{"id":7081,"date":"2025-11-18T15:41:06","date_gmt":"2025-11-18T14:41:06","guid":{"rendered":"https:\/\/alpha1-deutschland.org\/?p=7081"},"modified":"2026-04-13T10:29:00","modified_gmt":"2026-04-13T08:29:00","slug":"dna-rna-therapien","status":"publish","type":"post","link":"https:\/\/alpha1-deutschland.org\/en\/dna-rna-therapien","title":{"rendered":"DNA and RNA interventions for the treatment of alpha-1 antitrypsin deficiency"},"content":{"rendered":"<div id=\"fws_6a9021f059355\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row full-width-section\"  style=\"padding-top: 0px; padding-bottom: 50px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t<div class=\"vc_separator wpb_content_element vc_separator_align_center vc_sep_width_100 vc_sep_border_width_5 vc_sep_pos_align_center vc_sep_color_grey wpb_content_element vc_separator-has-text\" ><span class=\"vc_sep_holder vc_sep_holder_l\"><span class=\"vc_sep_line\"><\/span><\/span><h4>Author<\/h4><span class=\"vc_sep_holder vc_sep_holder_r\"><span class=\"vc_sep_line\"><\/span><\/span>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p style=\"font-weight: 400;\"><strong>Heinz Stutzenberger, as appeared in <a href=\"https:\/\/alpha1-deutschland.org\/en\/alpha1-journal-ausgabe-2-2025\/\">Alpha1 Journal 2\/2025<\/a>.<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"divider-wrap\" data-alignment=\"default\"><div style=\"margin-top: 25px; height: 5px; margin-bottom: 25px;\" data-width=\"100%\" data-animate=\"\" data-animation-delay=\"\" data-color=\"default\" class=\"divider-border\"><\/div><\/div>\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p><strong>Alpha-1 antitrypsin deficiency (AATD) of the Pi*Z genotype is well on its way to becoming a prototype for new genetic engineering treatments based on manipulating DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). This is because this form of AATD is caused by a single incorrect (mutated) base pair at a precisely defined location in the genetic material, and will therefore be easier to treat than other inherited predispositions or diseases caused by multiple mutations.<\/strong><\/p>\n<\/div>\n\n\n\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\n\t\t<div id=\"fws_6a9021f05a9ef\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t<div class=\"divider-wrap\" data-alignment=\"center\"><div style=\"margin-top: 25px; width: 20%; height: 2px; margin-bottom: 25px;\" data-width=\"20%\" data-animate=\"\" data-animation-delay=\"\" data-color=\"accent-color\" class=\"divider-small-border\"><\/div><\/div>\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p>Given this starting point, it is natural that Alphas would gain a deeper understanding of the connections, and a webinar organized by the Alpha-1 Europe Alliance, the umbrella organization of national European Alpha-1 associations, served this purpose for its member representatives. The presentation was given by Marion Bouchekareilh, who conducts research on AATM at the Bordeaux Research Institute for Translational Oncology and who participates as a guest for France in the monthly general meetings of the Alpha-1 Europe Alliance. Her remarks are summarized below:<\/p>\n<p>Human genetic information, which controls the structure, function, and repair of the body, is stored in DNA. This is located in the cell nucleus and consists of approximately six billion base pairs arranged in a double helix. Only four different bases are used, designated by the letters A, T, C, and G. Among other information, DNA also encodes the instructions for protein production in liver cells (hepatocytes), including alpha-1 antitrypsin. In alpha-1 antitrypsin deficiency (AATD) with the genotype PI*ZZ, two specific base pairs are incorrectly inserted. DNA and RNA interventions are used to treat this deficiency. As a result, the protein produced is shaped somewhat differently than the normal AAT molecule, or rather, misfolded. Due to this misfolding, it tends to clump together and can no longer leave the liver cells: Alpha-1 antitrypsin deficiency develops.