Navigation Links
JDRF-funded researchers discover proteins regulating human beta cell replication
Date:1/16/2009

NEW YORK, January 16, 2009 - Researchers at the University of Pittsburgh School of Medicine, funded by JDRF, have discovered that adult beta cells have the ability to replicate with the help of a protein known as cdk6. This research was led by Andrew F. Stewart, M.D., a Professor of Medicine and Chief of the Division of Endocrinology and Metabolism at the University of Pittsburgh School of Medicine. The complete findings of this discovery can be found in the early online version of Diabetes.

"Most scientists thought that these important pancreatic cells could not be induced to regenerate, or could only replicate very slowly," explained Dr. Stewart. "This work provides proof-of-principle that the production of human beta cells can be stimulated, and that those newly-generated cells function effectively both in the lab and in a living animal."

The ability of cells including human beta cells to divide or replicate is controlled by a series of events known as the cell cycle or cell division cycle. Pittsburgh researchers have taken steps to map comprehensively the proteins regulating the cell cycle in human beta cells. They examined 34 different proteins and found that cyclin dependent kinase- 6 (cdk6) alone or with cyclin D, when injected into human islets by viral delivery methods, triggered the beta cells to replicate. These transduced islets were then transplanted into diabetic mice for six weeks. The transplanted islet cells with cdk6 and cyclin D performed better than control (non-modified) human islets as measured by blood glucose levels and glucose tolerance tests in the transplanted animals. Researchers removed the transplanted cells after the six week study and confirmed that the human beta cells replicated in the transplant model.

"The question as to whether and how human beta cells can be induced to proliferate is a fundamentally important one for JDRF's Regeneration Program. Dr. Stewart and his colleagues address this question by demonstrating that modulation of specific cell cycle control proteins stimulates human beta cell replication. By identifying the control points for human beta cell cycle progression, Dr. Stewart and his colleague provide new insights and open up potentially new avenues in the search for therapies to promote beta cell regeneration in individuals with type 1 diabetes,", said Patricia Kilian, Ph.D., Therapeutic Program Director for Regeneration research at JDRF.

The ability to replicate adult human beta cells in an animal model and in vitro allows researchers the opportunity to fully understand and break down the components of cell replication. This research combines two therapeutic goals of the organization, regeneration and replacement therapy.


'/>"/>

Contact: Jillian Lubarsky
jlubarsky@jdrf.org
212-479-7626
Juvenile Diabetes Research Foundation International
Source:Eurekalert

Related biology news :

1. JDRF-funded clinical trial demonstrates continuous glucose monitoring improves blood sugar control
2. Researchers identify proteins involved in new neurodegenerative syndrome
3. Texas researchers and educators head for Antarctica
4. MGH researchers describe new way to identify, evolve novel enzymes
5. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
6. U of MN researchers discover noninvasive diagnostic tool for brain diseases
7. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
8. Researchers discover new strategies for antibiotic resistance
9. Researchers find new taste in fruit flies: carbonated water
10. Binghamton University researchers investigate evolving malaria resistance
11. UIC researchers find promising new targets for antibiotics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/22/2016)... MINNETONKA, Minn. , Nov. 22, 2016   ... that supports the entire spectrum of clinical research, is ... by Medical LiveWire Healthcare and Life Sciences Awards ... This award caps off an unprecedented year of recognition ... clinical trials for over 15 years. iMedNet ...
(Date:11/17/2016)... Global Market Watch: Primarily supported by ownership types; ... Academics) market is to witness a value of US$37.1 billion ... Compounded Annual Growth Rate (CAGR) of 10.75% is foreseen from ... 2014-2020. North America is not way ... Europe at 9.56% respectively. Report Focus: ...
(Date:11/15/2016)...  Synthetic Biologics, Inc. (NYSE MKT: SYN), a ... gut microbiome, today announced the pricing of an ... common stock and warrants to purchase 50,000,000 shares ... the public of $1.00 per share and accompanying ... offering, excluding the proceeds, if any from the ...
Breaking Biology News(10 mins):
(Date:12/6/2016)... ... December 06, 2016 , ... RoviSys, a leading ... in Aurora, Ohio, announced the opening of their new office building today. Located ... facility is home to 200 employees focused on providing sales, engineering, and support ...
(Date:12/5/2016)... ... December 05, 2016 , ... The Real Dirt ... premier cannabis technology and application experts, Chip Baker. Chip Baker formerly co-founded Royal ... the past 30 years, Chip Baker other industry veterans have made the evolution ...
(Date:12/5/2016)... CALGARY , Dec. 5, 2016 /PRNewswire/ - ... announced  that the independent Data and Safety Monitoring ... trial in high-risk cardiovascular disease (CVD) patients has ... that the study should continue as planned without ... and noted that no safety or efficacy concerns ...
(Date:12/5/2016)... , December 5, 2016 The ... with almost $108 billion of revenue and some $890 ... were spent on global biopharmaceuticals, and this figure is ... Stock-Callers.com has lined up these four equities for assessment: ... Pharmaceuticals Inc. (NASDAQ: ACAD ), Acorda Therapeutics ...
Breaking Biology Technology: