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Cell Biology News
Thu, 21 Aug 2014 14:15:50 EDT
Hot-spring bacteria reveal ability to use far-red light for photosynthesis
Bacteria growing in near darkness use a previously unknown process for harvesting energy and producing oxygen from sunlight, scientists have discovered. The discovery lays the foundation for further research aimed at improving plant growth, harvesting energy from the sun, and understanding dense blooms like those now occurring on Lake Erie and other lakes worldwide.
Thu, 21 Aug 2014 14:14:49 EDT
How hummingbirds evolved to detect sweetness
Hummingbirds' ability to detect sweetness evolved from an ancestral savory taste receptor that is mostly tuned to flavors in amino acids. Feasting on nectar and the occasional insect, the tiny birds expanded throughout North and South America, numbering more than 300 species over the 40 to 72 million years since they branched off from their closest relative, the swift.
Thu, 21 Aug 2014 14:14:41 EDT
The marmoset animal model recapitulates disease symptoms of MERS infection in humans
A new article reports the first animal model that recapitulates the severe and sometimes lethal respiratory symptoms seen in human patients and suggests that the common marmoset will play an important role in the development effective countermeasures against Middle East respiratory syndrome corona virus.
Thu, 21 Aug 2014 12:48:35 EDT
Alternate mechanism of species formation picks up support, thanks to a South American ant
A newly discovered species of ant supports a controversial theory of species formation. The ant, only found in a single patch of eucalyptus trees on the São Paulo State University campus in Brazil, branched off from its original species while living in the same colony, something thought rare in current models of evolutionary development.
Thu, 21 Aug 2014 12:48:25 EDT
Viruses take down massive algal blooms, with big implications for climate
Humans are increasingly dependent on algae to suck up climate-warming carbon dioxide from the atmosphere and sink it to the bottom of the ocean. Now, by using a combination of satellite imagery and laboratory experiments, researchers have evidence showing that viruses infecting those algae are driving the life-and-death dynamics of the algae's blooms, even when all else stays essentially the same, and this has important implications for our climate.
Thu, 21 Aug 2014 10:24:33 EDT
Cellular biology of colorectal cancer: New Insight
A new role for the protein adenomatous polyposis coli (APC) in suppressing colorectal cancer -- the second-leading cause of cancer-related deaths in the U.S. -- has been outlined by new research, providing a better understanding of the illness. "It's not widely appreciated, but there is still plenty of cell growth going on in adults, with the colon being a good example," a researcher said. "On average, we shed and replace about 70 pounds of intestinal tissue annually, so you can imagine that this process requires exquisite control to prevent tumor formation."
Thu, 21 Aug 2014 09:06:45 EDT
Models to study polyelectrolytes developed, including DNA and RNA
A novel and versatile modeling strategy has been developed to simulate polyelectrolyte systems. The model has applications for creating new materials as well as for studying polyelectrolytes, including DNA and RNA. Polyelectrolytes are chains of molecules that are positively or negatively charged when placed in water. Because they are sensitive to changes in their environment, polyelectrolytes hold promise for use in applications such as drug delivery mechanisms.
Thu, 21 Aug 2014 09:00:09 EDT
Adherence to diet can be measured from blood
New results show that it's possible to assess dietary compliance from a blood sample. This is especially useful in controlled dietary intervention studies investigating the health benefits of specific diets. So far, such studies have mainly relied on the participants' self-reported dietary intake, which is often biased, making it more difficult to assess the real health benefits.
Wed, 20 Aug 2014 16:43:17 EDT
How lizards regenerate their tails: Researchers discover genetic 'recipe'
By understanding the secret of how lizards regenerate their tails, researchers may be able to develop ways to stimulate the regeneration of limbs in humans. Now, a team of researchers is one step closer to solving that mystery. The scientists have discovered the genetic “recipe” for lizard tail regeneration, which may come down to using genetic ingredients in just the right mixture and amounts.
Wed, 20 Aug 2014 16:43:15 EDT
Severing nerves may shrink stomach cancers: Botox injections slow growth of stomach tumors in mice
Nerves may play a critical role in stomach cancer growth and that blocking nerve signals using surgery or Botox® (onabotulinumtoxinA) could be an effective treatment for the disease. Stomach cancer is the fourth-leading type of cancer and the second-highest contributor to cancer mortality worldwide, with a 5-year survival rate of less than 25 percent.
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