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Tag: "coax" at biology news

Plastic that grows on trees

...day and Heather Brown, all from PNNL, were able to coax HMF yields upward of 70 percent from glucose and nearly 90 percent from fructose while leaving only traces of acid impurities. To achieve this, they experimented with a novel non-acidic catalytic system containing metal chloride catalysts in a solven...

Fighting influenza & co. with 40,000 blood samples

... to test new approaches on the animals in order to coax maximum performance from the immune system of older animals. If the immune system begins to flag with age, this could also be due to a long-forgotten infection. A suspected culprit is the virus causing Pfeiffer's glandular fever, for example. Due ...

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

...ancers that are not virally based, in an effort to coax the immune system into attacking cancerous cells. Today at the 2007 Annual Meeting of the American Association for Cancer Research, presentations on ongoing HPV trials and other new approaches to stimulating the immune system are injecting momentum ...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

...one: the team demonstrated that it is possible to coax embryonic stem cells in a test tube to differentiate into hair cells - and then also to have the stem cells differentiate after transplantation in the ears of chicken embryos. The two different approaches - new drugs and stem cell transplants - ...

Ultrathin films deliver DNA as possible gene therapy tool

...ltiple DNA- or protein-based agents is required to coax cells to develop into functional tissues and organs. "Our long-term goal is to develop materials useful for localized gene therapy," he says. ...

Dopamine used to prompt nerve tissue to regrow

...pair a broken circuit. The neurotransmitters could coax the neurons in the damaged nerves to regrow and reconnect with their target organ. Strange though his idea might have seemed to others in his field, Wang, an assistant professor in the Wallace H. Coulter Department of Biomedical Engineering at Geo...

Who gives stem cells their marching orders?

...lular signaling dance is crucial to our ability to coax stem cells to grow into specific tissues outside the body. And it is also important if we are to understand and perhaps correct what goes wrong when the chemical signaling system goes awry and stem cells become cancerous. Research has shown that th...

Rescuing injured hearts by enhancing regeneration

...Children's Hospital Boston, showed that they could coax cardiomyocytes to multiply in a petri dish by inhibiting an enzyme known as p38 MAP kinase, which normally suppresses cardiomyocyte replication. [See: www.childrenshospital.org/newsroom/Site1339/mainpageS1339P1sublevel139.html ] Engel and Keating...

Researchers make nanosheets that mimic protein formation

... a human hair. Scientists have long known how to coax nanoparticles into forming sheets, Glotzer said. But those sheets have only been achieved when the particles were on a surface or at an interface between two fluids, never while suspended in a single fluid. The work started in Kotov's lab three y...

UCSD researchers discover internal compass of immune cell

... systems and the internal compass could be used to coax neutrophils to migrate to infected wounds to improve wound healing. ...

MIT creates 3-D scaffold for growing stem cells

...ed active motifs, the scaffold can be fashioned to coax stem cells to behave in certain desirable ways-such as differentiating into needed body tissues or migrating toward bone marrow and other natural destinations. "What makes these designer scaffolds particularly interesting is that cells survive lon...

MIT researchers build tiny batteries with viruses

...w genes inside these viruses, the team was able to coax the organisms to grow and self-assemble into a functional electronic device. The goal of the work, led by MIT Professors Angela Belcher, Paula Hammond and Yet-Ming Chiang, is to create batteries that cram as much electrical energy into as small or l...

Findings advance use of adult stem cells for replacement bone

...cause of the science ?researchers found they could coax bone cells into produce up to 75 times more calcium ?but also because the study was conducted by an undergraduate bioengineering senior, Néha Datta. "These results are important, not just because they hold great promise for regenerating healthy bone...

Testes to incubate stem cells

...g for the ideal conditions and nutrients that will coax spermatogonial stem cells into becoming sperm. So far, they have found that growth factors GDNF and fibroblast growth factor (FGF) seem to be necessary to enhance cell growth. The team's next move is to transplant monkey and human cells into the mous...

MIT chemist discovers secret behind nature's medicines

... already knew that a particular enzyme was able to coax a reaction out of stubborn chemical concoctions to generate a large family of medically valuable compounds called halogenated natural products. The question was, how do they do it? Chemists would love to have that enzyme's capability so they could e...

Picking particles faster than one at a time

...ssible to obtain otherwise. Instead of trying to coax molecules to arrange themselves in a repeating crystalline structure, as is necessary for x-ray crystallography, cryo-EM uses individual molecules frozen in random orientations. Capturing two-dimensional images of the molecule from many different ang...

Researchers make long DNA 'wires' for future medical and electronic devices

...cal diagnostics. But Lee and Guan are the first to coax strands of DNA into structures that are at once so orderly and so complex that they resemble stitches on a quilt. "These are very narrow, very long wires that can be designed into patterns for molecular electronics or biosensors," Lee said. "And in ...

New technique multiplies life span in simple organisms

...s of aging, they will be able to design drugs that coax the body into entering chosen aspects of a starvation-response mode, such as stress resistance, even when food is plentiful. If enough food is available, an organism might be programmed both to reproduce normally and to maximize its survival systems...

Researchers discover key to human embryonic stem-cell potential

...peutic goal then is to take these blank slates and coax them into, say, liver or brain tissue. But in order to guide them out of pluripotency with efficiency, we need to know what keeps them there to begin with. Researchers in the Whitehead laboratories of Young, Rudolf Jaenisch, MIT-computer scientist ...

Fish and chips: A fast track to understanding blood development

...rary of Science Biology. "If we can find a way to coax blood stem cells to self-renew and thus expand in the laboratory, doctors will have more options in treating diseases such as blood disorders, leukemias, and lymphomas," said Catherine Verfaillie, M.D., director of the University's Stem Cell Institut...

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