
{"id":67063,"date":"2019-07-01T15:07:34","date_gmt":"2019-07-01T13:07:34","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=67063"},"modified":"2020-06-15T11:36:24","modified_gmt":"2020-06-15T09:36:24","slug":"descoberts-els-factors-determinants-per-a-la-propulsio-de-microrobots","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/descoberts-els-factors-determinants-per-a-la-propulsio-de-microrobots\/","title":{"rendered":"Descoberts els factors determinants per a la propulsi\u00f3 de microrobots"},"content":{"rendered":"<p>Un exemple d&#8217;aix\u00f2 \u00e9s el grup de Dispositius Intel\u00b7ligents Nanobio, liderat per Samuel S\u00e1nchez, investigador ICREA a l&#8217;Institut de Bioenginyeria de Catalunya (IBEC).<\/p>\n<p>Despr\u00e9s d&#8217;anys desenvolupant dispositius de la grand\u00e0ria d&#8217;una mil\u00b7l\u00e8sima part del gruix d&#8217;un cabell per a aplicacions tecnol\u00f2giques i biom\u00e8diques, el grup de S\u00e1nchez, en col\u00b7laboraci\u00f3 multidisciplin\u00e0ria amb un equip de qu\u00edmica computacional, ha fet un nou salt significatiu en la seva recerca: entendre els processos a escala molecular que permeten als anomenats micromotors, propulsar-se per un l\u00edquid. L&#8217;estudi, que s&#8217;ha publicat avui a la prestigiosa revista Nature Communications, S\u00e1nchez i els seus col\u00b7laboradors descriuen el que fins ara resultava un misteri per a la comunitat cient\u00edfica: com era possible que enzims, que s\u00f3n m\u00e0quines catal\u00edtiques a escala nanosc\u00f2pica, arribessin a propulsar part\u00edcules enormes en relaci\u00f3 a elles?<\/p>\n<p>Mentre que la majoria de grups de recerca centraven els seus esfor\u00e7os a dotar als microrobots de propulsors basats en un enzim anomenat ureasa, els investigadors de l&#8217;IBEC han aconseguit adherir i provar la mobilitat d&#8217;aquests objectes microsc\u00f2pics amb tota una nova s\u00e8rie d&#8217;enzims. Xavier Arqu\u00e9, estudiant de doctorat a l&#8217;IBEC i primer autor de l&#8217;estudi, afirma: &#8220;El secret de la mobilitat d&#8217;aquests microrobots radica en les propietats dels mateixos enzims&#8221;. Mentre que enzims com la ureasa i l&#8217;acetilcolinesterasa podrien canviar la seva estructura interna, estant aquest proc\u00e9s relacionat amb una major velocitat de reacci\u00f3 (coneguda com a <em>conformaci\u00f3<\/em> en terminologia cient\u00edfica), i generar la propulsi\u00f3 dels micromotors, uns altres enzims m\u00e9s r\u00edgids amb menor velocitat de reacci\u00f3 no eren capa\u00e7os de generar tal mobilitat. En paraules del propi S\u00e1nchez: &#8220;\u00e9s la primera vegada que podem preveure si un enzim en ser\u00e0 \u00fatil per a propulsar objectes microsc\u00f2pics&#8221;.<\/p>\n<p>Per a dur a terme el descobriment, els investigadors van combinar les t\u00e8cniques m\u00e9s avan\u00e7ades de simulaci\u00f3 per ordinador amb t\u00e8cniques experimentals, gr\u00e0cies a la col\u00b7laboraci\u00f3 amb el grup de la Dra. S\u00edlvia Osuna, professora ICREA de la Universitat de Girona. Aquest descobriment obre la porta a tota una nova s\u00e8rie de microrobots autopropulsats amb aplicacions en medecina, tractament d&#8217;aig\u00fces i biotecnologia.<\/p>\n<p><strong>Article de refer\u00e8ncia:<\/strong>\u00a0Xavier Arqu\u00e9, Adrian Romero-Rivera, Ferran Feixas, Tania Pati\u00f1o, S\u00edlvia Osuna &amp; Samuel S\u00e1nchez (2019) Intrinsic enzymatic properties modulate the self-propulsion of micromotors, Nature Communications 10, 2826. DOI: <a href=\"https:\/\/doi.org\/10.1038\/s41467-019-10726-8\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.1038\/s41467-019-10726-8<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" class=\"alignnone size-full wp-image-67059 lazyload\" data-src=\"http:\/\/www.ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web.png\" alt=\"\" width=\"885\" height=\"497\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web.png 885w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web-300x168.png 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web-768x431.png 768w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web-230x130.png 230w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2019\/07\/ndp_ssanchez_web-150x84.png 150w\" data-sizes=\"(max-width: 885px) 100vw, 885px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 885px; --smush-placeholder-aspect-ratio: 885\/497;\" \/>Un estudi liderat per investigadors de l&#8217;Institut de Bioenginyeria de Catalunya (IBEC) obre la porta a la mobilitat de nous objectes microsc\u00f2pics utilitzant tota una llibreria d&#8217;enzims. Segons els experts, aquests microrobots es podran utilitzar en un futur pr\u00f2xim amb aplicacions mediambientals i biom\u00e8diques.<\/h3>\n<\/p>\n<p>Ingerir una pastilla per a curar una greu malaltia, o afegir un polsim de pols sint\u00e8tic per a potabilitzar l&#8217;aigua, semblaven conceptes de ci\u00e8ncia-ficci\u00f3 fins fa tan sols unes generacions. No obstant aix\u00f2, l&#8217;aparici\u00f3 de noves disciplines com la bioenginyeria, est\u00e0 elevant el nivell de sofisticaci\u00f3 i especialitzaci\u00f3 de nous materials fins a l\u00edmits insospitats.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[1140],"post_formats":[],"class_list":["post-67063","post","type-post","status-publish","format-standard","hentry","category-noticies-de-recerca","tag-samuel-sanchez-ca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Descoberts els factors determinants per a la propulsi\u00f3 de microrobots - Institute for Bioengineering of Catalonia<\/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:\/\/ibecbarcelona.eu\/ca\/descoberts-els-factors-determinants-per-a-la-propulsio-de-microrobots\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Descoberts els factors determinants per a la propulsi\u00f3 de microrobots - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Un estudi liderat per investigadors de l&#039;Institut de Bioenginyeria de Catalunya (IBEC) obre la porta a la mobilitat de nous objectes microsc\u00f2pics utilitzant tota una llibreria d&#039;enzims. Segons els experts, aquests microrobots es podran utilitzar en un futur pr\u00f2xim amb aplicacions mediambientals i biom\u00e8diques.  Ingerir una pastilla per a curar una greu malaltia, o afegir un polsim de pols sint\u00e8tic per a potabilitzar l&#039;aigua, semblaven conceptes de ci\u00e8ncia-ficci\u00f3 fins fa tan sols unes generacions. 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