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Toward An Effective Treatment For Spinal Muscular Atrophy

Date:
October 14, 2008
Source:
American Chemical Society
Summary:
Scientists are reporting a key advance toward developing the first effective drug treatment for spinal muscular atrophy (SMA), a genetic disease that involves motor neuron loss and occurs in 1 out of every 6,000 births. SMA is the leading cause of hereditary infant death in the United States.

Scientists are reporting a key advance toward developing the first effective drug treatment for spinal muscular atrophy (SMA), a genetic disease that involves motor neuron loss and occurs in 1 out of every 6,000 births. SMA is the leading cause of hereditary infant death in the United States.

Mark E. Gurney, Jill Jarecki, and colleagues note that SMA is caused by a defective gene, SMN1, which fails to produce sufficient amounts of a key protein, called SMN (survival motor neuron), needed for normal motor neuron development. Scientists have screened more than 550,000 compounds in the search for a new SMA drug. Recent research pointed to a group of compounds called C5-quinazolines that can boost SMN2 activity, a uniquely existing back-up gene for SMN1. In doing so, they showed promise for treating SMA by producing increased amounts of the needed protein.

In the new study, researchers identified exactly how these promising compounds work, a key step in moving forward toward medical use. They found that the substance targets a normal cellular protein, DcpS, involved in mRNA metabolism whose inhibition causes increased SMN expression. The finding could help guide the development of the first effective drugs for treating SMA and also lead to second generation drugs targeting this enzyme, the researchers say.

"The results outlined in the paper and carried out in collaboration with Families of SMA, deCODE chemistry & biostructures, Invitrogen Corporation, and Rutgers University represent a new understanding of the physiological mechanisms that can increase SMN expression and will allow us to move forward in advancing potential treatments for it, says Jill Jarecki, Ph.D., Research Director at Families of SMA.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Singh et al. DcpS as a Therapeutic Target for Spinal Muscular Atrophy. ACS Chemical Biology, October 2008 DOI: 10.1021/cb800120t

Cite This Page:

American Chemical Society. "Toward An Effective Treatment For Spinal Muscular Atrophy." ScienceDaily. ScienceDaily, 14 October 2008. <www.sciencedaily.com/releases/2008/10/081013110208.htm>.
American Chemical Society. (2008, October 14). Toward An Effective Treatment For Spinal Muscular Atrophy. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2008/10/081013110208.htm
American Chemical Society. "Toward An Effective Treatment For Spinal Muscular Atrophy." ScienceDaily. www.sciencedaily.com/releases/2008/10/081013110208.htm (accessed April 20, 2014).

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