Navigation Links
Diabetes Research Institute develops oxygen-generating biomaterial
Date:3/1/2012

Miami, FL March 1, 2012 -- Scientists at the Diabetes Research Institute have developed a revolutionary technique to provide critical oxygen for maintaining the survival of insulin-producing cells. This is the first time that scientists have been able to successfully deliver oxygen locally to beta cells using a biomaterial. The results of the study, which represents a major step toward the goal of developing an alternative site to house insulin-producing cells, were just published in the prestigious journal Proceedings of the National Academy of Sciences (PNAS).

One of the major problems with the transplantation of cells, particularly beta cells, is meeting the high nutrient demand of these cells following transplantation. During the initial days of implantation, these cells do not have a functioning vascular network feeding oxygen to the cells, thus cells become starved and large cell loss occurs.

The DRI team, led by Dr. Cherie Stabler, developed a novel oxygen-generating material (termed PDMS-CaO2), which has the capacity to generate this critical element when exposed to water. This spontaneous generation of oxygen creates a nutrient-rich environment with sustained oxygen supplementation for more than six weeks. With this unique biomaterial system, the duration and amount of oxygen generated can be elegantly controlled, thereby providing the ideal environment for the cells. The potential of this technique to enhance beta cell survival with the use of this material was illustrated by incubating beta cells and islets in conditions that mimic the native pancreas.

"We have been working to create an optimal environment for housing transplanted islets that mimics the native pancreas, akin to a 'mini organ,' and this study represents a significant step toward that goal," says Dr. Cherie Stabler. "This oxygen-generating biomaterial provides the supplemental oxygen needed by the islets and serves as a bridge until the vascular bed (blood vessels) is formed, providing natural oxygen delivery to the insulin-producing cells."

In the study, the researchers also used a 3D model, similar to the bioengineered scaffold, to demonstrate that the oxygen-generating material was able to prevent cell death due to inadequate oxygen levels. With these promising results, future studies are focused on translating these studies to implanted grafts, with the end goal of preserving islet viability during the precarious engraftment period.

"This novel method for sustained oxygen delivery within the microenvironment of tissue-engineered sites, could be critically important to improve the survival of transplanted cellular products. The new platform technology could be particularly useful during the delicate post-implantation phase, in which new blood vessels are growing to provide full nutritional and oxygen support to the transplanted tissue," said Dr. Camillo Ricordi, DRI scientific director.

"We are very encouraged by the outcome of this study and its implications toward our goal of translating these findings to the millions of people living with diabetes," added Dr. Stabler.


'/>"/>

Contact: Lori Weintraub
Lweintraub@drif.org
954-964-4040
Diabetes Research Institute Foundation
Source:Eurekalert

Related biology news :

1. VTT searches for novel biomarkers and targets for preventing or treating Type 2 diabetes
2. Diabetes risk factors in young Sri Lankans much higher than previously thought
3. Largest-ever gene study of Type 2 diabetes finds variants across many ethnic groups
4. Body clock receptor linked to diabetes in new genetic study
5. Genetic regulation of metabolomic biomarkers - paths to cardiovascular diseases and type 2 diabetes
6. La Jolla Institute scientist takes quest to conquer Type 1 diabetes to the next level
7. La Jolla Institute researchers identify pivotal immune cell in Type 1 diabetes in humans
8. UCSF, Sanofi collaborate to find new diabetes cures
9. How poor maternal diet can increase risk of diabetes -- new mechanism discovered
10. How poor maternal diet can increase risk of diabetes - new mechanism discovered
11. Study finds air pollution linked to diabetes and hypertension in African-American women
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2016)... January 21, 2016 ... new market research report "Emotion Detection and Recognition Market by ... Tools (Facial Expression, Voice Recognition and Others), Services, ... forecast to 2020", published by MarketsandMarkets, the global ... reach USD 22.65 Billion by 2020, at a ...
(Date:1/20/2016)... , Jan. 20, 2016  Synaptics Incorporated (NASDAQ: ... interface solutions, today announced sampling of S1423, its ... wearables and small screen applications including smartwatches, fitness ... Supporting round and rectangular shapes, as well as ... performance with moisture on screen, while wearing gloves, ...
(Date:1/13/2016)... --> --> ... report titled - Biometric Sensors Market - Global Industry Analysis, ... to the report, the global biometric sensors market was valued at ... US$1,625.8 mn by 2023, expanding at a CAGR of ... the biometric sensors market is expected to reach 1,799.6 ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... , February 11, 2016 ... Corporation ("PositiveID" or "Company") (OTCQB: PSID), a life ... today that its Thermomedics subsidiary, which markets the ... its growth plan in January 2016, including entering ... increasing sequential monthly sales growth, and establishing several ...
(Date:2/11/2016)... , ... February 11, 2016 , ... ... more than 150 years, continues today to pursue the highest level of accuracy ... analytical instruments: the AR9 Refractometer and the AR5 Refractometer. Accurate, reliable and ...
(Date:2/11/2016)... ... 11, 2016 , ... Global Stem Cells Group, ... Ecuador. The new facility will provide advanced protocols and state-of-the-art techniques in cellular ... , The new GSCG clinic is headed by four prominent Ecuadorian physicians, ...
(Date:2/10/2016)... , February 10, 2016 Early-career researchers ... , Peru , Uganda and ... life-enhancing work in health and nutrition   Indonesia ... Uganda and Yemen are being ... and epidemiology. They are also celebrated for mentoring young women scientists who ...
Breaking Biology Technology: