{"id":12806,"date":"2023-07-17T11:53:04","date_gmt":"2023-07-17T09:53:04","guid":{"rendered":"https:\/\/www.toulouse-biotechnology-institute.fr\/?p=12806"},"modified":"2023-07-17T11:54:47","modified_gmt":"2023-07-17T09:54:47","slug":"du-dechet-toxique-a-un-nutriment-benefique-nouveau-regard-sur-lacetate","status":"publish","type":"post","link":"https:\/\/www.toulouse-biotechnology-institute.fr\/en\/du-dechet-toxique-a-un-nutriment-benefique-nouveau-regard-sur-lacetate\/","title":{"rendered":"From toxic waste to beneficial nutrient, a new look at acetate"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"12806\" class=\"elementor elementor-12806\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2799a7f3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2799a7f3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3f288372\" data-id=\"3f288372\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5a78171f elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5a78171f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<p><strong>Microorganisms such as bacteria use preferentially sugars to grow. In this process, they produce waste products such as acetate that inhibits their growth. Acetate has long been considered toxic to bacteria until teams from the Toulouse biotechnology institute laboratory (TBI - INRAE \/ INSA Toulouse \/ CNRS) demonstrated that, far too be toxic, acetate is in fact a beneficial nutrient under conditions frequently met by E. coli in its natural and industrial environments.<\/strong><\/p>\n<p><strong><\/strong><\/p>\n<p><strong><\/strong><\/p>\n<p><strong>Published on July 13, 2023 on <a href=\"https:\/\/www.inrae.fr\/actualites\/du-dechet-toxique-nutriment-benefique-nouveau-regard-lacetate\" target=\"_blank\" rel=\"noreferrer noopener\">INRAE website<\/a><\/strong><\/p>\n<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d59de4a elementor-widget elementor-widget-spacer\" data-id=\"d59de4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7812275 elementor-widget elementor-widget-text-editor\" data-id=\"7812275\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<h3>Acetate, first and foremost a \"toxic waste\" ...<\/h3>\n<p><\/p>\n<p><\/p>\n<p>Glycolysis is a set of biochemical reactions that take place inside the cells to convert sugars into energy and building blocks for cellular growth. Glycolysis is found in all living organisms, whether they are multicellular (like us humans) or unicellular, like bacteria.<\/p>\n<p><\/p>\n<p><\/p>\n<p>When bacteria have large amounts of sugars at their disposal, they use them rapidly to ensure the fastest possible growth. In such conditions, glycolysis leads to the secretion of fermentation products like acetate (which gives its characteristic smell to vinegar for example). Acetate production is notably observed in the bacterium Escherichia coli (naturally present in our digestive tracts) and annoyingly produced in the many biotechnology processes exploiting this bacteria for the industrial production a broad range of molecules of interest (drugs, bioplastics, etc.).<\/p>\n<p><\/p>\n<p><\/p>\n<p>Indeed, scientists have observed that acetate was toxic to bacteria, in particular inhibiting their growth. Despite decades of research on this topic, the causes of acetate production remain poorly understood, especially why the bacterium produces a molecule that is eventually harmful to itself.<\/p>\n<p><\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\" id=\"anchor1_2\">... Which turns out to be a beneficial nutrient for bacteria<\/h2>\n<p><\/p>\n<p><\/p>\n<p>Despite its known negative impact on Escherichia coli growth, a new study published in The EMBO Journal has shown that acetate is much more than just a waste product. Indeed, acetate can also be a beneficial nutrient for bacterial growth in some conditions.<\/p>\n<p><\/p>\n<p><\/p>\n<p>This is particularly true when the utilization of sugars by glycolysis is less efficient, for example because sugars are less accessible in the environment. Escherichia coli then compensates for this reduction in sugars utilization by simultaneously using acetate to produce energy and boost its growth. So, far from being toxic, acetate is actually beneficial to Escherichia coli growth. The two teams have also shown that the same genes are involved in acetate production and consumption and are thus responsible for its dual role as a toxic waste product or beneficial nutrient.