The new source of islet cellsOctober 25, 2007The shortage of islet cells limits the development of islet transplantation. One new approach was reported in the October 21 issue of the World Journal of Gastroenterology because of its great significance in enhancing the output of islet cells. This article will undoubtedly bring benefit to diabetic patients. The article describes the differentiation of rat pancreatic ductal epithelial cells into insulin-producing cells by the transfection of PDX-1. In recent years, though great efforts have been made to differentiate embryonic stem cells, pancreatic ductal epithelial multipotent progenitor cells and bone marrow stem cells into islet cells, the process of cell differentiation and growth is long. Moreover, the amount of islet cells of differentiation, and the insulin released by islets, is not enough to meet the clinical needs. To shorten the process of differentiation and enhance the output of insulin-producing cells and increase the amount of insulin-releasing, Dr Liu et al. transfected PDX-1 into primary pancreatic ductal epithelial cells and then differentiated the transfected cells into insulin-producing cells. In contrast, the expression of PDX-1 and insulin mRNA and protein were detectable in the transfected cells. Endogenous PDX-1 might play an important role during differentiation and the transfected cells can produce more insulin-releasing cells and release more insulin after induction. The results of this study suggest a promising future for many diabetic patients who need islets transplantation. Due to the high percentage of diabetes mellitus and severe complications around the world, this case reported by Dr. Liu et al. is surely worth the attention of the researchers of diabetes. World Journal of Gastroenterology |
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| Related Islet Cells Current Events and Islet Cells News Articles Green tea component may help preserve stored platelets, tissues In two separate studies, a major component in green tea, epigallocatechin-3-O-gallate (EGCG), has been found to help prolong the preservation of both stored blood platelets and cryopreserved skin tissues. Stem cell research: From molecular physiology to therapeutic applications Stem cell research promises remedies to many devastating diseases that are currently incurable, ranging from diabetes and Parkinson's disease to paralysis. Reducing p38MAPK levels delays aging of multiple tissues in lab mice In the new issue of the Developmental Cell journal, a team of scientists at Singapore's Agency for Science, Technology and Research (A*STAR) and the University of North Carolina School of Medicine at Chapel Hill, report research findings about the molecular mechanisms behind the aging process, which has up till now been poorly understood, that offer the possibility that a novel, pharmacological approach could be developed to combat age-related disorders. New Role Discovered for Molecule Important in Development of Pancreas, Penn Study Finds For years researchers have been searching for a way to treat diabetics by reactivating their insulin-producing beta cells, to no avail. Now, they may be one step closer. A protein, whose role in pancreatic development has long been recognized, has been discovered to play an additional and previously unknown regulatory role in the development of cells in the immature endocrine system. Device Protects Transplanted Pancreatic Cells from the Immune System Scientists at Burnham Institute for Medical Research (Burnham) and the University of California San Diego (UC San Diego) School of Medicine have demonstrated in mice that transplanted pancreatic precursor cells are protected from the immune system when encapsulated in polytetrafluorethylene (PTFE). Stem cell infusion and hyperbaric oxygen treatment improve islet function in diabetes A study to determine if patients with type 2 diabetes can benefit from a combination of autologous (patient self-donated) stem cell infusions (ASC) and hyperbaric (above the normal air pressure of ) oxygen treatment (HBO) before and after ASC has found "significant benefits" in terms of "improvements in glycemic control" along with "reduced insulin requirements." Molecule that suppresses immune response under study in type 1 diabetes The idea is to teach the immune system of children at high risk for type 1 diabetes not to attack the insulin-producing cells of the pancreas. Cell transplantation and diabetes: New sites, new devices Early attempts at islet cell transplantation to treat diabetes date to the nineteenth century, decades before the discovery of insulin in the 1930s. Researcher tricks immune system in diabetic mice The body's immune system hates strangers. When its security patrol spots a foreign cell, it annihilates it. Potential diabetes treatment selectively kills autoimmune cells from human patients In experiments using blood cells from human patients with diabetes and other autoimmune disorders, Massachusetts General Hospital (MGH) researchers have confirmed the mechanism behind a potential new therapy for type 1 diabetes. More Islet Cells Current Events and Islet Cells News Articles |
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