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MBL scientists find genes linked to human neurological disorders in sea lamprey genome
Date:2/24/2013

MBL, WOODS HOLE, Mass. Scientists at the Marine Biological Laboratory (MBL) have identified several genes linked to human neurological disorders, including Alzheimer's disease, Parkinson's disease and spinal cord injury, in the sea lamprey, a vertebrate fish whose whole-genome sequence is reported this week in the journal Nature Genetics.

"This means that we can use the sea lamprey as a powerful model to drive forward our molecular understanding of human neurodegenerative disease and neurological disorders," says Jennifer Morgan of the MBL's Eugene Bell Center for Regenerative Biology and Tissue Engineering. The ultimate goals are to determine what goes wrong with neurons after injury and during disease, and to determine how to correct these deficits in order to restore normal nervous system functions.

Unlike humans, the lamprey has an extraordinary capacity to regenerate its nervous system. If a lamprey's spinal cord is severed, it can regenerate the damaged nerve cells and be swimming again in 10-12 weeks.

Morgan and her collaborators at MBL, Ona Bloom and Joseph Buxbaum, have been studying the lamprey's recovery from spinal cord injury since 2009. The lamprey has large, identified neurons in its brain and spinal cord, making it an excellent model to study regeneration at the single cell-level. Now, the lamprey's genomic information gives them a whole new "toolkit" for understanding its regenerative mechanisms, and for comparing aspects of its physiology, such as inflammation response, to that of humans.

The lamprey genome project was accomplished by a consortium of 59 researchers led by Weiming Li of Michigan State University and Jeramiah Smith of the University of Kentucky. The MBL scientists' contribution focused on neural aspects of the genome, including one of the project's most intriguing findings.

Lampreys, in contrast to humans, don't have myelin, an insulating sheath around neurons that allows f
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Contact: Diana Kenney
dkenney@mbl.edu
508-289-7139
Marine Biological Laboratory
Source:Eurekalert  

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