15 in Cell. Normal mice saw benefits, too: Muscles and pancreas cells healed better in...

    12/15/2016 - 12:00 Epigenetics, Health, Cells
  • News

    Epigenetic marks may help assess toxic exposure risk — someday

    Nearly everything people do, eat or come into contact with can change them in little ways — sometimes with big consequences. Exposure to some chemicals can damage DNA, leading to cancer and other problems. Other molecular changes—chemical tags added to DNA or to proteins called histones — may affect health without injuring DNA.

    There are more than 100 varieties of these chemical tags,...

    12/09/2016 - 06:00 Epigenetics, Toxicology
  • Science Ticker

    Plants might remember with prions

    There’s no known mad plant disease. But prions — which show their dark side in mad cow disease — may occur in plants as a form of memory.

    Prions are proteins that change shape and shift tasks, and then trigger other proteins to make the same change. Inheriting prions lets cells “remember” and replicate that shift in form and function. Now a protein called luminidependens, which is...

    04/25/2016 - 15:00 Plants, Epigenetics, Cells
  • Science Ticker

    Dads pass health effects of stress on to sons, mouse study finds

    A father’s stress may directly affect his son’s health.

    In mice, males exposed to repeated psychological stress developed high blood sugar — and so did their unstressed male offspring, researchers report online February 18 in Cell Metabolism.  Stress appeared to alter chemical tags on the DNA in a male’s sperm. These epigenetic tweaks were then passed onto male pups, which produced...

    02/19/2016 - 07:00 Epigenetics, Health
  • Science Ticker

    Ants’ size and profession controlled by chemical tags on DNA

    Chemical modifications to DNA determine what carpenter ants do for a living.

    Florida carpenter ant (Camponotus floridanus) workers have two main career paths. Around one-third of workers are big, brawny soldiers called majors. Most other workers are smaller food-seekers called minors. Majors and minors are closely related, but majors forage far less. This behavioral difference is the...

    12/31/2015 - 14:00 Animals, Epigenetics
  • Feature

    Year in review: Epigenome makes its debut

    In a landmark event more than a decade ago, geneticists unveiled the human genetic instruction book. This year, the book was turned into a movie adaptation in 3-D: Researchers cataloged how chemical modifications fold, compress and unwind the static DNA over time and how those modifications control when genes are on or off. 

    The crew of researchers involved in the Roadmap Epigenomics...

    12/15/2015 - 06:56 Epigenetics, Genetics, Cells
  • News

    Chemical tags on DNA appear to differ between gay and straight men

    BALTIMORE — Molecular tests may be able to distinguish homosexual from heterosexual men, a small study of twins suggests.

    Chemical modifications to DNA that change the activity of genes without changing the genes’ information differ between homosexual and heterosexual men, researchers from UCLA David Geffen School of Medicine have discovered. Results of the unpublished study on the link...

    10/08/2015 - 17:27 Genetics, Epigenetics
  • Feature

    Priya Rajasethupathy: Memories mark DNA

    Priya Rajasethupathy, 31Stanford | NeuroscienceGraduate school: Columbia

    View the video

    Priya Rajasethupathy’s research has been called groundbreaking, compelling and beautifully executed. It’s also memorable.

    Rajasethupathy, a neuroscientist at Stanford University, investigates how the brain remembers. Her work probes the molecular machinery that governs memories. Her most...

    09/22/2015 - 10:57 Neuroscience, Science & Society, Genetics, Epigenetics
  • Mystery Solved

    Bad Karma can ruin palm oil crops

    Palm oil producers thought they had licked shortages of edible oil and biofuel in the 1980s, when they learned to make genetically identical copies of high oil-yielding palms. But when the cloned palms matured, some plants made shriveled fruits with very little oil. Exactly how these dry, “mantled” fruits spawned from twins of oil-gushing palms has been a mystery ever since.

    Oil-barren...

    09/11/2015 - 12:26 Epigenetics, Plants