2026-08-09T07:40:19Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/270112025-12-18T12:57:33Zcom_20.500.12105_19604com_20.500.12105_2051col_20.500.12105_19605

00925njm 22002777a 4500 dc Vicanolo, Tommaso author Özcan, Alaz author Li, Jackson LiangYao author Huerta-López, Carla author Ballesteros, Iván author Rubio-Ponce, Andrea author Dumitru, Andra C author Nicolás-Ávila, Jose Ángel author Molina-Moreno, Miguel author Reyes-Gutierrez, Pablo author Johnston, Andrew D author Martone, Catherine author Greto, Eric author Quílez-Alvarez, Antonio author Calvo, Enrique author Bonzon-Kulichenko, Elena author Álvarez-Velez, Rebeca author Chooi, Ming Yao author Kwok, Immanuel author González-Bermúdez, Blanca author Malleret, Benoit author Espinosa, Francisco M author Zhang, Ming author Wang, Yu-Long author Sun, Dasheng author Zhen Chong, Shu author El-Armouche, Ali author Kim, Kevin K author Udalova, Irina A author Greco, Valentina author Garcia, Ricardo author Vázquez, Jesús author Dopazo, Ana author Plaza, Gustavo R author Alegre-Cebollada, Jorge author Uderhardt, Stefan author Ng, Lai Guan author Hidalgo, Andrés author 2025-05 Defence from environmental threats is provided by physical barriers that confer mechanical protection and prevent the entry of microorganisms. If microorganisms overcome those barriers, however, innate immune cells use toxic chemicals to kill the invading cells. Here we examine immune diversity across tissues and identify a population of neutrophils in the skin that expresses a broad repertoire of proteins and enzymes needed to build the extracellular matrix. In the naive skin, these matrix-producing neutrophils contribute to the composition and structure of the extracellular matrix, reinforce its mechanical properties and promote barrier function. After injury, these neutrophils build 'rings' of matrix around wounds, which shield against foreign molecules and bacteria. This structural program relies on TGFβ signalling; disabling the TGFβ receptor in neutrophils impaired ring formation around wounds and facilitated bacterial invasion. We infer that the innate immune system has evolved diverse strategies for defence, including one that physically shields the host from the outside world. Nature. 2025 May;641(8063):740-748. NATURE 40108463 https://hdl.handle.net/20.500.12105/27011 Matrix-producing neutrophils populate and shield the skin.