<\/p>\n<p>When producing proteins, cells cannot directly access the DNA contained within the cell nucleus as a template. Instead, a kind of copy of the DNA, called RNA, is created. This RNA is then secreted from the nucleus and directs protein production. Errors in the DNA are naturally also found in the RNA. However, the production of a specific protein only requires a copy of a particular section of DNA. This copy, which exists for every protein produced in the body, is called mRNA, or messenger RNA.<\/p>\n<p>The novel drugs now target different points in protein synthesis:<br \/>\n\u2022 either by altering\/correcting the DNA<br \/>\n\u2022 or by altering\/correcting the mRNA<br \/>\n\u2022 or by switching off the mRNA (and thus preventing specific protein production)<\/p>\n<p>Different techniques are used depending on the goal of the procedure.<\/p>\n<p>The CRISPR-Cas9 method, also known as gene editing, is used to modify the DNA. A larger section of DNA in the liver cells, containing the faulty information, is cut out and replaced with a corrected section, so that after treatment, normal AAT is produced in the affected cells. The resulting DNA modification in the liver cells is passed on during continuous cell renewal, so that ideally, this treatment involves a single dose of the drug, the effect of which then lasts a lifetime. However, this advantage also comes with one of the risks of this treatment: When using gene editing, neighboring base pairs can be unintentionally altered, which could lead to unwanted side effects that would then also be lifelong. The company Beam Therapeutics is working on developing such a therapy; Intellia discontinued development of AAT at the end of 2024 (and the clinical trial for a drug for another disease had to be interrupted due to an unexplained death (as of November 2025)).<\/p>\n<p>mRNA is constantly being produced and broken down. Interventions at the RNA level therefore only have a temporary effect; a drug that modifies mRNA must be administered regularly. The so-called ADAR technique allows for the targeted repair of a single base pair on the mRNA, significantly reducing the risk of unwanted side effects. Should these side effects nevertheless occur, they are expected to decrease as the modified mRNA is broken down in the body, and side effects typically subside after a few weeks. Such drugs are currently being developed by the companies WAVE, KORRO, PrimeMedicine, ADARx, and AIRNA.<\/p>\n<\/div>\n\n\n\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\n\t\t<div id=\"fws_6a9021f05ba58\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 50px; padding-bottom: 50px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-6 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t<div class=\"img-with-aniamtion-wrap\" data-max-width=\"100%\" data-max-width-mobile=\"default\" data-shadow=\"none\" data-animation=\"none\" >\n      <div class=\"inner\">\n        <div class=\"hover-wrap\"> \n          <div class=\"hover-wrap-inner\">\n            <img loading=\"lazy\" decoding=\"async\" class=\"img-with-animation skip-lazy\" data-delay=\"0\" height=\"374\" width=\"288\" data-animation=\"none\" src=\"https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Die-Z-Variante.jpg\" alt=\"Illustration der Z-AAT-Variante: Oben ein stilisiertes DNA-Symbol mit hervorgehobener Mutation.\" srcset=\"https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Die-Z-Variante.jpg 288w, https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Die-Z-Variante-231x300.jpg 231w\" sizes=\"auto, (max-width: 288px) 100vw, 288px\" \/>\n          <\/div>\n        <\/div>\n        \n      <\/div>\n    <\/div>\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p><strong>The Z variant of alpha-1 antitrypsin<\/strong><br \/>\nThe Z mutation is a small \u201echange\u201c in the DNA \u2013 a bit like a typo in a text.