首页 > 最新文献

Life metabolism最新文献

英文 中文
Hypoxia makes EZH2 inhibitor not easy—advances of crosstalk between HIF and EZH2 缺氧使 EZH2 抑制剂难以发挥作用--HIF 与 EZH2 之间的相互影响
Pub Date : 2024-05-06 DOI: 10.1093/lifemeta/loae017
Zhanya Huang, Yuanjun Tang, Jianlin Zhang, Jiaqi Huang, Rui Cheng, Yunyun Guo, Celina G Kleer, Yuqing Wang, Lixiang Xue
Histone methylation plays a crucial role in tumorigenesis. Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase that regulates chromatin structure and gene expression. EZH2 inhibitors (EZH2is) have been shown to be effective in treating hematologic malignancies, while their effectiveness in solid tumors remains limited. One of the major challenges in the treatment of solid tumors is their hypoxic tumor microenvironment. Hypoxia-inducible factor 1-alpha (HIF-1α) is a key hypoxia responder that interacts with EZH2 to promote tumor progression. Here we discuss the implications of the relationship between EZH2 and hypoxia for expanding the application of EZH2is in solid tumors.
组蛋白甲基化在肿瘤发生中起着至关重要的作用。泽斯特同源物增强子2(EZH2)是一种组蛋白甲基转移酶,可调节染色质结构和基因表达。EZH2抑制剂(EZH2is)已被证明能有效治疗血液系统恶性肿瘤,但对实体瘤的疗效仍然有限。治疗实体瘤的主要挑战之一是其缺氧的肿瘤微环境。缺氧诱导因子 1-α(HIF-1α)是一种关键的缺氧反应因子,它与 EZH2 相互作用,促进肿瘤的进展。在此,我们将讨论 EZH2 与缺氧之间的关系对扩大 EZH2is 在实体瘤中应用的意义。
{"title":"Hypoxia makes EZH2 inhibitor not easy—advances of crosstalk between HIF and EZH2","authors":"Zhanya Huang, Yuanjun Tang, Jianlin Zhang, Jiaqi Huang, Rui Cheng, Yunyun Guo, Celina G Kleer, Yuqing Wang, Lixiang Xue","doi":"10.1093/lifemeta/loae017","DOIUrl":"https://doi.org/10.1093/lifemeta/loae017","url":null,"abstract":"\u0000 Histone methylation plays a crucial role in tumorigenesis. Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase that regulates chromatin structure and gene expression. EZH2 inhibitors (EZH2is) have been shown to be effective in treating hematologic malignancies, while their effectiveness in solid tumors remains limited. One of the major challenges in the treatment of solid tumors is their hypoxic tumor microenvironment. Hypoxia-inducible factor 1-alpha (HIF-1α) is a key hypoxia responder that interacts with EZH2 to promote tumor progression. Here we discuss the implications of the relationship between EZH2 and hypoxia for expanding the application of EZH2is in solid tumors.","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"50 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141010100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BET inhibition induces GDH1-dependent glutamine metabolic remodeling and vulnerability in liver cancer. BET抑制诱导肝癌gdh1依赖性谷氨酰胺代谢重塑和易感性。
Pub Date : 2024-04-26 eCollection Date: 2024-08-01 DOI: 10.1093/lifemeta/loae016
Wen Mi, Jianwei You, Liucheng Li, Lingzhi Zhu, Xinyi Xia, Li Yang, Fei Li, Yi Xu, Junfeng Bi, Pingyu Liu, Li Chen, Fuming Li

Bromodomain and extra-terminal domain (BET) proteins, which function partly through MYC proto-oncogene (MYC), are critical epigenetic readers and emerging therapeutic targets in cancer. Whether and how BET inhibition simultaneously induces metabolic remodeling in cancer cells remains unclear. Here we find that even transient BET inhibition by JQ-1 and other pan-BET inhibitors (pan-BETis) blunts liver cancer cell proliferation and tumor growth. BET inhibition decreases glycolytic gene expression but enhances mitochondrial glucose and glutamine oxidative metabolism revealed by metabolomics and isotope labeling analysis. Specifically, BET inhibition downregulates miR-30a to upregulate glutamate dehydrogenase 1 (GDH1) independent of MYC, which produces α-ketoglutarate for mitochondrial oxidative phosphorylation (OXPHOS). Targeting GDH1 or OXPHOS is synthetic lethal to BET inhibition, and combined BET and OXPHOS inhibition therapeutically prevents liver tumor growth in vitro and in vivo. Together, we uncover an important epigenetic-metabolic crosstalk whereby BET inhibition induces MYC-independent and GDH1-dependent glutamine metabolic remodeling that can be exploited for innovative combination therapy of liver cancer.

