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    You are at:Home»News»New ‘smart’ nanotherapeutics can deliver drugs directly to the pancreas

    New ‘smart’ nanotherapeutics can deliver drugs directly to the pancreas

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    By Rajeev Singla on January 15, 2012 News

    A research collaboration between the Wyss Institute for Biologically Inspired Engineering at Harvard University and Children’s Hospital Boston has developed “smart” injectable nanotherapeutics that can be programmed to selectively deliver drugs to the cells of the pancreas. Although this nanotechnology will need significant additional testing and development before being ready for clinical use, it could potentially improve treatment for Type I diabetes by increasing therapeutic efficacy and reducing side effects.

    The approach was found to increase drug efficacy by 200-fold in in vitro studies based on the ability of these nanomaterials to both protect the drug from degradation and concentrate it at key target sites, such as regions of the pancreas that contain the insulin-producing cells. The dramatic increase in efficacy also means that much smaller amounts of drugs would be needed for treatment, opening the possibility of significantly reduced toxic side effects, as well as lower treatment costs.

    The research was led by Wyss Institute Founding Director Donald Ingber M.D., Ph.D. and Kaustabh Ghosh, Ph.D., a former postdoctoral fellow at Children’s Hospital Boston. Their findings appear in the current issue of Nano Letters. Ingber is also the Judah Folkman Professor of Vascular Biology at Harvard Medical School and Children’s Hospital Boston, and Professor of Bioengineering at Harvard’s School of Engineering and Applied Sciences. Ghosh is now an Assistant Professor of Bioengineering at the University of California, Riverside. Wyss Institute Postdoctoral Fellows, Umai Kanapathipillai and Netanel Korin, also contributed to the work, as did Jason McCarthy, Assistant Professor in Radiology at Harvard Medical School and an Assistant in Chemistry at Massachusetts General Hospital.

    Type I diabetes, which often strikes children and young adults, is a debilitating disease in which the body’s immune system progressively destroys the cells in the pancreas that produce insulin. According to the Juvenile Diabetes Research Foundation, as many as 3 million Americans have the disease and some 30,000 new cases are diagnosed every year. The risk of developing Type I diabetes, which can lead to serious health complications such as kidney failure and blindness, can be predicted with 90 percent accuracy. But therapeutic intervention for people identified as high risk has been limited because many systemic treatments are barred from clinical use due to the severe side effects they produce when used at the high doses required to achieve a therapeutic response.

    “The consequences of Type I diabetes are felt in both the people who live with the disease and in the terrible strain that treatment costs put on the economy,” said Ingber. “In keeping with our vision at the Wyss Institute, we hope that the programmable nanotherapy we have developed here will have a major positive impact on people’s lives in the future.”

    Using nanoparticles that can be programmed to deliver drug or stem cell therapies to specific disease sites is an excellent alternative to systemic treatments because improved responses can be obtained with significantly lower therapeutic doses and hence, fewer side effects. To date, such nanotherapeutics have been developed primarily to treat cancer, since they can home in on the tumor via its leaky blood vessels. The challenge has been to develop ways to selectively deliver drugs to treat other diseases in which the tissues of interest are not as easily targeted. The research team addressed this problem by using a unique homing peptide molecule to create “smart” nanoparticles that can seek out and bind to the capillary blood vessels in the islets of the pancreas that feed the insulin-producing cells most at risk during disease onset.

    The research was supported by the Wyss Institute and a SysCODE (Systems-Based Consortium for Organ Design and Engineering) grant from the National Institutes of Health that supports a group of seven clinical and academic institutions working to develop new ways to induce regeneration of organs, including the pancreas.

    About the Wyss Institute for Biologically Inspired Engineering at Harvard University
    The Wyss Institute for Biologically Inspired Engineering at Harvard University uses Nature’s design principles to develop bioinspired materials and devices that will transform medicine and create a more sustainable world. Working as an alliance among Harvard’s Schools of Medicine, Engineering, and Arts & Sciences, and in partnership with Beth Israel Deaconess Medical Center, Brigham and Women’s Hospital, Children’s Hospital Boston, Dana Farber Cancer Institute, Massachusetts General Hospital, the University of Massachusetts Medical School, Spaulding Rehabilitation Hospital, and Boston University, the Institute crosses disciplinary and institutional barriers to engage in high-risk research that leads to transformative technological breakthroughs. By emulating Nature’s principles for self-organizing and self-regulating, Wyss researchers are developing innovative new engineering solutions for healthcare, energy, architecture, robotics, and manufacturing. These technologies are translated into commercial products and therapies through collaborations with clinical investigators, corporate alliances, and new start-ups.

     

    Source: World Pharma News

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