首页 > 最新文献

Metabolism: clinical and experimental最新文献

英文 中文
Leptin physiology and pathophysiology in energy homeostasis, immune function, neuroendocrine regulation and bone health 能量平衡、免疫功能、神经内分泌调节和骨骼健康中的瘦素生理学和病理生理学。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-30 DOI: 10.1016/j.metabol.2024.156056
Konstantinos Stefanakis , Jagriti Upadhyay , Arantxa Ramirez-Cisneros , Nihar Patel , Akshat Sahai , Christos S. Mantzoros
Since its discovery and over the past thirty years, extensive research has significantly expanded our understanding of leptin and its diverse roles in human physiology, pathophysiology and therapeutics. A prototypical adipokine initially identified for its critical function in appetite regulation and energy homeostasis, leptin has been revealed to also exert profound effects on the hypothalamic-pituitary-gonadal, thyroid, adrenal and growth hormone axis, differentially between animals and humans, as well as in regulating immune function. Beyond these roles, leptin plays a pivotal role in significantly affecting bone health by promoting bone formation and regulating bone metabolism both directly and indirectly through its neuroendocrine actions. The diverse actions of leptin are particularly notable in leptin-deficient animal models and in conditions characterized by low circulating leptin levels, such as lipodystrophies and relative energy deficiency. Conversely, the effectiveness of leptin is attenuated in leptin-sufficient states, such as obesity and other high-adiposity conditions associated with hyperleptinemia and leptin tolerance. This review attempts to consolidate 30 years of leptin research with an emphasis on its physiology and pathophysiology in humans, including its promising therapeutic potential. We discuss preclinical and human studies describing the pathophysiology of energy deficiency across organ systems and the significant role of leptin in regulating neuroendocrine, immune, reproductive and bone health. We finally present past proof of concept clinical trials of leptin administration in leptin-deficient subjects that have demonstrated positive neuroendocrine, reproductive, and bone health outcomes, setting the stage for future phase IIb and III randomized clinical trials in these conditions.
自瘦素被发现以来,经过三十多年的广泛研究,我们对瘦素及其在人体生理学、病理生理学和治疗学中的各种作用有了更深入的了解。瘦素是一种典型的脂肪因子,最初因其在食欲调节和能量平衡中的关键功能而被发现,但现在发现它还对下丘脑-垂体-性腺、甲状腺、肾上腺和生长激素轴产生深远影响,在动物和人类之间存在差异,还能调节免疫功能。除了这些作用外,瘦素还通过其神经内分泌作用直接或间接地促进骨形成和调节骨代谢,在显著影响骨骼健康方面发挥着关键作用。瘦素的多种作用在瘦素缺乏的动物模型和循环瘦素水平较低的疾病(如脂肪变性和相对能量缺乏症)中尤为明显。相反,在瘦素充足的状态下,如肥胖和其他与高瘦素血症和瘦素耐受有关的高脂肪状态下,瘦素的作用就会减弱。本综述试图整合 30 年来瘦素研究的成果,重点关注瘦素在人体中的生理和病理生理学作用,包括瘦素的治疗潜力。我们讨论了临床前研究和人体研究,这些研究描述了各器官系统能量缺乏的病理生理学,以及瘦素在调节神经内分泌、免疫、生殖和骨骼健康方面的重要作用。最后,我们介绍了过去在瘦素缺乏的受试者中施用瘦素的概念验证临床试验,这些试验显示了积极的神经内分泌、生殖和骨骼健康结果,为未来在这些条件下进行 IIb 期和 III 期随机临床试验奠定了基础。
{"title":"Leptin physiology and pathophysiology in energy homeostasis, immune function, neuroendocrine regulation and bone health","authors":"Konstantinos Stefanakis ,&nbsp;Jagriti Upadhyay ,&nbsp;Arantxa Ramirez-Cisneros ,&nbsp;Nihar Patel ,&nbsp;Akshat Sahai ,&nbsp;Christos S. Mantzoros","doi":"10.1016/j.metabol.2024.156056","DOIUrl":"10.1016/j.metabol.2024.156056","url":null,"abstract":"<div><div>Since its discovery and over the past thirty years, extensive research has significantly expanded our understanding of leptin and its diverse roles in human physiology, pathophysiology and therapeutics. A prototypical adipokine initially identified for its critical function in appetite regulation and energy homeostasis, leptin has been revealed to also exert profound effects on the hypothalamic-pituitary-gonadal, thyroid, adrenal and growth hormone axis, differentially between animals and humans, as well as in regulating immune function. Beyond these roles, leptin plays a pivotal role in significantly affecting bone health by promoting bone formation and regulating bone metabolism both directly and indirectly through its neuroendocrine actions. The diverse actions of leptin are particularly notable in leptin-deficient animal models and in conditions characterized by low circulating leptin levels, such as lipodystrophies and relative energy deficiency. Conversely, the effectiveness of leptin is attenuated in leptin-sufficient states, such as obesity and other high-adiposity conditions associated with hyperleptinemia and leptin tolerance. This review attempts to consolidate 30 years of leptin research with an emphasis on its physiology and pathophysiology in humans, including its promising therapeutic potential. We discuss preclinical and human studies describing the pathophysiology of energy deficiency across organ systems and the significant role of leptin in regulating neuroendocrine, immune, reproductive and bone health. We finally present past proof of concept clinical trials of leptin administration in leptin-deficient subjects that have demonstrated positive neuroendocrine, reproductive, and bone health outcomes, setting the stage for future phase IIb and III randomized clinical trials in these conditions.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156056"},"PeriodicalIF":10.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142558257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of weight loss on fat-free mass, muscle, bone and hematopoiesis health: Implications for emerging pharmacotherapies aiming at fat reduction and lean mass preservation 减肥对去脂质量、肌肉、骨骼和造血健康的影响:对旨在减少脂肪和保持瘦体重的新兴药物疗法的影响。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-30 DOI: 10.1016/j.metabol.2024.156057
Konstantinos Stefanakis , Michail Kokkorakis , Christos S. Mantzoros
Similar to bariatric surgery, incretin receptor agonists have revolutionized the treatment of obesity, achieving up to 15–25 % weight loss in many patients, i.e., at a rate approaching that achieved with bariatric surgery. However, over 25 % of total weight lost from both surgery and pharmacotherapy typically comes from fat-free mass, including skeletal muscle mass, which is often overlooked and can impair metabolic health and increase the risk of subsequent sarcopenic obesity. Loss of muscle and bone as well as anemia can compromise physical function, metabolic rate, and overall health, especially in older adults. The myostatin-activin-follistatin-inhibin system, originally implicated in reproductive function and subsequently muscle regulation, appears to be crucial for muscle and bone maintenance during weight loss. Activins and myostatin promote muscle degradation, while follistatins inhibit their activity in states of negative energy balance, thereby preserving lean mass. Novel compounds in the pipeline, such as Bimagrumab, Trevogrumab, and Garetosmab—which inhibit activin and myostatin signaling—have demonstrated promise in preventing muscle loss while promoting fat loss. Either alone or combined with incretin receptor agonists, these medications may enhance fat loss while preserving or even increasing muscle and bone mass, offering a potential solution for improving body composition and metabolic health during significant weight loss. Since this dual therapeutic approach could help address the challenges of muscle and bone loss during weight loss, well-designed studies are needed to optimize these strategies and assess long-term benefits. For the time being, considerations like advanced age and prefrailty may affect the choice of suitable candidates in clinical practice for current and emerging anti-obesity medications due to the associated risk of sarcopenia.
内分泌受体激动剂彻底改变了肥胖症的治疗方法,许多患者的体重可减轻 15%-25%,即接近减肥手术的减重率。然而,在手术和药物治疗所减轻的总重量中,超过 25% 的体重通常来自去脂质量,包括骨骼肌质量,而骨骼肌质量往往被忽视,会损害新陈代谢健康,并增加随后发生肌肉疏松性肥胖的风险。肌肉和骨骼的流失以及贫血会损害身体机能、新陈代谢率和整体健康,尤其是老年人。肌节蛋白-活性蛋白-软骨素-抑制蛋白系统最初与生殖功能有关,后来又与肌肉调节有关,而在减肥期间,该系统似乎对肌肉和骨骼的维持至关重要。肌动蛋白和肌生成素会促进肌肉退化,而在能量负平衡状态下,软骨素会抑制它们的活性,从而保持瘦肉质量。Bimagrumab、Trevogrumab 和 Garetosmab 等正在研发中的新型化合物能抑制活化素和肌节蛋白的信号传导,在防止肌肉减少的同时促进脂肪减少。无论是单独使用还是与增量蛋白受体激动剂联合使用,这些药物都可能在保持甚至增加肌肉和骨骼质量的同时促进脂肪减少,从而为在体重大幅下降期间改善身体成分提供了一种潜在的解决方案。由于这种双重治疗方法有助于解决减肥期间肌肉和骨骼流失的难题,因此需要进行精心设计的研究,以优化这些策略并评估其长期益处。就目前而言,由于肌肉疏松症的相关风险,高龄和体质虚弱等因素可能会影响临床实践中对现有和新出现的抗肥胖药物合适候选者的选择。
{"title":"The impact of weight loss on fat-free mass, muscle, bone and hematopoiesis health: Implications for emerging pharmacotherapies aiming at fat reduction and lean mass preservation","authors":"Konstantinos Stefanakis ,&nbsp;Michail Kokkorakis ,&nbsp;Christos S. Mantzoros","doi":"10.1016/j.metabol.2024.156057","DOIUrl":"10.1016/j.metabol.2024.156057","url":null,"abstract":"<div><div>Similar to bariatric surgery, incretin receptor agonists have revolutionized the treatment of obesity, achieving up to 15–25 % weight loss in many patients, i.e., at a rate approaching that achieved with bariatric surgery. However, over 25 % of total weight lost from both surgery and pharmacotherapy typically comes from fat-free mass, including skeletal muscle mass, which is often overlooked and can impair metabolic health and increase the risk of subsequent sarcopenic obesity. Loss of muscle and bone as well as anemia can compromise physical function, metabolic rate, and overall health, especially in older adults. The myostatin-activin-follistatin-inhibin system, originally implicated in reproductive function and subsequently muscle regulation, appears to be crucial for muscle and bone maintenance during weight loss. Activins and myostatin promote muscle degradation, while follistatins inhibit their activity in states of negative energy balance, thereby preserving lean mass. Novel compounds in the pipeline, such as Bimagrumab, Trevogrumab, and Garetosmab—which inhibit activin and myostatin signaling—have demonstrated promise in preventing muscle loss while promoting fat loss. Either alone or combined with incretin receptor agonists, these medications may enhance fat loss while preserving or even increasing muscle and bone mass, offering a potential solution for improving body composition and metabolic health during significant weight loss. Since this dual therapeutic approach could help address the challenges of muscle and bone loss during weight loss, well-designed studies are needed to optimize these strategies and assess long-term benefits. For the time being, considerations like advanced age and prefrailty may affect the choice of suitable candidates in clinical practice for current and emerging anti-obesity medications due to the associated risk of sarcopenia.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156057"},"PeriodicalIF":10.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142558258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evidence from clinical studies of leptin: current and future clinical applications in humans 瘦素临床研究的证据:目前和未来在人体中的临床应用
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-28 DOI: 10.1016/j.metabol.2024.156053
Nikolaos Perakakis , Christos S. Mantzoros
Leptin has been established as the prototype adipose tissue secreted hormone and as a major regulator of several human physiology functions. Here, we are primarily reviewing the findings from studies in humans involving leptin administration. We are describing the metabolic, endocrine and immunologic effects of leptin replacement in conditions of leptin deficiency, such as short-term fasting in healthy individuals, relative energy deficiency in sports (REDS), congenital leptin deficiency (CLD), generalized (GL) and partial lipodystrophy (PL), HIV-associated lipodystrophy (HIV-L) and of leptin treatment in conditions of leptin excess (common obesity, type 2 diabetes, steatotic liver disease). We are comparing the results with the findings from preclinical models and present the main conclusions regarding the role of leptin in human physiology, pathophysiology and therapeutics. We conclude that, in conditions of energy deficiency, leptin substitution effectively reduces body weight and fat mass through reduction of appetite, it improves hypertriglyceridemia, insulin resistance and hepatic steatosis (especially in GL and PL), it restores neuroendocrine function (especially the gonadotropic axis), it regulates adaptive immune system cell populations and it improves bone health. On the contrary, leptin treatment in conditions of leptin excess, such as common obesity and type 2 diabetes, does not improve any metabolic abnormalities. Strategies to overcome leptin tolerance/resistance in obesity and type 2 diabetes have provided promising results in animal studies, which should though be tested in humans in randomized clinical trials.
瘦素已被确定为脂肪组织分泌激素的原型,也是多种人体生理功能的主要调节因子。在此,我们将主要回顾在人体中施用瘦素的研究结果。我们将描述在瘦素缺乏的情况下,如健康人短期禁食、运动中相对能量缺乏(REDS)、先天性瘦素缺乏(CLD)、全身性(GL)和部分性脂肪营养不良(PL)、艾滋病相关性脂肪营养不良(HIV-L),以及在瘦素过剩的情况下(常见肥胖、2 型糖尿病、脂肪肝),瘦素替代对代谢、内分泌和免疫学的影响。我们将这些结果与临床前模型的研究结果进行了比较,并就瘦素在人体生理学、病理生理学和治疗学中的作用提出了主要结论。我们得出的结论是,在能量缺乏的条件下,瘦素替代品可通过降低食欲有效减轻体重和脂肪量,改善高甘油三酯血症、胰岛素抵抗和肝脂肪变性(尤其是在 GL 和 PL 中),恢复神经内分泌功能(尤其是促性腺轴),调节适应性免疫系统细胞群,改善骨骼健康。相反,在瘦素过剩的情况下,如普通肥胖症和 2 型糖尿病,瘦素治疗并不能改善任何代谢异常。在动物实验中,克服肥胖症和 2 型糖尿病患者瘦素耐受性/抵抗性的策略取得了令人鼓舞的结果,但这些结果应在随机临床试验中对人体进行测试。
{"title":"Evidence from clinical studies of leptin: current and future clinical applications in humans","authors":"Nikolaos Perakakis ,&nbsp;Christos S. Mantzoros","doi":"10.1016/j.metabol.2024.156053","DOIUrl":"10.1016/j.metabol.2024.156053","url":null,"abstract":"<div><div>Leptin has been established as the prototype adipose tissue secreted hormone and as a major regulator of several human physiology functions. Here, we are primarily reviewing the findings from studies in humans involving leptin administration. We are describing the metabolic, endocrine and immunologic effects of leptin replacement in conditions of leptin deficiency, such as short-term fasting in healthy individuals, relative energy deficiency in sports (RED<img>S), congenital leptin deficiency (CLD), generalized (GL) and partial lipodystrophy (PL), HIV-associated lipodystrophy (HIV-L) and of leptin treatment in conditions of leptin excess (common obesity, type 2 diabetes, steatotic liver disease). We are comparing the results with the findings from preclinical models and present the main conclusions regarding the role of leptin in human physiology, pathophysiology and therapeutics. We conclude that, in conditions of energy deficiency, leptin substitution effectively reduces body weight and fat mass through reduction of appetite, it improves hypertriglyceridemia, insulin resistance and hepatic steatosis (especially in GL and PL), it restores neuroendocrine function (especially the gonadotropic axis), it regulates adaptive immune system cell populations and it improves bone health. On the contrary, leptin treatment in conditions of leptin excess, such as common obesity and type 2 diabetes, does not improve any metabolic abnormalities. Strategies to overcome leptin tolerance/resistance in obesity and type 2 diabetes have provided promising results in animal studies, which should though be tested in humans in randomized clinical trials.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156053"},"PeriodicalIF":10.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Advances in body composition and gender differences in susceptibility to frailty syndrome: Role of osteosarcopenic obesity 身体成分的变化和易患虚弱综合征的性别差异:骨质疏松性肥胖的作用
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-28 DOI: 10.1016/j.metabol.2024.156052
Rosy Conforto , Valeria Rizzo , Raffaella Russo , Elisa Mazza , Samantha Maurotti , Carmelo Pujia , Elena Succurro , Franco Arturi , Yvelise Ferro , Angela Sciacqua , Arturo Pujia , Tiziana Montalcini
There is general consensus that an improper diet negatively impacts health and that nutrition is a primary tool for the prevention of non-communicable diseases. Unfortunately, the importance of studying body composition, which can reveal early predictors of gender-related diseases, is still not well understood in this context. Currently, individuals are still classified as obese based solely on their body mass index, without considering the amount of fat, its distribution, and the quantity of muscle and bone mass. In this regard, the body composition phenotype defined as “osteosarcopenic obesity” affects approximately 6–41 % of postmenopausal women, with prevalence increasing with age due to the hormonal and metabolic changes that occur during this period. This particular phenotype arises from the strong relationship between visceral fat, muscle, bone, and gut microbiota and predispose postmenopausal women to frailty. Frailty is a complex clinical phenomenon with significant care and economic implications for our society. Recent studies suggest that women have a higher prevalence of frailty syndrome and its individual components, such as osteoporosis, fractures and sarcopenia, compared to men. Here, we provide a comprehensive overview of recent advances regarding the impact of gender on body composition and frailty. Furthermore, we reflect on the crucial importance of personalized nutritional interventions, with a focus on reducing visceral fat, increasing protein intake and optimizing vitamin D levels. A review of the scientific literature on this topic highlights the importance of studying body composition for a personalized and gender-specific approach to nutrition and dietetics, in order to identify frailty syndrome early and establish personalized treatments. This new method of researching disease predictors could likely help clarify the controversial results of studies on vitamin D, calcium and proteins, translate into practical wellness promotion across diverse elderly populations.
人们普遍认为,不当的饮食会对健康产生负面影响,营养是预防非传染性疾病的主要工具。遗憾的是,研究身体成分的重要性仍未得到充分认识,而身体成分可以揭示与性别相关疾病的早期预测因素。目前,人们仍然仅仅根据体重指数将人归类为肥胖,而不考虑脂肪的数量、分布以及肌肉和骨骼的数量。在这方面,被定义为 "骨质疏松性肥胖症 "的身体成分表型影响着大约 6%-41% 的绝经后妇女,随着年龄的增长,患病率也在增加,原因是这一时期的荷尔蒙和新陈代谢发生了变化。这种特殊的表型源于内脏脂肪、肌肉、骨骼和肠道微生物群之间的密切关系,并使绝经后妇女易患虚弱症。虚弱是一种复杂的临床现象,对我们社会的护理和经济都有重大影响。最近的研究表明,与男性相比,女性的虚弱综合征及其各个组成部分(如骨质疏松症、骨折和肌肉疏松症)的发病率更高。在此,我们将全面概述有关性别对身体组成和虚弱的影响的最新进展。此外,我们还反思了个性化营养干预的至关重要性,重点是减少内脏脂肪、增加蛋白质摄入量和优化维生素 D 水平。对有关这一主题的科学文献进行的回顾强调了研究身体成分对于营养和饮食学的个性化和性别特异性方法的重要性,以便及早发现虚弱综合症并制定个性化的治疗方法。这种研究疾病预测因素的新方法可能有助于澄清有关维生素 D、钙和蛋白质的研究中存在争议的结果,并将其转化为促进不同老年人群健康的实用方法。
{"title":"Advances in body composition and gender differences in susceptibility to frailty syndrome: Role of osteosarcopenic obesity","authors":"Rosy Conforto ,&nbsp;Valeria Rizzo ,&nbsp;Raffaella Russo ,&nbsp;Elisa Mazza ,&nbsp;Samantha Maurotti ,&nbsp;Carmelo Pujia ,&nbsp;Elena Succurro ,&nbsp;Franco Arturi ,&nbsp;Yvelise Ferro ,&nbsp;Angela Sciacqua ,&nbsp;Arturo Pujia ,&nbsp;Tiziana Montalcini","doi":"10.1016/j.metabol.2024.156052","DOIUrl":"10.1016/j.metabol.2024.156052","url":null,"abstract":"<div><div>There is general consensus that an improper diet negatively impacts health and that nutrition is a primary tool for the prevention of non-communicable diseases. Unfortunately, the importance of studying body composition, which can reveal early predictors of gender-related diseases, is still not well understood in this context. Currently, individuals are still classified as obese based solely on their body mass index, without considering the amount of fat, its distribution, and the quantity of muscle and bone mass. In this regard, the body composition phenotype defined as “osteosarcopenic obesity” affects approximately 6–41 % of postmenopausal women, with prevalence increasing with age due to the hormonal and metabolic changes that occur during this period. This particular phenotype arises from the strong relationship between visceral fat, muscle, bone, and gut microbiota and predispose postmenopausal women to frailty<del>.</del> Frailty is a complex clinical phenomenon with significant care and economic implications for our society. Recent studies suggest that women have a higher prevalence of frailty syndrome and its individual components, such as osteoporosis, fractures and sarcopenia, compared to men. Here, we provide a comprehensive overview of recent advances regarding the impact of gender on body composition and frailty. Furthermore, we reflect on the crucial importance of personalized nutritional interventions, with a focus on reducing visceral fat, increasing protein intake and optimizing vitamin D levels. A review of the scientific literature on this topic highlights the importance of studying body composition for a personalized and gender-specific approach to nutrition and dietetics, in order to identify frailty syndrome early and establish personalized treatments. This new method of researching disease predictors could likely help clarify the controversial results of studies on vitamin D, calcium and proteins, translate into practical wellness promotion across diverse elderly populations.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156052"},"PeriodicalIF":10.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
CHK1 attenuates cardiac dysfunction via suppressing SIRT1-ubiquitination CHK1 通过抑制 SIRT1 泛素化减轻心脏功能障碍
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-24 DOI: 10.1016/j.metabol.2024.156048
Tong-Tong Yang , Liu-Hua Zhou , Ling-Feng Gu , Ling-Ling Qian , Yu-Lin Bao , Peng Jing , Jia-Teng Sun , Chong Du , Tian-Kai Shan , Si-Bo Wang , Wen-Jing Wang , Jia-Yi Chen , Ze-Mu Wang , Hao Wang , Qi-Ming Wang , Ru-Xing Wang , Lian-Sheng Wang

Background

Mitochondrial dysfunction is linked to myocardial ischemia-reperfusion (I/R) injury. Checkpoint kinase 1 (CHK1) could facilitate cardiomyocyte proliferation, however, its role on mitochondrial function in I/R injury remains unknown.

Methods

To investigate the role of CHK1 on mitochondrial function following I/R injury, cardiomyocyte-specific knockout/overexpression mouse models were generated. Adult mouse cardiomyocytes (AMCMs) were isolated for in vitro study. Mass spectrometry-proteomics analysis and protein co-immunoprecipitation assays were conducted to dissect the molecular mechanism.

Results

CHK1 was downregulated in myocardium post I/R and AMCMs post oxygen-glucose deprivation/re‑oxygenation (OGD/R). In vivo, CHK1 overexpression protected against I/R induced cardiac dysfunction, while heterogenous CHK1 knockout exacerbated cardiomyopathy. In vitro, CHK1 inhibited OGD/R-induced cardiomyocyte apoptosis and bolstered cardiomyocyte survival. Mechanistically, CHK1 attenuated oxidative stress and preserved mitochondrial metabolism in cardiomyocytes under I/R. Moreover, disrupted mitochondrial homeostasis in I/R myocardium was restored by CHK1 through the promotion of mitochondrial biogenesis and mitophagy. Through mass spectrometry analysis following co-immunoprecipitation, SIRT1 was identified as a direct target of CHK1. The 266–390 domain of CHK1 interacted with the 160–583 domain of SIRT1. Importantly, CHK1 phosphorylated SIRT1 at Thr530 residue, thereby inhibiting SMURF2-mediated degradation of SIRT1. The role of CHK1 in maintaining mitochondrial dynamics control and myocardial protection is abolished by SIRT1 inhibition, while inactivated mutation of SIRT1 Thr530 fails to reverse the impaired mitochondrial dynamics following CHK1 knockdown. CHK1 Δ390 amino acids (aa) mutant functioned similarly to full-length CHK1 in scavenging ROS and maintaining mitochondrial dynamics. Consistently, cardiac-specific SIRT1 knockdown attenuated the protective role of CHK1 in I/R injury.

Conclusions

Our findings revealed that CHK1 mitigates I/R injury and restores mitochondrial dynamics in cardiomyocytes through a SIRT1-dependent mechanism.
背景:线粒体功能障碍与心肌缺血再灌注(I/R)损伤有关。检查点激酶 1(CHK1)可促进心肌细胞增殖,但它在 I/R 损伤中对线粒体功能的作用仍不清楚:方法:为了研究 I/R 损伤后 CHK1 对线粒体功能的作用,我们建立了心肌细胞特异性基因敲除/表达小鼠模型。分离成年小鼠心肌细胞(AMCMs)进行体外研究。通过质谱-蛋白质组学分析和蛋白质共沉淀实验来揭示其分子机制:结果:CHK1在I/R后的心肌和氧-葡萄糖剥夺/再氧合(OGD/R)后的AMCMs中下调。在体内,CHK1 的过表达可防止 I/R 引起的心脏功能障碍,而异源 CHK1 敲除会加重心肌病。在体外,CHK1 可抑制 OGD/R 诱导的心肌细胞凋亡,提高心肌细胞存活率。从机理上讲,CHK1 可减轻氧化应激,保护 I/R 条件下心肌细胞的线粒体代谢。此外,CHK1 还通过促进线粒体生物生成和有丝分裂来恢复 I/R 心肌中被破坏的线粒体平衡。通过共免疫沉淀后的质谱分析,SIRT1 被确定为 CHK1 的直接靶标。CHK1 的 266-390 结构域与 SIRT1 的 160-583 结构域相互作用。重要的是,CHK1 在 Thr530 残基上磷酸化了 SIRT1,从而抑制了 SMURF2 介导的 SIRT1 降解。抑制 SIRT1 会取消 CHK1 在维持线粒体动力学控制和心肌保护方面的作用,而 SIRT1 Thr530 的失活突变无法逆转 CHK1 敲除后线粒体动力学受损的情况。CHK1 Δ390氨基酸(aa)突变体在清除ROS和维持线粒体动力学方面的功能与全长CHK1相似。同样,心脏特异性 SIRT1 基因敲除削弱了 CHK1 在 I/R 损伤中的保护作用:我们的研究结果表明,CHK1 可通过 SIRT1 依赖性机制减轻 I/R 损伤并恢复心肌细胞线粒体的活力。
{"title":"CHK1 attenuates cardiac dysfunction via suppressing SIRT1-ubiquitination","authors":"Tong-Tong Yang ,&nbsp;Liu-Hua Zhou ,&nbsp;Ling-Feng Gu ,&nbsp;Ling-Ling Qian ,&nbsp;Yu-Lin Bao ,&nbsp;Peng Jing ,&nbsp;Jia-Teng Sun ,&nbsp;Chong Du ,&nbsp;Tian-Kai Shan ,&nbsp;Si-Bo Wang ,&nbsp;Wen-Jing Wang ,&nbsp;Jia-Yi Chen ,&nbsp;Ze-Mu Wang ,&nbsp;Hao Wang ,&nbsp;Qi-Ming Wang ,&nbsp;Ru-Xing Wang ,&nbsp;Lian-Sheng Wang","doi":"10.1016/j.metabol.2024.156048","DOIUrl":"10.1016/j.metabol.2024.156048","url":null,"abstract":"<div><h3>Background</h3><div>Mitochondrial dysfunction is linked to myocardial ischemia-reperfusion (I/R) injury. Checkpoint kinase 1 (CHK1) could facilitate cardiomyocyte proliferation, however, its role on mitochondrial function in I/R injury remains unknown.</div></div><div><h3>Methods</h3><div>To investigate the role of CHK1 on mitochondrial function following I/R injury, cardiomyocyte-specific knockout/overexpression mouse models were generated. Adult mouse cardiomyocytes (AMCMs) were isolated for <em>in vitro</em> study. Mass spectrometry-proteomics analysis and protein co-immunoprecipitation assays were conducted to dissect the molecular mechanism.</div></div><div><h3>Results</h3><div>CHK1 was downregulated in myocardium post I/R and AMCMs post oxygen-glucose deprivation/re‑oxygenation (OGD/R). <em>In vivo</em>, CHK1 overexpression protected against I/R induced cardiac dysfunction, while heterogenous CHK1 knockout exacerbated cardiomyopathy. <em>In vitro</em>, CHK1 inhibited OGD/R-induced cardiomyocyte apoptosis and bolstered cardiomyocyte survival. Mechanistically, CHK1 attenuated oxidative stress and preserved mitochondrial metabolism in cardiomyocytes under I/R. Moreover, disrupted mitochondrial homeostasis in I/R myocardium was restored by CHK1 through the promotion of mitochondrial biogenesis and mitophagy. Through mass spectrometry analysis following co-immunoprecipitation, SIRT1 was identified as a direct target of CHK1. The 266–390 domain of CHK1 interacted with the 160–583 domain of SIRT1. Importantly, CHK1 phosphorylated SIRT1 at Thr530 residue, thereby inhibiting SMURF2-mediated degradation of SIRT1. The role of CHK1 in maintaining mitochondrial dynamics control and myocardial protection is abolished by SIRT1 inhibition, while inactivated mutation of SIRT1 Thr530 fails to reverse the impaired mitochondrial dynamics following CHK1 knockdown. CHK1 Δ390 amino acids (aa) mutant functioned similarly to full-length CHK1 in scavenging ROS and maintaining mitochondrial dynamics. Consistently, cardiac-specific SIRT1 knockdown attenuated the protective role of CHK1 in I/R injury.</div></div><div><h3>Conclusions</h3><div>Our findings revealed that CHK1 mitigates I/R injury and restores mitochondrial dynamics in cardiomyocytes through a SIRT1-dependent mechanism.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"162 ","pages":"Article 156048"},"PeriodicalIF":10.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ZBED3 exacerbates hyperglycemia by promoting hepatic gluconeogenesis through CREB signaling ZBED3 通过 CREB 信号促进肝脏葡萄糖生成,从而加剧高血糖。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-24 DOI: 10.1016/j.metabol.2024.156049
Yuan-yuan Luo , Chang-shun Ruan , Fu-zhen Zhao , Min Yang , Wei Cui , Xi Cheng , Xiao-he Luo , Xian-xiang Zhang , Cheng Zhang

