{"id":25946,"date":"2011-08-07T19:00:00","date_gmt":"2011-08-07T17:00:00","guid":{"rendered":"https:\/\/www.embl.org\/news\/?p=25946"},"modified":"2024-11-14T16:29:46","modified_gmt":"2024-11-14T15:29:46","slug":"live-from-the-scene-biochemistry-in-action","status":"publish","type":"post","link":"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/","title":{"rendered":"Live from the scene: biochemistry in action"},"content":{"rendered":"\n<p>Researchers can now watch molecules move in living cells, literally millisecond by millisecond, thanks to a new microscope developed by scientists at the <a href=\"https:\/\/www.embl.org\/sites\/heidelberg\/\">European Molecular Biology Laboratory (EMBL) in Heidelberg<\/a>, Germany. Published online today in <em>Nature Biotechnology<\/em>, the new technique provides insights into processes that were so far invisible.<\/p>\n\n\n\n<p>By combining light-sheet microscopy and single molecule spectroscopy, the new microscope can record the fluorescence of every pixel within view, and take snapshots at intervals of less than one millisecond. With it, scientists can watch and measure very fast processes, such as the way molecules diffuse, across a whole sample, even one containing several cells. This is a considerable step up from previous techniques, based on confocal microscopy, in which researchers could only observe at most a few isolated spots in a sample at a time.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"vf-figure  | vf-figure--align vf-figure--align-inline-start   size-medium\"><a href=\"http:\/\/medias01-web.embl.de\/Mediasite\/Play\/7a22d57fa6af4a7a92ccc2b5681cd6841d\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"214\" class=\"vf-figure__image\" src=\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/video-thumbnail-pr07aug11-300x214.jpg\" alt=\"\" class=\"wp-image-25966\" srcset=\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/video-thumbnail-pr07aug11-300x214.jpg 300w, https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/video-thumbnail-pr07aug11.jpg 700w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"vf-figure__caption\">A sample such as the yeast cells in this video is scanned layer by layer with a laser light sheet, and can then be reconstructed in 3D. The same was done with the developing wing of a fruit fly (end of video).<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u201cIt\u2019s really visual biochemistry,\u201d says Malte Wachsmuth, who developed the microscope at EMBL. \u201cWe can follow fluorescently-tagged molecules in whole live cells, in 3D, and see how their biochemical properties, like interaction rates and binding affinities, vary throughout the cell.\u201d<\/p>\n\n\n\n<p>Until now, chromatin \u2013 the combination of DNA, RNA and proteins that forms chromosomes \u2013 had been observed in two states: wound tightly together, with most of its DNA inaccessible to the cell\u2019s gene-reading machinery, in which case it is called heterochromatin; or loosely packed and easily readable, called euchromatin. But when they used the new microscope to measure the interaction between chromatin and a protein called HP1-\u03b1, the EMBL scientists made an intriguing discovery.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"vf-figure  | vf-figure--align vf-figure--align-inline-start   size-medium\"><a href=\"https:\/\/www.embl.org\/news\/?attachment_id=25972\"><img loading=\"lazy\" decoding=\"async\" width=\"289\" height=\"300\" class=\"vf-figure__image\" src=\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/laser-microscope2-289x300.jpg\" alt=\"\" class=\"wp-image-25972\" srcset=\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/laser-microscope2-289x300.jpg 289w, https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/laser-microscope2-768x797.jpg 768w, https:\/\/www.embl.org\/news\/wp-content\/uploads\/2020\/05\/laser-microscope2.jpg 800w\" sizes=\"auto, (max-width: 289px) 100vw, 289px\" \/><\/a><figcaption class=\"vf-figure__caption\">The new microscope.<br \/>Credit: EMBL\/H.Neves.<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u201cIn some areas that look like euchromatin, HP1-\u03b1 behaves as it would in the presence of heterochromatin,\u201d says Michael Knop, now at the University of Heidelberg, Germany. \u201cThis suggests that chromatin may also exist in an intermediate state between hetero- and euchromatin, which was not observable before in living cells.