Equipo de investigadores expone la forma en la que uno de los genes que más comúnmente muta en los cánceres humanos puede hacer que las células buenas se conviertan en malignas.
New research shows that normal aging appears to disrupt communication between different regions of the brain.
Nueva investigación muestra que el envejecimiento normal parece interrumpir la comunicación entre distintas regiones del cerebro.
The antidepressant mianserin can extend the lifespan of the the roundworm by about 30 percent.
Structural information about the protein the measles virus uses to attach itself to target cells suggests a strategy to fight infection.
HHMI investigator Dorothee Kern and her colleagues have developed a new picture of how the enzyme adenylate cyclase works.
Información estructural sobre la proteína que usa el virus del sarampión para unirse a sus células dianas podría proporcionar una nueva estrategia para luchar contra la infección.
Researchers have deciphered the molecular language that cholera bacteria use to coordinate their infectivity. By interrupting the bacterium's chemical conversation, researchers may be able to stop cholera virulence.
HHMI researchers are unveiling the most detailed views yet of the structure of a voltage-dependent potassium ion channel.
Unos investigadores han descifrado el lenguaje molecular que las bacterias del cólera utilizan para coordinar su infectividad. Al interrumpir la conversación química de las bacterias, se podría detener la virulencia del cólera.
Researchers have developed a small molecule that can turn the survival signal for a variety of cancer cells into a death signal.
New details emerge about how cells decide their fates when faced with stress.
Researchers have devised a new strategy to fight breast and ovarian cancer.
Scientists have shown how odor-sensing neurons in the worm can activate or inhibit other neurons that control crawling and turning.
New studies reveal that the cancer-promoting gene ras relies on 28 other genes to switch off the cell's programmed cell death pathway.
HHMI researchers discover a clever strategy that helps Legionella pneumophila infect host cells.
HHMI researchers have now discovered a protein that can affect how DNA is packaged inside sperm.
A worldwide network of more than 150,000 home computer users helped HHMI researchers predict the structure of a small, naturally occurring protein.
The brain may continue to consider the options even after a decision is made, leaving room for a change of mind.
New study suggests that each breast and colon tumor is unique and may arise through mutations in many different combinations of genes.
Meet the 15 physician-scientists selected in 2007 as new HHMI investigators.
HHMI announces the selection of 15 of the nation's top patient-oriented researchers, who will soon become HHMI investigators.
HHMI investigator Mario R. Capecchi is among trio of scientists honored for development of powerful gene-targeting techniques.
Mario Capecchi received a Kyoto Prize from the Inamori Foundation in 1996. The lecture he delivered when he accepted the prize in Japan in November 1996 tells the story of his remarkable life. The text of the lecture has been edited for length.
New studies establish how the stress hormone norepinephrine boosts learning by strengthening connections between neurons.
Scientists have traced the 170 million-year evolution of a piece of "junk" DNA to its modern incarnation as an important regulator of energy balance.
Científicos rastrean la evolución que tuvo, durante 170 millones de años, un pedazo de ADN “basura” hasta encontrar su encarnación moderna como regulador importante del balance energético.
HHMI researchers have figured out how a bacterial circadian clock ticks away using only three interacting proteins.
Researchers have demonstrated how tens of thousands of closely related proteins establish the specificity that allows them to serve as identification tags for individual neurons.
Researchers have determined the identity of a significant feature that makes a neuron a recycler par excellence.
Scientists have succeeded in reprogramming adult stem cells from the testes of male mice into functional blood vessels and contractile cardiac tissue.
A chemical produced when the body breaks down cholesterol inhibits the activity of estrogens circulating in the blood.
Individual variability in innate immunity may leave some people dangerously exposed to common pathogens such as herpes simplex virus.
A genetic mutation found in some people with autism and Asperger syndrome causes social impairment and cognitive enhancement in mice.
Researchers have provided insight into how mutations in a single gene can cause mental retardation and kidney dysfunction in boys with Lowe syndrome.
Studies reveal why the same prion protein can be either weakly or strongly infectious.
HHMI researchers have identified an "emergency" mechanism that yeast cells use to switch on protein synthesis in times of stress.
A red sea anemone purchased in a Moscow pet shop provides a blueprint for a more vivid red fluorescent protein.
Photosensing proteins drive the spread of a bacterial infection that costs cattle farms in Brazil and Argentina up to $100 million a year.
A systematic strategy may uncover the different developmental steps and cellular machinery used to build axons and dendrites.
Proteínas fotosensibles conducen la diseminación de la brucelosis vacuna, que es una infección bacteriana que le cuesta a las haciendas en Brasil y Argentina hasta $100 millones de dólares por año.
Researchers are learning how the neurons of people with Lafora disease accumulate toxic amounts of carbohydrates.
Investigadores aprenden la forma en la que las neuronas de las personas con la enfermedad de Lafora acumulan cantidades tóxicas de carbohidratos.
In mending the DNA broken during antibody production, immune cells can employ a type of DNA repair that is fundamentally different than the classical method.
HHMI scientists have created a completely new enzyme entirely in vitro.
A colorful new palette of fluorescent tags promises to give researchers a better view of life at the molecular level.
When pathogenic microbes or chemicals inflame the intestine, the balance of microbial power shifts.
A molecule that constantly reinvents itself is one of the many ingenious mechanisms that the malaria parasite has evolved to protect itself against the human immune system.
Mother's milk can turn toxic if the molecular pathways that govern its production are disrupted.
La leche materna puede volverse tóxica si se descomponen las vías moleculares que gobiernan su producción.