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Mechanisms Of Cancer-causing Mutations Uncovered

Mechanisms Of Cancer-causing Mutations Uncovered

Researchers at the San Diego Supercomputer Center (SDSC) and the Moores Cancer Center at the University of California, San Diego, have described for the first time the molecular mechanism of cancer development caused by well-known "resistance" mutations in the gene called epidermal growth factor receptor (EGFR). While these mutations were known for quite a long time, the question as to why they cause cancer or make some drugs ineffective was still not answered.
The study demonstrates how computer modeling of EGFR mutations found in lung cancer can elucidate their molecular mechanism of action and consequently optimize the selection of therapeutic agents to treat patients.

World's First Method For Continuous Purification Of Valuable Antibodies

World's First Method For Continuous Purification Of Valuable Antibodies

Without antibodies we would be at the mercy of pathogens or cancer cells. Therapeutic antibodies are used as passive vaccines, for cancer therapy or for controlling autoimmune diseases such as multiple sclerosis. According to "bccresearch.com" the global market for antibody drugs was worth nearly 70 billion USD in 2014 and should rise to 122 billion USD until 2019.
Two thirds of those molecules are produced biotechnologically using Chinese hamster ovary cells (CHO). Actually the major cost factor for industry is purification using "protein A" affinity chromatography where tens of thousands of liters of culture volume have to be processed annually. About 80 % of the production costs fall upon purification.

Comparative Genomics Shows Squid Optimize DNA 'Blueprint' Through RNA Editing

Comparative Genomics Shows Squid Optimize DNA 'Blueprint' Through RNA Editing

Humans, worms and flies are all completely different organisms and yet we have a more or less common set of genes. Given that similar DNA blueprint, how do species develop such vast differences in physical shape, size, and complexity?One so-called "central dogma" of molecular biology says that genetic information passes faithfully from genomic DNA to messenger RNA to the synthesis of proteins but a new study finds that such information can be significantly altered along the way by a variety of means, including by precision "editing" at the RNA stage to fine-tune the type of proteins that will be produced. 

New Insight On Asthma And COPD

New Insight On Asthma And COPD

In diseases such as asthma and chronic obstructive pulmonary disease (COPD), the body produces too much mucus, making breathing difficult. New research from Washington University School of Medicine in St. Louis provides clues to potentially counteract inappropriate mucus production.
"The new study lays the groundwork for developing treatments for diseases such as asthma, COPD, cystic fibrosis and even certain cancers," said senior author Thomas J. Brett, PhD, assistant professor of medicine. "It also solves a 20-year mystery about the role of a protein that has long been associated with these diseases."

Maternal Genes And Letting Go Of The DNApron Strings

Maternal Genes And Letting Go Of The DNApron Strings

How does a mother transition genetic control to offspring early in development? It's part of a larger mystery regarding how embryos regulate cell division and differentiation into new types of cells.A new article in Cell provides some insight into the mechanism for this genetic hand-off, which happens within hours of fertilization, when the newly fertilized egg is a zygote.

Not Cro-Magnon, Volcanoes May Have Doomed Neanderthals

Not Cro-Magnon, Volcanoes May Have Doomed Neanderthals

A new paper notes that the Campanian Ignimbrite eruption in Italy 40,000 years ago, one of the largest volcanic cataclysms in Europe and responsible for injecting a significant amount of sulfur-dioxide (SO2) into the stratosphere, coincided with the final decline of Neanderthals as well as with dramatic territorial and cultural advances among modern humans.  Scientists have long debated if this eruption and the resulting volcanic sulfur cooling and acid deposition could have contributed to the final extinction of the Neanderthals more than climate change or hominin competition. A new paper tests this hypothesis using a climate model. 

Leading Theory Of What Causes Ice Ages Cast Into Doubt

Leading Theory Of What Causes Ice Ages Cast Into Doubt

The leading theory of what causes ice ages around the world -- changes in the way the Earth orbits the sun- has been cast into doubt by a new study.
The study raises questions about the Milankovitch theory of climate, which says the expansion and contraction of Northern Hemisphere continental ice sheets are influenced by cyclic fluctuations in solar radiation intensity due to wobbles in the Earth's orbit; those orbital fluctuations should have an opposite effect on Southern Hemisphere glaciers.

Power Naps Produce Significant Memory Performance Boost

Power Naps Produce Significant Memory Performance Boost

A new study finds that even a brief nap can significantly improve memory retention of learned material.Saarland University
graduate student Sara Studte, PhD supervisor Axel Mecklinger and co-researcher Emma Bridger have examined how power naps influence memory performance.

Medications Used To Treat Diabetes May Trigger Heart Failure

Medications Used To Treat Diabetes May Trigger Heart Failure

A comprehensive study examining clinical trials of more than 95,000 patients has found that glucose or sugar-lowering medications prescribed to patients with diabetes may pose an increased risk for the development of heart failure in these patients.

Schools Blamed For Lack Of Female Role Models In STEM

Schools Blamed For Lack Of Female Role Models In STEM

The annual Rethink Media conference was held yesterday at Birmingham City University to address the future of the digital landscape and the challenges facing the sector and, predictably, there was plenty of blame to go around, and assurances that the answers were simple - but as usual when panels get together to lament the future, no one was doing anything.Schools got the brunt of the cultural shame and blame.“Schools need to fix the fact that technology is not being made aspirational for females”, urged Talk Talk’s Head of Digital, Rahul Chakkara. “Half of the talent is being lost at school level.”

Consistency Is The Key To Success In Bread Baking And Biology

Consistency Is The Key To Success In Bread Baking And Biology

Whether you're baking bread or building an organism, the key to success is consistently adding ingredients in the correct order and in the right amounts, according to a new genetic study by University of Michigan researchers.
Using the baker's yeast Saccharomyces cerevisiae, Patricia Wittkopp and her colleagues developed a novel way to disentangle the effects of random genetic mutations and natural selection on the evolution of gene expression. Their findings are scheduled for online publication in the journal Nature on March 16.