Background

Elevated hepatic glucose production (HGP) is a prominent manifestation of impaired hepatic glucose metabolism in individuals with diabetes. Increased hepatic gluconeogenesis plays a pivotal role in the dysregulation of hepatic glucose metabolism and contributes significantly to fasting hyperglycemia in diabetes. Previous studies have identified zinc-finger BED domain-containing 3 (ZBED3) as a risk gene for type 2 diabetes (T2DM), and its single nucleotide polymorphism (SNPs) is closely associated with the fasting blood glucose level, suggesting a potential correlation between ZBED3 and the onset of diabetes. This study primarily explores the effect of ZBED3 on hepatic gluconeogenesis and analyzes the relevant signaling pathways that regulate hepatic gluconeogenesis.

Methods

The expression level of ZBED3 was assessed in the liver of insulin-resistant (IR)-related disease. RNA-seq and bioinformatics analyses were employed to examine the ZBED3-related pathway that modulated HGP. To investigate the role of ZBED3 in hepatic gluconeogenesis, the expression of ZBED3 was manipulated by upregulation or silencing using adeno-associated virus (AAV) in mouse primary hepatocytes (MPHs) and HHL-5 cells. In vivo, hepatocyte-specific ZBED3 knockout mice were generated. Moreover, AAV8 was employed to achieve hepatocyte-specific overexpression and knockdown of ZBED3 in C57BL/6 and db/db mice. Immunoprecipitation and mass spectrometry (IP-MS) analyses were employed to identify proteins that interacted with ZBED3. Co-immunoprecipitation (co-IP), glutathione S-transferase (GST) - pulldown, and dual-luciferase reporter assays were conducted to further elucidate the underlying mechanism of ZBED3 in regulating hepatic gluconeogenesis.

Results

The expression of ZBED3 in the liver of IR-related disease models was found to be increased. Under the stimulation of glucagon, ZBED3 promoted the expression of hepatic gluconeogenesis-related genes PGC1A, PCK1, G6PC, thereby increasing HGP. Consistently, the rate of hepatic gluconeogenesis was found to be elevated in mice with hepatocyte-specific overexpression of ZBED3 and decreased in those with ZBED3 knockout. Additionally, the knockdown of ZBED3 in the liver of db/db mice resulted in a reduction in hepatic gluconeogenesis. Moreover, the study revealed that ZBED3 facilitated the nuclear translocation of protein arginine methyltransferases 5 (PRMT5) to influence the regulation of PRMT5-mediated symmetrical dimethylation of arginine (s-DMA) of cyclic adenosine monophosphate (cAMP) response element binding protein (CREB), which in turn affects the phosphorylation of CREB and ultimately promotes HGP.