<\/p>\n<p><\/p>\n<p><\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.static.inrae.fr\/cdn\/ff\/RFBnhOLOmMdi6PydB41Y18PLsb8JlAPl7D4q74ZRqRU\/1689232546\/public\/styles\/large\/public\/png\/TBI-acetate-1.png?itok=4NOh3azV\" alt=\"\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\" id=\"anchor1_3\">A sustainable resource for environmentally friendly biotechnology<\/h2>\n<p><\/p>\n<p><\/p>\n<p>This work sheds new light on the mysteries of producing molecules previously considered as \"toxic wastes\" for the cells. It also paves the way for better exploitation of acetate as a sustainable resource for biotechnology. Acetate is present in various plant-derived nutrients and can be obtained from CO2. A better use of acetate by E. coli could therefore improve the sustainable bioproduction of many molecules of interest, such as biodegradable plastics, while reducing the environmental footprint of biotechnology.<\/p>\n<p><\/p>\n<p><\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.static.inrae.fr\/cdn\/ff\/kdK5THS3gRLmVBFTE67zFoZBLIGJcr0RFwFWvKGG44E\/1689232726\/public\/styles\/large\/public\/png\/TBI-acetate-2.png?itok=rri3Mbim\" alt=\"\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<p>References :<\/p>\n<p><\/p>\n<p><\/p>\n<p>Millard P. et al. (2023). Acetate is a beneficial nutrient for\u00a0E. coli\u00a0at low glycolytic flux. The EMBO Journal. e113079.\u00a0<a href=\"https:\/\/www.embopress.org\/doi\/full\/10.15252\/embj.2022113079\">https:\/\/www.embopress.org\/doi\/full\/10.15252\/embj.2022113079<\/a><\/p>\n<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Pour se d\u00e9velopper, les microorganismes, tels que les bact\u00e9ries, consomment pr\u00e9f\u00e9rentiellement les sucres. Au cours de ce processus, ils produisent des d\u00e9chets qui inhibent leur croissance. Parmi eux se trouve l\u2019ac\u00e9tate, longtemps consid\u00e9r\u00e9 comme toxique pour les bact\u00e9ries, jusqu\u2019\u00e0 ce que des \u00e9quipes du laboratoire Toulouse biotechnology institute (TBI \u2013 INRAE \/ INSA Toulouse \/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12807,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[38],"class_list":["post-12806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resultat-scientifique","tag-equipe-metasys"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Du d\u00e9chet toxique \u00e0 un nutriment b\u00e9n\u00e9fique, nouveau regard sur l\u2019ac\u00e9tate | TBI, Toulouse Biotechnology Institute<\/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.toulouse-biotechnology-institute.fr\/en\/du-dechet-toxique-a-un-nutriment-benefique-nouveau-regard-sur-lacetate\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Du d\u00e9chet toxique \u00e0 un nutriment b\u00e9n\u00e9fique, nouveau regard sur l\u2019ac\u00e9tate | TBI, Toulouse Biotechnology Institute\" \/>\n<meta property=\"og:description\" content=\"Pour se d\u00e9velopper, les microorganismes, tels que les bact\u00e9ries, consomment pr\u00e9f\u00e9rentiellement les sucres. 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Parmi eux se trouve l\u2019ac\u00e9tate, longtemps consid\u00e9r\u00e9 comme toxique pour les bact\u00e9ries, jusqu\u2019\u00e0 ce que des \u00e9quipes du laboratoire Toulouse biotechnology institute (TBI \u2013 INRAE \/ INSA Toulouse \/ [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.toulouse-biotechnology-institute.fr\/en\/du-dechet-toxique-a-un-nutriment-benefique-nouveau-regard-sur-lacetate\/\" \/>\n<meta property=\"og:site_name\" content=\"TBI, Toulouse Biotechnology Institute\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/TBI-Toulouse-Biotechnology-Institute-Bio-Chemical-Engineering-360428497952306\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-17T09:53:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-17T09:54:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.toulouse-biotechnology-institute.fr\/wp-content\/uploads\/2023\/07\/Design-sans-titre-1.png\" 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