溴域和外端结构域(BET)蛋白部分通过MYC原癌基因(MYC)起作用,是重要的表观遗传解读器和癌症治疗的新兴靶点。BET抑制是否以及如何同时诱导癌细胞的代谢重塑尚不清楚。在这里,我们发现JQ-1和其他泛β - β抑制剂(pan- beti)即使是短暂的β - β抑制也会抑制肝癌细胞的增殖和肿瘤生长。代谢组学和同位素标记分析显示,BET抑制降低了糖酵解基因的表达,但增强了线粒体葡萄糖和谷氨酰胺的氧化代谢。具体来说,BET抑制下调miR-30a,上调独立于MYC的谷氨酸脱氢酶1 (GDH1),该酶产生α-酮戊二酸,用于线粒体氧化磷酸化(OXPHOS)。靶向GDH1或OXPHOS对BET抑制具有合成致死性,并且BET和OXPHOS联合抑制在体外和体内均可治疗性地阻止肝脏肿瘤的生长。总之,我们发现了一个重要的表观遗传-代谢串扰,其中BET抑制诱导myc独立和gdh1依赖的谷氨酰胺代谢重塑,可以用于肝癌的创新联合治疗。
{"title":"BET inhibition induces GDH1-dependent glutamine metabolic remodeling and vulnerability in liver cancer.","authors":"Wen Mi, Jianwei You, Liucheng Li, Lingzhi Zhu, Xinyi Xia, Li Yang, Fei Li, Yi Xu, Junfeng Bi, Pingyu Liu, Li Chen, Fuming Li","doi":"10.1093/lifemeta/loae016","DOIUrl":"10.1093/lifemeta/loae016","url":null,"abstract":"<p><p>Bromodomain and extra-terminal domain (BET) proteins, which function partly through MYC proto-oncogene (MYC), are critical epigenetic readers and emerging therapeutic targets in cancer. Whether and how BET inhibition simultaneously induces metabolic remodeling in cancer cells remains unclear. Here we find that even transient BET inhibition by JQ-1 and other pan-BET inhibitors (pan-BETis) blunts liver cancer cell proliferation and tumor growth. BET inhibition decreases glycolytic gene expression but enhances mitochondrial glucose and glutamine oxidative metabolism revealed by metabolomics and isotope labeling analysis. Specifically, BET inhibition downregulates <i>miR-30a</i> to upregulate glutamate dehydrogenase 1 (GDH1) independent of MYC, which produces α-ketoglutarate for mitochondrial oxidative phosphorylation (OXPHOS). Targeting GDH1 or OXPHOS is synthetic lethal to BET inhibition, and combined BET and OXPHOS inhibition therapeutically prevents liver tumor growth <i>in vitro</i> and <i>in vivo</i>. Together, we uncover an important epigenetic-metabolic crosstalk whereby BET inhibition induces MYC-independent and GDH1-dependent glutamine metabolic remodeling that can be exploited for innovative combination therapy of liver cancer.</p>","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"3 4","pages":"loae016"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11749653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intermittent fasting-a double edged sword for atherosclerosis. 间歇性禁食--动脉粥样硬化的双刃剑。
Pub Date : 2024-04-25 eCollection Date: 2024-06-01 DOI: 10.1093/lifemeta/loae015
Jacques Togo, Hoon-Ki Sung
{"title":"Intermittent fasting-a double edged sword for atherosclerosis.","authors":"Jacques Togo, Hoon-Ki Sung","doi":"10.1093/lifemeta/loae015","DOIUrl":"10.1093/lifemeta/loae015","url":null,"abstract":"","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"3 3","pages":"loae015"},"PeriodicalIF":0.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11085033/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probing and imaging phospholipid dynamics in live cells 活细胞中磷脂动态的探测和成像
Pub Date : 2024-04-13 DOI: 10.1093/lifemeta/loae014
Zhongsheng Wu, Yongtao Du, Tom Kirchhausen, Kangmin He
Distinct phospholipid species display specific distribution patterns across cellular membranes, important for their structural and signaling roles and for preserving the integrity and functionality of the plasma membrane and organelles. Recent advancements in lipid biosensor technology and imaging modalities now allow for direct observation of phospholipid distribution, trafficking, and dynamics in living cells. These innovations have markedly advanced our understanding of phospholipid function and regulation at both cellular and subcellular levels. Herein, we summarize the latest developments in phospholipid biosensor design and application, emphasizing the contribution of cutting-edge imaging techniques to elucidating phospholipid dynamics and distribution with unparalleled spatiotemporal precision.