Conclusions

This study indicates that ZBED3 promotes hepatic gluconeogenesis and serves as a critical regulator of the progression of diabetes.
背景:肝糖生成(HGP)升高是糖尿病患者肝糖代谢受损的一个突出表现。肝糖生成增加在肝糖代谢失调中起着关键作用,是导致糖尿病患者空腹高血糖的重要原因。以往的研究发现,含锌指BED结构域3(ZBED3)是2型糖尿病(T2DM)的风险基因,其单核苷酸多态性(SNPs)与空腹血糖水平密切相关,提示ZBED3与糖尿病发病之间存在潜在的相关性。本研究主要探讨ZBED3对肝糖原生成的影响,并分析调控肝糖原生成的相关信号通路:方法:评估胰岛素抵抗(IR)相关疾病患者肝脏中ZBED3的表达水平。方法:评估 ZBED3 在胰岛素抵抗(IR)相关疾病的肝脏中的表达水平,采用 RNA-seq 和生物信息学分析来研究调节 HGP 的 ZBED3 相关通路。为了研究ZBED3在肝糖原生成中的作用,研究人员使用腺相关病毒(AAV)通过上调或沉默ZBED3在小鼠原代肝细胞(MPHs)和HHL-5细胞中的表达。在体内,产生了肝细胞特异性 ZBED3 基因敲除小鼠。此外,还利用 AAV8 在 C57BL/6 和 db/db 小鼠中实现了肝细胞特异性 ZBED3 的过表达和基因敲除。免疫沉淀和质谱分析(IP-MS)被用来鉴定与ZBED3相互作用的蛋白质。通过共免疫沉淀(co-IP)、谷胱甘肽 S-转移酶(GST)下拉和双荧光素酶报告实验进一步阐明了 ZBED3 调节肝糖原生成的内在机制:结果:发现ZBED3在红外相关疾病模型肝脏中的表达增加。在胰高血糖素的刺激下,ZBED3能促进肝糖生成相关基因PGC1A、PCK1、G6PC的表达,从而增加HGP。同样,研究发现肝细胞特异性过表达 ZBED3 的小鼠肝糖原生成率升高,而 ZBED3 基因敲除的小鼠肝糖原生成率降低。此外,在 db/db 小鼠肝脏中敲除 ZBED3 会导致肝糖生成减少。此外,研究还发现,ZBED3促进了蛋白精氨酸甲基转移酶5(PRMT5)的核转位,从而影响了PRMT5介导的环磷酸腺苷(cAMP)反应元件结合蛋白(CREB)的精氨酸对称二甲基化(s-DMA)的调控,进而影响了CREB的磷酸化,最终促进了HGP的发生:本研究表明,ZBED3 促进肝糖原生成,是糖尿病进展的关键调节因子。
{"title":"ZBED3 exacerbates hyperglycemia by promoting hepatic gluconeogenesis through CREB signaling","authors":"Yuan-yuan Luo ,&nbsp;Chang-shun Ruan ,&nbsp;Fu-zhen Zhao ,&nbsp;Min Yang ,&nbsp;Wei Cui ,&nbsp;Xi Cheng ,&nbsp;Xiao-he Luo ,&nbsp;Xian-xiang Zhang ,&nbsp;Cheng Zhang","doi":"10.1016/j.metabol.2024.156049","DOIUrl":"10.1016/j.metabol.2024.156049","url":null,"abstract":"<div><h3>Background</h3><div>Elevated hepatic glucose production (HGP) is a prominent manifestation of impaired hepatic glucose metabolism in individuals with diabetes. Increased hepatic gluconeogenesis plays a pivotal role in the dysregulation of hepatic glucose metabolism and contributes significantly to fasting hyperglycemia in diabetes. Previous studies have identified zinc-finger BED domain-containing 3 (<em>ZBED3</em>) as a risk gene for type 2 diabetes (T2DM), and its single nucleotide polymorphism (SNPs) is closely associated with the fasting blood glucose level, suggesting a potential correlation between ZBED3 and the onset of diabetes. This study primarily explores the effect of ZBED3 on hepatic gluconeogenesis and analyzes the relevant signaling pathways that regulate hepatic gluconeogenesis.</div></div><div><h3>Methods</h3><div>The expression level of ZBED3 was assessed in the liver of insulin-resistant (IR)-related disease. RNA-seq and bioinformatics analyses were employed to examine the ZBED3-related pathway that modulated HGP. To investigate the role of ZBED3 in hepatic gluconeogenesis, the expression of ZBED3 was manipulated by upregulation or silencing using adeno-associated virus (AAV) in mouse primary hepatocytes (MPHs) and HHL-5 cells. In vivo, hepatocyte-specific ZBED3 knockout mice were generated. Moreover, AAV8 was employed to achieve hepatocyte-specific overexpression and knockdown of ZBED3 in C57BL/6 and db/db mice. Immunoprecipitation and mass spectrometry (IP-MS) analyses were employed to identify proteins that interacted with ZBED3. Co-immunoprecipitation (co-IP), glutathione S-transferase (GST) - pulldown, and dual-luciferase reporter assays were conducted to further elucidate the underlying mechanism of ZBED3 in regulating hepatic gluconeogenesis.</div></div><div><h3>Results</h3><div>The expression of ZBED3 in the liver of IR-related disease models was found to be increased. Under the stimulation of glucagon, ZBED3 promoted the expression of hepatic gluconeogenesis-related genes <em>PGC1A</em>, <em>PCK1</em>, <em>G6PC</em>, thereby increasing HGP. Consistently, the rate of hepatic gluconeogenesis was found to be elevated in mice with hepatocyte-specific overexpression of ZBED3 and decreased in those with ZBED3 knockout. Additionally, the knockdown of ZBED3 in the liver of db/db mice resulted in a reduction in hepatic gluconeogenesis. Moreover, the study revealed that ZBED3 facilitated the nuclear translocation of protein arginine methyltransferases 5 (PRMT5) to influence the regulation of PRMT5-mediated symmetrical dimethylation of arginine (s-DMA) of cyclic adenosine monophosphate (cAMP) response element binding protein (CREB), which in turn affects the phosphorylation of CREB and ultimately promotes HGP.</div></div><div><h3>Conclusions</h3><div>This study indicates that ZBED3 promotes hepatic gluconeogenesis and serves as a critical regulator of the progression of diabetes.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"162 ","pages":"Article 156049"},"PeriodicalIF":10.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impaired unsaturated fatty acid elongation alters mitochondrial function and accelerates metabolic dysfunction-associated steatohepatitis progression 不饱和脂肪酸伸长受损会改变线粒体功能,加速代谢功能障碍相关性脂肪性肝炎的进展。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-23 DOI: 10.1016/j.metabol.2024.156051
Adrien Vouilloz , Thibaut Bourgeois , Marc Diedisheim , Thomas Pilot , Antoine Jalil , Naig Le Guern , Victoria Bergas , Noéline Rohmer , Florence Castelli , Damien Leleu , Alexis Varin , Jean-Paul Pais de Barros , Pascal Degrace , Mickael Rialland , Camille Blériot , Nicolas Venteclef , Charles Thomas , David Masson

Background and aims

Although qualitative and quantitative alterations in liver Polyunsaturated Fatty Acids (PUFAs) are observed in MASH in humans, a causal relationship of PUFAs biosynthetic pathways is yet to be clarified. ELOVL5, an essential enzyme in PUFA elongation regulates hepatic triglyceride metabolism. Nonetheless, the long-term consequences of elongase disruption, particularly in murine models of MASH, have not been evaluated.

Approach & results

In humans, transcriptomic data indicated that PUFAs biosynthesis enzymes and notably ELOVL5 were induced during MASH progression. Moreover, gene module association determination revealed that ELOVL5 expression was associated with mitochondrial function in both humans and mice. WT and Elovl5-deficient mice were fed a high-fat, high-sucrose (HF/HS) diet for four months. Elovl5 deficiency led to limited systemic metabolic alterations but significant hepatic phenotype was observed in Elovl5−/− mice after the HF/HS diet, including hepatomegaly, pronounced macrovesicular and microvesicular steatosis, hepatocyte ballooning, immune cell infiltration, and fibrosis. Lipid analysis confirmed hepatic triglyceride accumulation and a reshaping of FA profile. Transcriptomic analysis indicated significant upregulation of genes involved in immune cell recruitment and fibrosis, and downregulation of genes involved in oxidative phosphorylation in Elovl5−/− mice. Alterations of FA oxidation and energy metabolism were confirmed by non-targeted metabolomic approach. Analysis of mitochondrial function in Elovl5−/− mice showed morphological alterations, qualitative cardiolipin changes with an enrichment in species containing shorter unsaturated FAs, and decreased activity of I and III respiratory chain complexes.

