{"id":103130,"date":"2025-03-31T11:30:04","date_gmt":"2025-03-31T09:30:04","guid":{"rendered":"https:\/\/www.pcb.ub.edu\/scientists-at-irb-barcelona-identify-new-key-molecular-mechanism-for-cellular-adaptation-to-stress-discovered\/"},"modified":"2025-03-31T11:30:04","modified_gmt":"2025-03-31T09:30:04","slug":"scientists-at-irb-barcelona-identify-new-key-molecular-mechanism-for-cellular-adaptation-to-stress-discovered","status":"publish","type":"post","link":"https:\/\/www.pcb.ub.edu\/en\/scientists-at-irb-barcelona-identify-new-key-molecular-mechanism-for-cellular-adaptation-to-stress-discovered\/","title":{"rendered":"Scientists at IRB Barcelona identify new key molecular mechanism for cellular adaptation to stress discovered"},"content":{"rendered":"<p><strong>A team at <a href=\"https:\/\/www.pcb.ub.edu\/en\/empresa\/institut-de-recerca-biomedica-irb-barcelona\/\" target=\"_blank\" rel=\"noopener\">IRB Barcelona<\/a>, located at Barcelona Science Park, has discovered a new role for the protein Headcase (HECA), which is crucial for cell protection against oxidative stress, that can contribute to our understanding of resistance to stress in tumor cells and stem cells. The study, published in the journal Science Advances, has been headed by Dr. Panagiotis Giannios and Dr. Jordi Casanova, identifying the protein Headcase in the Drosophila fly (or HECA in humans) as a key player in protecting cells against stress.\u00a0<\/strong><\/p>\n<p>Cells continuously face adverse conditions like nutrient deprivation or sudden temperature shifts. Gaining insight into how they endure and adapt to these challenges is essential for understanding fundamental biology and tackling diseases associated with cellular stress, such as cancer and neurodegenerative disorders. This new finding of IRB Barcelona reveals how protein Headcase regulates one of the cell structures called \u201cstress granules&#8221;, which enable cells to rapidly reprogram and focus their resources on vital survival functions.<\/p>\n<p>This discovery stems from studies on the metamorphosis of Drosophila melanogaster, a process in which nearly all larval cells die, except for certain stem cells that survive and give rise to the adult organism. Researchers sought to understand how these specific cells withstand such extreme conditions, leading to the discovery of the key role that Headcase plays in the stress response.<\/p>\n<p>&#8220;This finding helps us understand how stem cells, but also tumour cells undergoing processes such as metastasis, can survive extremely adverse conditions,\u201d explains <strong>Dr. Jordi Casanova<\/strong>, head of the <a href=\"https:\/\/www.irbbarcelona.org\/en\/research\/development-and-morphogenesis-in-drosophila\" target=\"_blank\" rel=\"noopener\">Development and Morphogenesis lab<\/a> at IRB Barcelona.<\/p>\n<h3><strong>A key protein for cell survival<\/strong><\/h3>\n<p>Under normal conditions, the protein Headcase is dispersed throughout the cytoplasm, but in response to stress, it rapidly reorganizes into stress granules, essential structures that regulate protein production and protect cells. Similarly, the human version of this protein (HECA) also plays a role in these protective mechanisms. Scientists found that reducing HECA expression in human cells makes them more vulnerable to oxidative stress, leading to increased production of reactive oxygen species\u2014factors known to be linked to various diseases.<\/p>\n<h3><strong>Implications for understanding resistance in cancer<\/strong><\/h3>\n<p>The study highlights HEC proteins as potential therapeutic targets, given the growing recognition of the role that cellular resistance plays in diseases such as cancer and neurodegenerative disorders.<\/p>\n<p>The work was undertaken by the researchers <strong>Dr. Delia Ricolo<\/strong>, <strong>Dr. Panagiotis Giannios<\/strong>, and <strong>Dr. Jordi Casanova,<\/strong> all members of the Development and Morphogenesis lab at IRB Barcelona and the Institute of Molecular Biology of Barcelona (CSIC). This study was supported by funding from the Spanish Ministry of Science and Innovation and the Government of Catalonia.<\/p>\n<p><strong>\u00bb Article of referencia:<\/strong> Drosophila and human Headcase define a new family of Ribonucleotide granule proteins required for stress response. Delia Ricolo, Jordi Casanova &amp; Panagiotis Giannios. Science Advances (2024). doi: <a href=\"https:\/\/doi.org\/10.1126\/sciadv.ads2086\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1126\/sciadv.ads2086<\/a><\/p>\n<p><strong>\u00bb Enlla\u00e7 a la not\u00edcia:<\/strong> <a href=\"https:\/\/www.irbbarcelona.org\/en\/news\/scientific\/new-key-molecular-mechanism-cellular-adaptation-stress-discovered\" target=\"_blank\" rel=\"noopener\">IRB Barcelona website [+]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A team at IRB Barcelona, located at Barcelona Science Park, has discovered a new role for the protein Headcase (HECA), which is crucial for cell protection against oxidative stress, that&#8230;<\/p>\n","protected":false},"author":1,"featured_media":103126,"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-103130","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 v27.7 - 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