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Tag: "artificial" at biology news

Chemists create 'Superbowl' molecule; May lead to better health

...ety. The superbowl molecule belongs to a class of artificial bowl-shaped molecules that were first developed in the 1980s to mimic naturally occurring enzymes, which facilitate molecular synthesis and transport within the body. Over the years, these bowl-shaped molecules have been extensively studied and refin...

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

...a few millimetres thick, which is fine for growing artificial skin,but if you wanted to grow cartilage, for instance, it would beimpossible," Professor Derby says.The key to the advance which Professor Derby and his team have made isthe innovative way in which they are able to pre-determine the size andshape of...

Priming embryonic stem cells to fulfill their promise

...ng liver cells fromembryonic stem cells to make an artificial liver. She plans to seekfunding to further her artificial liver research from the newCalifornia Institute for Regenerative Medicine. The institute wascreated ...

Termites feed through good vibrations

...s that trigger attention ?that may prove useful in artificial intelligence. CSIRO entomologist Theo Evans says ...reference to the large blocks. Prof Lai created an artificial signal similar to that made by the termites chewing the large block, which Dr Evans broadcast into s...

Inexpensive, mass-produced genes core of synthetic biology advances at UH

...oduce energy, neutralize toxins and make drugs and artificial genesthat could eventually be used in gene therapy procedures. Gene therapyis a promising approach to the treatment of genetic disorders,debilitating neurological diseases such as Parkinson’s and endocrinedisorders such as diabetes. This technology m...

U-M scientist to talk about tissue engineering at AAAS

...engineering refers to growing human tissue through artificial means. Typically it involves harvesting a small sample of cells, treating them in the lab, then reintroducing the cells into a damaged area, like a jaw bone damaged too badly to simply heal on its own. A tiny scaffold helps direct the engineered cel...

Study finds more than one-third of human genome regulated by RNA

...ers are shutting off genes by deliveringinto cells artificial microRNA-like molecules called siRNAs. RNAi hasalready transformed how many labs are investigating gene functions, andsiRNAs are being developed for clinical applications. Learning moreabout how microRNAs operate in human cells should help scientists...

NYU researchers simulate molecular biological clock

...ers are shutting off genes by deliveringinto cells artificial microRNA-like molecules called siRNAs. RNAi hasalready transformed how many labs are investigating gene functions, andsiRNAs are being developed for clinical applications. Learning moreabout how microRNAs operate in human cells should help scientists...

Critical role in programmed cell death identified

...entation in cell death have been done under rather artificial conditions, in tissue culture, not using natural cell death stimuli, " Conradt explains. "Our work was done in vivo; in the worm. We looked at cells that normally die, so it's more solid." ...

Genetically modified natural killer immune cells attack, kill leukemia cells

...owing NK cells so they carried on their surface an artificial receptor that made them particularly aggressive an...tein that binds to a specific target molecule. The artificial receptor on the NK molecule was designed to recognize a protein called CD19, which is found on the s...

The Bacteria's guide to survival

...he pili were responsible. They then showed that an artificial mechanical pull on the host cell membrane could trigger a signaling cascade in the host cells to affect the host's gene expression. Many of the genes that increased in activity due to the tugs were already known to regulate apoptosis and cellular re...

UCSD team discovers specialized, rare heart stem cells in newborns

...al devices, human and synthetic tissue grafts, and artificial and animal derived valves to surgically repair heart defects. While progenitor cells won't grow a whole new heart, our research has shown that they can spontaneously become cells from specific parts of the heart by simple co-exposure to other heart c...

Artifical cornea lets woman blind 20 years see

...oring her closely following the implantation of an artificial cornea, or keratoprosthesis, into one of her eyes ...hundred patients nationwide who have received such artificial corneas, which have revolutionized the treatment and care of patients like her. "I was blind for tw...

Substance protects resilient staph bacteria

...le who receive medical implants such as catheters, artificial joints and heart valves. A substance found on the surface of Staphylococcus epidermidis has, for the first time, been shown to protect the harmful pathogen from natural human defense mechanisms that would otherwise kill the bacteria, according to sc...

To control germs, scientists deploy tiny agents provocateurs

...of certain microorganisms, scientists are creating artificial chemicals that infiltrate and sabotage bacterial "mobs." Reporting the work here today (March 13) at the 229th national meeting of the American Chemical Society, University of Wisconsin-Madison chemistry professor Helen Blackwell described the ongoi...

Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells

...owing NK cells so they carried on their surface an artificial receptor that made them particularly aggressive an...tein that binds to a specific target molecule. The artificial receptor on the NK molecule was designed to recognize a protein called CD19, which is found on the s...

Nano-bumps could help repair clogged blood vessels

...n are found on conventional materials used to make artificial joints. The smaller features also stimulate the gr...ue, which is critical for the proper attachment of artificial joints once they are implanted. Now the biomedical engineers have seen the same kind of increased a...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...recorded by scientist Joyce Poole in Kenya; and an artificial warble tone. A shaker was once again buried near the waterhole and wired to a tape deck in the tower. All three sounds were randomly played through the shaker at different times to see if the elephants could recognize them as distinct vibrations. "We...

Taking the piste out of Alpine vegetation

...'s Journal of Applied Ecology, machine grading and artificial snow production is causing significant changes in ...udes," they say. They also measured the impact of artificial snow on vegetation and found that this causes changes in species composition, with snowbed and late-...

UCLA scientists store materials in cells natural vaults

...tion. Previous efforts have relied upon viruses or artificial chemicals to house and deliver drugs or other substances to targeted cells. RESEARCH: Scientists at the David Geffen School of Medicine at UCLA have exploited thousands of tiny capsules in cells to store vast amounts of biomaterial. Dubbed vaults ?f...

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