{"id":54366,"date":"2023-08-02T03:26:48","date_gmt":"2023-08-02T06:26:48","guid":{"rendered":"https:\/\/www.mundoacuicola.cl\/new\/?p=54366"},"modified":"2023-08-03T09:57:08","modified_gmt":"2023-08-03T12:57:08","slug":"investigacion-de-uach-unab-incar-y-cisa-revela-nuevos-descubrimientos-en-torno-a-ipvn-y-trucha-arcoiris","status":"publish","type":"post","link":"https:\/\/www.mundoacuicola.cl\/new\/investigacion-de-uach-unab-incar-y-cisa-revela-nuevos-descubrimientos-en-torno-a-ipvn-y-trucha-arcoiris\/","title":{"rendered":"Investigaci\u00f3n de UACh, UNAB, INCAR y CISA revela nuevos descubrimientos en torno a IPVN y trucha arco\u00edris"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><b><a href=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=26\" target=\"_blank\" rel=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=26 noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/www.mundoacuicola.cl\/medios\/?camp=26\" alt=\"\" width=\"300\" height=\"250\" \/><\/a><\/b><\/span>Una colaboraci\u00f3n de investigadores de la Universidad Austral de Chile (UACh), Universidad Andr\u00e9s Bello (UNAB), el Centro Interdisciplinario para la Investigaci\u00f3n Acu\u00edcola (INCAR) y el Animal Health Research Center (CISA) de Espa\u00f1a, determin\u00f3 que el virus de la Necrosis Pancre\u00e1tica Infecciosa (IPNV) es capaz de alterar la expresi\u00f3n de genes clave en el sistema inmunitario de truchas arco\u00edris mediante mecanismos epigen\u00e9ticos.<\/p>\n<p>El estudio \u201cEpigenetic reprogramming around IFN1 and IFNy2 promoters in rainbow trout cells inoculated with infectious pancreatic necrosis virus (IPNV)\u201d, que tiene por autores a Ren\u00e9 Manr\u00edquez, Mois\u00e9s Sandoval, Carlos Loncoman, Carolina Tafalla, Ruben Avenda\u00f1o-Herrera y Juan Guillermo C\u00e1rcamo, ser\u00eda el primero en demostrar el efecto de la reprogramaci\u00f3n epigen\u00e9tica despu\u00e9s de la infecci\u00f3n por IPNV en c\u00e9lulas de salm\u00f3nidos, \u201clo que demuestra que el nivel de metilaci\u00f3n\/desmetilaci\u00f3n del promotor y los cambios en el c\u00f3digo de histona asociado con los promotores pueden jugar un papel en la modulaci\u00f3n de la respuesta inmune inducida por el virus\u201d, explican los investigadores.<\/p>\n<p>Para lo anterior, los investigadores llevaron a cabo una caracterizaci\u00f3n in silico de los promotores IFN1 e IFN\u03b32 de trucha arco\u00edris, identificando las islas o secuencias ricas en dinucle\u00f3tidos CpG y los sitios de uni\u00f3n del factor de transcripci\u00f3n putativo (TBS) para ambos promotores g\u00e9nicos. Luego, realizaron una infecci\u00f3n de c\u00e9lulas RTS11 (monocitos\/macr\u00f3fagos de trucha arco\u00edris) con IPNV, y siguieron el curso de la infecci\u00f3n viral durante 48 horas.<\/p>\n<p>A grandes rasgos, los expertos encontraron que las c\u00e9lulas infectadas con el IPNV mostraron una mayor expresi\u00f3n transcripcional de IFN1 e IFN\u03b32 a las 6 y 24 horas post infecci\u00f3n, respectivamente. La infecci\u00f3n tambi\u00e9n provoc\u00f3 aumentos y disminuciones en la metilaci\u00f3n global del promotor de IFN\u03b32 a las 6 y 24 hpi, respectivamente. Por su parte, el promotor de IFN1 permaneci\u00f3 <span style=\"font-weight: 400;\"><strong><a href=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=192\"><img decoding=\"async\" class=\"alignleft\" src=\"https:\/\/www.mundoacuicola.cl\/medios\/?camp=192\" alt=\"\" width=\"300\" height=\"250\" \/><\/a><\/strong><\/span>completamente sin metilar durante el curso de la infecci\u00f3n, de manera similar al control.<\/p>\n<p>\u201cEstos resultados sugieren que IPNV modular\u00eda epigen\u00e9ticamente la expresi\u00f3n de IFN1 cambiando los niveles de acetilaci\u00f3n de las histonas H4 asociadas a su promotor. Asimismo, la modulaci\u00f3n de la expresi\u00f3n de IFNy2 ser\u00eda por cambios en los niveles de metilaci\u00f3n\/desmetilaci\u00f3n de su promotor, adem\u00e1s de cambios en los niveles de acetilaci\u00f3n de las histonas H4 asociadas a este promotor\u201d, concluyeron.<\/p>\n<p><span style=\"font-weight: 400;\">Revisa el paper, publicado por Fish &amp; Shellfish Immunology, <\/span><a href=\"https:\/\/doi.org\/10.1016\/j.fsi.2023.108947\"><span style=\"font-weight: 400;\">https:\/\/doi.org\/10.1016\/j.fsi.2023.108947<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Estudio revela c\u00f3mo el virus IPNV afecta el sistema inmunitario de truchas arco\u00edris mediante mecanismos epigen\u00e9ticos.<\/p>\n","protected":false},"author":8,"featured_media":52960,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[473,18176,11063,18175,18173,18174,764,1072,18172],"class_list":["post-54366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-salmonicultura","tag-incar","tag-infeccion-viral","tag-ipnv","tag-mecanismos-epigeneticos","tag-sistema-inmunitario","tag-truchas-arcoiris","tag-universidad-andres-bello","tag-universidad-austral-de-chile","tag-virus-de-la-necrosis-pancreatica-infecciosa"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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