{"id":632707,"date":"2024-08-30T07:20:01","date_gmt":"2024-08-30T04:20:01","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/promising-antibiotic-candidates-discovered-in-microbes-deep-in-the-arctic-sea\/"},"modified":"2024-08-30T07:20:01","modified_gmt":"2024-08-30T04:20:01","slug":"promising-antibiotic-candidates-discovered-in-microbes-deep-in-the-arctic-sea","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/promising-antibiotic-candidates-discovered-in-microbes-deep-in-the-arctic-sea\/","title":{"rendered":"#Promising antibiotic candidates discovered in microbes deep in the Arctic Sea"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3f7b56999f9\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3f7b56999f9\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/promising-antibiotic-candidates-discovered-in-microbes-deep-in-the-arctic-sea\/#Automated_screening_of_candidate_compounds\" >Automated screening of candidate compounds<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/promising-antibiotic-candidates-discovered-in-microbes-deep-in-the-arctic-sea\/#Powerful_antivirulence_effects\" >Powerful antivirulence effects<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/promising-antibiotic-c.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c.jpg\" data-sub-html=\"The Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon in August 2020. Credit: Teppo R\u00e4m\u00e4\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2024\/promising-antibiotic-c.jpg\" alt=\"Promising antibiotic candidates discovered in microbes deep in the Arctic Sea\" title=\"The Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon in August 2020. Credit: Teppo R\u00e4m\u00e4\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                The Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon in August 2020. Credit: Teppo R\u00e4m\u00e4<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Antibiotics are the linchpin of modern medicine: without them, anyone with open wounds or needing to undergo surgery would be at constant risk of dangerous infections. Yet we continue to face a global antibiotics crisis, as more and more resistant strains of bacteria are evolving, while the rate of discovery of fundamentally new antibiotics has been much slower.<\/p>\n<p>                                                                                                                                    But there is reason for hope: 70% of all currently licensed antibiotics have been derived from actinobacteria in the soil, and most environments on Earth have not yet been prospected for them.<\/p>\n<p>Thus, focusing the search on actinobacteria in other habitats is a promising strategy\u2014especially if this were to yield novel molecules that neither kill bacteria outright nor stop them from growing, but only reduce their &#8220;virulence&#8221; or capacity for causing disease. This is because it is hard for targeted pathogenic strains to evolve resistance under these conditions, while such antivirulence compounds are also less likely to cause unwanted side-effects.<\/p>\n<p>&#8220;Here we show how advanced screening assays can identify antivirulence and antibacterial metabolites from actinobacteria extracts,&#8221; said Dr. P\u00e4ivi Tammela, a professor at the University of Helsinki, Finland, and the corresponding author of a new <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.frontiersin.org\/journals\/microbiology\/articles\/10.3389\/fmicb.2024.1432475\/full\">study<\/a> in <i>Frontiers in Microbiology<\/i>.<\/p>\n<p>&#8220;We discovered a compound that inhibits enteropathogenic E. coli (EPEC) virulence without affecting its growth, and a growth-inhibiting compound, both in actinobacteria from the Arctic Ocean.&#8221;<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/promising-antibiotic-c-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c-1.jpg\" data-sub-html=\"Research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2024\/promising-antibiotic-c-1.jpg\" alt=\"Promising antibiotic candidates discovered in microbes deep in the Arctic Sea\" title=\"Research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                Research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Automated_screening_of_candidate_compounds\"><\/span>Automated screening of candidate compounds<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Tammela and colleagues developed a new suite of methods that can test for the antivirulence and antibacterial effect of hundreds of unknown compounds simultaneously. They targeted an EPEC strain that causes severe\u2014and sometimes deadly\u2014diarrhea in children under five, especially in developing countries.<\/p>\n<p>EPEC causes disease by adhering to cells in the human gut. Once it adheres to these cells, EPEC injects so-called &#8220;virulence factors&#8221; into the host cell to hijack its molecular machinery, ultimately killing it.<\/p>\n<p>The tested compounds were derived from four species of actinobacteria, isolated from invertebrates sampled in the Arctic Sea off Svalbard during an expedition of the Norwegian research vessel &#8220;Kronprins Haakon&#8221; in August 2020. These bacteria were then cultured, their cells extracted, and their contents separated into fractions. Each fraction was then tested in vitro, against EPEC adhering to cultured colorectal cancer cells.<\/p>\n<p>The researchers found two unknown compounds with strong antivirulence or antibacterial activity: one from an unknown strain (called T091-5) in the genus Rhodococcus, and another from an unknown strain (T160-2) of Kocuria.<\/p>\n<ul class=\"article-gallery js-article-gallery\">\n<li data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/promising-antibiotic-c-2.