Researchers have devised a new method that increases the number of blood vessel-forming cells they can make from human embryonic stem cells.
Investigadores han demostrado que distintas mutaciones que causan cáncer en células vecinas pueden cooperar para producir tumores.
Researchers have shown that distinct cancer-causing mutations in neighboring cells can cooperate to produce tumors.
Researchers have new information about how proteins called Argonautes bind to small RNAs and selectively shut down protein production.
Scientists have identified the genetic cause of a rare eye movement disorder and found that specific mutations in the disease gene can cause additional errors in neurodevelopment and neuronal survival.
A newly identified enzyme could help scientists create stem cells and arrest the growth of cancers by giving them the ability to wipe clean cells' developmental slates.
Terrible and swift as anthrax appears to its victims, the deadly toxin takes its time breaking into their cells. The entry of anthrax toxin into its cellular target is part of a carefully-planned, two-pronged attack, scientists have found.
Gerald M. Rubin, director of the Howard Hughes Medical Institute’s Janelia Farm Research Campus, will deliver a public lecture titled “The Fly Brain and Yours—Closer Than You Think,” at Janelia Farm in Ashburn, VA.
Janelia scientists have borrowed a technique from the field of astronomy to overcome biology’s equivalent of the twinkling of stars and the shimmering mirages in desert landscapes.
A small but aggressive fraction of metastatic cancer cells can re-infiltrate the original tumor, boosting its malignant potential.
Una fracción pequeña pero agresiva de células cancerígenas puede reinfiltrar el tumor original, aumentando su potencial maligno.
From the brain's point of view, not every itch is the same. HHMI researchers have identified a new type of itch receptor.
Bruns, who has led the HHMI Grants Program since 2001, will retire in August 2010.
HHMI Professor Catherine Drennan infused her introductory chemistry class with examples from biology and medicine in an attempt to help her students make connections between disciplines.
In a tour-de-force of evolutionary sleuthing, researchers have traced a yellow-to-black color change in African fruit flies to five single-letter genetic mutations.
Researchers have identified a naturally occurring human protein that helps prevent infection by H1N1 influenza and other viruses, including West Nile and dengue virus.
HHMI has invited 12 more schools to join the Science Education Alliance to engage their students in scientific discovery on a national scale.
A newly identified gene mutation is one of only a handful of mutations outside the X chromosome to be linked to intellectual disability.
A new method for strengthening proteins could lead to improved laundry soap, better nanotechnology, and less expensive cancer drugs.
Comparing the DNA of fish with and without spiny pelvic hindfins provides evidence that evolution can leap rather than shuffle.
Using advanced electron-microscopy and modeling techniques, a team of researchers has determined the structure of a eukaryotic ribosome with unprecedented accuracy.
Scientists have discovered a new type of stem cell in the skin that acts surprisingly like certain stem cells found in embryos: both can generate fat, bone, cartilage, and even nerve cells. These newly-described dermal stem cells may one day prove useful for treating neurological disorders and persistent wounds, such as diabetic ulcers.
HHMI researchers have identified a new factor necessary for the development of medulloblastomas, the most common type of malignant childhood brain cancer.
A protein found in the saliva of ticks may prove to be an attractive target for a new type of Lyme disease vaccine.
Scientists have found that preeclampsia can dramatically increase the likelihood that a woman will experience low thyroid function later in life.
The Howard Hughes Medical Institute is offering grants to 23 schools that are developing new graduate programs or enhancing existing programs that prepare scientists to translate laboratory discoveries into new medical treatments and diagnostics.
The Howard Hughes Medical Institute is awarding a total of $16 million to 23 schools that are developing graduate programs to prepare scientists to translate laboratory discoveries into new medical treatments and diagnostics.
Researchers have developed a new imaging method to track how a person’s brain divides up duties between the two halves.
A new imaging tool lets researchers watch individual neurons in the brains of living animals light up as they work together to control the animal’s behavior.
Scientists have an ambitious new strategy for untangling the evolutionary history of humans and their biological relatives: obtain, preserve, and sequence the DNA of approximately one species for each genus of living mammals, birds, reptiles, amphibians, and fish.
Variations from DNA's iconic double-helix shape transmit information about where proteins need to bind to make sure the right genes are activated or silenced during development.
New research shows that histones that escape from cells aren’t just a byproduct of sepsis, they’re a ringleader in its development.
Cutting down the amount of fat particles in cells may be an effective way to prevent the dengue fever virus from replicating and spreading.
Nueva investigación muestra que el reducir la cantidad de partículas grasas de las células podría ser una forma eficaz de evitar que el virus de la fiebre del dengue se replique y disemine.
A signaling pathway that guides the early development of animals from flies to humans also helps a regenerating flatworm orient itself from head to tail.
New research by an HHMI-funded graduate students and his colleagues has overturned an 150-year-old idea of how the parasite Trypanasoma brucei moves. T. brucei causes African sleeping sickness.
José A. Rodriguez, estudiante doctoral financiado por el HHMI en la Universidad de California en Los Ángeles y un equipo multidisciplinario de colegas han encontrado que el parásito Trypanasoma brucei, que causa la enfermedad africana del sueño, no se mueve en sólo una dirección como un sacacorchos.
Por primera vez, científicos han diagnosticado una enfermedad genética secuenciando completamente todos los genes de un paciente.
For the first time, scientists have diagnosed a genetic disease by completely sequencing all of a patient’s genes.
New research shows how the taste of carbonation is perceived.
Eight HHMI investigators honored for professional achievement in the health sciences.
New research shows that a protein that stabilizes DNA does a lot of slipping and sliding as it wrestles the molecule into place.
Thomas A. Steitz, Venkatraman Ramakrishnan y Ada E. Yonath son los galardonados con el Premio Nobel de Química de 2009 por sus estudios sobre la estructura y función del ribosoma.
Thomas A. Steitz, Venkatraman Ramakrishnan, and Ada E. Yonath awarded the 2009 Nobel Prize in Chemistry for studies of the structure and function of the ribosome.
HHMI researcher Jack Szostak wins 2009 Nobel Prize in Physiology or Medicine.
La Real Academia de Ciencias Sueca anunció que Jack W. Szostak, Elizabeth Blackburn y Carol Greider fueron galardonados con el Premio Nobel 2009 de Fisiología o Medicina el descubrimiento de cómo los cromosomas son protegidos por los telómeros y la enzima telomerasa.
A new student-produced documentary film examines the choices and experiences of graduates of Spelman College, a historically black women’s college in Atlanta, as they pursue careers in science.
Keio University honors Friedman for research on obesity.
A study examining the letters of 16 well known writers, performers, politicians, and scientists shows that the factors that determined their correspondence patterns are the same factors that shape emailing patterns today.
In evolution, proteins can’t go home again—at least not by their original route.
A new method for rapidly identifying genes that are crucial for survival of bacteria cuts the time it takes to pinpoint promising new drug targets from years to weeks.
En el mundo de aminoácidos que en su mayoría es “izquierdo”, las versiones “derechas” de algunas de estas moléculas actúan como señales que pueden estimular la adaptación de las bacterias a cambios en las condiciones ambientales.
In the overwhelmingly left-handed world of amino acids, the right-handed versions of a few such molecules act as signals that spur bacteria to adapt to changing conditions.
Fuchs to be honored for studies on the biology of mammalian skin and skin diseases.
HHMI investigators Brian Druker and Charles Sawyers will join Nicholas Lydon, formerly of Novartis, in receiving the 2009 Lasker~Debakey Clinical Medical Research Award.
A new genetically encoded switch lets researchers use light to control a cell’s shape and movement.
An innovative new health sciences curriculum at the University of Minnesota Rochester, spearheaded by HHMI Professor Claudia Neuhauser, is specially designed to integrate seemingly unrelated topics, such as biology and statistics or chemistry and ethics.
The sentinels of the immune system possess a hidden strength that may be used to improve vaccine design for tough-to-beat bugs.
The method Google uses to rank the importance of web pages can help identify the species whose extinction would most likely trigger an ecosystem’s collapse.
More than 100 elementary school teachers from the San Francisco Unified School District came together this summer to get hands-on experience on using science kits in their classrooms.
Science experiments will be taking place across Montgomery County, Maryland, as part of an initiative funded by HHMI that aims to place a highly-trained science teacher in each of the district's 130 elementary schools.
A new imaging technique will allow scientists to focus on the tiny structures that mediate communication between neurons within relatively intact samples of brain tissue.
Variations in the ways abnormal proteins fit together to form the long amyloid fibrils associated with many diseases may represent a protein-based system of inheritance that parallels the genetic code.
At the Howard Hughes Medical Institute’s Janelia Farm Research Campus in Virginia, scientists are developing innovative new technologies and pursuing ambitious scientific questions. This summer, sixteen undergraduate students are part of that mission.
Researchers have identified two molecular keys that help release salts from cells, keeping them alive in the ever-changing salinity of their environment.
Researchers have learned how a molecular switch helps the immune system to keep cancer in check by promoting the destruction of abnormal blood cells.
Interfering with communication among bacteria can prevent them from mounting a unified assault on their host.
A new study shows that most early ovarian tumors exist for years at a size that is a thousand times smaller than existing tests can detect reliably.
Un nuevo estudio muestra que la mayoría de los tumores ováricos en estadios tempranos tienen, durante años, un tamaño que es mil veces más pequeño del que los análisis existentes pueden detectar con confiabilidad.
Tiny, hair-like projections called cilia sense bitter material in the airways and help expel it.
An HHMI-funded graduate student and her colleagues have found that some chimps infected with the primate form of HIV develop AIDS-like symptoms and die early.
New clues narrow the search for the underlying cause of a serious congenital heart defect.
Brief bios of the 2009 Early Career Physician Scientists.
Eleven promising physician-scientists whose research interests range from obesity to childhood cancer will share a total of $4 million from the Howard Hughes Medical Institute.
Lung cancer cells hijack a master cellular signal and use it to seed deadly new tumors in the brain, bone marrow, and other organs.
New evidence suggests that damage to nerve cells in people with MS accumulates because the body's mechanism for repairing the nerve coating called myelin stalls out.
Researchers have identified two proteins that begin to explain how radically slashing calories leads to a longer life.
Joan Massagué honored for elucidating one of the fundamental processes that control cell division.
A new method will speed the identification of the targets of microRNAs—the tiny but powerful bits of nucleic acid that tweak gene expression to influence many aspects of health and human disease.
Friedman honored for research leading to discovery of hormone that regulates appetite and body weight.
HHMI is expanding collaborations with the Jane Coffin Childs Memorial Fund, the Helen Hay Whitney Foundation, the Damon Runyon Cancer Research Foundation, and the Life Sciences Research Foundation to increase support for outstanding postdoctoral researchers.
New research shows that a father’s sperm passes along a previously unrecognized set of instructions that helps guide the early development of his children.
A new molecular portrait of rotavirus may help researchers design more effective vaccines against the lethal gastrointestinal infection that kills 500,000 children annually.
A new microscopy technique is enabling researchers to capture videos of fast-moving cellular processes with super high resolution.
Additional housing will be constructed on the Janelia Farm Research Campus to support the recruitment of graduate students, postdoctoral researchers, and other scientists at the beginning of their careers.
New research indicates that in most cases, natural selection may shape the human genome much more slowly than previously thought.
The report "Scientific Foundations for Future Physicians" lays out a series of scientific competencies that students must master prior to attending medical school and medical students must understand upon completion of their MD.
A new report for the first time defines scientific competencies for future medical school graduates and for undergraduate students who want to pursue a career in medicine.
HHMI researchers identify many potential new drug targets for cancers long deemed "untouchable."
HHMI will hold its third nationwide competition to find 12 colleges and universities to join the Science Education Alliance, a bold effort to engage students through authentic research experiences at the start of their academic careers.
Mississippi high school teachers have teamed up with scientists at the University of Mississippi Medical Center and the Marine Biological Laboratory to design a high school biology curriculum focused on fire ants.
Research suggests new avenues to treat or prevent infections by parasitic worms.
A protein often accused of sparking autoimmune disease can suppress the onset of inflammatory bowel disease.
HHMI scientists have taken a major step towards understanding the molecular mechanisms that transform Listeria monocytogenes from a harmless soil-dweller to a dangerous human pathogen by mapping the genes that Listeria expresses under different environmental conditions.
Former Trustee served HHMI for 18 years, helping shape the Institute's research programs.
Horvitz's election to the Fellowship of the Royal Society recognizes his exceptional contributions to science.
Ultraviolet radiation from the sun can zap DNA, damage cells, and set the stage for the subsequent development of cancer. Scientists have now identified the built-in safety mechanism that forces some cells damaged by UV radiation to commit suicide so they do not perpetuate harmful mutations.
La radiación ultravioleta del sol puede destruir el ADN, dañar las células y predisponer al organismo para el desarrollo subsecuente de cáncer. Unos científicos han identificado el mecanismo de seguridad intrínseco que fuerza a algunas células dañadas por la radiación UV a cometer suicidio para no perpetuar mutaciones dañinas.
The movement of blood through the aorta of a developing embryo triggers the production of new blood stem cells.
On June 9, HHMI investigator Ron Evans will deliver a public talk, "Unlocking Ability: What Can Research Teach Us About Exercise?"