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TET1 loss propels the development of hyperthyroidism by remodeling histone modifications of PAX8 promoter TET1缺失通过重塑PAX8启动子的组蛋白修饰促进甲亢的发展。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-29 DOI: 10.1038/s12276-025-01566-2
Hui Dang, Yan Liu, Ye Zhou, Mengjun Sui, Yubo Wang, Wei Qiang, Fang Sui, Yan Zhang, Hongxin Cao, Xiaoyan Wu, Meiju Ji, Peng Hou
Ten eleven translocation 1 (TET1) is a 5-methylcytosine dioxygenase, and its altered DNA demethylation has been implicated in human diseases. However, its role in regulating thyroid function remains totally unknown. Here we first generated thyroid-specific Tet1 knockout combined with thyroid-specific BrafV600E transgenic mouse model (Thy-BrafV600E; Tet1−/−) and their control mice (Thy-BrafV600E; Tet1+/+). The latter developed severe hypothyroidism and lost reproductive ability owing to structural damages of thyroid gland, while thyroid-specific Tet1 knockout effectively restored thyroid structure and function of Thy-BrafV600E; Tet1+/+ mice and their reproductive ability. In addition, we also established thyroid-specific Tet1 knockout mouse model (Thy-Tet1−/−) and demonstrated that these mice could develop hyperthyroidism with systemic hypermetabolic symptoms such as weight loss, increased heart rate and elevated systolic blood pressure, further supporting the inhibitory effect of TET1 on thyroid function. Transcriptomic sequencing revealed that key genes related to metabolism and synthesis of thyroid hormones such as PAX8, SLC5A5 and TPO were significantly upregulated in Thy-Tet1−/− mice. Mechanistically, TET1 recruits HDAC1 to reduce the levels of H3K27Ac and H3K9Ac in the PAX8 promoter, thereby inhibiting the expression of itself and its downstream targets NIS and TPO. Further studies showed that elevated miR-29c-3p in serum exosomes enhanced thyroid function by targeting TET1, which may be one of the causes of hyperthyroidism. Thus, this study uncovers a new mechanism by which TET1 suppresses thyroid function, providing a new perspective to explore the pathogenesis of hyperthyroidism. Hyperthyroidism is a condition in which the thyroid gland produces too many hormones, leading to symptoms such as weight loss and irritability. Here scientists are exploring the role of a protein called TET1 in thyroid function. TET1 is known for its role in modifying DNA, which can affect how genes are turned on or off. In this study, researchers investigated whether TET1 influences thyroid activity. They used mice that were genetically modified to lack TET1 specifically in their thyroid glands. These mice showed signs of hyperthyroidism such as increased thyroid hormone levels and faster metabolism. The researchers found that TET1 normally helps suppress the activity of certain genes involved in thyroid hormone production by interacting with other proteins that modify DNA structure. This study suggests that TET1 plays a crucial role in regulating thyroid function and that its absence can lead to hyperthyroidism. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
10 - 11易位1 (TET1)是一种5-甲基胞嘧啶双加氧酶,其DNA去甲基化的改变与人类疾病有关。然而,它在调节甲状腺功能中的作用仍是完全未知的。在这里,我们首先生成甲状腺特异性Tet1敲除联合甲状腺特异性BrafV600E转基因小鼠模型(Thy-BrafV600E; Tet1-/-)及其对照小鼠(Thy-BrafV600E; Tet1+/+)。后者由于甲状腺结构损伤导致严重甲状腺功能减退,丧失生殖能力,而甲状腺特异性敲除Tet1可有效恢复Thy-BrafV600E的甲状腺结构和功能;Tet1+/+小鼠及其生殖能力。此外,我们还建立了甲状腺特异性Tet1敲除小鼠模型(Thy-Tet1-/-),证实这些小鼠可出现甲状腺功能亢进,伴有体重减轻、心率加快、收缩压升高等全身性高代谢症状,进一步支持Tet1对甲状腺功能的抑制作用。转录组测序结果显示,Thy-Tet1-/-小鼠中与甲状腺激素代谢和合成相关的关键基因PAX8、SLC5A5和TPO显著上调。机制上,TET1招募HDAC1降低PAX8启动子中H3K27Ac和H3K9Ac的水平,从而抑制自身及其下游靶点NIS和TPO的表达。进一步研究表明,血清外泌体中miR-29c-3p升高通过靶向TET1增强甲状腺功能,这可能是甲状腺功能亢进的原因之一。因此,本研究揭示了TET1抑制甲状腺功能的新机制,为探讨甲状腺功能亢进的发病机制提供了新的视角。
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引用次数: 0
The multifaceted role of hair as a biospecimen: recent advances in precision medicine and forensic science 头发作为生物标本的多方面作用:精准医学和法医学的最新进展。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-27 DOI: 10.1038/s12276-025-01548-4
Sunil S. Adav, Kee Woei Ng
Hair specimens are vital in precision medicine, forensics and environmental monitoring owing to their ability to retain biochemical data over time. Their noninvasive collection and long-term storage suitability make them ideal for diagnostics and investigations, offering historical insights into health and exposure records. In medicine, hair analysis provides a long-term biochemical profile, aiding in monitoring health conditions, nutritional deficiencies, toxin exposure and treatment efficacy. Advances in mass spectrometry, chromatography and spectroscopy have expanded their applications to cancer diagnostics, tuberculosis, HIV, neurological disorders and mental health assessments. In forensic science, the resistance of hair to decomposition and its ability to absorb substances help identify individuals, detect drug use and reconstruct crime scenes. Omics techniques such as genomics, proteomics and metabolomics enhance forensic accuracy by enabling precise substance detection and timeline reconstruction. Despite its potential, challenges such as hair growth variability, contamination and lack of standardized techniques limit the current impact of hair analysis. Addressing these issues could advance its role in diagnostics and forensic investigations. This review explores recent advancements and applications of hair analysis in precision medicine, infectious diseases, mental health, stress assessment and forensic science. Hair is a simple yet valuable sample used in many fields such as medicine, cosmetics and forensics. It is easy to collect and store, making it useful for studying diseases and environmental exposures. This study aims to address how hair can be better used in precision medicine and diagnostics. Researchers have found that hair can help detect diseases such as cancer and monitor drug levels in patients. They use advanced techniques including mass spectrometry (a method to measure molecules) to analyze hair samples. This helps in understanding how drugs are absorbed and how diseases progress over time. Hair analysis can also reveal exposure to toxins and stress levels by measuring substances stored in the hair over months. The study concludes that hair is a promising tool for personalized healthcare, offering insights into long-term health conditions. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
头发标本在精密医学、法医和环境监测中至关重要,因为它们能够长期保存生化数据。它们的非侵入性收集和长期存储适用性使其成为诊断和调查的理想选择,为健康和暴露记录提供历史见解。在医学上,头发分析提供了长期的生化特征,有助于监测健康状况、营养缺乏、毒素暴露和治疗效果。质谱、色谱和光谱学的进步已将其应用范围扩大到癌症诊断、结核病、艾滋病毒、神经系统疾病和精神健康评估。在法医科学中,头发的抗分解能力和吸收物质的能力有助于识别个人,检测毒品使用和重建犯罪现场。基因组学、蛋白质组学和代谢组学等组学技术通过精确的物质检测和时间重建来提高法医的准确性。尽管有潜力,但诸如头发生长变异性、污染和缺乏标准化技术等挑战限制了头发分析目前的影响。解决这些问题可以促进其在诊断和法医调查中的作用。本文综述了毛发分析在精准医学、传染病、心理健康、压力评估和法医学等方面的最新进展及其应用。
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引用次数: 0
Redox regulation by sulfiredoxin-1: bridging cysteine oxidation and liver disease therapeutics 硫毒毒素-1的氧化还原调节:桥接半胱氨酸氧化和肝脏疾病治疗。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-23 DOI: 10.1038/s12276-025-01563-5
Jong-Won Kim, Mengyun Ke, Donovan Whitfield, Bin Yang, Gu Seob Roh, Wen Xie
Cysteine (Cys) posttranslational modifications play a critical role in regulating protein function, cellular signaling and redox homeostasis in various physiological and pathological conditions. Sulfiredoxin-1 (SRXN1) has emerged as a key regulator of protein redox homeostasis through its involvement in Cys sulfinylation. However, the role of SRXN1 in the pathogenesis of diseases and its therapeutic implications have yet to be fully explored. Beyond its classical function in reactive oxygen species detoxification, SRXN1 also modulates redox-sensitive signaling pathways that govern inflammation, apoptosis and cell survival, making it an essential component of cellular defense against oxidative stress-related damage. Here we highlight the significance of SRXN1 in regulating Cys sulfinylation across a broad spectrum of liver diseases. Furthermore, we emphasize the critical role of SRXN1 in regulating oxidative stress and cellular signaling through its interaction and desulfinylation of target or substrate proteins, both of which are crucial to maintaining cellular function under pathological conditions. Finally, we discuss the potential therapeutic implications of targeting SRXN1 in disease contexts where oxidative stress exacerbates pathological processes. A deeper understanding of SRXN1-mediated redox regulation may offer a novel therapeutic avenue to mitigate Cys oxidation and improve clinical outcomes in various liver disease contexts. Oxidative stress, an imbalance between harmful molecules called reactive oxygen species and the body’s defenses, contributes to many diseases. A key player in managing this stress is a protein called sulfiredoxin 1 (SRXN1). SRXN1 helps to repair proteins damaged by reactive oxygen species, particularly by reversing a process called cysteine sulfinylation, which can impair protein function. This Review explores SRXN1’s role in liver diseases, highlighting its protective effects on hepatocytes under pathological conditions such as acute liver injury, alcoholic liver disease and liver fibrosis. It does this by maintaining redox balance. Researchers used various methods to study SRXN1’s effects, including examining its interactions with other proteins and its impact on cell survival. Results show that, while SRXN1 protects against liver damage, it also aids cancer cell survival in liver cancer. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
在各种生理和病理条件下,半胱氨酸(Cys)翻译后修饰在调节蛋白质功能、细胞信号传导和氧化还原稳态中起着关键作用。Sulfiredoxin-1 (SRXN1)通过参与胱氨酸亚酰化而成为蛋白质氧化还原稳态的关键调节因子。然而,SRXN1在疾病发病机制中的作用及其治疗意义尚未得到充分探讨。除了在活性氧解毒中的经典功能外,SRXN1还调节氧化还原敏感信号通路,控制炎症、凋亡和细胞存活,使其成为细胞防御氧化应激相关损伤的重要组成部分。在这里,我们强调SRXN1在广泛的肝脏疾病中调节胱氨酸亚砜化的重要性。此外,我们强调SRXN1通过其相互作用和靶蛋白或底物蛋白的去硫化在调节氧化应激和细胞信号传导方面的关键作用,这两者对于在病理条件下维持细胞功能至关重要。最后,我们讨论了在氧化应激加剧病理过程的疾病背景下靶向SRXN1的潜在治疗意义。对srxn1介导的氧化还原调控的更深入了解可能为减轻Cys氧化和改善各种肝脏疾病的临床结果提供新的治疗途径。
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引用次数: 0
Exploring mitophagy levels in Drosophila Malpighian tubules unveils the pivotal role of mitophagy in kidney function and diabetic kidney disease 探索果蝇马氏小管的线粒体自噬水平揭示了线粒体自噬在肾脏功能和糖尿病肾病中的关键作用。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-23 DOI: 10.1038/s12276-025-01558-2
Kang-Min Lee, Jihun Kim, Hye Lim Jung, Young Yeon Kim, Jihoon Lee, Yeon-Ju Lee, Eunhee Yoo, Hyi-Seung Lee, Jeanho Yun
