A discovery about how the body deals with the cholesterol contained within its dying cells has suggested an exciting new approach to control people’s cholesterol levels – and thus their risk of developing heart disease.
Everyone who has played in a band or orchestra knows that playing in time creates music, while playing out of time creates cacophony. In an orchestra, each player may be out of tune when warming up, but eventually, all players must reach the same pitch, rhythm, and timing to produce a viable piece of music.
When it comes to fending off disease and helping prevent people from falling ill, the body’s immune system – armed with T-cells that help eliminate cancer cells, virus-infected cells and more – is second to none. But exactly how the immune system works remains, in many ways, a mystery, as there are numerous cell types whose functions and interactions with our immune systems have not been…
Complex life is only possible because proteins bind to each other, forming higher-order structures and signal pathways. Scientists at the Max Planck Institute (MPI) of Biochemistry in Martinsried near Munich and at the MPI of Molecular Cell Biology and Genetics in Dresden have now drawn a detailed map of human protein interactions. Using a novel mass spectrometric quantification method, the…
A unique molecule developed at Duke Medicine, the University of North Carolina at Chapel Hill and MacroGenics, Inc., is able to bind HIV-infected cells to the immune system’s killer T cells. It could become a key part of a shock-and-kill strategy being developed in the hope of one day clearing HIV infection.
An international team of researchers, led by scientists at the National University of Singapore (NUS), has identified a protein that regulates the growth of neurons by transporting key metabolic enzymes to the tips of neural cells. Their findings open up new avenues for design of drugs for ataxia, a motor coordination disorder.
Researchers funded by the National Institute of Biomedical Imaging and Bioengineering at Tufts University and their collaborators have successfully developed a 3-dimensional (3D) tissue-engineered model of bone marrow that can produce functional human platelets outside the body (ex vivo).
When a pathogen invades the body, specific cells in the human immune system are ready to take immediate action in order to destroy it. The molecular characteristics of these killer cells were unknown until recently. Now, for the first time, a team from the Technical University of Munich (TUM) has managed to create a molecular profile of the protective cells. By studying these immune cells from…
By implanting electrodes in the brain tissue one can stimulate or capture signals from different areas of the brain. These types of brain implants, or neuro-prostheses as they are sometimes called, are used to treat Parkinson's disease and other neurological diseases.
People often talk about how important it is to stay in shape, something humans usually can accomplish with exercise and a healthy diet, and other habits. But chances are, few of us ever think about the shape of our individual cells.
In a small pilot study, researchers from North Carolina State University have demonstrated a rapid, simple way to generate large numbers of lung stem cells for use in disease treatment. This method of harvesting and growing a patient’s own lung stem cells shows promise in mice for treating idiopathic pulmonary fibrosis (IPF), and could one day provide human IPF sufferers with an effective, less…
Every organism—from a seedling to a president—must protect its DNA at all costs, but precisely how a cell distinguishes between damage to its own DNA and the foreign DNA of an invading virus has remained a mystery. Now, scientists at the Salk Institute have discovered critical details of how a cell’s response system tells the difference between these two perpetual threats. The discovery…
Vascular surgeon Pat Kelly of Sanford Health in Sioux Falls, South Dakota, knew his patients were doing better with the stent graft he designed, but he wanted a better understanding of the mechanics before testing the device more widely in a clinical trial. For that, he reached out to South Dakota State University. Associate professor Stephen Gent in mechanical engineering had done computational…
When our cells copy their DNA to grow and replicate, it’s vital the process runs smoothly. To get this right, cells use a complex “machine”, made from many hundreds of components. This machine is built afresh, moment by moment as it’s needed during the copying process. This assembly–de-assembly is vital to accurate and efficient copying.
Diabetes, which now affects almost 30 million Americans, can cause serious health complications, including heart disease, blindness, kidney failure and lower-extremity amputations. A lesser-known but equally grave complication is the effect of diabetes on bone health.“Clinical trials have revealed a startling elevation in fracture risk in diabetic patients,” says Liyun Wang, associate…
For patients with an often-deadly form of leukemia, new research suggests that lingering cancer-related mutations – detected after initial treatment with chemotherapy – are associated with an increased risk of relapse and poor survival.
For some, TOR may bring to mind a Celtic mountain or perhaps an Internet privacy group. In the world of molecular biology it’s a cellular pathway that’s found in everything from yeast to mammals. mTOR (as it’s called in mammals) plays a central role in instructing the cell to grow and divide in response to nutrients. When it’s turned down, the cell shifts into a second, tidying mode,…
A multifaceted farming intervention can reduce food insecurity while improving HIV outcomes in patients in Kenya, according to a randomized, controlled trial led by researchers at UC San Francisco.
