Using Cotton Candy To Create Routes For Blood-flow

Main Category: Stem Cell Research
Also Included In: Biology / Biochemistry
Article Date: 13 Feb 2009 - 3:00 PDT

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A lollipop at the end of a doctor's visit may ease the sobs of a crying child, but now, researchers hope to use other sugary structures with the hope of healing patients. A team of physicians and scientists from NewYork-Presbyterian Hospital/Weill Cornell Medical Center in New York City and Cornell University in Ithaca, New York, may have developed a way to create engineered tissue that is better accepted by the body. Currently, engineered tissues are used to take the place of damaged tissue due to injury, burns or from surgical procedures. However, they are limited in size and often die from a lack of blood supply that provides life-giving nutrients.

"For decades, the lack of a suitable blood supply has been the major limitation of tissue engineering," explains Dr. Jason Spector, a plastic surgeon at NewYork-Presbyterian/Weill Cornell and assistant professor at Weill Cornell Medical College. "Without a network of blood vessels, only small, thin swaths of engineered tissue have longevity in the body."

Using crystalline sugar, scientists created a network of tiny tubes to act as tunnels, capable of shuttling nutrition-rich blood between the body's natural tissue and an artificial graft. To create the sugar fibers, researchers at The Cornell NanoScale Science & Technology Facility in Ithaca used a common cotton candy machine. Results from the project have been published in the most recent online issue of the journal Soft Matter.

A polymer is then poured over this matrix. Once hardened, the implant is soaked in warm water, dissolving the sugars, and leaving behind a web of three-dimensional hollow micro-channels. The study is in very early stages and is not yet approved for clinical use. However, promising early findings show that this novel method successfully infuses the implant with life-giving blood. The goal is to allow for the development of larger and more complex implants, fed by a person's own circulatory system.

Collaborators on the project include Drs. Leon M. Bellan and Harold G. Craighead, from the School of Applied and Engineering Physics at Cornell University.

Weill Cornell Science Briefs

Weill Cornell Science Briefs is an electronic newsletter published by the Office of Public Affairs that focuses on innovative medical research and patient care at Weill Cornell Medical College and NewYork-Presbyterian Hospital/Weill Cornell Medical Center. The newsletter is sent electronically to journalists and available to all on this Web site. To read Science Briefs on the Web, please visit: http://med.cornell.edu/science.

NewYork-Presbyterian Hospital/Weill Cornell Medical Center

NewYork-Presbyterian Hospital/Weill Cornell Medical Center, located in New York City, is one of the leading academic medical centers in the world, comprising the teaching hospital NewYork-Presbyterian and Weill Cornell Medical College, the medical school of Cornell University. NewYork-Presbyterian/Weill Cornell provides state-of-the-art inpatient, ambulatory and preventive care in all areas of medicine, and is committed to excellence in patient care, education, research and community service. Weill Cornell physician-scientists have been responsible for many medical advances -- from the development of the Pap test for cervical cancer to the synthesis of penicillin, the first successful embryo-biopsy pregnancy and birth in the U.S., the first clinical trial for gene therapy for Parkinson's disease, the first indication of bone marrow's critical role in tumor growth, and, most recently, the world's first successful use of deep brain stimulation to treat a minimally conscious brain-injured patient. NewYork-Presbyterian, which is ranked sixth on the U.S.News & World Report list of top hospitals, also comprises NewYork-Presbyterian Hospital/Columbia University Medical Center, Morgan Stanley Children's Hospital of NewYork-Presbyterian, NewYork-Presbyterian Hospital/Westchester Division and NewYork-Presbyterian Hospital/The Allen Pavilion. Weill Cornell Medical College is the first U.S. medical college to offer a medical degree oversees and maintains a strong global presence in Austria, Brazil, Haiti, Tanzania, Turkey and Qatar. For more information, visit http://www.nyp.org and http://www.med.cornell.edu.

NewYork-Presbyterian Hospital
Weill Cornell Medical Center

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