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Tag: "researcher" at biology news

Ancient amphibians evolved a bite before migrating to dry land

...ly, like a crocodile," says Markey, a postdoctoral researcher and lecturer in Harvard's Department of Earth and Planetary Sciences. "A biting or chewing motion would result in a faint pushing together of the frontal bones in the skull, while a sucking motion would pull those bones ever so slightly apart. By com...

New cell type identified in cancer development

...t a team of scientists, led by Dr. Jian-Xin Gao, a researcher in the department of pathology at Ohio State University Medical Center, has identified a new set of cells he calls precancerous stem cells (pCSCs). These cells share some of the characteristics full-fledged cancer stem cells have, but they are dif...

Destructive enzyme shows a benevolent side

...essor of molecular and cellular biochemistry and a researcher with Ohio State's Comprehensive Cancer Center. "By understanding how PMR1 and similar enzymes are incorporated into stress granules and inactivated, we may be able to learn how to block this protective mechanism and make it harder for cancer cells...

UBC researchers reveal dwarf aquatic plants' hidden ancestry

...ity," says Sean Graham, an associate professor and researcher with the UBC Botanical Garden and Centre for Plant Research in the Faculty of Land and Food Systems. "And it took DNA sequence evidence coupled with a critical re-examination of anatomy to assign these plants to their proper place in the plant evolut...

Cancer vaccines -- Taking a jab at cancer by stimulating the immune system

... cancer," said Andrew Lepisto, Ph.D, post-doctoral researcher in the University of Pittsburgh’s Department of Immunology. "While we are unlikely to run large-scale trials with this particular form of the vaccine due to difficulty in its manufacturing, we have learned a tremendous amount from the subjects that b...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...ene, the one which generates enterocin AS-48", the researcher from Granada pointed out, "and we have studied the role of seven amino acids that could be involved in biological activity and in the hydrophobic nature and thermodynamic stability of the molecule. We made this study by changing the amino acids into ...

Protein sensor for fatty acid buildup in mitochondria

...r of energy demand," said Yong-Mei Zhang, Ph.D., a researcher in the Infectious Diseases department at St. Jude and the report's senior author. "This is an ideal location for PanK2 because it can detect acylcarnitine as it enters the mitochondrion." The importance of PanK2 is especially evident in individua...

RNA enzyme structure offers a glimpse into the origins of life

...mistry at UC Santa Cruz. Scott and postdoctoral researcher Michael Robertson determined the structure of a ribozyme that joins two RNA subunits together in the same reaction that is carried out in biological systems by the protein known as RNA polymerase. Their findings are published in the March 16 issue of...

Cancer tip -- Nanoparticles can damage DNA, increase cancer risk

...havoc, according to Sara Pacheco, an undergraduate researcher at the University of Massachusetts. Yet very little is known about how they behave in the environment or how they interact with and affect humans. "Unfortunately, only a very small portion of research on nanoparticles is focused on health and sa...

Dual gene therapy suppresses lung cancer in preclinical test

...f Thoracic and Cardiovascular Surgery and a senior researcher on the project. The genes wrapped in the nanoparticles were p53, a well-known tumor suppressor that works by causing defective cells to commit suicide and is often shut down or defective in cancer cells, and FUS1, a tumor-suppressor discovered by...

Trojan horse strategy defeats drug-resistant bacteria

...as developed by a group led by Bradley Britigan, a researcher at the University of Cincinnati and a co-author on this study. The general approach of targeting stresses already applied by natural defense mechanisms could be a promising new way to treat infections. "We badly need new approaches to fight bacte...

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

...and Matthew Rablen, (a former Warwick postgraduate researcher now a government economist), is published this month in a study entitled "Mortality and Immortality". The researchers carried out their study in order to try to answer a long-standing question for economists and medical researchers as to whether s...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

...res of the beads," explained Shuming Nie, the head researcher on the project and the Wallace H. Coulter Distinguished Chair in Biomedical Engineering and director of Emory-Georgia Tech Nanotechnology Center. The beads are mixed in a liquid such as urine. Viruses, proteins or other biomarkers are captured on...

Application of Genomatix in silico methods reveals novel cancer associated genes

...adquarter in Munich (Germany), released today that researcher in Dublin, Ireland and Boston, U.S.A. identified novel cancer associated genes, based on strategies and products developed and promoted by Genomatix. Experimental verification by siRNA knock-down and RT-PCR confirmed the in silico results. "I am del...

Penn researchers replace organ in adult mice using 'single-parent' stem cells

...ofessor in Penn's Department of Animal Biology and researcher at the Center for Animal Transgenesis and Germ Cell Research at Penn's New Bolton Center. "The fact that we are not destroying a viable embryo in the process also avoids certain ethical issues that currently surround embryonic stem cell science." ...

The origin of the brain lies in a worm

...it must be the same system," adds Gáspár Jékely, a researcher from Arendt's lab, who contributed essentially to the study. "It looks like Platynereis and vertebrates have inherited the organisation of their CNS from their remote common ancestors." The findings provide strong evidence for a theory that was fir...

Studies yield insight into the numerical brain

...ns were really reacting to numerical quantity, the researcher occasionally injected a "deviant stimulus" into the second presentation of a quantity as the brain was adapting to it. This deviant stimulus consisted of a different number that was either close to, or far from, the number being presented. The resear...

Uganda's mountain gorillas increase in number

...lla population,?said Wildlife Conservation Society researcher Dr. Alastair McNeilage, who is also the director of the Institute of Tropical Forest Conservation in Bwindi. “There are very few cases in this world where a small population of a endangered primates is actually increasing.? According to the census...

Largest genomic search finds genes that may contribute to autism

...s a highly likely candidate," said Schellenberg, a researcher at the Puget Sound Veterans Affairs Medical Center and a research professor of medicine at the UW. "It is a protein that enables one neuron to contact another neuron. Often you don't have any idea of what a gene does, but in this case we know neure...

Buckyballs used as 'passkey' into cancer cells

...h the membrane, directly into the cell," said lead researcher Andrew Barron. "Viruses, which are often toxic, long ago developed ways of sneaking through cell walls. While we're mimicking some techniques used by viruses, we're using non-toxic pieces of protein, and we're incorporating buckyballs as a passkey." ...

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