Conclusion

Enhanced susceptibility to diet-induced MASH and fibrosis in Elovl5−/− mice is intricately associated with disruptions in mitochondrial homeostasis, stemming from a profound reshaping of mitochondrial lipids, notably cardiolipins.
背景和目的:尽管在人类 MASH 中观察到肝脏多不饱和脂肪酸(PUFAs)的定性和定量改变,但多不饱和脂肪酸生物合成途径的因果关系尚未明确。ELOVL5 是 PUFA 延长过程中的一个重要酶,它调节肝脏甘油三酯的代谢。然而,人们尚未评估破坏伸长酶的长期后果,尤其是在小鼠 MASH 模型中:在人体中,转录组数据表明,在 MASH 进展过程中,PUFAs 生物合成酶,特别是 ELOVL5 被诱导。此外,基因模块关联测定显示,在人类和小鼠中,ELOVL5 的表达与线粒体功能有关。用高脂肪、高蔗糖(HF/HS)饮食喂养 WT 小鼠和 Elovl5 缺乏小鼠四个月。Elovl5 缺乏导致的全身代谢改变有限,但在 Elovl5-/- 小鼠中观察到高脂/高糖饮食后出现了显著的肝脏表型,包括肝肿大、明显的大泡和小泡脂肪变性、肝细胞气球化、免疫细胞浸润和纤维化。脂质分析证实了肝脏甘油三酯的积累和脂肪酸谱的重塑。转录组分析表明,在Elovl5-/-小鼠体内,参与免疫细胞招募和纤维化的基因明显上调,参与氧化磷酸化的基因下调。非靶向代谢组学方法证实了脂肪酸氧化和能量代谢的改变。对Elovl5-/-小鼠线粒体功能的分析表明,线粒体形态发生了改变,心磷脂发生了定性变化,含有较短不饱和脂肪酸的种类增多,I和III呼吸链复合物的活性降低:结论:Elovl5-/-小鼠对饮食诱导的MASH和纤维化的易感性增强与线粒体稳态的破坏密切相关,而线粒体脂质(尤其是心磷脂)的深刻变化则是线粒体稳态破坏的根源。
{"title":"Impaired unsaturated fatty acid elongation alters mitochondrial function and accelerates metabolic dysfunction-associated steatohepatitis progression","authors":"Adrien Vouilloz ,&nbsp;Thibaut Bourgeois ,&nbsp;Marc Diedisheim ,&nbsp;Thomas Pilot ,&nbsp;Antoine Jalil ,&nbsp;Naig Le Guern ,&nbsp;Victoria Bergas ,&nbsp;Noéline Rohmer ,&nbsp;Florence Castelli ,&nbsp;Damien Leleu ,&nbsp;Alexis Varin ,&nbsp;Jean-Paul Pais de Barros ,&nbsp;Pascal Degrace ,&nbsp;Mickael Rialland ,&nbsp;Camille Blériot ,&nbsp;Nicolas Venteclef ,&nbsp;Charles Thomas ,&nbsp;David Masson","doi":"10.1016/j.metabol.2024.156051","DOIUrl":"10.1016/j.metabol.2024.156051","url":null,"abstract":"<div><h3>Background and aims</h3><div>Although qualitative and quantitative alterations in liver Polyunsaturated Fatty Acids (PUFAs) are observed in MASH in humans, a causal relationship of PUFAs biosynthetic pathways is yet to be clarified. ELOVL5, an essential enzyme in PUFA elongation regulates hepatic triglyceride metabolism. Nonetheless, the long-term consequences of elongase disruption, particularly in murine models of MASH, have not been evaluated.</div></div><div><h3>Approach &amp; results</h3><div>In humans, transcriptomic data indicated that PUFAs biosynthesis enzymes and notably ELOVL5 were induced during MASH progression. Moreover, gene module association determination revealed that ELOVL5 expression was associated with mitochondrial function in both humans and mice. WT and <em>Elovl5</em>-deficient mice were fed a high-fat, high-sucrose (HF/HS) diet for four months. <em>Elovl5</em> deficiency led to limited systemic metabolic alterations but significant hepatic phenotype was observed in <em>Elovl5</em>−/− mice after the HF/HS diet, including hepatomegaly, pronounced macrovesicular and microvesicular steatosis, hepatocyte ballooning, immune cell infiltration, and fibrosis. Lipid analysis confirmed hepatic triglyceride accumulation and a reshaping of FA profile. Transcriptomic analysis indicated significant upregulation of genes involved in immune cell recruitment and fibrosis, and downregulation of genes involved in oxidative phosphorylation in <em>Elovl5</em>−/− mice. Alterations of FA oxidation and energy metabolism were confirmed by non-targeted metabolomic approach. Analysis of mitochondrial function in <em>Elovl5</em>−/− mice showed morphological alterations, qualitative cardiolipin changes with an enrichment in species containing shorter unsaturated FAs, and decreased activity of I and III respiratory chain complexes.</div></div><div><h3>Conclusion</h3><div>Enhanced susceptibility to diet-induced MASH and fibrosis in <em>Elovl5</em>−/− mice is intricately associated with disruptions in mitochondrial homeostasis, stemming from a profound reshaping of mitochondrial lipids, notably cardiolipins.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"162 ","pages":"Article 156051"},"PeriodicalIF":10.8,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
NPRC promotes hepatic steatosis via USP30-mediated deubiquitination of C/EBPβ NPRC 通过 USP30 介导的 C/EBPβ 去泛素化促进肝脏脂肪变性。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-19 DOI: 10.1016/j.metabol.2024.156050
Feng Jiang, Xinmiao Li, Lifan Lin, Mengyuan Li, Jianjian Zheng

Background and aims

Metabolic dysfunction-associated fatty liver disease (MAFLD) is a prevalent chronic liver condition characterised by dysregulated lipid metabolism. The role of Natriuretic Peptide Receptor C (NPRC), a receptor responsible for clearing natriuretic peptides, in MAFLD remains elusive. Therefore, the aim of the present study was to elucidate the role of NPRC in MAFLD progression.

Approach and results

This study demonstrated that NPRC enhanced lipid metabolism reprogramming and accelerated MAFLD progression. Mechanistic investigations, including proteomic and ubiquitination analyses, revealed that elevated NPRC levels stabilized the C/EBPβ protein, leading to excessive lipid accumulation. The DNA-binding domain (DBD) of C/EBPβ interacted with the deubiquitinase USP30, a key regulator that inhibited K149-specific K48-linked polyubiquitination of C/EBPβ. Importantly, the ANPR region of NPRC bound to USP30, facilitating the deubiquitination of C/EBPβ. Furthermore, virtual screening identified punicalin, a natural compound, as a potential inhibitor of NPRC expression, which may reduce hepatic lipid accumulation, inflammation and fibrosis.

