signal 2 4

Tag: "signal" at biology news

Study finds adult stem cells can replicate

...arrange and cluster on the cell surface can send a signal back into the cell that modifies the cell's behavior, allowing it to do things like secrete inflammatory factors," Pham explains. "The proteases' ability to affect integrin rearrangement is dependent on their catalytic activity, and that's an ability...

UNC plant researchers discover proteins interact to form hair-trigger protection against invaders

...SGT1 and HSP90 -- were required for what is called signal transduction -- relaying like Paul Revere the message that an enemy had arrived, Dangl said. Instead, they are needed to form an even earlier disease surveillance antenna or hair trigger. When disease invaders pull that trigger, infected plants cells...

FDA approves more generic AIDS drugs

...SGT1 and HSP90 -- were required for what is called signal transduction -- relaying like Paul Revere the message that an enemy had arrived, Dangl said. Instead, they are needed to form an even earlier disease surveillance antenna or hair trigger. When disease invaders pull that trigger, infected plants cells...

Bioinformatics reveals new gene regulation system

... bacteria, identifying not only a highly conserved signal sequence, but also the regulatory transcription fa...designated the sequence the NrdR-box. Because the signal was found in so many diverse groups of bacteria, the researchers thought it might represent a univer...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

... the length of and time between the movements that signal the embryos to hatch. Undisturbed, red-eyed tree frog eggs usually hatch six to eight days after fertilization, but can hatch up to 30 percent earlier if attacked by animals such as snakes or wasps. At her open-air laboratory at the Gamboa Field St...

Newly discovered genetic disease sheds light on body's water balance

...in-coupled receptors (GPCR), which are involved in signal transduction and are responsible for many physiological processes. Normally, when vasopressin binds to the V2R, it stimulates a chain of events inside the cell. Vesicles containing the water channel Aquaporin 2 (AQP-2) are shuttled from the cytoplas...

New defibrillator signals doctor of patient's irregular heartbeat or device malfunction

...plantable cardioverter defibrillator (ICD) sends a signal to a satellite via a small transmitter that can be...ity Health System, Maywood, Ill. The notification signal is automatically generated, even if the patient is unaware of any problems. The doctor can program ...

Researchers develop new method for facile identification of proteins in bacterial cells

...noise to find the signal, our method increases the signal upfront so that it stands out above the background noise. By forcing an up-regulation of enzyme expression in the bacterium of interest, our target can be identified amidst all of the other cell components," he said. Halden and his colleagues tested...

New tool reveals secrets of migrating cells

...bout how cells explore their environment, how they signal to each other, and how they migrate." Robey and p...bserve cells that we believe have already gotten a signal beelining away," Robey said of her studies in the thymus, the immune system gland that weans baby T ...

Tufts researchers shine light on firefly mysteries

... further our understanding of human communication, signal evolution, and biomedicine. In previous research ...cted to males who give longer flashes because that signal indicates males that can provide better nutrition for their offspring. But the Tufts research team h...

Researchers seek to discover what really happens when a virus enters the body

...ystem using the electrical engineering concepts of signal and image processing. As Duca, a biophysicist, introduces viruses into cells in a laboratory dish, she infects only the cell's center. Then, she and Bell, who is also currently associated with VBI as one of its faculty fellows, study the response as ...

Study shows how retinoic acid enters a cell's nucleus

... a certain sequence, called a nuclear localization signal (NLS). However, CRABP-II does not have a recognizable NLS. Researchers have long wondered how proteins without an NLS enter a cell's nucleus. By comparing the 3-D structures of the CRABP-II protein before and after it comes in contact with RA, Noy a...

New type of rejection blocker protects kidneys after transplant

...nt is to recognize the new organ as foreign and to signal production of T-cells poised to destroy it. A second, co-stimulatory signal is required before the T-cells attack the kidney. By blocking this second signal, belatacept prevent...

Thinking the pain away? Study shows the brain's painkillers may cause 'placebo effect'

...mu-opioid receptors are. The stronger the positron signal from a particular brain region, the less active the mu opioid system, and vice versa. All of the participants showed an increase in the activation of their mu opioid endorphin system after they were told that the "medicine" was coming and the placeb...

Say what? Bacterial conversation stoppers

...r's lab discovered about 10 years ago. A chemical signal called autoinducer-2 (AI-2), originating from the ...e interference," Bassler said. "Consumption of the signal could be a mechanism that allows one kind of bacteria to block another kind of bacteria from countin...

Missing Receptor Molecule Causes Tumor Growth

...in tumors in the ovaries. Not because the starting signal is missing, but because this signal cannot be received by the cell. This finding, published today in the American science journal Molec...

Nanoparticles carry cancer-killing drugs into tumor cells

...in tumors in the ovaries. Not because the starting signal is missing, but because this signal cannot be received by the cell. This finding, published today in the American science journal Molec...

Nicotine triggers the same brain reward circuitry as opiates

...ironmental stimuli can activate the same molecular signal transduction molecules as the drug itself," wrote Blendy and her colleagues. They wrote that the activation of CREB "is evident not only after acute and repeated nicotine administration, but also following exposure to an environment in which the anim...

New lead reported in tumor angiogenesis

...teraction, like a finger pushing a button, sends a signal within these cells to grow and sprout new capillaries. The finding, while technical in nature, has potentially major implications for anti-angiogenic therapy, one of the hottest areas in cancer research. Dr. Cun-Yu Wang, a scientist at the Universit...

Carnegie Mellon University research reveals how cells process large genes

... contains a sequence of nucleotides similar to the signal normally found at the beginning of an intron. This signal is juxtaposed with another sequence like that normally found at the end of an intron. Such a unique ...

1 2 3 4 5 6 7 8 9 10