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Domain: biologynews.net
Stories and comments across the archive that link to biologynews.net.
Stories · 17
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Nanoscale Analysis Labs
FiReaNGeL writes "Imagine being able to rapidly identify tiny biological molecules such as DNA and toxins using less than a drop of salt water in a system that can fit on a microchip. It's closer than you might believe: in a paper appearing next week in PNAS, a team of researchers proves for the first time that a single nanometer-scale pore in a thin membrane can be used to accurately detect and sort different-sized polymer chains (a model for biomolecules) that pass through or block the channel. This could lead to rapid detection systems for pathogens and toxic chemicals." -
Apple Gene for Red Color Found
FiReaNGeL writes "Researchers have located the gene that controls the red color of apples — a discovery that may lead to bright new apple varieties. 'The red color in apple skin is the result of anthocyanins, the natural plant compounds responsible for blue and red colours in many flowers and fruits,' says the leader of the CSIRO. By identifying master genes that were activated by light, they were able to pinpoint the gene that controls the formation of anthocyanins in apples. 'As well as giving apples their rosy red hue, anthocyanins are also antioxidants with healthy attributes, giving us plenty of reasons to study how the biochemical pathway leading to apple color is regulated,' researchers said." -
NIH Confirms Protocol To Reverse Type 1 Diabetes
FiReaNGeL writes "In 2001, researchers at Massachusetts General Hospital demonstrated the efficacy of a protocol to reverse type 1 diabetes in diabetic mice. New data from a study performed at the National Institutes of Health provides additional confirmation of the ability to reverse type 1 diabetes and on the role of spleen cells in islet regeneration. Spleen cells appear to contribute to islet recovery more in mice who are older and with more advanced diabetes compared with younger mice with less advanced diabetes, in which regeneration of remaining islets may be the dominant mechanism." -
Tarantula Venom and Chili Peppers Share Receptor
FiReaNGeL writes "Scientists have discovered that venom from a West Indian tarantula has been shown to cause pain by exciting the same nerve cells in mice that sense high temperatures and the hot, spicy ingredient in chili peppers. The findings demonstrate that some plants and animals have evolved the same molecular strategy to deter predators — triggering pain by activating a specific receptor on sensory nerves. The research provides new tools to understand how these pain- and heat-sensing neurons work, and to help develop drugs that ease persistent pain." -
A Pacemaker Made From Your Own Cells
FiReaNGeL writes to tell us that researchers at the Children's Hospital in Boston are on the road to crafting a pacemaker from living cells instead of an artificial implant. From the article: "When the engineered tissue was implanted into rats, between the right atrium and right ventricle, the implanted cells integrated with the surrounding heart tissue and electrically coupled to neighboring heart cells. Optical mapping of the heart showed that in nearly a third of the hearts, the engineered tissue had established an electrical conduction pathway, which disappeared when the implants were destroyed. The implants remained functional through the animals' lifespan (about 3 years)." -
The Mini Dinosaurs from the Harz Mountains
FiReaNGeL writes "When unusually small dinosaur fossils were found in a quarry on the northern edge of the Harz Mountains in 1998, it was initially assumed that these were the remains of a group of young dinosaurs. This was a fallacy, as the Bonn palaeontologist, Dr. Martin Sander, recently discovered. At a maximum estimated weight of one tonne, they were only a fiftieth the weight of their closest relatives, the brachiosaurs, and thus by far the smallest of the giant dinosaurs which have ever been found." -
The World's Deepest Dinosaur
FiReaNGeL writes to tell us BiologyNews.net is reporting that Norway has uncovered their first set of dinosaur remains. The catch? They found it 2,256 meters below the ocean floor. From the article: "It is merely a coincidence that the remains of the old dinosaur now see the light of day again, or more precisely, parts of the dinosaur. The fossil is in fact just a crushed knucklebone in a drilling core - a long cylinder of rock drilled out from an exploration well at the Snorre offshore field." -
Vaccine Effective Against Avian Flu
FiReaNGeL writes "Researchers announced they have genetically engineered an avian flu vaccine from the critical components of the deadly H5N1 virus that completely protected mice and chickens from infection. This virus has thus far killed 80 people, devastated bird populations in Southeast Asia and Europe and caused for billions in damage through the world." Here's hoping it works on us, too. -
Ingredients in Beer as a Cancer Treatment?
ThePuceGuardian writes to tell us Biology News Net is reporting that one of the compounds found only in hops has gained rapid notice as a micronutrient that may help prevent many types of cancer. From the article: "Quite a bit is now known about the biological mechanism of action of this compound and the ways it may help prevent cancer or have other metabolic value. But even before most of those studies have been completed, efforts are under way to isolate and market it as a food supplement. A "health beer" with enhanced levels of the compound is already being developed." -
Open source Digital Bacteria
FiReaNGeL writes "Scientists have constructed a software capable of simulating organisms at the molecular, single-cell and population levels. The program, called AgentCell, will soon be available, open sourced under a BSD license. "With AgentCell we can simulate the behavior of entire populations of cells as they sense their environment, respond to stimuli and move in a three-dimensional world". The researchers have designed their digital bacterial system in modules, so that additional components may be added later - "The hope is that people will modify the code or add some new capabilities". AgentCell has possible applications in cancer research, drug development and combating bioterrorism. Lots of movies and pictures are available, along with a detailed press release describing the program." -
Monkeys Adapt Robot Arm as Their Own
FiReaNGeL writes "Neurobiologists from the Duke University Medical Center are training monkeys to use their brain signals to control a robotic arm; but they are not just learning to manipulate an external device. Rather, "their brain structures are adapting to treat the arm as if it were their own appendage", via a brain-implanted chip. "The finding has profound implications both for understanding the extraordinary adaptability of the primate brain and for the potential clinical success of brain-operated devices to give the handicapped the ability to control their environment", said the researchers. Read the story here with full details." -
Monkeys Adapt Robot Arm as Their Own
FiReaNGeL writes "Neurobiologists from the Duke University Medical Center are training monkeys to use their brain signals to control a robotic arm; but they are not just learning to manipulate an external device. Rather, "their brain structures are adapting to treat the arm as if it were their own appendage", via a brain-implanted chip. "The finding has profound implications both for understanding the extraordinary adaptability of the primate brain and for the potential clinical success of brain-operated devices to give the handicapped the ability to control their environment", said the researchers. Read the story here with full details." -
Gene Therapy Corrects Hemophilia in Mice and Dogs
FiReaNGeL writes "Researchers successfully corrected hemophilia, the oldest known hereditary bleeding disorder, in dogs and mice. They introduced the gene coding for clotting factor VIII, which is defective in type A hemophilia, in the liver of newborn animals. All animals achieved expression of the clotting factor, averaging 139 and 115 percent of normal factor VIII activity and are stable after more than a year. The treatment targeted newborns exclusively for two reasons; their liver is still developing and their immune system is immature, facilitating the gene transfer. Researchers plan to perform tests in higher primates in the next few years. A summary of the research and the reference to the original paper are available." -
Touching Molecules With Your Bare Hands
FiReaNGeL writes "Researchers at the Scripps Institute just devised an incredibly interactive way to manipulate complex molecules, such as proteins and DNA, with your bare hands. Combining 3D printed hand-held objects with sophisticated computer displays & cameras, this technology allow more natural and intuitive interactions with biological molecules - you can manipulate them with your hands and visualize the results on the computer in real time. Don't miss the incredibly cool movies and images illustrating the 3D printing process and augmented reality interaction with diverse proteins, viral self-assembly simulation and HIV-1 protease folding. A detailed press release is available." -
Touching Molecules With Your Bare Hands
FiReaNGeL writes "Researchers at the Scripps Institute just devised an incredibly interactive way to manipulate complex molecules, such as proteins and DNA, with your bare hands. Combining 3D printed hand-held objects with sophisticated computer displays & cameras, this technology allow more natural and intuitive interactions with biological molecules - you can manipulate them with your hands and visualize the results on the computer in real time. Don't miss the incredibly cool movies and images illustrating the 3D printing process and augmented reality interaction with diverse proteins, viral self-assembly simulation and HIV-1 protease folding. A detailed press release is available." -
World's First True Blue Rose, Thanks to Biotech
FiReaNGeL writes "Researchers from CSRIO achieved the holy grail of rose breeders since 1840 - breeding a blue rose. Using RNAi technology, they knocked down the red pigment gene and introduced a blue pigment producing one. The result is the world's first true blue rose - no word about whether it'll be commercially available or not. A factsheet describing the technique and a detailed summary are available." -
World's First True Blue Rose, Thanks to Biotech
FiReaNGeL writes "Researchers from CSRIO achieved the holy grail of rose breeders since 1840 - breeding a blue rose. Using RNAi technology, they knocked down the red pigment gene and introduced a blue pigment producing one. The result is the world's first true blue rose - no word about whether it'll be commercially available or not. A factsheet describing the technique and a detailed summary are available."