EAST LANSING, Mich. — Humans could learn from how plants handle stress.
Federica Brandizzi, Michigan State University plant biologist, is using a grant from the National Institutes of Health to study how plants overcome stress as they grow. These pathways used to overcome stress are a key to growth. Without them plants, and animals, would die.
“When cells grow, they undergo trauma as growth is quite stressful,” Brandizzi said. “Since it’s very likely that these pathways have much in common between humans and plants, we should be able to gain insights into how plants and animals overcome stress and continue to grow as well.” (more…)
UCLA researchers have discovered a type of cell that is the “missing link” between bone marrow stem cells and all the cells of the human immune system, a finding that will lead to a greater understanding of how a healthy immune system is produced and how disease can lead to poor immune function.
The research was done using human bone marrow, which contains all the stem cells that produce blood during post-natal life. (more…)
COLUMBUS, Ohio – Some RNA molecules spend time in a restful state akin to hibernation rather than automatically carrying out their established job of delivering protein-building instructions in cells, new research suggests.
And instead of being a fluke or a mistake, the research suggests that this restful period appears to be a programmed step for RNA produced by certain types of genes, including some that control cell division and decide where proteins will work in a cell to sustain the cell’s life.
This could mean that protein production in cells is not as clear-cut as biology textbooks suggest, scientists say. (more…)
In a new paper in the Proceedings of the Royal Society B, scientists propose that the bony structures in the skin of many early four-legged creatures might have been there to relieve acid buildup in bodily fluids. Analysis of their anatomy suggests that as they ventured out of water, the animals would have had trouble getting rid of enough CO2 to prevent acid buildup.
PROVIDENCE, R.I. [Brown University] — Here’s an anatomical packing list for making that historic trip from water to land circa 370 million years ago: Lungs? Check. Legs? Check. Patches of highly vascular bone in the skin? In a new paper, scientists propose why many of the earliest four-legged creatures that dared breathe on land carried bony skin features. (more…)
Clogging of pipes leading to the heart is the planet’s number one killer. Surgeons can act as medical plumbers to repair some blockages, but we don’t fully understand how this living organ deteriorates or repairs itself over time.
Researchers at the University of Washington have studied vessel walls and found the cells pull more tightly together, reducing vascular leakage, in areas of fast-flowing blood. The finding could influence how doctors design drugs to treat high cholesterol, or how cardiac surgeons plan their procedures. (more…)
At the level of proteins, organisms can adapt by editing their RNA — and an editor can even edit itself. Brown University scientists working with fruit flies found that “locking down” the self-editing process at two extremes created some strange behaviors. They also found that the process is significantly affected by temperature.
PROVIDENCE, R.I. [Brown University] — Because a function of RNA is to be translated as the genetic instructions for the protein-making machinery of cells, RNA editing is the body’s way of fine-tuning the proteins it produces, allowing us to adapt. The enzyme ADAR, which does this editing job in the nervous system of creatures ranging from mice to men, even edits itself. In a new study that examined the self-editing process and locked it down at two extremes in fruit flies, Brown University scientists found some surprising insights into how this “fine-tuning of the fine-tuner” happens, including bizarre behavioral effects that come about when the self-editor can’t edit. (more…)
*Carolyn Bertozzi’s Kavli Lecture Highlights Promise of Biorothogonal Chemistry and Its Links to Basic Research From the Past*
“Bioorthogonal chemistry is literally chemistry for life,” said Carolyn Bertozzi, an internationally acclaimed leader and founder of this emerging and highly promising field of science that could fundamentally change drug development and disease diagnostics. In delivering the Kavli Foundation Innovations in Chemistry Lecture at this year’s Spring Meeting of the American Chemical Society (ACS) in San Diego, Bertozzi described how her own ground-breaking research made use of experiments nearly a century ago by two German chemists whose work was driven primarily by scientific curiosity as opposed to the more problem-driven research of today.
Bertozzi is a senior faculty scientist with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the T.Z. and Irmgard Chu Distinguished Professor of Chemistry and Professor of Molecular and Cell Biology at the University of California (UC) Berkeley. She is also an investigator with the Howard Hughes Medical Institute (HHMI). The Kavli Foundation is a philanthropic organization that supports basic scientific research. Its ACS lectures are designed to address “the urgent need for vigorous, outside the box thinking by scientists.” (more…)
A genetic finding could help to explain why influenza becomes a life-threatening disease for some people, and yet has only a mild effect on others. Collaborative research led by scientists at UCL and the Wellcome Trust Sanger Institute found that people who carry a particular variant of the IFITM3 gene are significantly more likely to be hospitalised when they fall ill with influenza than those who carry other variants.
The gene plays a critical role in protecting the body against infection with influenza and a rare version of it appears to make people more susceptible to severe forms of the disease. The results are published in the journal Nature. (more…)
