{"id":4875,"date":"2026-05-27T14:05:50","date_gmt":"2026-05-27T14:05:50","guid":{"rendered":"https:\/\/campusbiotech.ch\/?p=4875"},"modified":"2026-05-27T15:48:11","modified_gmt":"2026-05-27T15:48:11","slug":"neurogi-une-nouvelle-facon-dexplorer-laxe-intestin-cerveau","status":"publish","type":"post","link":"https:\/\/campusbiotech.ch\/fr\/neurogi-une-nouvelle-facon-dexplorer-laxe-intestin-cerveau\/","title":{"rendered":"NeuroGI : une nouvelle fa\u00e7on d\u2019explorer l\u2019axe intestin\u2013cerveau"},"content":{"rendered":"<div id=\"attachment_4782\" style=\"width: 1810px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4782\" class=\"wp-image-4782 size-full\" src=\"https:\/\/campusbiotech.ch\/wp-content\/uploads\/2026\/05\/img_campus_news_gut\u2013brain_axis.jpg\" alt=\"\" width=\"1800\" height=\"1116\" \/><p id=\"caption-attachment-4782\" class=\"wp-caption-text\">\u00a9 Wyss Geneva \/ Dinis Sottomayor<\/p><\/div>\n<h6>Malgr\u00e9 des d\u00e9cennies de recherche, le syst\u00e8me nerveux ent\u00e9rique reste difficile \u00e0 comprendre \u2013 \u00e0 cause de sa complexit\u00e9. En combinant enregistrements fonctionnels in vivo et imagerie 3D \u00e0 l\u2019\u00e9chelle de l\u2019organe, les technologies d\u00e9velopp\u00e9es par l\u2019\u00e9quipe NeuroGI du Wyss Center for Bio and Neuroengineering, bas\u00e9e au Campus Biotech \u00e0 Gen\u00e8ve, ouvrent une nouvelle voie pour explorer l\u2019axe intestin\u2013cerveau.<\/p>\n<p>Elles s\u2019appuient sur deux publications r\u00e9centes, qui d\u00e9taillent ces approches exp\u00e9rimentales et leurs applications<sup>1<\/sup>.<\/h6>\n<p><strong>Un d\u00e9fi scientifique encore largement ouvert<\/strong><\/p>\n<p>Souvent qualifi\u00e9 de \u00ab deuxi\u00e8me cerveau \u00bb, le syst\u00e8me nerveux ent\u00e9rique (SNE) joue un r\u00f4le central dans la r\u00e9gulation des fonctions digestives, mais aussi dans de nombreuses pathologies. Pourtant, son \u00e9tude reste souvent fragment\u00e9e et restreinte \u00e0 des mesures indirectes et impr\u00e9cises de l\u2019activit\u00e9 du tube digestif.<\/p>\n<p>L\u2019imagerie structurelle offre une vision d\u00e9taill\u00e9e des tissus, mais un manque d\u2019outils de mesure de l\u2019activit\u00e9 physiologique ne permet pas de relier ces observations morphologiques \u00e0 la fonction de l\u2019organe. N\u00e9anmoins, les mesures fonctionnelles existantes qui permettent d\u2019observer l\u2019activit\u00e9 \u00e9lectrique du tube digestif sont invasives et trop localis\u00e9es.<\/p>\n<p>Entre ces deux \u00e9l\u00e9ments \u2013 \u00e0 savoir morphologie cellulaire et physiologie de l\u2019organe \u2013 un foss\u00e9 persiste.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Capturer l\u2019activit\u00e9 intestinale in vivo<\/strong><\/p>\n<p>Pour y r\u00e9pondre, l\u2019\u00e9quipe NeuroGI a d\u00e9velopp\u00e9 un endoscope miniaturis\u00e9 capable d\u2019enregistrer, avec une haute r\u00e9solution, l\u2019activit\u00e9 \u00e9lectrique directement dans le c\u00f4lon de souris vivantes, sans recourir \u00e0 une intervention chirurgicale.<\/p>\n<p>\u00c9quip\u00e9 de 128 capteurs, cet outil permet d\u2019observer l\u2019organisation des potentiels d\u2019action en motifs spatio-temporels complexes le long du tube digestif. Il rend possible l\u2019analyse des variations de ces patterns en r\u00e9ponse \u00e0 des agents pharmacologiques modulant la neurotransmission ent\u00e9rique.