{"id":31497,"date":"2025-04-15T15:27:46","date_gmt":"2025-04-15T15:27:46","guid":{"rendered":"https:\/\/amelie-project.eu\/?post_type=publication&#038;p=31497"},"modified":"2025-12-17T16:46:58","modified_gmt":"2025-12-17T16:46:58","slug":"ct-synlige-mikrosfaerer-muliggor-in-vivo-sporing-af-injicerbare-vaevstekniske-stilladser-i-hele-kroppen","status":"publish","type":"publication","link":"https:\/\/amelie-project.eu\/da\/udgivelse\/ct-synlige-mikrosfaerer-muliggor-in-vivo-sporing-af-injicerbare-vaevstekniske-stilladser-i-hele-kroppen\/","title":{"rendered":"CT-synlige mikrosf\u00e6rer muligg\u00f8r in vivo-sporing af hele kroppen af injicerbare v\u00e6vstekniske stilladser"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;section&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row admin_label=&#8221;row&#8221; _builder_version=&#8221;4.21.0&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; width=&#8221;100%&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text admin_label=&#8221;Text&#8221; _builder_version=&#8221;4.21.0&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; global_colors_info=&#8221;{}&#8221;]<!-- divi:paragraph --><\/p>\n<p><strong>Annalisa Bettini, Peter Stephen Patrick, Richard M. Day, Daniel J. Stuckey.<\/strong><\/p>\n<p>Advanced Healthcare Materials. 2024;13(17).<\/p>\n<p><em>Sammenfatning<\/em><\/p>\n<p>Denne unders\u00f8gelse udviklede sm\u00e5 svampelignende perler (kaldet mikrob\u00e6rere), der kan b\u00e6re terapeutiske celler og, vigtigst af alt, kan ses tydeligt p\u00e5 medicinske billeddannelsesscanninger. Forskerne tilsatte et harml\u00f8st kontrastmateriale, bariumsulfat, s\u00e5 perlerne kan ses p\u00e5 computertomografiscanninger (CT), efter at de er blevet spr\u00f8jtet ind i kroppen. Det g\u00f8r det muligt for l\u00e6gerne at spore, hvor det indopererede materiale befinder sig, hvor l\u00e6nge det bliver siddende, og om de transplanterede celler forbliver i live. I laboratoriefors\u00f8g og dyrefors\u00f8g var perlerne sikre, tillod celler at vokse p\u00e5 dem og forblev synlige p\u00e5 scanninger i mindst to uger. Mikrosf\u00e6rerne kunne ogs\u00e5 leveres gennem minimalt invasive indspr\u00f8jtninger, herunder i hjertet. Samlet set kan denne teknologi hj\u00e6lpe med at forbedre regenerative behandlinger ved at sikre, at implanterede celleb\u00e6rende stilladser n\u00e5r frem til det rigtige sted og bliver der - samtidig med at l\u00e6gerne f\u00e5r mulighed for at overv\u00e5ge behandlingen i realtid.<\/p>\n<p><em>Abstrakt<\/em><\/p>\n<p><span style=\"font-size: 18px;\">M\u00e5lrettet levering og fastholdelse er v\u00e6sentlige krav til implanterbare v\u00e6vstekniske produkter. Ikke-invasive billeddannelsesmetoder, der kan bekr\u00e6fte placering, fastholdelse og biodistribution af transplanterede celler, der er fastgjort til implanterede v\u00e6vstekniske stilladser, vil v\u00e6re uvurderlige for optimering og forbedring af regenerative terapier. For at im\u00f8dekomme dette behov er et injicerbart v\u00e6vsteknisk stillads best\u00e5ende af meget por\u00f8se mikrosf\u00e6rer, der er kompatible med celletransplantation, modificeret til at indeholde CT-kontrastmidlet bariumsulfat (BaSO4). De sporbare mikrosf\u00e6rer viser h\u00f8j r\u00f8ntgenabsorption, og kontrasten g\u00f8r det muligt at spore hele kroppen. Mikrosf\u00e6rerne er cellulariseret med GFP+ Luciferase+ mesenchymale stamceller og viser in vitro biokompatibilitet. In vivo leveres BaSO4-belastede mikrokugler i musens bagl\u00e5r, hvor de forbliver levedygtige i 14 dage. Samregistrering af 3D-bioluminescerende billeddannelse og \u00b5CT-rekonstruktioner muligg\u00f8r vurdering af stilladsmateriale og samlokalisering af celler. De sporbare mikrosf\u00e6rer er ogs\u00e5 kompatible med minimalt invasiv levering ved hj\u00e6lp af ultralydsvejledte transthorakale intramyokardiale injektioner i rotter. Disse resultater tyder p\u00e5, at BaSO4-belastede mikrosf\u00e6rer kan bruges som et nyt v\u00e6rkt\u00f8j til at optimere leveringsteknikker og spore vedholdenhed og fordeling af implanterede stilladsmaterialer. Derudover kan mikrosf\u00e6rerne cellulariseres og har potentiale til at blive udviklet til et injicerbart v\u00e6vsudviklet kombinationsprodukt til hjerteregenerering.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><!-- \/divi:paragraph --><\/p>\n<p>F\u00e5 adgang til hele artiklen her:<\/p>\n<p><a href=\"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/full\/10.1002\/adhm.202303588\">https:\/\/advanced.onlinelibrary.wiley.com\/doi\/full\/10.1002\/adhm.202303588<\/a>\u00a0<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><!