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Home SCIENCE NEWS Medicine & Health

Novel muscular dystrophy gene connects to a key biological pathway

April 15, 2021
in Medicine & Health
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University of Minnesota Medical School researchers discover new disease gene

MINNEAPOLIS/ST.PAUL (04/15/2021) — New research from the University of Minnesota Medical School found mutations in a novel gene that may help identify patients with a specific form of muscular dystrophy.

The laboratory of Peter B. Kang, MD, the new director of the Paul & Sheila Wellstone Muscular Dystrophy Center at the U of M Medical School, studies the genetics and disease mechanisms of muscular dystrophy. It uses cutting-edge genomic methods to discover disease-causing mutations in patients who cannot find answers via clinical genetic test facilities.

The Kang laboratory and collaborators at the Université Libre de Bruxelles found a novel gene associated with muscular dystrophy and led an international coalition of scientists and physicians to describe a group of 13 families from around the world affected by muscular dystrophy who harbor disease-causing mutations in a gene named JAG2. The group found a distinct pattern of abnormalities on muscle MRI that may help identify other patients with this specific form of muscular dystrophy in the future. This work was begun while Kang was at the University of Florida, and completed after his arrival at the U of M Medical School.

Kang, who is also a professor and vice chair of research in the Department of Neurology at the Medical School, is the senior author of the study published today in the American Journal of Human Genetics. The major findings are:

  • Mutations in the gene JAG2 cause a form of muscular dystrophy;
  • This form of muscular dystrophy may be found in a number of countries and ethnic groups;
  • This form of muscular dystrophy is often accompanied by a distinct pattern of abnormalities on muscle MRI;
  • And, evidence for interactions between the protein product Jagged2 and the Notch signaling pathway suggests new areas of exploration for potential therapeutic development.

The Notch signaling pathway is a critically important biological pathway that is involved with the regulation of developmental and healing processes in a number of organs, including skeletal muscle.

“We hope that our findings lead to JAG2 being included in genetic testing panels for muscular dystrophy and muscle MRI being a more routine diagnostic procedure for patients with suspected muscular dystrophy who do not have a clear diagnosis on initial tests,” Kang said.

Kang and his team plan to continue exploring both small molecule and cutting-edge molecular therapeutic strategies that target the interactions between Jagged2 and the Notch signaling pathway, with the expectation that they will discover novel treatments for muscular dystrophy.

###

This research was funded by the National Institutes of Health.

About the University of Minnesota Medical School

The University of Minnesota Medical School is at the forefront of learning and discovery, transforming medical care and educating the next generation of physicians. Our graduates and faculty produce high-impact biomedical research and advance the practice of medicine. Visit med.umn.edu to learn how the University of Minnesota is innovating all aspects of medicine.

Media Contact
Kelly Glynn
[email protected]

Related Journal Article

https://med.umn.edu/news-events/novel-muscular-dystrophy-gene-connects-key-biological-pathway
http://dx.doi.org/10.1016/j.ajhg.2021.03.020

Tags: Medicine/Health
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