<\/p>\n<p>L\u2019int\u00e9r\u00eat est double : acc\u00e9der \u00e0 une activit\u00e9 physiologique en conditions proches du r\u00e9el et relier directement intervention exp\u00e9rimentale et r\u00e9ponse du syst\u00e8me.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Visualiser le syst\u00e8me nerveux ent\u00e9rique \u00e0 grande \u00e9chelle<\/strong><\/p>\n<p>En parall\u00e8le, la m\u00e9thode enGLOW permet de visualiser le syst\u00e8me nerveux ent\u00e9rique en 3D dans des tissus intestinaux humains et murins, sur des volumes allant jusqu\u2019aux centim\u00e8tres cube.<\/p>\n<p>En combinant clarification tissulaire, marquage et segmentation, cette approche offre une analyse quantitative de larges segments de tissu et conserve une haute r\u00e9solution. Elle permet notamment de cartographier les r\u00e9seaux neuronaux et de comparer diff\u00e9rents mod\u00e8les, sains ou pathologiques.<\/p>\n<p>En rendant mesurable la morphologie du SNE \u00e0 cette \u00e9chelle, enGLOW comble un manque entre imagerie microscopique et compr\u00e9hension globale de l\u2019organe.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Relier structure et fonction<\/strong><\/p>\n<p>Pris s\u00e9par\u00e9ment, ces deux outils r\u00e9pondent \u00e0 des limites bien identifi\u00e9es. Ensemble, ils changent la mani\u00e8re d\u2019aborder l\u2019axe intestin\u2013cerveau.<\/p>\n<p>L\u2019endoscope donne acc\u00e8s \u00e0 des dynamiques fonctionnelles in vivo ; enGLOW fournit une lecture structurelle \u00e0 grande \u00e9chelle. Leur compl\u00e9mentarit\u00e9 ouvre la voie \u00e0 une approche int\u00e9gr\u00e9e, capable de relier organisation du tissu et activit\u00e9 \u00e9lectrique \u2013 une \u00e9tape cl\u00e9 pour mieux comprendre les m\u00e9canismes des maladies gastro-intestinales et neurod\u00e9g\u00e9n\u00e9ratives.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Deux questions \u00e0 Michalina Gora, Group Leader de NeuroGI<\/strong><\/p>\n<blockquote><p><strong>Quelle a \u00e9t\u00e9, jusqu\u2019\u00e0 pr\u00e9sent, la principale limite pour relier structure et fonction dans l\u2019\u00e9tude du syst\u00e8me nerveux ent\u00e9rique ?<\/strong><\/p>\n<p>L&rsquo;\u00e9lectrophysiologie a jou\u00e9 un r\u00f4le d\u00e9terminant dans l&rsquo;approfondissement de notre compr\u00e9hension du fonctionnement du cerveau et du c\u0153ur et constitue aujourd&rsquo;hui un outil standard dans le diagnostic clinique. Cependant, des outils comparables n&rsquo;ont pas pu \u00eatre transpos\u00e9s avec succ\u00e8s au syst\u00e8me digestif, en raison d&rsquo;une combinaison de d\u00e9fis techniques et physiologiques. La r\u00e9alisation de mesures fonctionnelles longitudinales et peu invasives a n\u00e9cessit\u00e9 l&rsquo;int\u00e9gration des neurotechnologies avec la gastroent\u00e9rologie, les neurosciences, la micro-ing\u00e9nierie et la neurobiologie. La prise en compte du contexte morphologique a en outre impos\u00e9 l&rsquo;adoption d&rsquo;outils de photonique avanc\u00e9e. En r\u00e9unissant ces domaines d&rsquo;expertise compl\u00e9mentaires au sein d&rsquo;une m\u00eame \u00e9quipe \u2013 soutenue par le Wyss Center et une bourse ERC Starting Grant \u2013 nous avons d\u00e9velopp\u00e9 une approche quantitative et directe pour mesurer la fonction et la morphologie intestinales dans le contexte du corps entier.