{"title":"烧毁房子:胸腺修复和再生后的急性损伤","authors":"Jarrod A. Dudakov, Marcel R. M. van den Brink","doi":"10.1111/imr.70050","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The thymus is extremely sensitive to insult but also has a remarkable capacity for endogenous repair. However, even though there is continual thymic involution and regeneration in response to everyday insults like stress and infection, profound thymic damage such as ionizing radiation leads to prolonged T cell lymphopenia for which there is currently no therapeutic treatment. We and others have been focusing in recent years on untangling the cellular and molecular mechanisms underlying endogenous thymic regeneration in the hope of being able to exploit them for clinical benefit. To date, multiple molecular mechanisms have been identified that are centered on several distinct cell axes, including interleukin-22 produced by innate lymphoid cells, BMP4 by endothelial cells, and type 2 cytokines from eosinophils, ILCs, and Tregs. Notably, one of the uniting triggers for these pathways of repair centers on the balance of cell death detection. In this review, we will highlight the current state of play with regard to cellular and molecular pathways of regeneration as well as the mechanisms triggering them. We will also highlight recent work that sheds light on the limitations of thymus repair and speculate as to what will be needed for an effective thymus-boosting therapy.</p>\n </div>","PeriodicalId":178,"journal":{"name":"Immunological Reviews","volume":"332 1","pages":""},"PeriodicalIF":7.5000,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Burning Down the House: Thymic Repair and Regeneration After Acute Damage\",\"authors\":\"Jarrod A. Dudakov, Marcel R. M. van den Brink\",\"doi\":\"10.1111/imr.70050\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>The thymus is extremely sensitive to insult but also has a remarkable capacity for endogenous repair. However, even though there is continual thymic involution and regeneration in response to everyday insults like stress and infection, profound thymic damage such as ionizing radiation leads to prolonged T cell lymphopenia for which there is currently no therapeutic treatment. We and others have been focusing in recent years on untangling the cellular and molecular mechanisms underlying endogenous thymic regeneration in the hope of being able to exploit them for clinical benefit. To date, multiple molecular mechanisms have been identified that are centered on several distinct cell axes, including interleukin-22 produced by innate lymphoid cells, BMP4 by endothelial cells, and type 2 cytokines from eosinophils, ILCs, and Tregs. Notably, one of the uniting triggers for these pathways of repair centers on the balance of cell death detection. In this review, we will highlight the current state of play with regard to cellular and molecular pathways of regeneration as well as the mechanisms triggering them. We will also highlight recent work that sheds light on the limitations of thymus repair and speculate as to what will be needed for an effective thymus-boosting therapy.</p>\\n </div>\",\"PeriodicalId\":178,\"journal\":{\"name\":\"Immunological Reviews\",\"volume\":\"332 1\",\"pages\":\"\"},\"PeriodicalIF\":7.5000,\"publicationDate\":\"2025-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Immunological Reviews\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/imr.70050\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"IMMUNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Immunological Reviews","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/imr.70050","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
Burning Down the House: Thymic Repair and Regeneration After Acute Damage
The thymus is extremely sensitive to insult but also has a remarkable capacity for endogenous repair. However, even though there is continual thymic involution and regeneration in response to everyday insults like stress and infection, profound thymic damage such as ionizing radiation leads to prolonged T cell lymphopenia for which there is currently no therapeutic treatment. We and others have been focusing in recent years on untangling the cellular and molecular mechanisms underlying endogenous thymic regeneration in the hope of being able to exploit them for clinical benefit. To date, multiple molecular mechanisms have been identified that are centered on several distinct cell axes, including interleukin-22 produced by innate lymphoid cells, BMP4 by endothelial cells, and type 2 cytokines from eosinophils, ILCs, and Tregs. Notably, one of the uniting triggers for these pathways of repair centers on the balance of cell death detection. In this review, we will highlight the current state of play with regard to cellular and molecular pathways of regeneration as well as the mechanisms triggering them. We will also highlight recent work that sheds light on the limitations of thymus repair and speculate as to what will be needed for an effective thymus-boosting therapy.
期刊介绍:
Immunological Reviews is a specialized journal that focuses on various aspects of immunological research. It encompasses a wide range of topics, such as clinical immunology, experimental immunology, and investigations related to allergy and the immune system.
The journal follows a unique approach where each volume is dedicated solely to a specific area of immunological research. However, collectively, these volumes aim to offer an extensive and up-to-date overview of the latest advancements in basic immunology and their practical implications in clinical settings.