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c-2.jpg\" data-sub-html=\"Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider\">\n<figure class=\"article-img text-center\">\n                <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800\/2024\/promising-antibiotic-c-2.jpg\" alt=\"Promising antibiotic candidates discovered in microbes deep in the Arctic Sea\"\/><figcaption class=\"text-left text-darken text-low-up text-truncate mt-3\">\n                    Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider<br \/>\n                <\/figcaption><\/figure>\n<\/li>\n<li data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/promising-antibiotic-c-3.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c-3.jpg\" data-sub-html=\"Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider\">\n<figure class=\"article-img text-center\">\n                <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800\/2024\/promising-antibiotic-c-3.jpg\" alt=\"Promising antibiotic candidates discovered in microbes deep in the Arctic Sea\"\/><figcaption class=\"text-left text-darken text-low-up text-truncate mt-3\">\n                    Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider<br \/>\n                <\/figcaption><\/figure>\n<\/li>\n<li data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/promising-antibiotic-c-4.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c-4.jpg\" data-sub-html=\"Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider\">\n<figure class=\"article-img text-center\">\n                <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800\/2024\/promising-antibiotic-c-4.jpg\" alt=\"Promising antibiotic candidates discovered in microbes deep in the Arctic Sea\"\/><figcaption class=\"text-left text-darken text-low-up text-truncate mt-3\">\n                    Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon, Aug 2020. Credit: Yannik Schneider<br \/>\n                <\/figcaption><\/figure>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Powerful_antivirulence_effects\"><\/span>Powerful antivirulence effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The compounds showed two complementary types of biological activity. First, by inhibiting the formation of so-called &#8220;actin pedestals&#8221; by EPEC bacteria, a key step by which this pathogen attaches to the host&#8217;s gut lining. Second, by inhibiting the binding of EPEC to the so-called Tir receptor on the host cell&#8217;s surface, a step necessary to rewire its intracellular processes and cause disease.<\/p>\n<p>Unlike the compounds from T160-2, the compound from T091-5 didn&#8217;t slow down the growth of EPEC bacteria. This means that T091-5 is the most promising strain of the two, as EPEC is less likely to ultimately evolve resistance against its antivirulence effects.<\/p>\n<p>With advanced analytical techniques, the authors determined that the active compound from T091-5 was most likely a phospholipid: a class of fatty phosphorus-containing molecules that play important roles in cell metabolism.<\/p>\n<p>&#8220;The next steps are the optimization of the culture conditions for compound production and the isolation of sufficient amounts of each compound to elucidate their respective structures and further investigate their respective bioactivities,&#8221; said Tammela.<\/p>\n<div class=\"article-main__more p-4\">\n                                                                                        <strong>More information:<\/strong><br \/>\n                                                Bioprospecting of inhibitors of EPEC virulence from metabolites of marine actinobacteria from the Arctic Sea, <i>Frontiers in Microbiology<\/i> (2024). <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.3389\/fmicb.2024.1432475\">DOI: 10.3389\/fmicb.2024.1432475<\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                <strong>Citation<\/strong>:<br \/>\n                                                Promising antibiotic candidates discovered in microbes deep in the Arctic Sea (2024, August 30)<br \/>\n                                                retrieved 30 August 2024<br \/>\n                                                from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2024-08-antibiotic-candidates-microbes-deep-arctic.html<\/p>\n<p>                                             This document is subject to copyright. 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Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/sciencee\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/phys.org\/news\/2024-08-antibiotic-candidates-microbes-deep-arctic.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Arctic Sea off Svalbard, viewed from the research vessel Kronprins Haakon in August 2020. Credit: Teppo R\u00e4m\u00e4 Antibiotics are the linchpin of modern medicine: without them, anyone with open wounds or needing to undergo surgery would be at constant risk of dangerous infections. Yet we continue to face a global antibiotics crisis, as more&#8230;<\/p>\n","protected":false},"author":1,"featured_media":632708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/promising-antibiotic-c.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-632707","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/632707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=632707"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/632707\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/632708"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=632707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=632707"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=632707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}