Navigation Links
The vasculature emerges as a potential therapeutic target in treating ADPKD liver cysts
Date:9/23/2009

As part of an effort to develop effective medical therapies that block the progression of liver cyst growth in patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD), researchers at the University of Colorado Anschutz Medical Center have found that the liver cyst walls develop and maintain a vasculature as they grow out from the body of the liver and that factors released by epithelial cells that line the liver cyst wall lumen can drive the proliferation and development of vascular endothelial cells. The findings, which appear in the October 2009 issue of Experimental Biology and Medicine, are the result of a multi-disciplinary team assembled by Dr. Brian Doctor. Dr. Nick Barry, a biophysicist, and Dr. Ryan McWilliams, a medical resident, employed complimentary imaging techniques to visualize and characterize the vasculature within native liver cyst walls of human ADPKD patients and pkd2(WS25/-) mice, an orthologous mouse model of ADPKD. Kelley Brodsky, a senior research associate, and Dr. Claudia Amura, a cell biologist, then used in vitro assays of endothelial cell proliferation and vascular development to demonstrate that human liver cyst fluids, which contain a variety of cytokines and growth factors secreted by the liver cyst lining epithelium, are capable of driving the angiogenic phenotype of endothelial cells. Further, inhibition of VEGF receptor signaling dramatically impeded this angiogenic phenotype. Dr. Doctor noted that "by establishing the presence of the vasculature within the enlarging liver cyst walls and defining the putative signaling pathways that induce angiogenesis within them, this study opens up an exciting new direction in the quest to develop medical therapies that can block the often devastating growth of liver cysts in patients with ADPKD".

In summary, while there are differences in their vascular density and distribution, both human ADPKD and pkd2(WS25/-) mouse liver cyst walls develop vascular structures as they grow out from the liver. In vitro studies demonstrate that angiogenic factors secreted by the liver cyst wall epithelium, including VEGF-A and IL-8, can drive angiogenic development of human endothelial cells. This development is blocked by inhibition of VEGF receptor signaling. Dr. Steven R. Goodman, Editor-in-Chief of Experimental Biology and Medicine said "The article by Brodsky and colleagues provides the important insight that the liver cyst walls maintain a vasculature as they grow out from the liver and that VEGF receptor signaling plays a key role in inducing angiogenesis. These multidisciplinary studies lay a framework for the development of new therapies aimed at preventing the growth of liver cysts in patients with ADPKD".


'/>"/>

Contact: Dr. R. Brian Doctor
brian.doctor@ucdenver.edu
303-724-7224
Society for Experimental Biology and Medicine
Source:Eurekalert

Related biology news :

1. Venous origin of the mammalian lymphatic vasculature
2. Black carbon pollution emerges as major player in global warming
3. RNA emerges from DNAs shadow
4. Cataloguing invisible life: Microbe genome emerges from lake sediment
5. Pittsburgh scientists identify human source of stem cells with potential to repair muscle
6. Neuronal conduction of excitation without action potentials based on ceramide production
7. To maximize biofuel potential, researchers look for sorghums sweet spot
8. Joslin researchers uncover potential role of leptin in diabetes
9. Chemistry turns killer gas into potential cure
10. Researchers examine worlds potential to produce biodiesel
11. New inhibitor has potential as cancer drug
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... , June 2, 2016 Perimeter ... Platforms, Unmanned Systems, Physical Infrastructure, Support & Other Service  ... visiongain offers comprehensive analysis of the global ... market will generate revenues of $17.98 billion in 2016. ... DVTEL Inc, a leader in software and hardware technologies ...
(Date:5/12/2016)... , May 12, 2016 WearablesResearch.com , ... published the overview results from the Q1 wave of ... recent wave was consumers, receptivity to a program where ... with a health insurance company. "We were ... share," says Michael LaColla , CEO of Troubadour ...
(Date:4/26/2016)... LONDON , April 26, 2016 ... a product subsidiary of Infosys (NYSE: ... to integrate the Onegini mobile security platform with ... http://photos.prnewswire.com/prnh/20151104/283829LOGO ) The integration will ... to access and transact across channels. Using this ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... 2016 , ... Newly created 4Sight Medical Solutions ... healthcare market. The company's primary focus is on new product introductions, to include ... are necessary to help companies efficiently bring their products to market. , The ...
(Date:6/24/2016)... , June 24, 2016  Regular discussions on a ... take place between the two entities said Poloz. ... Ottawa , he pointed to the country,s ... the federal government. ... said, "Both institutions have common economic goals, why not sit ...
(Date:6/23/2016)... ... 23, 2016 , ... Mosio, a leader in clinical research ... Recruitment and Retention Tips.” Partnering with experienced clinical research professionals, Mosio revisits the ... tools, and strategies for clinical researchers. , “The landscape of how patients receive ...
(Date:6/23/2016)... 23, 2016 A person commits a crime, and ... to track the criminal down. An outbreak of ... Drug Administration (FDA) uses DNA evidence to track down the ... Sound far-fetched? It,s not. The FDA has increasingly used a ... of foodborne illnesses. Put as simply as possible, whole genome ...
Breaking Biology Technology: