Monkey lip smacks provide new insights into the evolution of human speech. Scientists have traditionally sought the evolutionary origins of human speech in primate vocalizations, such as monkey coos or chimpanzee hoots.
But unlike these primate calls, human speech is produced using rapid, controlled movements of the tongue, lips and jaw. Speech is also learned, while primate vocalizations are mostly innately structured. Next-generation epigenetic cancer pill shown to be safe in phase I trial. Scientists have shown that a brand new type of cancer pill that exploits the emerging field of epigenetics is safe for human use, according to a Phase I trial reported May 1 in Clinical Cancer Research.
Instead of targeting faults in the DNA code, the drug -- discovered in a collaboration between The Institute of Cancer Research (ICR) and Chroma Therapeutics -- targets cancer-causing errors in the way the body reads the DNA code. This second and equally important set of instructions takes the form of a series of chemical switches that determine whether genes are turned on or off, and ultimately what the cell will look like and how it will function. Epigenetics influence nature in many ways including the ability of a caterpillar to morph into a butterfly, even though its DNA does not change. Alterations in epigenetic control can also lead to cancer. Lead author Dr Udai Banerji from the ICR and The Royal Marsden says: "This is a new angle of attack against cancer. Oldest human ancestor found in lake sludge › News in Science (ABC Science)
News in Science Friday, 27 April 2012 AFP.
Move over DNA: Six new molecules can carry genes - life - 19 April 2012. Eben Bayer: Are mushrooms the new plastic? Fighting Fire With Fire: Vampire Bacteria Has Potential as Living Antibiotic. Listen to the UVA Today Radio Show report on this story by Fariss Samarrai: October 31, 2011 — A vampire-like bacteria that leeches onto specific other bacteria – including certain human pathogens – has the potential to serve as a living antibiotic for a range of infectious diseases, a new study indicates.
The bacterium, Micavibrio aeruginosavorus, was discovered to inhabit wastewater nearly 30 years ago, but has not been extensively studied because it is difficult to culture and investigate using traditional microbiology techniques. However, biologists in the University of Virginia's College of Arts & Sciences, Martin Wu and graduate student Zhang Wang, have decoded its genome and are learning "how it makes its living," Wu said. The bacterium "makes its living" by seeking out prey – certain other bacteria – and then attaching itself to its victim's cell wall and essentially sucking out nutrients. Researchers engineered molecule changes itself to detect and attack diseased cells. L.A. Cicero Christina Smolke Imagine if your doctor could look for cancer in your body just by checking for green glowing cells, alerting her to the presence of the disease. Imagine further that she could convince any cancerous cells in your body to commit suicide, while leaving your healthy cells unaffected.
In Friday's issue of Science, a Stanford researcher reported engineered biological "devices" that could one day offer these kinds of diagnostic and treatment options. These autonomous biological tools are called "sensor-actuator" devices because they sense what's happening in a cell and act upon what they detect. The researchers built these devices by combining different pieces of DNA into one long stretch. 100 - The Mapping of Humanitys Family Tree. NOAA Scientists Confirm BP Oil Spill Harms Dolphins and Deep-Sea Corals.
Scientists Find Sick Dolphins and Deep-Water Corals in Gulf of Mexico Oil Spill Zone Two groups of scientists say they have identified signs of poor health in dolphins and in deep-sea corals due to exposure to polluted water in the northern Gulf of Mexico where the Deepwater Horizon oil spill occurred nearly two years ago.
The deadly April 2010 disaster is the worst off-shore oil spill in U.S. history. A team of biologists assessing the health of a resident pod of dolphins in the Gulf’s Barataria Bay say their preliminary findings indicate the marine mammals are suffering from low body weight, anemia, low blood sugar, and symptoms of liver and lung disease. Exploiting the smell of genetically modified fear - StumbleUpon. 29 March 2012Last updated at 11:06 GMT.
Sleeper cells: How to fight bacteria that play dead - 28 March 2012 - New Scientist - StumbleUpon. Editorial: "Antibiotics are wonder drugs no more" TAKE a lawnmower to a field of grass and, with the blades on the right setting, you can raze it to the ground. It might look brutal, but all you are removing is the leaves. The roots remain. After the mower is gone, the plants start to grow again and within a few days, the field is back. It now looks as if bacteria have a similar trick up their sleeve. Bacteria found in fluid used to carry transplant organs. Bacteria use chat to play the prisoners dilemma game in deciding their fate. When faced with life-or-death situations, bacteria -- and maybe even human cells -- use an extremely sophisticated version of "game theory" to consider their options and decide upon the best course of action, scientists reported in San Diego March 27.
Logy Magazine. The major difference between plant and animal cells is the photosynthetic process, which converts light energy into chemical energy.
When light isn't available, energy is generated by breaking down carbohydrates and sugars, just as it is in animal and some bacterial cells. Two cellular organelles are responsible for these two processes: the chloroplasts for photosynthesis and the mitochondria for sugar breakdown. Multicellular Life Arises In A Test Tube. NORMAN, Okla. — Since humanity missed the big moment the first time around, biologists trying to understand the origins of complex life have coaxed single-celled microbes to evolve into multicellular forms capable of reproduction.
Common lab yeast normally live as single cells that bud off single-celled offspring. But challenging generations of yeast with conditions that make solo life tough led to spiky multicelled yeast forms within about two months, said Will Ratcliff of the University of Minnesota, Twin Cities. The experiment suggests going multicellular may happen more readily than previously thought, he told the Evolution 2011 conference June 18. Discovery Health &Can humans regrow fingers?& When a hobby-store owner in Cincinnati sliced off his fingertip in 2005 while showing a customer why the motor on his model plane was dangerous, he went to the emergency room without the missing tip.
He couldn't find it anywhere. The doctor bandaged the wound and recommended a skin graft to cover the top of his right-middle stub for cosmetic purposes, since nothing could be done to rebuild the finger. Months later, he had regrown it, tissue, nerves, skin, fingernail and all. Spray-on clothing Video. ExPASy Proteomics Server - StumbleUpon. Institute for Systems Biology: Home - StumbleUpon. Critical stage of embryonic development now observable. A novel approach in the study of the development of mammalian embryos was reported on February 14 in the journal Nature Communications. The research, from the laboratory of Professor Magdalena Zernicka-Goetz of the University of Cambridge, enables scientists to view critical aspects of embryonic development which was previously unobservable.
For several decades it has been possible to culture embryos from a single cell, the fertilised egg, to the blastocyst, a ball of some 64 cells all derived from the first by repeated rounds of cell division. Doing Biotech in My Bedroom - Technology Review - StumbleUpon. Do-it-yourself: Cathal Garvey, 26, poses in the biology laboratory he created in his mother’s spare bedroom. In a spare bedroom of his family’s house in County Cork, Ireland, Cathal Garvey is repeating the feats that led to the dawn of the biotechnology age. He’s growing bacteria.
He’s adding DNA. He’s seeing what happens. “To transform bacteria was once a huge deal, a new method,” he explains. Garvey, who is 26, dropped out of a PhD program at a big cancer lab two years ago. Garvey was still working toward his PhD when he tried his first at-home experiment: isolating pale-blue bioluminescent bacteria from squid he purchased from a Cork fishmonger. His goal, he says, is to show that biology can be done in an open-source fashion, and on a shoestring budget.