-- \/divi:paragraph -->[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"<p>Annalisa Bettini, Peter Stephen Patrick, Richard M. Day, Daniel J. Stuckey. Advanced Healthcare Materials. 2024;13(17). Summary This study developed tiny sponge-like beads (called microcarriers) that can carry therapeutic cells and, importantly, can be seen clearly on medical imaging scans. The researchers added a harmless contrast material, barium sulphate, so the beads show up on computed tomography (CT) scans after they are injected into the body. This makes it possible for doctors to track where the implanted material goes, how long it stays in place, and whether the transplanted cells remain alive. In laboratory tests and in animal studies, the beads were safe, allowed cells to grow on them, and stayed visible on scans for at least two weeks. The microspheres could also be delivered through minimally invasive injections, including into the heart. Overall, this technology could help improve regenerative therapies by ensuring that implanted cell-carrying scaffolds reach the right location and stay there \u2013 while giving doctors a way to monitor the treatment in real time. Abstract Targeted delivery and retention are essential requirements for implantable tissue-engineered products. Non-invasive imaging methods that can confirm location, retention, and biodistribution of transplanted cells attached to implanted tissue engineering scaffolds will be invaluable [&hellip;]<\/p>","protected":false},"featured_media":31499,"template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"<!-- wp:paragraph -->\n<p>Charlotte Desprez, Davide Danovi, Charles H Knowles and Richard M Day.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>J. Tissue Eng. 2023;14:1\u201318.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>Abstract<\/em><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Skeletal muscle-derived cells (SMDC) hold tremendous potential for replenishing dysfunctional muscle lost due to disease or trauma. Current therapeutic usage of SMDC relies on harvesting autologous cells from muscle biopsies that are subsequently expanded in vitro before re-implantation into the patient. Heterogeneity can arise from multiple factors including quality of the starting biopsy, age and comorbidity affecting the processed SMDC. Quality attributes intended for clinical use often focus on minimum levels of myogenic cell marker expression. Such approaches do not evaluate the likelihood of SMDC to differentiate and form myofibres when implanted in vivo, which ultimately determines the likelihood of muscle regeneration. Predicting the therapeutic potency of SMDC in vitro prior to implantation is key to developing successful therapeutics in regenerative medicine and reducing implementation costs. Here, we report on the development of a novel SMDC profiling tool to examine populations of cells in vitro derived from different donors. We developed an image-based pipeline to quantify morphological features and extracted cell shape descriptors. We investigated whether these could predict heterogeneity in the formation of myotubes and correlate with the myogenic fusion index. Several of the early cell shape characteristics were found to negatively correlate with the fusion index. These included total area occupied by cells, area shape, bounding box area, compactness, equivalent diameter, minimum ferret diameter, minor axis length and perimeter of SMDC at 24 h after initiating culture. The information extracted with our approach indicates live cell imaging can detect a range of cell phenotypes based on cell-shape alone and preserving cell integrity could be used to predict propensity to form myotubes in vitro and functional tissue in vivo.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Access the full paper here:&nbsp;<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36949843\/\">https:\/\/pubmed.ncbi.nlm.nih.gov\/36949843\/<\/a><\/p>\n<!-- \/wp:paragraph -->","_et_gb_content_width":"","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_links_to":"","_links_to_target":""},"categories":[43],"class_list":["post-31497","publication","type-publication","status-publish","has-post-thumbnail","hentry","category-publication"],"_links":{"self":[{"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/publication\/31497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/types\/publication"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/media\/31499"}],"wp:attachment":[{"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/media?parent=31497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/amelie-project.eu\/da\/wp-json\/wp\/v2\/categories?post=31497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}