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Attractants prevent nerve cell migration
Date:11/21/2013

says lead author Dr. Julia Ladewig, who was recently awarded a research prize of 1.25 million Euro by the North Rhine-Westphalian Stem Cell Network, which is supported by State Ministry of Science and Research.

The cause of the attractive force which has remained hidden to date involves chemical attractants which are secreted by the precursor cells. "In this way, the nerve precursor cells prevent the mature brain cells from penetrating further into the tissue," says Dr. Philipp Koch, who performed the primary work for the study as an additional lead author, together with Dr. Ladewig.

The scientists had initially observed that, the more precursor cells contained in the transplant, the worse the migration of nerve cells is. In a second step, the researchers from the Institute for Reconstructive Neurobiology at Bonn University were able to decode and inactivate the attractants responsible for the agglomeration of mature and immature neurons. When the scientists deactivated the receptor tyrosine kinase ligands FGF2 and VEGF with inhibitors, mature nerve cells migrated better into the animal brains and dispersed over much larger areas.

Promising universal approach for transplants

"This is a promising new approach to solve an old problem in neurotransplantation," Prof. Brstle summarizes. Through the inhibition of attractants, the migration of implanted nerve precursor cells into the brain can be significantly improved. As the researchers have shown in various models with precursor cells from animals and humans, the mechanism is a fundamental principle which also functions across species. "However, more research is still needed to transfer the principle into clinical application," says Prof. Brstle.


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Contact: Dr. Oliver Brüstle
r.neuro@uni-bonn.de
49-228-688-5500
University of Bonn
Source:Eurekalert

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