Univ. of California, Los Angeles researchers have developed a lens-free microscope that can be used to detect the presence of cancer or other cell-level abnormalities with the same accuracy as larger and more expensive optical microscopes. The invention could lead to less expensive and more portable technology for performing common examinations of tissue, blood and other biomedical specimens.
More than 90% of cancer-related deaths are caused by the spread of cancer cells from their...
Newly published research provides the first demonstration of how a genetic mutation associated...
A Yale Univ. laboratory has crafted the first synthetic molecules that have both the targeting...
Rice Univ. scientists have detected at least three instances of cross-species mating that likely influenced the evolutionary paths of “old world” mice, two in recent times and one in the distant past. The researchers think these instances of introgressive hybridization are only the first of many needles waiting to be found in a very large genetic haystack.
A new study from Massachusetts Institute of Technology implicates a family of RNA-binding proteins in the regulation of cancer, particularly in a subtype of breast cancer. These proteins, known as Musashi proteins, can force cells into a state associated with increased proliferation.
When someone you know is wearing an unfamiliar hat, you might not recognize them. Georgia Institute of Technology researchers are using just such a disguise to sneak biomaterials containing peptide signaling molecules into living animals. When the disguised peptides are needed to launch biological processes, the researchers shine ultraviolet light onto the molecules through the skin, causing the "hat" structures to come off.
Understanding how nitrite can improve conditions such as hypertension, heart attack and stroke has been the object of worldwide research studies. New research from Wake Forest Univ. has potentially moved the science one step closer to this goal. In a recently published paper, the team shows deoxygenated hemoglobin is indeed responsible for triggering the conversion of nitrite to nitric oxide, a process that affects blood flow and clotting.
Where did the songbird get its song? What branch of the bird family tree is closer to the flamingo: the heron or the sparrow? These questions seem simple, but are actually difficult for geneticists to answer. A new, sophisticated statistical technique developed by researchers can help researchers construct more accurate species trees detailing the lineage of genes and the relationships between species.
In a triumph for cell biology, researchers have assembled the first high-resolution, 3-D maps of entire folded genomes and found a structural basis for gene regulation—a kind of “genomic origami” that allows the same genome to produce different types of cells. The research appears online in Cell.
Using a gene-editing system originally developed to delete specific genes, MIT researchers have now shown that they can reliably turn on any gene of their choosing in living cells.
Scientists in a lab used a powerful laser to re-create what might have been the original spark of life on Earth. The researchers zapped clay and a chemical soup with the laser to simulate the energy of a speeding asteroid smashing into the planet.
Scientists from the Spanish National Cancer Research Centre (CNIO), have developed a method for producing biological crystals that has allowed scientists to observe— for the first time— DNA double chain breaks.
The same research team that developed the first laser based on a living cell has shown that use of fluorescent proteins in a solid form rather than in solution greatly increases the intensity of light produced, an accomplishment that takes advantage of natural protein structures surrounding the light-emitting portions of the protein molecules.
An international research team that includes researchers from Lawrence Livermore National Laboratory has captured the highest-resolution protein snapshots ever taken with an x-ray laser, revealing how a key protein in a photosynthetic bacterium changes shape when hit by light.
Penicillin, the wonder drug discovered in 1928, works in ways that are still mysterious almost a century later. One of the oldest and most widely used antibiotics, it attacks enzymes that build the bacterial cell wall, a mesh that surrounds the bacterial membrane and gives the cells their integrity and shape. Once that wall is breached, bacteria die, allowing us to recover from infection.
In a recent study, Univ. of California, Los Angeles scientists have shown that two genes not previously known to be involved with the immune system play a crucial role in how progenitor stem cells are activated to fight infection. This discovery lays the groundwork for a better understanding of the role progenitor cells can play in immune system response and could lead to the development of more effective therapies for diseases.
A team led by Florida State Univ. researchers has identified DNA elements in maize that could affect the expression of hundreds or thousands of genes. The team wanted to know if certain DNA structures such as the four-strand G-quadruplex (G4) DNA might exist throughout the genetic material of maize.
The rapid evolution of HIV, which has allowed the virus to develop resistance to patients' natural immunity, is at the same time slowing the virus's ability to cause AIDS. The Oxford Univ.-led study also indicates that people infected by HIV are likely to progress to AIDS more slowly—in other words the virus becomes less “virulent”—because of widespread access to antiretroviral therapy (ART).
New research from Rice Univ. and the Univ. of Texas MD Anderson Cancer Center shows how ovarian tumors co-opt a specific type of adult stem cell from abdominal tissues to fuel their growth. The research, published online in Cancer Research, suggests a new way to target aggressive ovarian cancers by disrupting the metabolic processes that allow them to thrive.
Biological engineers have created a new computer model that allows them to design the most complex 3-D DNA shapes ever produced, including rings, bowls and geometric structures such as icosahedrons that resemble viral particles. This design program could allow researchers to build DNA scaffolds to anchor arrays of proteins and light-sensitive molecules called chromophores that mimic the photosynthetic proteins found in plant cells.
The house mouse, stickleback fish and honey bee appear to have little in common, but at the genetic level these creatures respond in strikingly similar ways to danger, researchers report. When any of these animals confronts an intruder, the researchers found, many of the same genes and brain gene networks gear up or down in response.
Researchers can now explore viruses, bacteria and components of the human body in more detail than ever before with software developed at The Scripps Research Institute. In a study published online in Nature Methods, the researchers demonstrated how the software, called cellPACK, can be used to model viruses such as HIV.
The presence of an immune-suppressing protein in non-cancerous immune cells may predict how patients with different types of cancer respond to treatment, a multi-center phase I study using an investigational immune therapy drug has found. The trial included patients with melanoma or cancers of the lung, kidney, colon, GI tract, or head and neck, whose tumors were evaluated for PD-L1 expression by a novel assay.
Many older people silently harbor a blood "pre-cancer"—a gene mutation acquired during their lifetime that could start them on the path to leukemia, lymphoma or other blood disease, scientists have discovered. It opens a new frontier on early detection and possibly someday preventing these cancers, which become more common with age.
A team of scientists from Arizona State Univ.’s Biodesign Institute and IBM’s T.J. Watson Research Center have developed a prototype DNA reader that could make whole genome profiling an everyday practice in medicine. Such technology could help usher in the age of personalized medicine, where information from an individual’s complete DNA and protein profiles could be used to design treatments specific to their individual makeup.
While the turkey you eat on Thursday will bring your stomach happiness and could probably kick-start an afternoon nap, it may also save your life one day. That’s because the biological machinery needed to produce a potentially life-saving antibiotic is found in turkeys. Looks like there is one more reason to be grateful this Thanksgiving.
Dr. Denham Harman, a renowned scientist who developed the most widely accepted theory on aging that's now used to study cancer, Alzheimer's disease and other illnesses, has died in Nebraska at age 98. Harman, who worked into his mid-90s at the Univ. of Nebraska Medical Center died after a brief illness at a hospital in Omaha.
The body responds to tuberculosis infection by locking the bacterial offenders into tiny clusters of immune cells called granulomas, which are a hallmark of the disease. This containment strategy succeeds at first, but eventually the bacteria manage to break out of these intercellular jails and spread throughout the body.
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