<\/p>\n<\/div>\n\n\n\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n\n\t<div  class=\"vc_col-sm-6 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t<div class=\"img-with-aniamtion-wrap\" data-max-width=\"100%\" data-max-width-mobile=\"default\" data-shadow=\"none\" data-animation=\"none\" >\n      <div class=\"inner\">\n        <div class=\"hover-wrap\"> \n          <div class=\"hover-wrap-inner\">\n            <img loading=\"lazy\" decoding=\"async\" class=\"img-with-animation skip-lazy\" data-delay=\"0\" height=\"381\" width=\"288\" data-animation=\"none\" src=\"https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Therapeutische-Strategie.jpg\" alt=\"Schematische Grafik einer therapeutischen Strategie: Links wird der Fokus auf DNA (CRISPR-Cas9) dargestellt, rechts der Fokus auf mRNA (ADAR).\" srcset=\"https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Therapeutische-Strategie.jpg 288w, https:\/\/alpha1-deutschland.org\/wp-content\/uploads\/Therapeutische-Strategie-227x300.jpg 227w\" sizes=\"auto, (max-width: 288px) 100vw, 288px\" \/>\n          <\/div>\n        <\/div>\n        \n      <\/div>\n    <\/div>\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p><strong>Therapeutic strategy<\/strong><br \/>\nHow can we prevent damage caused by the Z variant? We repair the Z variant.<\/p>\n<\/div>\n\n\n\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\n\t\t<div id=\"fws_6a9021f05e272\"  data-column-margin=\"default\" data-midnight=\"dark\"  class=\"wpb_row vc_row-fluid vc_row\"  style=\"padding-top: 0px; padding-bottom: 0px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 dark left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p>Even though the two novel treatment methods described above cannot cure existing lung damage, their aim is to influence the liver in such a way that a sufficient amount of functional AATs is produced and at least the protective concentration of M-AAT is reached (the so-called protective threshold), as is the case, for example, in a typical PI*MZ carrier. This should protect the lungs from further damage and allow the liver to recover from deposits of polymerized Z-AATs. A prerequisite for this is that the drug reaches a sufficiently high proportion of liver cells, and the approaches of the various developers will differ in this respect.<\/p>\n<p>The third intervention option is siRNA, or small interfering RNA. These are short strands of RNA that are administered to the body, bind to the target mRNA, and disrupt it before it can produce its corresponding protein. This treatment thus prevents the formation of any AATs, allowing a liver damaged by clumped Z-AAT to recover. A corresponding drug is being developed by Takeda, building on preliminary work by Arrowhead.<\/p>\n<p>All these active ingredients have in common that they consist of very large molecules produced biotechnologically. These cannot simply be pressed into tablets or filled into capsules like chemically manufactured drugs. Oral administration would also be ineffective, as the active ingredients would be broken down in the digestive tract and would not reach their target, namely the liver cells. Instead, the active ingredients are packaged in complex &quot;vehicles&quot; designed so that, after administration under the skin (subcutaneously) or into the bloodstream (intravenously), they are absorbed directly by the liver cells and can exert their effects there.<\/p>\n<p>The speaker also offered a very vivid illustration of these rather complex relationships, which might make understanding easier: DNA can be thought of as a kind of cookbook containing the recipes for the structure and function of the body. RNA can then be understood as a copy of this cookbook. Both the original and the copy contain chapters for the production of proteins. mRNA is then a copy of a page containing the recipe for the production of a specific protein. In this analogy, a mutation is an error in the recipe book or its copy, and in the case of AAT, a single letter is incorrect in a precisely known location. When DNA is edited, the entire chapter containing the error is cut out of the recipe book and replaced with a new one, which, of course, should not contain any new errors. In the case of RNA editing, only a single letter is erased and rewritten on the copy of a page of the recipe book, but the copy as a whole fades rapidly. siRNA causes the copied page to fade before it can be read.