{"id":11944,"date":"2025-03-10T21:36:45","date_gmt":"2025-03-10T21:36:45","guid":{"rendered":"https:\/\/site.itshrt.com\/worldnews\/mutated-dna-restored-to-normal-in-gene-therapy-advance\/"},"modified":"2025-03-10T21:36:45","modified_gmt":"2025-03-10T21:36:45","slug":"mutated-dna-restored-to-normal-in-gene-therapy-advance","status":"publish","type":"post","link":"https:\/\/site.itshrt.com\/worldnews\/mutated-dna-restored-to-normal-in-gene-therapy-advance\/","title":{"rendered":"Mutated DNA Restored to Normal in Gene Therapy Advance"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<\/p>\n<div data-testid=\"companionColumn-0\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Researchers have corrected a disease-causing gene mutation with a single infusion carrying a treatment that precisely targeted the errant gene.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">This was the first time a mutated gene has been restored to normal.<\/p>\n<p class=\"css-at9mc1 evys1bk0\"><a class=\"css-yywogo\" href=\"https:\/\/investors.beamtx.com\/news-releases\/news-release-details\/beam-therapeutics-announces-positive-initial-data-beam-302-phase\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">The small study<\/a> of nine patients announced Monday by the company Beam Therapeutics of Cambridge, Mass., involved fixing a spelling error involving the four base sequences \u2014 G, A, C and T \u2014 in DNA. The effect was to change an incorrect DNA letter to the right one. The result was a normal gene that functioned as it should, potentially halting liver and lung damage of patients with a rare disorder.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cThis is the beginning of a new era of medicine,\u201d said Dr. Kiran Musunuru, a gene therapy researcher at the University of Pennsylvania\u2019s Perelman School of Medicine.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">He added that the method offers the hope of treating other genetic diseases precisely by fixing mutations \u2014 an alternative to current gene therapies, which either add new genes to compensate for mutated ones, or slicing DNA to silence genes.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-1\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Dr. Musunuru is a co-founder and equity holder of Verve Therapeutics, a gene therapy company, and receives funding from Beam Therapeutics for research, but not for this study.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. Richard P. Lifton, president of Rockefeller University and head of its Laboratory of Human Genetics and Genomics, said the sort of gene editing Beam did, rewriting genes with an infusion, \u201cis a holy grail\u201d that \u201chas the promise for being a one-and-done kind of therapy.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. Lifton is a director of Roche Pharmaceuticals and its subsidiary Genentech.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Despite the study\u2019s small size, he said the results are \u201ca very impressive advance and very promising.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">The study involved patients who have <a class=\"css-yywogo\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK442030\/#:~:text=AAT%20deficiency%20is%20a%20condition,Go%20to:\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">alpha-1 antitrypsin deficiency<\/a>, or AATD, a genetic disease that affects an estimated 100,000 Americans, mostly of European ancestry. That makes it as common as sickle cell in this country. It is progressive and incurable.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-2\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">The alpha-1 antitrypsin protein is made in the liver and normally goes <a class=\"css-yywogo\" href=\"https:\/\/www.lung.org\/lung-health-diseases\/lung-disease-lookup\/alpha-1-antitrypsin-deficiency\/learn-about-alpha-1-antitrypsin-defiency\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">to the lungs and protects them<\/a> from inflammation from inhaled irritants like smoke or dust. But in people with the disease, a single change in a DNA letter in the gene results in a misshapen and nonfunctional protein. The result is often emphysema or chronic obstructive pulmonary disease in unprotected lungs.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-3\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">But many of the aberrant alpha-1 antitrypsin proteins never get to the lungs and instead build up in patients\u2019 livers, often causing cirrhosis.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">The gene editing was simple for patients. They sat in a chair for a couple of hours while lipid nanoparticles, like those used in Covid vaccines, were infused into their blood. The nanoparticles did not hold vaccines, though. Instead, they encased a microscopic gene editor. The lipid casing protected the editor on a journey to the liver.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">When the nanoparticles reached the liver, the lipid layer peeled off, releasing the editor \u2014 a disabled CRISPR molecule that acted like a GPS for the genome and an enzyme to fix the mutation. The CRISPR molecule crawled along the patient\u2019s DNA until it found the one incorrect letter that needed to be repaired among the three billion DNA letters in the genome. Then the editing enzyme replaced that letter with the correct one.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">The study divided the patients into three groups and tested three different doses of the gene editor. Those who got the highest dose made enough normal alpha-1 antitrypsin to be in a range where no more damage should occur. There were no serious side effects, said John Evans, Beam\u2019s chief executive officer.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-4\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Beam will now be offering the higher dose to the patients who got the lower doses in the company\u2019s study. Beam will also study the treatment in more patients, and test an even higher dose of its gene editor.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cAnd then we immediately have to think about how we can get this approved,\u201d Mr. Evans said.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. Noel McElvaney, a professor at the Royal College of Surgeons in Ireland and an investigator in the Beam study, said there\u2019s a real need for an effective treatment to halt the damage done by the mutated gene. He said he sees patients in their 30s and 40s with severe emphysema and \u201creally bad liver disease.\u201d And, he said, \u201cby the time we see them there is already a significant amount of damage.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">For those suffering the worst effects of AATD, he said, the new gene therapy is \u201ca major major breakthrough.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cThe big pro\u201d of the new treatment, he said, is that \u201cit theoretically cures the liver and lung disease in one go.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. McElvaney added, though, that \u201clike all genetic interventions, we have to follow up for a long time to make sure it\u2019s as good as we think it is.\u201d<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-5\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">But patients now have renewed hope, said Dr. Andrew Wilson, scientific director of the Alpha-1 Foundation, an advocacy group.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cWe have been dreaming of gene therapy as a treatment for this disease,\u201d he said.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/www.nytimes.com\/2025\/03\/10\/health\/gene-editing-beam-mutation-dna.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers have corrected a disease-causing gene mutation with a single infusion carrying a treatment that precisely targeted the errant gene.<\/p>\n","protected":false},"author":1,"featured_media":11945,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[3948,3952,3950,3951,1920,1757,3949,2625,3776,268],"class_list":["post-11944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","tag-alpha-1-antitrypsin-deficiency","tag-beam-therapeutics-inc","tag-cirrhosis","tag-crispr-dna","tag-genetic-engineering","tag-genetics-and-heredity","tag-liver","tag-lungs","tag-rare-and-orphan-diseases","tag-research"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mutated DNA Restored to Normal in Gene Therapy Advance - World News<\/title>\n<meta name=\"robots\" content=\"index, follow, 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