Mitophagy has been implicated in kidney function and related diseases. However, a direct analysis of mitophagy in kidney models, including disease models, remains notably lacking. Here we analyzed mitophagy levels in Drosophila Malpighian tubules, a functional analog of the human kidney, using a transgenic model of the engineered mitophagy reporter mt-Keima. We found that mitophagy is highly active in the major cell types of the Malpighian tubules, including renal stem cells, principal cells and stellate cells. Notably, the suppression of mitophagy by genetic downregulation of mitophagy-related genes, such as ATG5 and ULK1, led to a significant decrease in the secretion function of the Malpighian tubules, suggesting that mitophagy is essential for their proper function. Interestingly, a continuous high-sugar diet, which is used as a model for diabetic kidney disease, caused a reduction in mitophagy levels in principal cells before the development of mitochondrial dysfunction and defective secretion. Importantly, stimulation of mitophagy with the recently developed mitophagy inducer PDE701 rescued both mitochondrial dysfunction and defective phenotypes in a diabetic kidney disease model. Our results highlight the pivotal role of mitophagy in kidney function and suggest that modulating mitophagy could be a potential strategy for treating kidney diseases. Mitophagy is a process that removes damaged mitochondria to keep cells healthy. This study looks at how mitophagy works in the kidneys using fruit flies, which have similar kidney-like structures called Malpighian tubules. Here researchers used a special protein called mt-Keima to measure mitophagy in these tubules. They found that mitophagy is crucial for the function of the tubules. When mitophagy was reduced, the tubules did not work well, especially under conditions mimicking diabetic kidney disease (DKD). The study used a high-sugar diet to create a DKD model in flies, which led to decreased mitophagy and kidney dysfunction. However, a new compound called PDE701 increased mitophagy and improved kidney function in these flies. The findings suggest that boosting mitophagy could help treat kidney diseases such as DKD. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
线粒体自噬与肾脏功能及相关疾病有关。然而,对肾脏模型(包括疾病模型)中线粒体自噬的直接分析仍然明显缺乏。在这里,我们分析了果蝇马氏小管(功能类似于人类肾脏)的线粒体自噬水平,使用转基因的线粒体自噬报告基因mt-Keima模型。我们发现有丝分裂在马尔比氏小管的主要细胞类型中高度活跃,包括肾干细胞、主细胞和星状细胞。值得注意的是,通过基因下调线粒体自噬相关基因(如ATG5和ULK1)来抑制线粒体自噬,导致马氏小管分泌功能显著下降,这表明线粒体自噬对其正常功能至关重要。有趣的是,持续的高糖饮食,被用作糖尿病肾病的模型,在线粒体功能障碍和分泌缺陷发展之前,导致主要细胞中线粒体自噬水平降低。重要的是,用最近开发的线粒体自噬诱导剂PDE701刺激线粒体自噬可以挽救糖尿病肾病模型中的线粒体功能障碍和缺陷表型。我们的研究结果强调了线粒体自噬在肾脏功能中的关键作用,并提示调节线粒体自噬可能是治疗肾脏疾病的一种潜在策略。
{"title":"Exploring mitophagy levels in Drosophila Malpighian tubules unveils the pivotal role of mitophagy in kidney function and diabetic kidney disease","authors":"Kang-Min Lee, Jihun Kim, Hye Lim Jung, Young Yeon Kim, Jihoon Lee, Yeon-Ju Lee, Eunhee Yoo, Hyi-Seung Lee, Jeanho Yun","doi":"10.1038/s12276-025-01558-2","DOIUrl":"10.1038/s12276-025-01558-2","url":null,"abstract":"Mitophagy has been implicated in kidney function and related diseases. However, a direct analysis of mitophagy in kidney models, including disease models, remains notably lacking. Here we analyzed mitophagy levels in Drosophila Malpighian tubules, a functional analog of the human kidney, using a transgenic model of the engineered mitophagy reporter mt-Keima. We found that mitophagy is highly active in the major cell types of the Malpighian tubules, including renal stem cells, principal cells and stellate cells. Notably, the suppression of mitophagy by genetic downregulation of mitophagy-related genes, such as ATG5 and ULK1, led to a significant decrease in the secretion function of the Malpighian tubules, suggesting that mitophagy is essential for their proper function. Interestingly, a continuous high-sugar diet, which is used as a model for diabetic kidney disease, caused a reduction in mitophagy levels in principal cells before the development of mitochondrial dysfunction and defective secretion. Importantly, stimulation of mitophagy with the recently developed mitophagy inducer PDE701 rescued both mitochondrial dysfunction and defective phenotypes in a diabetic kidney disease model. Our results highlight the pivotal role of mitophagy in kidney function and suggest that modulating mitophagy could be a potential strategy for treating kidney diseases. Mitophagy is a process that removes damaged mitochondria to keep cells healthy. This study looks at how mitophagy works in the kidneys using fruit flies, which have similar kidney-like structures called Malpighian tubules. Here researchers used a special protein called mt-Keima to measure mitophagy in these tubules. They found that mitophagy is crucial for the function of the tubules. When mitophagy was reduced, the tubules did not work well, especially under conditions mimicking diabetic kidney disease (DKD). The study used a high-sugar diet to create a DKD model in flies, which led to decreased mitophagy and kidney dysfunction. However, a new compound called PDE701 increased mitophagy and improved kidney function in these flies. The findings suggest that boosting mitophagy could help treat kidney diseases such as DKD. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":"57 10","pages":"2364-2375"},"PeriodicalIF":12.9,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s12276-025-01558-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145356655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The emerging landscape of brain glycosylation: from molecular complexity to therapeutic potential 脑糖基化的新前景:从分子复杂性到治疗潜力。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-14 DOI: 10.1038/s12276-025-01560-8
Youngsuk Seo, Ji Eun Park, Jae Young Yu, Boyoung Lee, Jong Hyuk Yoon, Hyun Joo An
Glycosylation functions as a pivotal posttranslational modification in proteins and as a distinct biosynthetic process in lipids. In the brain, it plays essential roles in development, function and homeostasis by modulating protein folding, receptor trafficking and intercellular communication. Although glycans constitute less than 1% of the brain’s mass, their impact is disproportionately profound. Recent technological advances have uncovered the essential contributions of both protein- and lipid-bound glycans, including N-glycans, O-glycans and gangliosides, to brain physiology and disease. Here we explore the emerging landscape of brain glycosylation, highlighting its distinct roles in neurodevelopment, synaptic organization and immune regulation. Aberrant glycosylation has been implicated in neurodegenerative diseases (for example, Alzheimer’s and Parkinson’s), psychiatric disorders (for example, depression and schizophrenia) and neurodevelopmental conditions (for example, autism spectrum disorders, attention deficit hyperactivity disorder and dystroglycanopathies). We summarize recent breakthroughs in glycomics technologies, including glycan enrichment, liquid chromatography–tandem mass spectrometry, MALDI-based imaging mass spectrometry and high-throughput omics, which enable molecular and spatial mapping of brain glycosylation. Artificial-intelligence-driven bioinformatics and multi-omics integration are rapidly opening new avenues for deciphering glycan-mediated regulation in brain health and disease. Together, these developments position brain glycosylation as a transformative frontier in neuroscience, with the potential to yield novel diagnostic biomarkers and therapeutic strategies for complex brain disorders. The human brain is a complex organ with over 100 billion cells, including neurons and glial cells. It controls thoughts, emotions and actions through intricate communication systems. This Review explores glycosylation, a process where sugars attach to proteins and lipids, which is crucial for brain function but not well understood. Researchers have used advanced techniques such as mass spectrometry to study glycosylation in the brain. Studies have shown that glycosylation influences brain development, neuronal communication and disease mechanisms. For example, changes in glycosylation have been associated with Alzheimer’s and Parkinson’s diseases. The study highlights the importance of understanding glycosylation for developing new treatments. The researchers conclude that glycosylation is a key player in brain health and disease. Future research could lead to new diagnostic tools and therapies for brain disorders by focusing on glycosylation patterns. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
糖基化是蛋白质翻译后的关键修饰,也是脂质中独特的生物合成过程。在大脑中,它通过调节蛋白质折叠、受体运输和细胞间通讯,在发育、功能和体内平衡中发挥重要作用。尽管聚糖只占大脑质量的不到1%,但它们的影响却异乎寻常地深远。最近的技术进步揭示了蛋白质和脂质结合的聚糖(包括n-聚糖、o -聚糖和神经节苷)对脑生理和疾病的重要贡献。在这里,我们探索脑糖基化的新兴景观,突出其在神经发育,突触组织和免疫调节中的独特作用。异常的糖基化与神经退行性疾病(例如,阿尔茨海默氏症和帕金森症)、精神疾病(例如,抑郁症和精神分裂症)和神经发育疾病(例如,自闭症谱系障碍、注意缺陷多动障碍和糖代谢异常症)有关。我们总结了糖组学技术的最新突破,包括聚糖富集、液相色谱-串联质谱、基于maldi的成像质谱和高通量组学,这些技术可以实现脑糖基化的分子和空间定位。人工智能驱动的生物信息学和多组学集成正在迅速为破译聚糖介导的大脑健康和疾病调节开辟新的途径。总之,这些发展将脑糖基化定位为神经科学的变革前沿,有可能产生新的诊断生物标志物和复杂脑部疾病的治疗策略。
{"title":"The emerging landscape of brain glycosylation: from molecular complexity to therapeutic potential","authors":"Youngsuk Seo, Ji Eun Park, Jae Young Yu, Boyoung Lee, Jong Hyuk Yoon, Hyun Joo An","doi":"10.1038/s12276-025-01560-8","DOIUrl":"10.1038/s12276-025-01560-8","url":null,"abstract":"Glycosylation functions as a pivotal posttranslational modification in proteins and as a distinct biosynthetic process in lipids. In the brain, it plays essential roles in development, function and homeostasis by modulating protein folding, receptor trafficking and intercellular communication. Although glycans constitute less than 1% of the brain’s mass, their impact is disproportionately profound. Recent technological advances have uncovered the essential contributions of both protein- and lipid-bound glycans, including N-glycans, O-glycans and gangliosides, to brain physiology and disease. Here we explore the emerging landscape of brain glycosylation, highlighting its distinct roles in neurodevelopment, synaptic organization and immune regulation. Aberrant glycosylation has been implicated in neurodegenerative diseases (for example, Alzheimer’s and Parkinson’s), psychiatric disorders (for example, depression and schizophrenia) and neurodevelopmental conditions (for example, autism spectrum disorders, attention deficit hyperactivity disorder and dystroglycanopathies). We summarize recent breakthroughs in glycomics technologies, including glycan enrichment, liquid chromatography–tandem mass spectrometry, MALDI-based imaging mass spectrometry and high-throughput omics, which enable molecular and spatial mapping of brain glycosylation. Artificial-intelligence-driven bioinformatics and multi-omics integration are rapidly opening new avenues for deciphering glycan-mediated regulation in brain health and disease. Together, these developments position brain glycosylation as a transformative frontier in neuroscience, with the potential to yield novel diagnostic biomarkers and therapeutic strategies for complex brain disorders. The human brain is a complex organ with over 100 billion cells, including neurons and glial cells. It controls thoughts, emotions and actions through intricate communication systems. This Review explores glycosylation, a process where sugars attach to proteins and lipids, which is crucial for brain function but not well understood. Researchers have used advanced techniques such as mass spectrometry to study glycosylation in the brain. Studies have shown that glycosylation influences brain development, neuronal communication and disease mechanisms. For example, changes in glycosylation have been associated with Alzheimer’s and Parkinson’s diseases. The study highlights the importance of understanding glycosylation for developing new treatments. The researchers conclude that glycosylation is a key player in brain health and disease. Future research could lead to new diagnostic tools and therapies for brain disorders by focusing on glycosylation patterns. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":"57 10","pages":"2214-2225"},"PeriodicalIF":12.9,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s12276-025-01560-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145294367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
S100A8/9-NLRP3-mediated chronic unresolved inflammation drives cardiac pathologies following invasive pneumococcal disease s100a8 /9- nlrp3介导的慢性未解决炎症驱动侵袭性肺炎球菌病后的心脏病变。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-10 DOI: 10.1038/s12276-025-01552-8
Sultan Tousif, Daniel Minassian, Chao He, Baldeep Singh, Prachi Umbarkar, Arvind Singh Bhati, Mohammed Mohasin, Nathan Erdmann, Min Xie, Palaniappan Sethu, Carlos J. Orihuela, Hind Lal
Streptococcus pneumoniae (Spn) is the leading cause of community-acquired pneumonia (CAP). A quarter of hospitalized patients with CAP experience a major adverse cardiac event (MACE), raising their mortality by four to five times compared with pneumonia alone. Patients with CAP continue to face a significantly greater risk of MACE and cardiovascular-associated death during convalescence. However, the reasons responsible for this remain unclear. To elucidate the molecular mechanism(s) of Spn-induced MACE in convalescence, a mouse model of Spn infection and antibiotic rescue was employed. A marked decline in ejection fraction persisting at least 3 weeks after bacterial eradication with antibiotics was observed. Evidence of enduring cardiac injury was observed at the molecular, biochemical and histology levels. Blood analysis from patients with invasive pneumococcal disease confirmed unresolved inflammation in these individuals. Here we mechanistically identified that S100A8/A9-TLR4-NLRP3-mediated unresolved inflammation drives cardiac pathologies in Spn convalescent mice. This inflammation was central to the cardiac pathology because interventions with broad-spectrum immunosuppressive hydrocortisone or specific inhibitors of S100A9 (paquinimod) essentially rescued the Spn-induced cardiac pathologies. These results provide critical preclinical data and rationale for a clinical investigation into immunosuppressive interventions for managing Spn-mediated cardiac pathologies in convalescence. Hospitalization for community-acquired pneumonia (CAP) can lead to serious heart problems, even after recovery. Researchers explored why this happens. They studied both humans and mice to understand the link between pneumonia and heart problems. The study involved 10 healthy adults and 7 pneumonia patients. Researchers collected blood samples to analyze immune responses. They also used mice to study heart changes after pneumonia. The focus was on inflammation and its role in heart damage. Findings showed that inflammation persists even after the infection clears, leading to heart issues. The study identified a specific inflammatory pathway (S100A8/A9-TLR4-NLRP3) as a key player in this process. The researchers concluded that targeting this inflammation could help prevent heart problems after pneumonia. Future treatments might focus on reducing inflammation to protect the heart in pneumonia survivors.
肺炎链球菌(Spn)是导致社区获得性肺炎(CAP)的主要原因。四分之一的CAP住院患者经历严重心脏不良事件(MACE),与单纯肺炎相比,其死亡率提高了4至5倍。CAP患者在恢复期继续面临更大的MACE和心血管相关死亡风险。然而,造成这种情况的原因尚不清楚。为了阐明Spn诱导的MACE在恢复期的分子机制,我们建立了Spn感染和抗生素抢救的小鼠模型。在用抗生素根除细菌后,射血分数的显著下降持续了至少3周。在分子、生化和组织学水平上观察到持久心脏损伤的证据。侵袭性肺炎球菌疾病患者的血液分析证实这些个体存在未解决的炎症。在这里,我们从机制上确定了S100A8/ a9 - tlr4 - nlrp3介导的未解决的炎症驱动Spn恢复期小鼠的心脏病理。这种炎症是心脏病理的核心,因为广谱免疫抑制剂氢化可的松或S100A9特异性抑制剂(帕喹莫德)的干预基本上挽救了spn诱导的心脏病理。这些结果提供了关键的临床前数据和临床研究的基本原理,免疫抑制干预管理恢复期spn介导的心脏病变。
{"title":"S100A8/9-NLRP3-mediated chronic unresolved inflammation drives cardiac pathologies following invasive pneumococcal disease","authors":"Sultan Tousif, Daniel Minassian, Chao He, Baldeep Singh, Prachi Umbarkar, Arvind Singh Bhati, Mohammed Mohasin, Nathan Erdmann, Min Xie, Palaniappan Sethu, Carlos J. Orihuela, Hind Lal","doi":"10.1038/s12276-025-01552-8","DOIUrl":"10.1038/s12276-025-01552-8","url":null,"abstract":"Streptococcus pneumoniae (Spn) is the leading cause of community-acquired pneumonia (CAP). A quarter of hospitalized patients with CAP experience a major adverse cardiac event (MACE), raising their mortality by four to five times compared with pneumonia alone. Patients with CAP continue to face a significantly greater risk of MACE and cardiovascular-associated death during convalescence. However, the reasons responsible for this remain unclear. To elucidate the molecular mechanism(s) of Spn-induced MACE in convalescence, a mouse model of Spn infection and antibiotic rescue was employed. A marked decline in ejection fraction persisting at least 3 weeks after bacterial eradication with antibiotics was observed. Evidence of enduring cardiac injury was observed at the molecular, biochemical and histology levels. Blood analysis from patients with invasive pneumococcal disease confirmed unresolved inflammation in these individuals. Here we mechanistically identified that S100A8/A9-TLR4-NLRP3-mediated unresolved inflammation drives cardiac pathologies in Spn convalescent mice. This inflammation was central to the cardiac pathology because interventions with broad-spectrum immunosuppressive hydrocortisone or specific inhibitors of S100A9 (paquinimod) essentially rescued the Spn-induced cardiac pathologies. These results provide critical preclinical data and rationale for a clinical investigation into immunosuppressive interventions for managing Spn-mediated cardiac pathologies in convalescence. Hospitalization for community-acquired pneumonia (CAP) can lead to serious heart problems, even after recovery. Researchers explored why this happens. They studied both humans and mice to understand the link between pneumonia and heart problems. The study involved 10 healthy adults and 7 pneumonia patients. Researchers collected blood samples to analyze immune responses. They also used mice to study heart changes after pneumonia. The focus was on inflammation and its role in heart damage. Findings showed that inflammation persists even after the infection clears, leading to heart issues. The study identified a specific inflammatory pathway (S100A8/A9-TLR4-NLRP3) as a key player in this process. The researchers concluded that targeting this inflammation could help prevent heart problems after pneumonia. Future treatments might focus on reducing inflammation to protect the heart in pneumonia survivors.","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":"57 10","pages":"2344-2363"},"PeriodicalIF":12.9,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s12276-025-01552-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145276592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fas apoptotic inhibitor molecule 2 mitigates metabolic dysfunction-associated fatty liver disease through autophagic CRTC2 degradation Fas凋亡抑制剂分子2通过自噬降解CRTC2减轻代谢功能障碍相关的脂肪肝疾病。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-07 DOI: 10.1038/s12276-025-01559-1
Yongjie Yu, Sha Hu, Tuo Zhang, Hongjie Shi, Dajun Li, Yongping Huang, Yu Zhang, Haitao Wang, Yufeng Hu, Hong Yu, Guang-Nian Zhao, Peng Zhang
Lysosomal membrane proteins play fundamental roles in the lysosomal degradation of proteins and are attractive drug targets for metabolic dysfunction-associated fatty liver disease (MAFLD). Fas apoptotic inhibitory molecule 2 (FAIM2), a lysosomal membrane protein, has been recognized as an inhibitor of apoptosis in a variety of diseases. Here we reveal that FAIM2 is an inhibitor of fatty acid synthesis and suppresses MAFLD. FAIM2 protein expression is decreased in MAFLD. Moreover, FAIM2 is degraded by the E3 ubiquitin ligase NEDD4L through the catalysis of K48-linked ubiquitination. High-fat and high-cholesterol diet-induced hepatic steatosis, inflammation and fibrosis are aggravated in Faim2-knockout mice and alleviated in mice with AAV8-mediated FAIM2 overexpression. Furthermore, in hepatocytes, FAIM2 knockout increases the expression of genes related to fatty acid synthesis, while overexpressing FAIM2 exhibits the opposite effect. Mechanistically, FAIM2 directly interacts with CREB-regulated transcription coactivator 2 (CRTC2), a prominent regulator of lipid metabolism, and mediates its degradation through autophagy. Specifically, we find that the N terminus of FAIM2, which interacts with CRTC2 and LC3, is required for autophagic degradation of CRTC2. Collectively, our findings reveal that FAIM2 acts as a fatty acid synthesis inhibitor in MAFLD by promoting the autophagic degradation of CRTC2 and that FAIM2–CRTC2 may be a promising therapeutic target. Metabolic dysfunction-associated fatty liver disease (MAFLD) is a common liver condition affecting many people worldwide. Researchers are looking for new ways to treat MAFLD. A recent study explored the role of a protein called FAIM2 in MAFLD. They found that FAIM2 levels are lower in people with MAFLD, and this protein helps reduce fat buildup in the liver. Researchers used mice and primary hepatocytes to study the function of FAIM2. They discovered that, when FAIM2 is missing, fat and inflammation in the liver increase. However, increasing FAIM2 levels can reduce these issues. FAIM2 works by interacting with another protein, CRTC2, and helps break it down through a process called autophagy. The study suggests that boosting FAIM2 could be a new way to treat MAFLD by reducing fat buildup in the liver. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
溶酶体膜蛋白在蛋白质的溶酶体降解中起着重要作用,是代谢功能障碍相关脂肪肝(MAFLD)的有吸引力的药物靶点。Fas凋亡抑制分子2 (FAIM2)是一种溶酶体膜蛋白,在多种疾病中被认为是细胞凋亡的抑制剂。这里我们发现FAIM2是脂肪酸合成的抑制剂并抑制MAFLD。MAFLD中FAIM2蛋白表达降低。此外,FAIM2被E3泛素连接酶NEDD4L通过k48连锁泛素化催化降解。高脂高胆固醇饮食诱导的肝脂肪变性、炎症和纤维化在FAIM2敲除小鼠中加重,在aav8介导的FAIM2过表达小鼠中减轻。此外,在肝细胞中,FAIM2敲除增加脂肪酸合成相关基因的表达,而过表达FAIM2则表现出相反的效果。在机制上,FAIM2直接与creb调控的转录共激活因子2 (CRTC2)相互作用,CRTC2是脂质代谢的重要调节因子,并通过自噬介导其降解。具体来说,我们发现FAIM2的N端与CRTC2和LC3相互作用,是CRTC2自噬降解所必需的。总之,我们的研究结果表明FAIM2通过促进CRTC2的自噬降解在MAFLD中作为脂肪酸合成抑制剂,FAIM2-CRTC2可能是一个有希望的治疗靶点。
{"title":"Fas apoptotic inhibitor molecule 2 mitigates metabolic dysfunction-associated fatty liver disease through autophagic CRTC2 degradation","authors":"Yongjie Yu, Sha Hu, Tuo Zhang, Hongjie Shi, Dajun Li, Yongping Huang, Yu Zhang, Haitao Wang, Yufeng Hu, Hong Yu, Guang-Nian Zhao, Peng Zhang","doi":"10.1038/s12276-025-01559-1","DOIUrl":"10.1038/s12276-025-01559-1","url":null,"abstract":"Lysosomal membrane proteins play fundamental roles in the lysosomal degradation of proteins and are attractive drug targets for metabolic dysfunction-associated fatty liver disease (MAFLD). Fas apoptotic inhibitory molecule 2 (FAIM2), a lysosomal membrane protein, has been recognized as an inhibitor of apoptosis in a variety of diseases. Here we reveal that FAIM2 is an inhibitor of fatty acid synthesis and suppresses MAFLD. FAIM2 protein expression is decreased in MAFLD. Moreover, FAIM2 is degraded by the E3 ubiquitin ligase NEDD4L through the catalysis of K48-linked ubiquitination. High-fat and high-cholesterol diet-induced hepatic steatosis, inflammation and fibrosis are aggravated in Faim2-knockout mice and alleviated in mice with AAV8-mediated FAIM2 overexpression. Furthermore, in hepatocytes, FAIM2 knockout increases the expression of genes related to fatty acid synthesis, while overexpressing FAIM2 exhibits the opposite effect. Mechanistically, FAIM2 directly interacts with CREB-regulated transcription coactivator 2 (CRTC2), a prominent regulator of lipid metabolism, and mediates its degradation through autophagy. Specifically, we find that the N terminus of FAIM2, which interacts with CRTC2 and LC3, is required for autophagic degradation of CRTC2. Collectively, our findings reveal that FAIM2 acts as a fatty acid synthesis inhibitor in MAFLD by promoting the autophagic degradation of CRTC2 and that FAIM2–CRTC2 may be a promising therapeutic target. Metabolic dysfunction-associated fatty liver disease (MAFLD) is a common liver condition affecting many people worldwide. Researchers are looking for new ways to treat MAFLD. A recent study explored the role of a protein called FAIM2 in MAFLD. They found that FAIM2 levels are lower in people with MAFLD, and this protein helps reduce fat buildup in the liver. Researchers used mice and primary hepatocytes to study the function of FAIM2. They discovered that, when FAIM2 is missing, fat and inflammation in the liver increase. However, increasing FAIM2 levels can reduce these issues. FAIM2 works by interacting with another protein, CRTC2, and helps break it down through a process called autophagy. The study suggests that boosting FAIM2 could be a new way to treat MAFLD by reducing fat buildup in the liver. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":"57 10","pages":"2331-2343"},"PeriodicalIF":12.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s12276-025-01559-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145245677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Author Correction: Ret finger protein deficiency attenuates adipogenesis in male mice with high fat diet-induced obesity 作者更正:Ret指蛋白缺乏可减轻高脂肪饮食引起的肥胖雄性小鼠的脂肪生成。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-06 DOI: 10.1038/s12276-025-01568-0
Yun-Gyeong Lee, Anna Jeong, Yongwoon Lim, Sera Shin, Hosouk Joung, Hye Jung Cho, Su-Jin Lee, Hwang Chan Yu, Hyung-Seok Kim, Kwang-Il Nam, Gwang Hyeon Eom, Byung-Hyun Park, So-Young Park, Duk-Hwa Kwon, Hyun Kook
{"title":"Author Correction: Ret finger protein deficiency attenuates adipogenesis in male mice with high fat diet-induced obesity","authors":"Yun-Gyeong Lee, Anna Jeong, Yongwoon Lim, Sera Shin, Hosouk Joung, Hye Jung Cho, Su-Jin Lee, Hwang Chan Yu, Hyung-Seok Kim, Kwang-Il Nam, Gwang Hyeon Eom, Byung-Hyun Park, So-Young Park, Duk-Hwa Kwon, Hyun Kook","doi":"10.1038/s12276-025-01568-0","DOIUrl":"10.1038/s12276-025-01568-0","url":null,"abstract":"","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":"57 10","pages":"2393-2396"},"PeriodicalIF":12.9,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s12276-025-01568-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145234140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The LUBAC subunit HOIL-1 promotes the progression of HBV-associated hepatocellular carcinoma independently of linear ubiquitination LUBAC亚基HOIL-1独立于线性泛素化促进hbv相关肝细胞癌的进展。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-06 DOI: 10.1038/s12276-025-01556-4
Zheyu Dong, Qiuyue Ye, Yuxin Zhou, Yuqing Shao, Junling Chen, Jianzhong Cai, Yiyan Huang, Jiayue Yang, Yaoting Feng, Liangxing Chen, Libo Tang, Yuchuan Jiang, Peng Chen, Yu Wang, Yongyin Li
The linear ubiquitin chain assembly complex (LUBAC) has been implicated in both cancer progression and viral activity; however, its role in the progression of hepatitis B virus (HBV)-associated hepatocellular carcinoma (HBV-HCC) remains unclear. Here we found that the expression of LUBAC components and Met1-linked ubiquitination was significantly upregulated and associated with poor prognosis in HCC; however, blocking the LUBAC activity with HOIPIN-1 did not affect the malignancy of HCC cells or their sensitivity to sorafenib treatment. Targeting HOIL-1 inhibited the progression of HCC in vitro and in vivo. Interestingly, we found that HOIL-1, but not other LUBAC components, was exclusively upregulated in HBV-HCC. Functionally, HOIL-1 knockdown suppressed tumor growth, metastasis and stemness in HBV-infected HCC cells. Mechanistically, HOIL-1 interacted with HBx, but not other HBV proteins, and facilitated its stabilization by recruiting deubiquitinatinase USP15, thereby reducing HBx K48-linked ubiquitination. Notably, the clinical analysis indicated that the association between high HOIL-1 expression and poor prognosis was evident only in patients with HBV-HCC with high USP15 expression and not in those with low USP15 expression. Collectively, our results demonstrated that HOIL-1 acts as an oncogene to promote HBV-HCC progression independent of LUBAC activity and may serve as a potential therapeutic target for HBV-HCC. Hepatocellular carcinoma (HCC) is a major cause of cancer deaths worldwide, often linked to hepatitis B virus (HBV) infection. Despite vaccines and treatments, HBV remains a key risk factor for HCC. This Article explores how HOIL-1 protein affects HCC progression in HBV-infected patients. Researchers found that HOIL-1, part of a protein complex called LUBAC, is active in HCC tissues. They studied human liver cancer cells and mice to understand HOIL-1’s role. They discovered that HOIL-1 helps stabilize another protein, HBx, which is crucial for HBV-related cancer development. HOIL-1 does this by interacting with an enzyme called USP15, preventing HBx from being broken down. The study shows that reducing HOIL-1 levels can slow down cancer growth and spread in HBV-related HCC. This suggests that targeting HOIL-1 could be a new way to treat this type of liver cancer. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
线性泛素链组装复合物(LUBAC)与癌症进展和病毒活性都有关系;然而,其在乙型肝炎病毒(HBV)相关肝细胞癌(HBV- hcc)进展中的作用尚不清楚。本研究发现,在HCC中,LUBAC组分和met1相关泛素化的表达显著上调,并与预后不良相关;然而,用HOIPIN-1阻断LUBAC活性并不影响HCC细胞的恶性程度或其对索拉非尼治疗的敏感性。在体外和体内,靶向HOIL-1可抑制HCC的进展。有趣的是,我们发现HOIL-1,而不是其他LUBAC成分,在HBV-HCC中完全上调。在功能上,HOIL-1敲低可抑制hbv感染的HCC细胞的肿瘤生长、转移和干细胞性。在机制上,HOIL-1与HBx相互作用,但不与其他HBV蛋白相互作用,并通过募集去泛素化酶USP15促进其稳定,从而减少HBx k48相关的泛素化。值得注意的是,临床分析表明,只有USP15高表达的HBV-HCC患者才有高表达HOIL-1与不良预后的相关性,而USP15低表达的HBV-HCC患者没有高表达HOIL-1与不良预后的相关性。总之,我们的研究结果表明,HOIL-1作为一种癌基因,可以独立于LUBAC活性促进HBV-HCC的进展,并可能作为HBV-HCC的潜在治疗靶点。
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引用次数: 0
Trained immunity induced by DAMPs and LAMPs in chronic inflammatory diseases 慢性炎症性疾病中DAMPs和lamp诱导的训练免疫。
IF 12.9 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-10-01 DOI: 10.1038/s12276-025-01542-w
Hee Young Kim, Won-Woo Lee
The immune system has traditionally been divided into innate and adaptive branches, with immunological memory considered a hallmark of adaptive immunity. However, recent studies reveal that innate immune cells can also exhibit memory-like properties, known as trained immunity. This phenomenon involves the long-term functional reprogramming of innate immune cells following exposure to exogenous or endogenous stimuli, mediated by epigenetic and metabolic changes. Trained immunity enhances responses to subsequent unrelated challenges and serves as a protective mechanism against reinfection. Nonetheless, it may also contribute to the development of chronic inflammatory diseases such as autoimmune disorders, allergies and atherosclerosis. Whereas much of the research has focused on pathogen-associated molecular patterns as inducers of trained immunity, emerging evidence highlights that sterile inflammation, driven by damage-associated molecular patterns and lifestyle-associated molecular patterns, can similarly induce this immune adaptation. Here we examine the molecular mechanisms underlying damage-associated molecular pattern- and lifestyle-associated molecular pattern-induced trained immunity and their roles in chronic inflammation. This Review also discusses central trained immunity, characterized by the durable reprogramming of hematopoietic stem and progenitor cells, and its implications in disease progression. Finally, potential therapeutic strategies targeting metabolic and epigenetic pathways are considered. Understanding noninfectious stimuli-induced trained immunity offers new insights into chronic inflammatory disease management. The immune system has two parts: innate and adaptive immunity. Scientists used to think only adaptive immunity had memory, but recent studies show innate immunity can also remember. Trained immunity involves long-term changes in innate immune cells, such as macrophages, due to vaccines or other stimuli, leading to better responses to future infections. Researchers have found that not just infections but also noninfectious factors such as diet and stress can trigger trained immunity. This Review reviews recent findings on how certain molecules, called damage-associated molecular patterns and lifestyle-associated molecular patterns, can induce trained immunity. These molecules are released from damaged cells or accumulated owing to poor clearance and can cause chronic inflammation, contributing to diseases such as atherosclerosis and chronic kidney disease. The Review concludes that understanding trained immunity could lead to new treatments for chronic inflammatory diseases by targeting these pathways. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
免疫系统传统上分为先天和适应性分支,免疫记忆被认为是适应性免疫的标志。然而,最近的研究表明,先天免疫细胞也可以表现出类似记忆的特性,被称为训练免疫。这种现象涉及先天免疫细胞在暴露于外源性或内源性刺激后,由表观遗传和代谢变化介导的长期功能重编程。经过训练的免疫增强了对随后不相关挑战的反应,并作为防止再感染的保护机制。尽管如此,它也可能导致慢性炎症性疾病的发展,如自身免疫性疾病、过敏和动脉粥样硬化。虽然大部分研究都集中在病原体相关的分子模式作为训练免疫的诱导剂,但新出现的证据强调,由损伤相关的分子模式和生活方式相关的分子模式驱动的无菌炎症同样可以诱导这种免疫适应。在这里,我们研究了损伤相关的分子模式和生活方式相关的分子模式诱导的训练免疫的分子机制及其在慢性炎症中的作用。本综述还讨论了以造血干细胞和祖细胞的持续重编程为特征的中枢训练免疫及其在疾病进展中的意义。最后,考虑了针对代谢和表观遗传途径的潜在治疗策略。了解非感染性刺激诱导的训练免疫为慢性炎症性疾病的管理提供了新的见解。
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