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Rare Disease Day: Advanced tech for genetic liver disorder patients.

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TLDR:

  • Researchers used mRNA technology to develop a therapy for a rare genetic liver disorder called argininosuccinic aciduria.
  • The therapy showed promising results in correcting the metabolic condition in mice, paving the way for potential treatments in rare diseases.

February 29th is dedicated to raising awareness about rare diseases and looking into the opportunities technology could bring for potential treatments, so let’s shine the spotlight on one such breakthrough for argininosuccinic aciduria. Scientists from UCL, King’s College London, and Moderna have used the technology behind COVID-19 vaccines to create a promising therapy for a rare genetic liver disorder. Their research, published in Science Translational Medicine, showed the potential of messenger RNA (mRNA) in correcting argininosuccinic aciduria, a rare metabolic condition affecting approximately one in 100,000 newborns worldwide.

Argininosuccinic aciduria disrupts the body’s ability to metabolize proteins, potentially leading to dangerous ammonia levels in the bloodstream. Patients with this condition experience imbalances in glutathione regulation, which is crucial for liver detoxification. Unlike traditional gene therapy methods, which often rely on modified viruses and can trigger adverse immune reactions, the team explored mRNA technology as a safer alternative.

MRNA carries instructions for protein synthesis, and by confining it within lipid microdroplets, researchers could specifically target liver cells when administered intravenously. The therapy was tested on 31 mice; the mice treated with mRNA survived significantly longer than untreated mice, with some surviving for over three months. Positron emission tomography (PET) scans revealed correction of glutathione regulation, indicating the success of the treatment.

With an estimated 300 million individuals worldwide affected by rare diseases, this innovation holds promise for managing unmet medical needs. The research team aims to translate their findings into clinical trials, offering hope for patients affected by inherited liver diseases, particularly children. By using the success of mRNA therapy in rare diseases, they imagine a future where cutting-edge technology transforms the landscape of genetic medicine, providing targeted and effective treatments for rare diseases.


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