New CRISPR class expands genetic engineering toolbox

Biomedical engineers have used a previously unexplored CRISPR technology to accurately regulate and edit target genes in human cells. With this new approach, the researchers hope to dramatically expand the CRISPR-based tools available to biomedical engineers, opening up a new and diverse frontier of genome engineering technologies.

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Older adults with COPD more likely to use synthetic cannabinoids

Chronic obstructive pulmonary disease (COPD) is a progressive lung disease that's often associated with a variety of health problems, including chronic muscle pain and insomnia. Psychoactive drug classes, like cannabinoids, are often prescribed to help reduce pain, promote sleep and decrease breathlessness. A study has found that older adults with COPD were twice as likely to use prescription synthetic oral cannabinoids compared to older adults without COPD, raising safety concerns.

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Better samples, better science: New study explores integrity of research specimens

Biological samples can be highly susceptible to changes over time, which often occur when they are removed from deep refrigeration. Degraded samples can produce spurious results in research. To address these concerns, scientists have designed a highly sensitive test that can be used to establish the integrity of blood plasma and serum, the most common biosamples used in medical research.

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Capturing extreme close-ups of cellular gene expression

Scientists studying genetic transcription are gaining new insights into a process that is fundamental to all life. Transcription is the first step in gene expression, the process taking place within all living cells by which the DNA sequence of a gene is copied into RNA, which in turn (most generally speaking) serves as the template for assembling protein molecules, the basic building blocks of life.

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DNA is held together by hydrophobic forces

Researchers have disproved the prevailing theory of how DNA binds itself. It is not, as is generally believed, hydrogen bonds which bind together the 2 sides of the DNA structure. Instead, water is the key. The discovery opens doors for new understanding in research in medicine and life sciences.

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Researchers investigate key component in bacteria

A protective protein that detects newly-made incomplete protein chains in higher cells is found to have a relative in bacteria. There, the protein also plays a central role in quality control which ensures that defective proteins are degraded. The functional mechanism of these Rqc2 proteins must therefore have already existed several billion years ago in the so-called last universal common ancestor. Scientists have experimentally investigated the bacterial Rqc2 relative's function.

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Innovative candidate drug against malaria

A molecule once designed to cure the skin disease psoriasis appears to be particularly effective against malaria. The antimalarial properties were revealed thanks to one researcher's inspired hunch when the psoriasis drug discovery program came to a dead end. The candidate drug offers considerable potential for combating this infectious disease.

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