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>En pratique, qu\u2019est-ce que cette approche combin\u00e9e change dans la compr\u00e9hension ou l\u2019\u00e9tude des maladies gastro-intestinales ?<\/strong><\/p>\n<p>Jusqu&rsquo;\u00e0 pr\u00e9sent, la recherche sur l&rsquo;axe intestin-cerveau manquait de m\u00e9thodes peu invasives capables de capturer l&rsquo;activit\u00e9 fonctionnelle avec \u00e0 la fois une haute r\u00e9solution spatiale et une couverture \u00e9tendue. Notre plateforme mini-endoscopique comble ce manque en permettant des mesures longitudinales de la fonction physiologique au cours de la progression des maladies. Sa conception peu invasive la rend adapt\u00e9e \u00e0 des mesures r\u00e9p\u00e9t\u00e9es dans le temps. Nous sommes particuli\u00e8rement enthousiastes \u00e0 l&rsquo;id\u00e9e de collaborer avec des partenaires de recherche de premier plan travaillant au d\u00e9veloppement de traitements pour des maladies neurod\u00e9g\u00e9n\u00e9ratives telles qu&rsquo;Alzheimer et Parkinson, pour lesquelles une perspective globale int\u00e9grant l&rsquo;axe intestin-cerveau est de plus en plus reconnue comme essentielle.<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p>Ce projet a re\u00e7u un financement du Conseil europ\u00e9en de la recherche (ERC) dans le cadre du programme de recherche et d\u2019innovation Horizon 2020 de l\u2019Union europ\u00e9enne (convention de subvention n\u00b0 853378).<\/p>\n<p><span style=\"font-size: 12px;\"><sup>1<\/sup>Sobolewski, A., Planchette, A., W\u00f3jcicki, K. et al. Miniature endoscope for high resolution electrophysiological recordings from the colon of live mice. Nat Commun 17, 2363 (2026). https:\/\/doi.org\/10.1038\/s41467-026-69144-2<br \/>\nPlanchette, A., Gantar, I., Scholler, J. et al. enGLOW 3D microscopy of the enteric nervous system in cleared human and mouse gut. Commun Biol 9, 357 (2026). https:\/\/doi.org\/10.1038\/s42003-026-09643-6<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Malgr\u00e9 des d\u00e9cennies de recherche, le syst\u00e8me nerveux ent\u00e9rique reste difficile \u00e0 comprendre \u2013 \u00e0 cause de sa complexit\u00e9. En combinant enregistrements fonctionnels in vivo et imagerie 3D \u00e0 l\u2019\u00e9chelle de l\u2019organe, les technologies d\u00e9velopp\u00e9es par l\u2019\u00e9quipe NeuroGI du Wyss Center for Bio and Neuroengineering, bas\u00e9e au Campus Biotech \u00e0 Gen\u00e8ve, ouvrent une nouvelle voie [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4877,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[66],"tags":[],"class_list":["post-4875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NeuroGI : une nouvelle fa\u00e7on d\u2019explorer l\u2019axe intestin\u2013cerveau - Campus Biotech<\/title>\n<meta name=\"description\" content=\"\u00c0 la crois\u00e9e des neurosciences, de l\u2019ing\u00e9nierie et du m\u00e9dical, ABILITY Neurotech d\u00e9veloppe une nouvelle g\u00e9n\u00e9ration d\u2019interfaces cerveau-machine implantables.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/campusbiotech.ch\/fr\/neurogi-une-nouvelle-facon-dexplorer-laxe-intestin-cerveau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NeuroGI : une nouvelle fa\u00e7on d\u2019explorer l\u2019axe intestin\u2013cerveau - 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