{"id":2985,"date":"2025-10-09T11:29:41","date_gmt":"2025-10-09T15:29:41","guid":{"rendered":"https:\/\/elglobal.do\/?p=2985"},"modified":"2025-10-09T11:29:44","modified_gmt":"2025-10-09T15:29:44","slug":"descubren-un-mecanismo-bacteriano-que-podria-destruir-celulas-tumorales","status":"publish","type":"post","link":"https:\/\/elglobal.do\/index.php\/2025\/10\/09\/descubren-un-mecanismo-bacteriano-que-podria-destruir-celulas-tumorales\/","title":{"rendered":"Descubren un mecanismo bacteriano que podr\u00eda destruir c\u00e9lulas tumorales"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"896\" height=\"504\" src=\"https:\/\/elglobal.do\/wp-content\/uploads\/2025\/10\/image-43.png\" alt=\"\" class=\"wp-image-2986\" style=\"width:624px;height:auto\" srcset=\"https:\/\/elglobal.do\/wp-content\/uploads\/2025\/10\/image-43.png 896w, https:\/\/elglobal.do\/wp-content\/uploads\/2025\/10\/image-43-300x169.png 300w, https:\/\/elglobal.do\/wp-content\/uploads\/2025\/10\/image-43-768x432.png 768w\" sizes=\"auto, (max-width: 896px) 100vw, 896px\" \/><\/figure>\n\n\n\n<p><strong>Espa\u00f1a.<\/strong>&#8211; Un\u00a0<strong>estudio<\/strong>\u00a0internacional liderado por el\u00a0<strong>Centro de Investigaci\u00f3n del C\u00e1ncer<\/strong>\u00a0(CIC), centro mixto del CSIC y la Universidad de Salamanca de Espa\u00f1a ha identificado un mecanismo por el cual una\u00a0<strong>prote\u00edna secretada<\/strong>\u00a0por la bacteria &#8216;<strong>vibrio cholerae<\/strong>&#8216; es capaz de destruir\u00a0<strong>c\u00e9lulas cancerosas<\/strong>.<\/p>\n\n\n\n<p>La investigaci\u00f3n,&nbsp;<strong>publicada en Cell Death Discovery<\/strong>&nbsp;y que abre la puerta a&nbsp;<strong>nuevos tratamientos<\/strong>, ha probado el mecanismo descubierto en&nbsp;<strong>c\u00e9lulas tumorales humanas<\/strong>&nbsp;de mama, colon y p\u00e1ncreas.<\/p>\n\n\n\n<p>La\u00a0<strong>prote\u00edna HapA<\/strong>, producida por la bacteria &#8216;<strong>vibrio cholerae<\/strong>&#8216;, act\u00faa como una especie de &#8216;llave&#8217; capaz de localizar unas &#8216;cerraduras&#8217; espec\u00edficas (llamadas\u00a0<strong>receptores PAR-1 y PAR-2<\/strong>) que se encuentran en la superficie de las c\u00e9lulas tumorales y, al abrir esas cerraduras, provoca una reacci\u00f3n en cadena dentro de las c\u00e9lulas que las lleva a\u00a0<strong>autodestruirse<\/strong>.<\/p>\n\n\n\n<p>El equipo cient\u00edfico emple\u00f3 tanto el&nbsp;<strong>cultivo bacteriano original<\/strong>&nbsp;como&nbsp;<strong>bacterias inocuas<\/strong>&nbsp;artificialmente modificadas para producir solo HapA, y as\u00ed se demostr\u00f3 que el efecto era realmente causado por esta prote\u00edna concreta y no por otros posibles factores de la bacteria.<\/p>\n\n\n\n<p>\u00abEste trabajo demuestra el potencial de las&nbsp;<strong>prote\u00ednas bacterianas<\/strong>&nbsp;como&nbsp;<strong>herramientas terap\u00e9uticas<\/strong>&nbsp;antitumorales. La acci\u00f3n selectiva y el modo de activaci\u00f3n intracelular abren nuevas perspectivas para desarrollar tratamientos combinados y espec\u00edficos\u00bb, ha subrayado el investigador del CSIC espa\u00f1ol en el CIC&nbsp;<strong>Antonio Hurtado<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Una metodolog\u00eda precisa<\/h2>\n\n\n\n<p>Para desarrollar este&nbsp;<strong>estudio<\/strong>&nbsp;se cultiv\u00f3 la bacteria &#8216;<strong>vibrio cholerae<\/strong>&#8216;, contando con una&nbsp;<strong>cepa normal<\/strong>&nbsp;y otra mutante modificada gen\u00e9ticamente, y posteriormente se recogi\u00f3 &#8216;<strong>supernatante<\/strong>&#8216;, que es el l\u00edquido donde crecen estas bacterias y que tambi\u00e9n contiene las prote\u00ednas y sustancias liberadas por la bacteria, y se aplic\u00f3 a&nbsp;<strong>c\u00e9lulas cancerosas<\/strong>&nbsp;humanas de colon, mama y p\u00e1ncreas para observar qu\u00e9 efectos produc\u00eda.<\/p>\n\n\n\n<p>\u00abLo que buscamos fue comprobar si las&nbsp;<strong>c\u00e9lulas humanas<\/strong>&nbsp;de distintos&nbsp;<strong>tipos tumorales<\/strong>&nbsp;(mama, colon y p\u00e1ncreas) segu\u00edan vivas y si pod\u00edan multiplicarse tras estar en contacto con estas sustancias bacterianas, en particular con la&nbsp;<strong>prote\u00edna HapA<\/strong>\u00ab, ha explicado explica Hurtado.<\/p>\n\n\n\n<p>En la investigaci\u00f3n han empleado\u00a0<strong>sistemas avanzados<\/strong>\u00a0de\u00a0<strong>imagen en tiempo real<\/strong>\u00a0que permiten contar c\u00e9lulas vivas y muertas, y medir la apoptosis (<strong>muerte programada<\/strong>) para observar con precisi\u00f3n el bloqueo de las v\u00edas.\u00a0<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Espa\u00f1a.&#8211; Un\u00a0estudio\u00a0internacional liderado por el\u00a0Centro de Investigaci\u00f3n del C\u00e1ncer\u00a0(CIC), centro mixto del CSIC y la Universidad de Salamanca de Espa\u00f1a ha identificado un mecanismo por el cual una\u00a0prote\u00edna secretada\u00a0por la&hellip; <\/p>\n","protected":false},"author":1,"featured_media":2986,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[1642,1643,1644,1645],"class_list":["post-2985","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia","tag-bacterias","tag-celulas","tag-celulastumorales","tag-tumor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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