{"id":51699,"date":"2026-06-17T08:59:44","date_gmt":"2026-06-17T06:59:44","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=51699"},"modified":"2026-06-17T08:59:45","modified_gmt":"2026-06-17T06:59:45","slug":"per-que-els-virus-no-maten-els-mosquits-que-els-transmeten","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/per-que-els-virus-no-maten-els-mosquits-que-els-transmeten\/","title":{"rendered":"Per qu\u00e8 els virus no maten els mosquits que els transmeten?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Els arbovirus necessiten els mosquits per passar d\u2019una persona a una altra. Per\u00f2&#8230; si aquests virus poden danyar les c\u00e8l\u00b7lules humanes, per qu\u00e8 no destrueixen tamb\u00e9 les c\u00e8l\u00b7lules dels mosquits que els transporten?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un estudi liderat pel <a rel=\"noreferrer noopener\" href=\"https:\/\/juanadiezlab.com\/\" target=\"_blank\">Grup de Virologia Molecular<\/a> del <a rel=\"noreferrer noopener\" href=\"https:\/\/www.upf.edu\/ca\/web\/biomed\" target=\"_blank\">Departament de Medicina i Ci\u00e8ncies de la Vida de la Universitat Pompeu Fabra<\/a> (MELIS-UPF), dirigit per <strong>Juana D\u00edez<\/strong>, apunta a que, dins les c\u00e8l\u00b7lules dels mosquits, el virus pot limitar la producci\u00f3 de prote\u00efnes virals. \u00c9s a dir, pot \u201cabaixar el volum\u201d de la seva pr\u00f2pia activitat.<\/p>\n\n\n\n<div style=\"height:63px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1055\" height=\"1275\" src=\"https:\/\/ellipse.prbb.org\/wp-content\/uploads\/2026\/06\/Sin-t\u00edtulo-16-de-junio-de-2026-a-las-16.45.51.png\" alt=\"La infografia compara qu\u00e8 passa quan un arbovirus infecta altres hostes i quan infecta c\u00e8l\u00b7lules de mosquit. En altres hostes, una major traducci\u00f3 de l\u2019RNA viral genera m\u00e9s prote\u00efnes virals i m\u00e9s dany cel\u00b7lular. En el mosquit, aquesta traducci\u00f3 es reprimeix, es produeixen menys prote\u00efnes virals i la c\u00e8l\u00b7lula es mant\u00e9 intacta. Aquest equilibri pot afavorir que el virus persisteixi dins el mosquit i continu\u00ef transmetent-se.\" class=\"wp-image-51725\" srcset=\"https:\/\/ellipse.prbb.org\/wp-content\/uploads\/2026\/06\/Sin-t\u00edtulo-16-de-junio-de-2026-a-las-16.45.51.png 1055w, https:\/\/ellipse.prbb.org\/wp-content\/uploads\/2026\/06\/Sin-t\u00edtulo-16-de-junio-de-2026-a-las-16.45.51-185x224.png 185w, https:\/\/ellipse.prbb.org\/wp-content\/uploads\/2026\/06\/Sin-t\u00edtulo-16-de-junio-de-2026-a-las-16.45.51-496x600.png 496w, https:\/\/ellipse.prbb.org\/wp-content\/uploads\/2026\/06\/Sin-t\u00edtulo-16-de-junio-de-2026-a-las-16.45.51-768x928.png 768w\" sizes=\"auto, (max-width: 1055px) 100vw, 1055px\" \/><\/figure>\n\n\n\n<div style=\"height:49px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\"><strong>Conceptes clau<\/strong>:<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Qu\u00e8 \u00e9s un arbovirus?<\/strong> Un arbovirus \u00e9s un virus transm\u00e8s per artr\u00f2podes, com mosquits o paparres. Alguns exemples s\u00f3n els virus del dengue, el chikungunya o el virus del Nil occidental.<\/li><li><strong>Qu\u00e8 vol dir \u201ctraducci\u00f3\u201d de l\u2019RNA?<\/strong> La traducci\u00f3 \u00e9s el proc\u00e9s pel qual la c\u00e8l\u00b7lula llegeix la informaci\u00f3 de l\u2019RNA i fabrica prote\u00efnes. En una infecci\u00f3, alguns virus utilitzen aquest proc\u00e9s per produir les seves pr\u00f2pies prote\u00efnes virals.<\/li><\/ul>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Abaixar el volum de l\u2019activitat viral<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El treball, publicat a <em><a href=\"https:\/\/journals.plos.org\/plosbiology\/article?id=10.1371\/journal.pbio.3003702\" target=\"_blank\" rel=\"noreferrer noopener\">PLOS Biology<\/a><\/em>, mostra que en les c\u00e8l\u00b7lules dels mosquits el virus pot acumular RNA viral, per\u00f2 no necess\u00e0riament traduir-lo en grans quantitats de prote\u00efnes. En altres paraules: el virus continua present, per\u00f2 la seva activitat queda parcialment controlada. Aquest proc\u00e9s es coneix com a repressi\u00f3 de la traducci\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si el virus destru\u00eds r\u00e0pidament les c\u00e8l\u00b7lules del mosquit, tamb\u00e9 perdria el seu vehicle de transmissi\u00f3. Per aix\u00f2 el virus fa servir la repressi\u00f3 de la traducci\u00f3 i aix\u00ed poder mantenir una infecci\u00f3 persistent i continuar dins l\u2019insecte sense causar-li un dany immediat.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Un estudi liderat pel MELIS-UPF identifica un mecanisme que permet a arbovirus com el chikungunya persistir dins les c\u00e8l\u00b7lules dels mosquits sense destruir-les.<\/p>\n","protected":false},"author":37,"featured_media":51700,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[958,273,475],"new-type":[35],"class_list":["post-51699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-malaria-ca","tag-melis-upf-ca","tag-virus-ca","new-type-noticies"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/51699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/users\/37"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=51699"}],"version-history":[{"count":22,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/51699\/revisions"}],"predecessor-version":[{"id":51733,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/51699\/revisions\/51733"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/51700"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=51699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=51699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=51699"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=51699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}