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Latest Type 1 Issues Articles
A new system based on the islet rejection mechanism has been shown to vastly increase transplant efficiency
Researchers Discover Protein that Triggers Islet Cell Rejection
This press release is an announcement submitted by The Journal of Clinical Investigation, and was not written by Diabetes Health.
Researchers at RIKEN and Fukuoka University have pinpointed the mechanism responsible for early rejection of transplanted pancreatic islet cells in the treatment of type 1 diabetes. A new system based on this mechanism has been shown to vastly increase transplant efficiency, setting the stage for the development of powerful new treatment techniques.
Currently, the most widely used treatment for type 1 diabetes is the regular injection of insulin, a burdensome task for patients. Islet cell transplantation, whereby insulin-producing cells from a donor pancreas are transplanted into the patient's liver, is a promising alternative approach. However, it has achieved limited success due to a strong and rapid immune-mediated rejection of the transplanted islets.
With their discovery, the researchers have demonstrated that HMGB1 (high-mobility group box 1), a nuclear protein whose precise function has heretofore remained elusive, is in fact produced by the islet cells and directly triggers their early rejection. Based on this finding, they developed a system to measure the level of HMGB1 in the blood and determine the onset of rejection, information which they used to establish a treatment four times more effective than earlier islet transplantation protocols.
While shedding light on a previously unknown function of a major nuclear protein, the discovery of the HMGB1-mediated pathway also represents a breakthrough in diabetes research. For millions of diabetes sufferers around the world, its application to islet transplantation promises great improvements in this technique, bringing dreams of insulin independence one step closer to reality.
This paper is published in the February issue of The Journal of Clinical Investigation. Please click here to read the paper.
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Source:
The Journal of Clinical Investigation press release
Categories: Beta Cells, Islet & Pancreas Transplant, Research, Type 1 Issues
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