{"id":112275,"date":"2026-09-02T11:19:10","date_gmt":"2026-09-02T09:19:10","guid":{"rendered":"https:\/\/www.pcb.ub.edu\/irb-barcelona-researchers-identify-the-genetic-mechanism-that-promotes-inflammation-associated-with-skin-aging\/"},"modified":"2026-09-02T11:19:10","modified_gmt":"2026-09-02T09:19:10","slug":"irb-barcelona-researchers-identify-the-genetic-mechanism-that-promotes-inflammation-associated-with-skin-aging","status":"publish","type":"post","link":"https:\/\/www.pcb.ub.edu\/en\/irb-barcelona-researchers-identify-the-genetic-mechanism-that-promotes-inflammation-associated-with-skin-aging\/","title":{"rendered":"IRB Barcelona researchers identify the genetic mechanism that promotes inflammation associated with skin aging"},"content":{"rendered":"<p><strong>Researchers at the Institute for Research in Biomedicine (<a href=\"https:\/\/www.pcb.ub.edu\/en\/empresa\/institut-de-recerca-biomedica-irb-barcelona\/\" target=\"_blank\" rel=\"noopener\">IRB Barcelona<\/a>), located at the Barcelona Science Park, identify a molecular mechanism that amplifies chronic inflammation in aged skin. With age, two proteins that normally help maintain epidermal function, BMAL1 and YAP, switch to promoting genes associated with inflammation. The study, published in the journal <em>Nature Aging<\/em>, has been <\/strong><strong>conducted mainly in mice and supported by the analysis of human skin data.<br \/>\n<\/strong><\/p>\n<p>As we age, the skin loses part of its ability to regenerate, heal wounds, and maintain an effective barrier against the outside world. Among the causes of this deterioration is a low-grade, persistent age-associated inflammation, but the mechanisms that keep this response active in skin cells are not yet well understood.<\/p>\n<p>A study led by <strong>Dr. Guiomar Solanas<\/strong>, now at the <a href=\"https:\/\/www.irsjd.org\/en\/\" target=\"_blank\" rel=\"noopener\">Institut de Recerca Sant Joan de D\u00e9u<\/a>, Pediatric Cancer Center Barcelona, and <strong>Dr. Salvador Aznar Benitah<\/strong> describes a molecular mechanism that explains this process. During ageing, two proteins called BMAL1 and YAP change the way they work together and increase the activity of inflammatory genes in the epidermis, the outermost layer of the skin. The work has been published in the journal Nature Aging.<\/p>\n<p>&#8220;Our results show that, during ageing, mechanisms that normally maintain epidermal homeostasis change function and begin to amplify inflammation,&#8221; explains <strong>Dr. Salvador Aznar Benitah<\/strong>, ICREA researcher and head of the <a href=\"https:\/\/www.irbbarcelona.org\/en\/research\/stem-cells-and-cancer\" target=\"_blank\" rel=\"noopener\">Stem Cells and Cancer laboratory at IRB Barcelona<\/a>.<\/p>\n<h3><strong>A machinery that changes function<\/strong><\/h3>\n<p>BMAL1 is known for being part of the circadian clock, which coordinates numerous processes in the body throughout the day. For its part, YAP helps cells adapt to physical changes in their environment. The study reveals that both proteins collaborate in the epidermis independently of daily rhythms. In adult skin, this collaboration contributes to preserving the identity and proper function of skin cells.<\/p>\n<p>What happens with age is that changes in skin stiffness, together with an increase in inflammatory signals, cause both proteins to concentrate in regions of DNA that control inflammatory genes and increase their activity.<\/p>\n<h3><strong>From IL-17 to the skin cell response<\/strong><\/h3>\n<p>The finding provides continuity to a study from the same laboratory, published in 2023. In that work, the team identified IL-17 as a key inflammatory signal in skin ageing. In mice, temporary blockade of this protein reduced persistent inflammation and delayed some features associated with skin ageing.<\/p>\n<p>The new research shows what happens inside epidermal cells when they receive this signal, which originates from immune cells in the dermis (the deeper layer of the skin). According to the experiments, IL-17 contributes to the activation of YAP. When the team blocked IL-17 in aged mice, YAP-associated activity and the expression of the inflammatory genes studied also decreased.<\/p>\n<p>&#8220;In 2023, we identified IL-17 as a key signal in skin ageing. Now we have discovered how epidermal cells respond to that signal and amplify inflammation,&#8221; explains <strong>J\u00falia Bonjoch<\/strong>, first author of the study.<\/p>\n<p>The finding clarifies how ageing and inflammation are connected in the skin. The next step will be to explore whether this mechanism can be safely regulated without compromising essential functions of the epidermis.<\/p>\n<p>Researchers from the Max Planck Institute for Molecular Biomedicine in M\u00fcnster, Germany, also participated in this study. The research was funded by the European Research Council, the Government of Spain, the Generalitat de Catalunya, the Fundaci\u00f3 La Marat\u00f3 de TV3, the Fondation Bettencourt Schueller, the Spanish Association Against Cancer, and Worldwide Cancer Research, among other entities.<\/p>\n<p><strong>\u00bb\u00a0Article of reference: <\/strong>Non-circadian BMAL1-YAP activity amplifies persistent inflammation in aged epidermis. J\u00falia Bonjoch, Paloma Sol\u00e1, Sandra Garcia-Mulero, Thomas Mortimer, Oscar Reina, Camille Stephan-Otto Attolini, Yekaterina A. Miroshnikova, Sara A. Wickstr\u00f6m, Laura \u00c1lvarez, Salvador Aznar Benitah*, Guiomar Solanas*. Nature Aging (2026) DOI:\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s43587-026-01192-1\" target=\"_blank\" rel=\"noopener\">10.1038\/s43587-026-01192-1<\/a><\/p>\n<p><strong>\u00bb Link to the news: <\/strong><a href=\"https:\/\/www.irbbarcelona.org\/en\/news\/scientific\/aging-reprograms-skin-genetic-activity-and-promotes-inflammation\" target=\"_blank\" rel=\"noopener\">IRB Barcelona website [+]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers at the Institute for Research in Biomedicine (IRB Barcelona), located at the Barcelona Science Park, identify a molecular mechanism that amplifies chronic inflammation in aged skin. With age, two&#8230;<\/p>\n","protected":false},"author":14,"featured_media":112280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[36],"tags":[260],"class_list":["post-112275","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-irb-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IRB Barcelona researchers identify the genetic mechanism that promotes inflammation associated with skin aging - Parc Cient\u00edfic de Barcelona<\/title>\n<meta name=\"description\" content=\"The study, published in the journal Nature Aging, it was carried out mainly in mice, with analysis of human skin data.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pcb.ub.edu\/investigadors-de-lirb-barcelona-identifiquen-el-mecanisme-genetic-que-afavoreix-la-inflamacio-associada-a-lenvelliment-de-la-pell\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IRB Barcelona researchers identify the genetic mechanism that promotes inflammation associated with skin aging - 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