Navigation Links
Hope for children with rare genetic defect
Date:4/19/2011

This press release is available in German.

FRANKFURT, Germany. It is a rare disease with devastating consequences: Around first grade, the children start experiencing vision impairments, which two to three years later progress to complete blindness. This is the first indication of a progressive destruction of brain cells. Later on, the patients experience hallucinations, epileptic seizures, dementia and, finally, failure of all motor abilities. In this last stage, the immobile patients must be artificially ventilated. To date, there is no therapy for Juvenile Neuronal Ceroid-Lipofuscinosis (JNCL, also called Batten disease), so patients pass away in their teens or twenties. Four years ago, the working group lead by Dr. Mika Ruonala started their research at the Center for Membrane Proteomics of the Goethe University to study the consequences of the underlying genetic defect on the whole complex network of cellular proteins., In the meantime, by studying a JNCL mouse model with a novel method of fluorescence microscopy the scientists have detected several 'biomarkers' that can now be used in search for screening for potentially active drugs in cooperation with the Harvard Medical School in Boston, USA.

"A prerequisite for a large-scale screen for active ingredients is to have an understanding of the global effects that the genetic defect has on the complex network of the cells' proteins. Consequent validation of the changes in the protein networks provides new possibilities for drug-based intervention" explains Dr. Mika Ruonala. "Analogously with the gene defect it is equally important to understand the global effect a drug has on the complete protein network. A drug that solves a problem in one area may lead to serious adverse events in other areas. It is therefore important to proof the effects of a drug with as many criteria as possible." The visualization of the protein networks is possible with the help of the Multi-Epitope-Ligand Cartography (MELC), an innovative microscopy technology that produces three-dimensional "snapshots" of the arrangement of dozens of proteins in the cell. "We now know, for example, that proteins that would never meet in a healthy nervous cell have contact in JNCL, but we also know that contacts get lost due to the disease," states Anton Petcherski. During his master's thesis in Dr. Ruonala's working group, he used MELC and found several peculiarities in the protein constellation of cells from brains of transgenic mice that mimic the human JNCL. He then defined the particularly significant "biomarkers" that now serve as the basis of this screening.

At Harvard Medical School in Boston, the group of Dr. Susan Cotman has been occupied with JNCL for several years. Dr. Cotman is the "mother" of the genetically precise JNCL mouse model that the Frankfurt group uses. Dr. Cotman's working group had already carried out a high throughput screening for the active ingredients for the treatment of the disease back then, however, only a few biomarkers were known. "Since there are many anomalies in the cooperation of the proteins in the case of JNCL, the disease pattern does not necessarily improve when we are able to influence one area in a correcting manner," says Ruonala. "It is also a question of hierarchy in the protein network. Some proteins are more important for the cohesion of the network than others."

Now the two working groups are going to join forces: As part of his doctoral thesis, Anton Petcherski will be going to Boston for one year in order to search for a suitable medication for JNCL in the local drug collections. The researchers limit their search to already approved drugs, since this considerably shortens the transfer of potential medication to clinical trial. In their own laboratory, the Frankfurt group already found one active ingredient that inhibits the progression of the disease in JNCL mice. According to the bench-to-bedside strategy this drug has been used for treatment of completely different diseases for a long time and the name will be revealed when the respective data have been published. Dr. Ruonala has only revealed that two international clinical studies are about to begin within the next few months.


'/>"/>

Contact: Dr. Mika Ruonala
Ruonala@em.uni-frankfurt.de
49-697-982-9463
Goethe University Frankfurt
Source:Eurekalert  

Related medicine news :

1. Childrens doctors team up across state lines to fight disease
2. Study: Parents likely to embrace predictive genetic testing for their children if offered
3. Teachers-based intervention provides stress resistance in war-exposed children
4. Nationwide Childrens Hospital accepted to Neonatal Research Network
5. Minimally invasive thyroid surgery effective in children
6. Children victims of most eye injuries from aerosols
7. NCI awards $1.7 million to cancer specialist at Childrens Hospital Los Angeles
8. UT Southwestern pediatricians launch landmark childrens health study
9. How do life-threatening medical conditions in children impact quality of life?
10. Prenatal exposure to certain pollutants linked to behavioral problems in young children
11. Potato consumption in childrens meals leads to higher overall diet quality
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Hope for children with rare genetic defect
(Date:6/25/2016)... ... 25, 2016 , ... Experts from the American Institutes for ... Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , AIR ... care planning, healthcare costs and patient and family engagement. , AIR researchers will ...
(Date:6/25/2016)... ... , ... First Choice Emergency Room , the largest network of independent ... Director of its new Mesquite-Samuell Farm facility. , “We are pleased to announce ... Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. , ...
(Date:6/25/2016)... Canada (PRWEB) , ... June 25, 2016 , ... Conventional ... pursuit of success. In terms of the latter, setting the bar too high can ... risk more than just slow progress toward their goal. , Research from ...
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
(Date:6/24/2016)... ... 2016 , ... Comfort Keepers® of San Diego, CA is excited to announce ... program to drive cancer patients to and from their cancer treatments. Comfort Keepers ... of life and ongoing independence. Getting to and from medical treatments is one ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... June 27, 2016  VMS Rehab Systems, Inc. ( ... take whatever measures required to build a strong and ... is currently listed on the OTC Markets-pink current trading ... and CEO, "We are seeing an anomaly in market ... not only by the Company, but shareholders and market ...
(Date:6/24/2016)... , June 24, 2016  Global Blood Therapeutics, ... company developing novel therapeutics for the treatment of ... announced the closing of its previously announced underwritten ... at the public offering price of $18.75 per ... were offered by GBT. GBT estimates net proceeds ...
(Date:6/24/2016)... The Academy of Managed Care Pharmacy (AMCP) ... would allow biopharmaceutical companies to more easily share health ... and coverage decisions, a move that addresses the growing ... The recommendations address restrictions in the sharing of ... label, a prohibition that hinders decision makers from accessing ...
Breaking Medicine Technology: