"It has been noted that cancer resembles a state of chronic wound healing, in which the wound-healing program is erroneously activated and perpetuated," says Professor Adrian Krainer of Cold Spring Harbor Laboratory (CSHL). …
"Emergence of a novel drug-resistant H7N9 influenza virus: Evidence-based clinical potential of a natural IFN-alpha for infection control and treatment" is set to publish in an early online edition of January’s Expert Review of Anti-infective Therapy journal. Richt is a regents distinguished professor and Kansas Bioscience Authority eminent scholar at Kansas State University’s College of Veterinary Medicine. He also is the director of the U.S. Department of Homeland Security’s Center of Excellence for Emerging and Zoonotic Animal Diseases, or CEEZAD, at the university…
The research, which is published today in the New England Journal of Medicine, indicates Vemurafenib, a BRAF inhibitor that has been approved as a treatment for advanced melanomas, is also successful in treating Leukemia. …
Although no fixed threshold is defined for the UK, in practice, the National Institute for Clinical Excellence (NICE) guidelines suggest that patients need to have symptoms which indicate a five per cent risk or higher before further tests for most cancers are carried out. In the UK, one in three people in the UK will develop cancer during their lifetime…
In a study described in the January 13 issue of Cancer Cell, Marikki Laiho, M.D., Ph.D., and her colleagues say their work focused on the ability of a chemical dubbed BMH-21 to sabotage the transcription pathway RNA Polymerase pathway (POL I), shutting down the ability of mutant cancer genes to communicate with cells and replicate. Laiho’s research linked the pathway to p53 gene activity. P53 is a tumor suppressor gene, a protein that regulates cell growth, and it is the most frequently mutated suppressor gene in cancer…
The paper, titled "HIV-1 Persistence in CD4+ T-Cells with Stem Cell-Like Properties," provides evidence that a particular T-cell type may help researchers better understand why HIV can persist despite treatment. Zurakowski’s co-authors include Mathias Lichterfeld, the paper’s lead author, and researchers from Massachusetts General Hospital (MGH); Ragon Institute of MGH, the Massachusetts Institute of Technology and Harvard University; the First Affiliated Hospital of China Medical University; Brigham and Women’s Hospital; and Howard Hughes Medical Institute. Zurakowski explained that HIV treatments do not kill infected cells…
One strategy, which occurs in about 90 percent of cancers, requires increase production of a telomere-elongating enzyme called telomerase. A less understood strategy, employed by the remaining 10-15 percent of cancers, is called ALT (for Alternative Lengthening of Telomeres). Previously, biologists knew ALT existed simply because tumor cells could rebuild long, albeit unkempt-looking telomeres without telomerase. …
"Most human cells are short lived, so it has been unclear how HIV manages to stick around for decades in spite of very effective antiviral treatment," says Mathias Lichterfeld, MD, of the MGH Infectious Disease Division, corresponding author of the report receiving advance online publication in Nature Medicine. "This question led to the hypothesis that HIV might infect stem cells — the most long-lasting cells in the body — but traditional organ-specific stem cells, even those that give rise to all immune and blood cells, are resistant to HIV infection. We have discovered that a new group of T cells, called T memory stem cells, are susceptible to HIV and likely represent the longest lasting cellular niche for the virus." HIV has such a devastating impact on the human immune system because it infects the CD4-positive T cells that normally direct and support the infection-fighting activities of other immune cells. Several subtypes of CD4 T cells have different functions; and all are capable of being infected by HIV, although antiviral treatment keeps the virus in those cells from replicating…
"Because the assembly of cells is like an elaborate tinker toy set in which the parts can be used in different combinations to serve various roles, E6AP normally functions in nerve cells to direct brain development and in a functionally related process termed neuronal plasticity which allows nerve cells to alter their patterns of communication with neighboring cells during learning," notes Arthur Haas, PhD, the Roland Coulson Professor and Chairman of Biochemistry and Molecular Biology at LSU Health Sciences Center New Orleans and Director of the laboratory in which the work was performed. The research team included lead investigator Dr. Virginia Ronchi, a postdoctoral fellow, and her colleagues, Jennifer Klein and Dr. Daniel Edwards, all of whom work in Dr…
Associate Professor Jeffrey Karp, PhD, and James Ankrum, PhD, demonstrate in this month’s issue of Nature Protocols how to load cells with microparticles that provide the cells cues for how they should behave over the course of days or weeks as the particles degrade. "Regardless of where the cell is in the body, it’s going to be receiving its cues from the inside," said Karp, a Harvard Stem Cell Institute Principal Faculty member at Brigham and Women’s Hospital. "This is a completely different strategy than the current method of placing cells onto drug-doped microcarriers or scaffolds, which is limiting because the cells need to remain in close proximity to those materials in order to function. Also these types of materials are too large to be infused into the bloodstream." Cells are relatively simple to control in a Petri dish. …