\u201d<\/p>\n\n\n\n<p>By providing a tool to watch molecules that move very fast, the scientists believe this new microscope will help to investigate processes ranging from the role of growth hormones in cancer to the regulation of cell division and signalling and the patterning of tissue development in the embryo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers can now watch molecules move in living cells, literally millisecond by millisecond, thanks to a new microscope developed by scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany. Published online today in Nature Biotechnology, the new technique provides&hellip;<\/p>\n","protected":false},"author":16,"featured_media":25964,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2,17591],"tags":[91,1988,301,667,859,79,1748],"embl_taxonomy":[5138],"class_list":["post-25946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","category-science-technology","tag-biotechnology","tag-confocal-microscopy","tag-hufnagel","tag-light-sheet-microscopy","tag-microscope","tag-microscopy","tag-press-release","embl_taxonomy-cell-biology-and-biophysics"],"acf":{"show_featured_image":false,"vf_locked":false,"featured":false,"article_intro":"<p>New microscope follows single molecules by the millisecond<\/p>\n","article_sources":[{"source_description":"<p>Capoulade, J., Wachsmuth, M., Hufnagel, L. &amp; Knop, M. Quantitative fluorescence imaging of protein diffusion and interaction in living cells. <em>Nature Biotechnology<\/em>, Advance Online Publication 7 August 2011. DOI: 10.1038\/nbt.1928.<\/p>\n","source_link_url":"https:\/\/www.nature.com\/articles\/nbt.1928"}],"related_links":false,"in_this_article":false,"color":"#007B53","link_color":"#fff","youtube_url":"","mp4_url":"","video_caption":"","press_contact":"EMBL Generic","field_target_display":"embl","source_article":false},"embl_taxonomy_terms":[{"uuid":"a:3:{i:0;s:36:\"302cfdf7-365b-462a-be65-82c7b783ebf7\";i:1;s:36:\"7ca3ce91-dc32-47ea-8d4b-7a53c3a3a9fd\";i:2;s:36:\"64999cc4-9a7c-4fea-8339-0e2acc990e08\";}","parents":[],"name":["Cell biology and biophysics"],"slug":"cell-biology-and-biophysics","description":"What &gt; Research Units &gt; Cell biology and biophysics"}],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Live from the scene: biochemistry in action | EMBL<\/title>\n<meta name=\"description\" content=\"Researchers can now watch molecules move in living cells, literally millisecond by millisecond, thanks to a new microscope developed at EMBL.\" \/>\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.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Live from the scene: biochemistry in action | EMBL\" \/>\n<meta property=\"og:description\" content=\"Researchers can now watch molecules move in living cells, literally millisecond by millisecond, thanks to a new microscope developed at EMBL.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/\" \/>\n<meta property=\"og:site_name\" content=\"EMBL\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/embl.org\/\" \/>\n<meta property=\"article:published_time\" content=\"2011-08-07T17:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-14T15:29:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2011\/08\/laser-microscope1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Guest author(s)\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@embl\" \/>\n<meta name=\"twitter:site\" content=\"@embl\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Guest author(s)\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/\"},\"author\":{\"name\":\"Guest author(s)\",\"@id\":\"https:\/\/www.embl.org\/news\/#\/schema\/person\/b4d9366b2ebe691c4015c64c3619205b\"},\"headline\":\"Live from the scene: biochemistry in action\",\"datePublished\":\"2011-08-07T17:00:00+00:00\",\"dateModified\":\"2024-11-14T15:29:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/\"},\"wordCount\":406,\"publisher\":{\"@id\":\"https:\/\/www.embl.org\/news\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.embl.org\/news\/science\/live-from-the-scene-biochemistry-in-action\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.embl.org\/news\/wp-content\/uploads\/2011\/08\/laser-microscope1.jpg\",\"keywords\":[\"biotechnology\",\"confocal microscopy\",\"hufnagel\",\"light-sheet microscopy\",\"microscope\",\"microscopy\",\"press release\"],\"articleSection\":[\"Science\",\"Science &amp; 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