Conclusions

Our findings indicate that NPRC recruits USP30 to mediate the deubiquitination of C/EBPβ, driving lipid metabolism reprogramming. Targeting NPRC could represent a promising therapeutic approach for MAFLD.
背景和目的:代谢功能障碍相关性脂肪肝(MAFLD)是一种普遍存在的慢性肝病,其特点是脂质代谢紊乱。钠尿肽受体 C(Natriuretic Peptide Receptor C,NPRC)是一种负责清除钠尿肽的受体,它在 MAFLD 中的作用仍然难以捉摸。因此,本研究旨在阐明 NPRC 在 MAFLD 进展中的作用:本研究表明,NPRC可促进脂质代谢重编程并加速MAFLD的进展。包括蛋白质组学和泛素化分析在内的机理研究表明,NPRC水平升高会稳定C/EBPβ蛋白,从而导致脂质过度积累。C/EBPβ的DNA结合域(DBD)与去泛素化酶USP30相互作用,后者是抑制C/EBPβ的K149特异性K48连锁多泛素化的关键调节因子。重要的是,NPRC 的 ANPR 区域与 USP30 结合,促进了 C/EBPβ 的去泛素化。此外,通过虚拟筛选发现,天然化合物 punicalin 是一种潜在的 NPRC 表达抑制剂,可减少肝脏脂质积累、炎症和纤维化:我们的研究结果表明,NPRC会招募USP30来介导C/EBPβ的去泛素化,从而推动脂质代谢的重编程。以 NPRC 为靶点可能是治疗 MAFLD 的一种有前景的方法。
{"title":"NPRC promotes hepatic steatosis via USP30-mediated deubiquitination of C/EBPβ","authors":"Feng Jiang,&nbsp;Xinmiao Li,&nbsp;Lifan Lin,&nbsp;Mengyuan Li,&nbsp;Jianjian Zheng","doi":"10.1016/j.metabol.2024.156050","DOIUrl":"10.1016/j.metabol.2024.156050","url":null,"abstract":"<div><h3>Background and aims</h3><div>Metabolic dysfunction-associated fatty liver disease (MAFLD) is a prevalent chronic liver condition characterised by dysregulated lipid metabolism. The role of Natriuretic Peptide Receptor C (NPRC), a receptor responsible for clearing natriuretic peptides, in MAFLD remains elusive. Therefore, the aim of the present study was to elucidate the role of NPRC in MAFLD progression.</div></div><div><h3>Approach and results</h3><div>This study demonstrated that NPRC enhanced lipid metabolism reprogramming and accelerated MAFLD progression. Mechanistic investigations, including proteomic and ubiquitination analyses, revealed that elevated NPRC levels stabilized the C/EBPβ protein, leading to excessive lipid accumulation. The DNA-binding domain (DBD) of C/EBPβ interacted with the deubiquitinase USP30, a key regulator that inhibited K149-specific K48-linked polyubiquitination of C/EBPβ. Importantly, the ANPR region of NPRC bound to USP30, facilitating the deubiquitination of C/EBPβ. Furthermore, virtual screening identified punicalin, a natural compound, as a potential inhibitor of NPRC expression, which may reduce hepatic lipid accumulation, inflammation and fibrosis.</div></div><div><h3>Conclusions</h3><div>Our findings indicate that NPRC recruits USP30 to mediate the deubiquitination of C/EBPβ, driving lipid metabolism reprogramming. Targeting NPRC could represent a promising therapeutic approach for MAFLD.</div></div>","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"162 ","pages":"Article 156050"},"PeriodicalIF":10.8,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Increased adrenal steroidogenesis and suppressed corticosteroid responsiveness in critical COVID-19” [Metabolism volume 160 (2024) 155980] 对 "临界 COVID-19 中肾上腺类固醇生成增加和皮质类固醇反应受抑制 "的更正[《新陈代谢》第 160 卷(2024 年)第 155980 期]。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-04 DOI: 10.1016/j.metabol.2024.156033
Tian-Zi Wen , Tian-Ran Li , Xin-Yu Chen , He-Yuan Chen , Shuai Wang , Wen-Juan Fu , Shi-Qi Xiao , Jie Luo , Jia-Feng Huang , Rui Tang , Zhi-Cheng He , Tao Luo , Hong-Liang Zhao , Cong Chen , Jing-Ya Miao , Qin Niu , Yan Wang , Xiu-Wu Bian , Xiao-Hong Yao
{"title":"Corrigendum to “Increased adrenal steroidogenesis and suppressed corticosteroid responsiveness in critical COVID-19” [Metabolism volume 160 (2024) 155980]","authors":"Tian-Zi Wen ,&nbsp;Tian-Ran Li ,&nbsp;Xin-Yu Chen ,&nbsp;He-Yuan Chen ,&nbsp;Shuai Wang ,&nbsp;Wen-Juan Fu ,&nbsp;Shi-Qi Xiao ,&nbsp;Jie Luo ,&nbsp;Jia-Feng Huang ,&nbsp;Rui Tang ,&nbsp;Zhi-Cheng He ,&nbsp;Tao Luo ,&nbsp;Hong-Liang Zhao ,&nbsp;Cong Chen ,&nbsp;Jing-Ya Miao ,&nbsp;Qin Niu ,&nbsp;Yan Wang ,&nbsp;Xiu-Wu Bian ,&nbsp;Xiao-Hong Yao","doi":"10.1016/j.metabol.2024.156033","DOIUrl":"10.1016/j.metabol.2024.156033","url":null,"abstract":"","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156033"},"PeriodicalIF":10.8,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142378097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Expanding diagnostic and therapeutic horizons for MASH: Comparison of the latest and conventional therapeutic approaches 拓展 MASH 诊断和治疗视野:最新治疗方法与传统治疗方法的比较。
IF 10.8 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM Pub Date : 2024-10-01 DOI: 10.1016/j.metabol.2024.156044
Georgia Anastasiou , Konstantinos Stefanakis , Michael A. Hill , Christos S. Mantzoros
{"title":"Expanding diagnostic and therapeutic horizons for MASH: Comparison of the latest and conventional therapeutic approaches","authors":"Georgia Anastasiou ,&nbsp;Konstantinos Stefanakis ,&nbsp;Michael A. Hill ,&nbsp;Christos S. Mantzoros","doi":"10.1016/j.metabol.2024.156044","DOIUrl":"10.1016/j.metabol.2024.156044","url":null,"abstract":"","PeriodicalId":18694,"journal":{"name":"Metabolism: clinical and experimental","volume":"161 ","pages":"Article 156044"},"PeriodicalIF":10.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142372340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Metabolism: clinical and experimental
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1