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Tag: "allowing" at biology news

Tamed 11,400 years ago, figs were likely first domesticated crop

...nation and is prevented from falling off the tree, allowing it to become soft, sweet, and edible. However, because such figs do not produce seeds, they are a reproductive dead end unless humans interfere by planting shoots from the parthenocarpic trees. "Once the parthenocarpic mutation occurred, humans must...

Mayo Clinic Cancer Center: Harnessing the measles virus to attack cancer

... viral propagation in the tumor with a blood test, allowing us to adjust the dosage to increase the likelihood of therapeutic benefit." Eligible candidates for the therapy will have glioblastoma multiforme that has progressed after surgery and radiation therapy, and be candidates for surgery. They also mu...

Light-sensitive photoswitches could restore sight to those with macular degeneration

...h UV light, the molecule kinks and pulls the plug, allowing ions to flow through the channel and activate the nerve cell. Green light unkinks it and replugs the channel, blocking ion flow. Isacoff said that this same photoswitch could be attached to a variety of proteins to push or pull them into various sh...

Researchers report technique for freezing and preserving genetically enhanced pig embryos

... note that their technique could prove valuable in allowing genetically enhanced swine to be transported as embryos across the country and throughout the world. Because many embryos are needed to produce a successful pregnancy in surrogate female pigs, this new procedure will enable workers to collect an ad...

Expanding waistlines triggered by your genes

... fat cells in place and frees expanding fat cells, allowing their spread and expansion underneath the skin. The study illustrates a relationship between the gene and obesity and metabolism. The MT1-MMP gene is specifically important in regulation of fat cell size and metabolic gene expression. When the gene ...

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

... a compromise: The cell lives, but at the price of allowing genetic mutations to be carried over in cell divis... help the body's cells maintain a crucial balance, allowing them to divide and multiply while keeping the mutation rate, and therefore the cancer risk, to a min...

Study provides first look at the 'birth' of a retina cell

...able to see retina cells during early development, allowing us to pinpoint the exact time at which rods are 'born,'" says Swaroop. "Because the cells have been tagged, we can watch them at each step as they develop into mature and functional rods." Kellogg scientists then purified the rods at various stages a...

Producing bio-ethanol from agricultural waste a step closer

...t is found in elephant faeces) into baker's yeast, allowing it to convert an important sugar type, xylose, into ethanol, thereby making the production of bio-ethanol from supplies of leftover materials possible. During his recent PhD research, Marko Kuyper greatly improved this method: people can now start ...

Study identifies substances in grapefruit juice that interact dangerously with some drugs

...monly consumed fruit juices, inhibits this enzyme, allowing more of these drugs to enter the body. It was originally assumed that the ingredients responsible for drug interactions were the flavonoids that give grapefruit juice its bitter taste. The new study shows that a group of chemicals called furanoco...

A surprise about our body clock

... were modified to carry a green fluorescent marker allowing researchers to easily track them. The researchers demonstrated that these bone marrow cells are quickly mobilized to the damaged heart region following a heart attack. Once in the damaged area, the cells produce chemicals that trigger the growth of n...

Healing the heart with bone marrow cells

... were modified to carry a green fluorescent marker allowing researchers to easily track them. The researchers demonstrated that these bone marrow cells are quickly mobilized to the damaged heart region following a heart attack. Once in the damaged area, the cells produce chemicals that trigger the growth of n...

MUHC announces a transplant first in Quebec

...cipline with a strong interest in transplantation, allowing us to successfully offer combined organ transplants within one institution." The world's first heart transplant was conducted less than forty years ago; complex combined transplants have only been conducted since the 1980's. Multi-organ transplants,...

Bacteria have their own immune system protecting against outside DNA

...other molecules can compete with the H-NS protein, allowing the disease-causing genes to be expressed. When the bacteria are in the environment, H-NS turns these genes off to avoid detrimental consequences if all the disease-causing genes were to be expressed at once. These findings give scientists new insig...

Drug dials down the energy within cells, UM researchers find

...hat maintains normal function while simultaneously allowing for initiation of a process that selectively kills...sm by which Bz-423 inhibits the enzyme while still allowing it to function. This is important because it suggests principles that may be useful for targeting ot...

DNA to the defense

...ly evolve and express new variants of VSG, thereby allowing the parasite to persist and spread through a population. In the current study, Sergio Callejas, a Marie Curie Research Fellow in Melville's laboratory and the first author on the manuscript, conducted a series of experiments to demonstrate that T...

Science captures the essence of fruit

...formation is fed back into the breeding programme, allowing naturally-bred new fruit varieties with desired traits to be quickly recognised amongst young breeding populations that frequently number in the tens of thousands. "However, it is also possible for us to isolate genes that produce desirable flavour...

Meth promotes spread of virus in HIV-infected users

...eptor called DC-SIGN, a "virus-attachment factor," allowing more of the virus to invade the immune system. "This finding shows that using meth is doubly dangerous," said Madhavan P.N. Nair, Ph.D., first author on the study, published in the online version of the Journal of Neuroimmune Pharmacology. The st...

Researcher gives hard thoughts on soft inheritance

...re more easily expressed than tightly wrapped DNA, allowing another mechanism for regulation of gene expression. The location of DNA within the nucleus also influences gene expression. "Epigenetics as soft inheritance in mammals puts us on a slippery slope that many people don't want to visit," Richards sa...

UCSD researchers develop 'smart petri dish'

...r light better, much like fog on a car windshield, allowing us to quickly detect which drugs may have adverse side effects when taken in combination with another," says Sailor. "You're not supposed to drink alcohol when taking acetaminophen, because the combination of the two is much more toxic to your liver ...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...ing agent could be attached to the small molecule, allowing a physician to monitor localization of a drug before arming the agent with the antibody molecule. ...

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