New angiogenesis finding may help fight cancer growth
...se angiogenesis. "Activating the NK-B receptor blocked angiogenesis, and blocking the receptor stimulated angiogenesis," Bresnick says. In theory, selectively stimulating angiogenesis could help treat heart attacks by restoring blood flow to the heart, increasing the blood supply to threatened heart musc...Solved: The mystery of flesh-eating bacteria's relentless attack
...2004, the team began to search for the factor that blocked the recruitment of white blood cells during M14 infection. They focused on the gene for a Streptococcus peptide called SilCR, after finding that the gene product was turned off in the M14 strain. "This gene is supposed to produce a peptide that ac...New insight into skin-tanning process suggests novel way of preventing skin cancer
...he normal pathway and the precise step where it is blocked in people who do not tan well," he remarks. Melanoma is the fastest-increasing form of cancer in the world, accounting for 62,000 new cases in the United States every year and nearly 8,000 deaths, according to the American Cancer Society. It occurs ...News tips from the Journal of Neuroscience
...or for SDF1 that is secreted by the leptomeninges, blocked the rescue. In utero CXCR4 inhibition also interfered with normal C-R positioning during development. Thus, SDF1 signaling is essential for initial positioning as well as maintenance of C-R cells in the marginal zone. 3. Motor Goals and the Monke...Researchers discover that sheep need retroviruses for reproduction
...e in development of the human placenta. The team blocked expression of the envelope of the enJSRVs using mo... RNA. When production of the envelope protein was blocked in the early placenta, the growth of the placenta was reduced and a certain cell type, termed giant ...... together to build new envelopes. When scientists blocked the activity of MEL-28, they discovered that patches of membranes attached themselves to DNA but couldn't seal themselves off into a complete envelope. A step-by-step analysis showed that without the protein, other molecules are not drawn together pr...Clue found to Epstein-Barr virus' ability to form and sustain tumors
...lated tumors. The researchers found that when they blocked this activity, the virus life cycle was broken. Often linked to infectious mononucleosis, EBV also causes cancers that kill 100,000 people around the world each year. The virus, which infects the immune system's B cells and causes them to grow, is d......loid and red blood cells. B- and T-cells were also blocked at early stages, but in a different way. This hints that they may be controlled by other protein links in the Wingless pathway as well. Perhaps most strikingly, beta-catenin appears to make cells take decisions about their fate before they leave the ...DOE JGI, VBI describe disease mechanisms of sudden oak death, related soybean pathogens
...e advances promise to reveal processes that can be blocked by human intervention and thus prevent the devastating economic losses to soybean crops and the environmental destruction of woodlands." The researchers observed that the pathogens, during the initial hours of infection, derive their nutrition from ...How HIV 'exhausts' killer T cells
...els of these HIV-specific cells; but as soon as we blocked the PD-1 pathway, they had a ton of them," said Walker. The researchers' discoveries could lead to immediate clinical application, although Walker cautioned against over-optimism. "Obviously, the big question is whether you could manipulate this...Study provides insight into how the brain loses plasticity of youth
...ye to invade the area that normally represents the blocked eye. This shift is strictly limited to a critical period of development early in life. Syken and his colleagues sutured one eye in their adult mutant mice, and also in controls, for several days. They exposed the open eye to light and, using the acti...Cancer stem cells spur glioma angiogenesis, could hold key to brain tumor therapy
... the trade name Avastin) that blocks VEGF activity blocked new blood vessel formation and prevented tumor growth. The researchers suggest that the stem cell-like glioma cells, because of their support of angiogenesis, could hold an important target to suppressing the growth of brain cancer. "VEGF antibod...Novel pathway identifies rapamycin as tumor angiogenesis inhibitor
...hanges in vasculature were reversible and could be blocked by rapamycin, a compound that is currently in clin...ssive properties known to decrease Akt activation, blocked Akt-driven changes in blood vessels. Rapamycin also reduced tumor growth and abnormal vasculature in...Rapamycin shown to inhibit angiogenesis
...he animals with rapamycin. As predicted, the agent blocked the Akt-induced blood vessel changes. In subsequent experiments, rapamycin reduced tumor growth and vascular leak in a mouse tumor model. "This paper represents an impressive advance in our understanding of the mechanisms by which tumors generate ...Remote control for human growth hormone gene expression
...us control region. This DNA insertion specifically blocked the copying of the CD79b gene into RNA in the pituitary. This blockade led to the five-fold repression of hGH gene expression. These findings confirm that the CD79b non-coding DNA actively contributes to hGH expression. The relationship between CD79b...New hope for Hepatitis C research
..., they showed a gene called protein kinase R (PKR) blocked the replication of HCV in mice. "When a person becomes infected with HCV, the immune system produces a protein called interferon to fight the infection," said co-author and Director of the Monash Institute of Medical Research, ProfessorBryan Willia...Insulin pathway component explains insulin resistance, age-associated metabolic syndrome
...ed glucose and lipid levels in the body. They also blocked the function of another important insulin regulator, a factor called FOXO, which is known to be a critical mediator of insulin signals and therefore glucose and lipid metabolism. In addition, flies with the mutated form of TOR had longer life spans t...Preclinical study shows chronic stress agitates ovarian cancer; reducing stress slows tumor growth
...ow and spread more quickly, but that effect can be blocked using a medication commonly prescribed for heart d...ian cancer research. In fact, when the researchers blocked the stress hormone receptors in their experimental system using a heart disease drug called proprano...Scientists discover a genetic code for organizing DNA within the nucleus
...on, since access to DNA wrapped in a nucleosome is blocked for many proteins, including those responsible for some of life's most basic processes. Among these barred proteins are factors that initiate DNA replication, transcription (the transfer of genetic information from DNA to RNA) and DNA repair. Thus, t......vity of HO. Short-term SnPP treatment successfully blocked HO activity in both normal and SCD mice, reduced kidney blood flow in normal and SCD mice, but did not affect the filtration capacity of the kidney in either group. However, when chronically administered, SnPP caused inflammation and fibrosis (scarr...