Building the lymphatic drainage systemApril 27, 2009Our bodies' tissues need continuous irrigation and drainage. Blood vessels feeding the tissues bring in the fluids, and drainage occurs via the lymphatic system. While much is known about how blood vessels are built, the same was not true for lymph vessels. Now though, Norrmén et al. have identified two of the lead engineers that direct drainage construction in the mouse embryo. The engineers are the transcription factors, Foxc2 and NFATc1. Foxc2 had been implicated in lymph vessel development already, but Norrmén and colleagues have now found that the factor specifically regulates a late stage of lymph development when large, valve-containing vessels arise from more primitive capillaries. The study will be published online April 27 (www.jcb.org) and will appear in the May 4 print issue of the Journal of Cell Biology. Foxc2 built the lymph vessel valves with the help of NFATc1, which was a known heart valve engineer. Norrmén and colleagues also showed that Foxc2 and NFATc1 physically interact and that many DNA binding sites for the two transcription factors are closely linked. This latter finding generated a long list of target genes that might be controlled by the two factors. The team now plans to investigate these targets as well as to work out the upstream molecular pathways controlling Foxc2 and NFATc1. Whatever the mechanisms, if the team can show that Foxc2 and NFATc1 also prompt lymph vessel regeneration in adults, boosting these factors could help patients with lymph drainage problems - including those that have suffered extensive tissue injuries, or have had lymph nodes removed as part of cancer treatment. Rockefeller University Press |
|||||||||||||||||||||
| Related Lymphatic System Current Events and Lymphatic System News Articles Discovery offers potential new pancreatic cancer treatment Tiny particles that can carry drugs and target cancer cells may offer treatment hope for those suffering with pancreatic cancer. New research to be presented in November at the American Association of Pharmaceutical Scientists (AAPS) Annual Meeting in Los Angeles reveals that tumor-penetrating microparticles (TPM) have been specifically designed to break through hard-to-infiltrate barriers and deliver drugs more effectively and efficiently than the standard form of chemotherapy such as those injected through a vein. MDC scientists show how hematopoietic stem cell development is regulated During cell division, whether hematopoietic stem cells (HSCs) will develop into new stem cells (self-renewal) or differentiate into other blood cells depends on a chemical process called DNA methylation. Experimental drug lets B cells live and lymphoma cells die An investigative drug deprived non-Hodgkin lymphoma cells of their ability to survive too long and multiply too fast, according to an early study published recently in the journal Experimental Hematology. New 'adjuvant' could hold future of vaccine development Scientists at Oregon State University have developed a new "adjuvant" that could allow the creation of important new vaccines, possibly become a universal vaccine carrier and help medical experts tackle many diseases more effectively. Colorectal cancer Previously, only a few genes had been associated with the formation of metastases in colorectal cancer. Now, researchers of the Max Delbrück Center for Molecular Medicine (MDC) Berlin-Buch and Charité - University Medicine Berlin, Germany, have identified 115 genes that are disregulated both in the primary tumor and in its metastases. New technique may help detect potential breast cancer spread A new phase III clinical trial of early stage breast cancer patients has shown that a molecule designed to home in on nearby lymph nodes is just as accurate as current techniques, but faster, more specific and easier to use. Ambati study published in PNAS The side effects of an experimental "gene-silencing" treatment that is currently being investigated for a variety of diseases are even more wide-ranging than previously discovered, according to a study by a University of Kentucky researcher. A new theoretical model of tumor growth and metastasis based on differences in tissue pressure The HFSP Journal, the interdisciplinary journal for scientists conducting high quality, innovative research at the interface between biology and the physical sciences is pleased to announce that the latest article modelling of tumor growth and metastasis. Big-Hearted Fish Reveals Genetic Underpinnings of Enigmatic Cardiovascular Condition, According to Penn Study Researchers at the University of Pennsylvania School of Medicine have unlocked the mystery of a puzzling human disease and gained insight into cardiovascular development, all thanks to a big-hearted fish. Angiogenesis linked to poor survival in patients with rare type of ovarian cancer Researchers from The University of Texas M. D. Anderson Cancer Center have found that increased angiogenesis, or blood vessel formation, and vascular endothelial growth factor expression are associated with poor survival in women with sex cord-stromal ovarian tumors. More Lymphatic System Current Events and Lymphatic System News Articles |
|||||||||||||||||||||
|
|||||||||||||||||||||
|
|||||||||||||||||||||