{"id":1791,"date":"2023-04-04T13:57:16","date_gmt":"2023-04-04T13:57:16","guid":{"rendered":"http:\/\/www.unilim.fr\/labex_sigmalim\/?p=1791"},"modified":"2023-06-14T08:14:40","modified_gmt":"2023-06-14T08:14:40","slug":"publication-une-nouvelle-methodologie-pour-limagerie-cellulaire-hyperspectrale-et-la-segmentation-utilisant-la-microspectroscopie-raman-anti-stokes-coherente-multiplex-mcars","status":"publish","type":"post","link":"https:\/\/www.unilim.fr\/labex_sigmalim\/2023\/04\/04\/publication-une-nouvelle-methodologie-pour-limagerie-cellulaire-hyperspectrale-et-la-segmentation-utilisant-la-microspectroscopie-raman-anti-stokes-coherente-multiplex-mcars\/","title":{"rendered":"[Publication] Une nouvelle m\u00e9thodologie pour l&rsquo;imagerie cellulaire hyperspectrale et la segmentation utilisant la microspectroscopie Raman anti-Stokes coh\u00e9rente multiplex (MCARS)"},"content":{"rendered":"<p>Au cours des deux derni\u00e8res d\u00e9cennies, l&rsquo;imagerie Raman coh\u00e9rente a \u00e9t\u00e9 largement appliqu\u00e9e \u00e0 l&rsquo;imagerie des cellules vivantes. Cela permet de sonder le contenu intracellulaire en lipides, en prot\u00e9ines, en acides nucl\u00e9iques et en eau avec un taux d&rsquo;acquisition et une sensibilit\u00e9 \u00e9lev\u00e9s. La microspectroscopie Raman anti-Stokes coh\u00e9rente multiplex (MCARS) est aujourd\u2019hui reconnue comme une technologie mature pour la bio-imagerie, combinant la haute r\u00e9solution spectrale de la spectroscopie Raman conventionnelle et un temps d&rsquo;acquisition r\u00e9duit.<\/p>\n<p>Dans le cadre du d\u00e9fi \u00ab\u00a0Biomat\u00e9riaux, biophotonique et imagerie pour le diagnostic\u00a0\u00bb du flagship \u00ab\u00a0Am\u00e9liorer la sant\u00e9 gr\u00e2ce \u00e0 des diagnostics et th\u00e9rapies avanc\u00e9s\u00a0\u00bb du LABEX \u2211-LIM et \u00e0 travers les travaux de th\u00e8se de Damien Boildieu, une \u00e9quipe de chercheurs a mis au point une nouvelle m\u00e9thodologie pour l&rsquo;imagerie cellulaire hyperspectrale et la segmentation utilisant la microspectroscopie MCARS, d\u00e9crite dans une publication intitul\u00e9e \u00ab\u00a0Coherent anti-Stokes Raman scattering cell imaging and segmentation with unsupervised data analysis \u00bb dans la revue Frontiers in Cell and Developmental Biology.<\/p>\n<p>Le terme \u00ab\u00a0hyperspectral\u00a0\u00bb signifie que les jeux de donn\u00e9es collect\u00e9s contiennent un grand nombre de canaux spectraux (un millier, typiquement), contrairement \u00e0 d\u2019autres approches d\u2019imagerie qui privil\u00e9gient la vitesse \u00e0 la qualit\u00e9 spectrale.<\/p>\n<p>Cette nouvelle m\u00e9thode associe la technique d&rsquo;imagerie MCARS avec une analyse de donn\u00e9es non supervis\u00e9e bas\u00e9e sur la <em>r\u00e9solution multivari\u00e9e<\/em> de <em>courbes<\/em> (MCR). Le proc\u00e9d\u00e9 MCR est mis en \u0153uvre sous la contrainte classique de non-n\u00e9gativit\u00e9 du signal et, de mani\u00e8re plus originale, sous une nouvelle contrainte spatiale bas\u00e9e sur la segmentation cellulaire. L\u2019approche permet un gain de temps, une meilleure analyse du contenu intra\/extra-cellulaire et une r\u00e9duction des co\u00fbts de pr\u00e9paration des \u00e9chantillons.<\/p>\n<p>Ces travaux ont \u00e9t\u00e9 men\u00e9s en collaboration avec le LASIRE &#8211; Laboratoire de Spectroscopie Pour Les Interactions, La R\u00e9activit\u00e9 et L\u2019Environnement et le D\u00e9partement de Chimie de la Facult\u00e9 des Sciences de l\u2019Universit\u00e9 de Kyushu, Fukuoka (Japon) et se poursuivent \u00e0 travers un Projet R\u00e9gion Nouvelle-Aquitaine intitul\u00e9 BELENOS pour lequel cette nouvelle m\u00e9thode sera utilis\u00e9e pour caract\u00e9riser un nouveau mat\u00e9riau bioc\u00e9ramique. Un autre projet est d\u00e9pos\u00e9 sur le d\u00e9veloppement d\u2019algorithmes d\u2019intelligence artificielle pour le traitement des donn\u00e9es MCARS hyperspectrales.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1796\" src=\"https:\/\/www.unilim.fr\/labex_sigmalim\/wp-content\/uploads\/sites\/8\/2023\/04\/Figure_Publication_LABEX_MCARS-1.png\" alt=\"\" width=\"752\" height=\"251\" \/><\/p>\n<p>Cr\u00e9dit photo : Philippe Leproux, Amandine Magnaudeix<\/p>\n<p>&nbsp;<\/p>\n<p><strong><u>Informations relatives \u00e0 la publication<\/u><\/strong><\/p>\n<p>Coherent anti-Stokes Raman scattering cell imaging and segmentation with unsupervised data analysis<\/p>\n<p>by Damien Boildieu, Tiffany Guerenne, Ludovic Duponchel,Vincent Sol, Jean-Michel Petit, \u00c9ric Champion, Hideaki Kano, David Helbert, Amandine Magnaudeix, Philippe Leproux and Philippe Carr\u00e9<\/p>\n<p><em>Frontiers in Cell Dev. Biol.<\/em>, Sec. Cellular Biochemistry<em><br \/>\n<\/em>Volume 10 &#8211; 2022 | <a href=\"https:\/\/doi.org\/10.3389\/fcell.2022.933897\">https:\/\/doi.org\/10.3389\/fcell.2022.933897<\/a><\/p>\n<p>Received: 01 May 2022; Accepted: 11 July 2022; Published: 16 August 2022.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Au cours des deux derni\u00e8res d\u00e9cennies, l&rsquo;imagerie Raman coh\u00e9rente a \u00e9t\u00e9 largement appliqu\u00e9e \u00e0 l&rsquo;imagerie des cellules vivantes. Cela permet de sonder le contenu intracellulaire en lipides, en prot\u00e9ines, en acides nucl\u00e9iques et en eau avec un taux d&rsquo;acquisition et une sensibilit\u00e9 \u00e9lev\u00e9s. La microspectroscopie Raman anti-Stokes coh\u00e9rente multiplex (MCARS) est aujourd\u2019hui reconnue comme une [&hellip;]<\/p>\n","protected":false},"author":194,"featured_media":1803,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recherche"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Publication] Une nouvelle m\u00e9thodologie pour l&#039;imagerie cellulaire hyperspectrale et la segmentation utilisant la microspectroscopie Raman anti-Stokes coh\u00e9rente multiplex (MCARS) - Laboratoire d&#039;Excellence \u2211-LIM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.unilim.fr\/labex_sigmalim\/2023\/04\/04\/publication-une-nouvelle-methodologie-pour-limagerie-cellulaire-hyperspectrale-et-la-segmentation-utilisant-la-microspectroscopie-raman-anti-stokes-coherente-multiplex-mcars\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Publication] Une nouvelle m\u00e9thodologie pour l&#039;imagerie cellulaire hyperspectrale et la segmentation utilisant la microspectroscopie Raman anti-Stokes coh\u00e9rente multiplex (MCARS) - Laboratoire d&#039;Excellence \u2211-LIM\" \/>\n<meta property=\"og:description\" content=\"Au cours des deux derni\u00e8res d\u00e9cennies, l&rsquo;imagerie Raman coh\u00e9rente a \u00e9t\u00e9 largement appliqu\u00e9e \u00e0 l&rsquo;imagerie des cellules vivantes. 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