<\/p>\n<p>Fortunately, a wealth of DNA- and RNA-based medications are currently in development or in various phases of clinical trials. This is where we, the people with AATD, come in, as clinical trials require participants. However, some programs do not recruit participants in Germany because substitution therapy is widespread here, and its use may preclude participation in some programs. Often, though, the inclusion criteria for these studies are broader, allowing programs to be conducted in Germany as well.<\/p>\n<\/div>\n\n\n\n<div class=\"divider-wrap\" data-alignment=\"center\"><div style=\"margin-top: 25px; width: 20%; height: 2px; margin-bottom: 25px;\" data-width=\"20%\" data-animate=\"\" data-animation-delay=\"\" data-color=\"accent-color\" class=\"divider-small-border\"><\/div><\/div>\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\n\t\t<div id=\"fws_6a9021f05f1fc\"  data-column-margin=\"default\" data-midnight=\"light\"  class=\"wpb_row vc_row-fluid vc_row has-row-bg-color  right_padding_30px left_padding_30px\"  style=\"padding-top: 30px; padding-bottom: 30px; --row-bg-color: #004267;\"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop using-bg-color\"  style=\"background-color: #004267; \"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 light left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<h2>Interested in participating in a drug trial?<\/h2>\n<p>&nbsp;<\/p>\n<p>If you are interested in participating in a drug trial, please visit our website under the heading &quot;Useful Information&quot; and go to the &quot;Research and Studies&quot; page, or click here.<\/p>\n<\/div>\n\n\n\n<a class=\"nectar-button large regular accent-color  regular-button\"  role=\"button\" style=\"margin-top: 50px; margin-bottom: 50px; \"  href=\"https:\/\/alpha1-deutschland.org\/en\/forschung-studien\/\" data-color-override=\"false\" data-hover-color-override=\"false\" data-hover-text-color-override=\"#fff\"><span>MORE INFORMATION<\/span><\/a>\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>\n\t\t<div id=\"fws_6a9021f06031f\"  data-column-margin=\"default\" data-midnight=\"light\"  class=\"wpb_row vc_row-fluid vc_row  right_padding_30px left_padding_30px\"  style=\"padding-top: 30px; padding-bottom: 30px; \"><div class=\"row-bg-wrap\" data-bg-animation=\"none\" data-bg-animation-delay=\"\" data-bg-overlay=\"false\"><div class=\"inner-wrap row-bg-layer\" ><div class=\"row-bg viewport-desktop\"  style=\"\"><\/div><\/div><\/div><div class=\"row_col_wrap_12 col span_12 light left\">\n\t<div  class=\"vc_col-sm-12 wpb_column column_container vc_column_container col no-extra-padding inherit_tablet inherit_phone flex_gap_desktop_10px\"  data-padding-pos=\"all\" data-has-bg-color=\"false\" data-bg-color=\"\" data-bg-opacity=\"1\" data-animation=\"\" data-delay=\"0\" >\n\t\t<div class=\"vc_column-inner\" >\n\t\t\t<div class=\"wpb_wrapper\">\n\t\t\t\t\n<div class=\"wpb_text_column wpb_content_element\" >\n\t<p>Images were provided courtesy of Marion Bouchekareilh.<\/p>\n<\/div>\n\n\n\n\n\t\t\t<\/div> \n\t\t<\/div>\n\t<\/div> \n<\/div><\/div>","protected":false},"excerpt":{"rendered":"AutorIn Heinz Stutzenberger, so erschienen im Alpha1-Journal 2\/2025. Der Alpha-1-Antitrypsin-Mangel, kurz AATM, des Genotyps Pi*Z ist auf dem besten Wege, eine Art Prototyp f\u00fcr neue gentechnische Behandlungsmethoden zu werden, die...","protected":false},"author":1,"featured_media":7082,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,24,40],"tags":[],"class_list":["post-7081","post","type-post","status-publish","format-standard","has-post-thumbnail","category-allgemein","category-alpha1-journal","category-forschung-und-studien"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alpha-1-Mangel: Neue DNA- und RNA-Therapien<\/title>\n<meta name=\"description\" content=\"Wie CRISPR, ADAR &amp; siRNA den Alpha-1-Antitrypsin-Mangel k\u00fcnftig behandeln k\u00f6nnten \u2013 Chancen, Risiken im \u00dcberblick.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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