不同种类的磷脂在细胞膜上显示出特定的分布模式,这对它们的结构和信号作用以及保持质膜和细胞器的完整性和功能性非常重要。脂质生物传感器技术和成像模式的最新进展使我们现在可以直接观察活细胞中磷脂的分布、贩运和动态。这些创新极大地推动了我们对磷脂在细胞和亚细胞水平上的功能和调控的理解。在此,我们总结了磷脂生物传感器设计和应用的最新进展,强调了尖端成像技术在以无与伦比的时空精度阐明磷脂动态和分布方面的贡献。
{"title":"Probing and imaging phospholipid dynamics in live cells","authors":"Zhongsheng Wu, Yongtao Du, Tom Kirchhausen, Kangmin He","doi":"10.1093/lifemeta/loae014","DOIUrl":"https://doi.org/10.1093/lifemeta/loae014","url":null,"abstract":"\u0000 Distinct phospholipid species display specific distribution patterns across cellular membranes, important for their structural and signaling roles and for preserving the integrity and functionality of the plasma membrane and organelles. Recent advancements in lipid biosensor technology and imaging modalities now allow for direct observation of phospholipid distribution, trafficking, and dynamics in living cells. These innovations have markedly advanced our understanding of phospholipid function and regulation at both cellular and subcellular levels. Herein, we summarize the latest developments in phospholipid biosensor design and application, emphasizing the contribution of cutting-edge imaging techniques to elucidating phospholipid dynamics and distribution with unparalleled spatiotemporal precision.","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140706947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High temperature ameliorates high-fat diet-induced obesity by promoting ceramide breakdown in skeletal muscle tissue 高温通过促进骨骼肌组织中神经酰胺的分解,改善高脂饮食诱发的肥胖症
Pub Date : 2024-04-03 DOI: 10.1093/lifemeta/loae012
Qiankun Wang, Lupeng Chen, Junzhi Zhang, Yue Liu, Yi Jin, Jian Wu, Zhuqing Ren
Obesity is considered an epidemic often accompanied by insulin resistance (IR). Heat treatment (HT) has been shown to prevent high-fat diet-induced IR in skeletal muscle, but the underlying mechanisms are poorly understood. In this study, we discovered that high temperature alleviated the hallmarks of obesity by promoting glycogen synthesis and lowering blood glucose levels in skeletal muscle tissue (SMT). Additionally, HT maintained the decay phase of heat shock factor 1 (HSF1), leading to the activation of gene expression of heat shock proteins (HSPs), which contributed to the alleviation of IR in SMT of diet-induced obese (DIO) mice. Metabolomics and lipidomics analyses showed that HT promoted ceramide (Cer) breakdown, resulting in an elevation of both sphingomyelin (SM) and sphingosine, which further contributed to the amelioration of IR in SMT of DIO mice. Importantly, the increase in sphingosine was attributed to the heightened expression of the acid ceramidase N-acylsphingosine amidohydrolase 1 (ASAH1), and the inhibition of ASAH1 attenuated HT-relieved IR in SMT of DIO mice. Surprisingly, high temperature increased the composition of Cer and cholesteryl ester in lipid droplets of skeletal muscle cells. This not only helped alleviate IR but also prevented lipotoxicity in SMT of DIO mice. These findings revealed a previously unknown connection between a high-temperature environment and sphingolipid metabolism in obesity, suggesting that high temperature can improve IR by promoting Cer catabolism in SMT of obese mice.
肥胖被认为是一种流行病,往往伴随着胰岛素抵抗(IR)。热处理(HT)已被证明能防止高脂饮食诱导的骨骼肌胰岛素抵抗,但其潜在机制却鲜为人知。在这项研究中,我们发现高温能促进糖原合成并降低骨骼肌组织(SMT)中的血糖水平,从而减轻肥胖症的特征。此外,高温还能维持热休克因子1(HSF1)的衰变阶段,从而激活热休克蛋白(HSPs)的基因表达,这有助于减轻饮食诱导肥胖(DIO)小鼠骨骼肌组织中的IR。代谢组学和脂质组学分析表明,高温促进了神经酰胺(Cer)的分解,导致鞘磷脂(SM)和鞘氨醇的增加,这进一步促进了DIO小鼠SMT中IR的改善。重要的是,鞘氨醇的增加归因于酸性神经氨酸酶 N-酰鞘氨醇酰胺水解酶 1(ASAH1)表达的增加,抑制 ASAH1 可减轻高温缓解的 DIO 小鼠 SMT 的 IR。令人惊讶的是,高温增加了骨骼肌细胞脂滴中Cer和胆固醇酯的成分。这不仅有助于缓解IR,还能防止DIO小鼠SMT的脂毒性。这些发现揭示了高温环境与肥胖症鞘脂代谢之间之前未知的联系,表明高温可以通过促进肥胖小鼠SMT中Cer的分解代谢来改善IR。
{"title":"High temperature ameliorates high-fat diet-induced obesity by promoting ceramide breakdown in skeletal muscle tissue","authors":"Qiankun Wang, Lupeng Chen, Junzhi Zhang, Yue Liu, Yi Jin, Jian Wu, Zhuqing Ren","doi":"10.1093/lifemeta/loae012","DOIUrl":"https://doi.org/10.1093/lifemeta/loae012","url":null,"abstract":"\u0000 Obesity is considered an epidemic often accompanied by insulin resistance (IR). Heat treatment (HT) has been shown to prevent high-fat diet-induced IR in skeletal muscle, but the underlying mechanisms are poorly understood. In this study, we discovered that high temperature alleviated the hallmarks of obesity by promoting glycogen synthesis and lowering blood glucose levels in skeletal muscle tissue (SMT). Additionally, HT maintained the decay phase of heat shock factor 1 (HSF1), leading to the activation of gene expression of heat shock proteins (HSPs), which contributed to the alleviation of IR in SMT of diet-induced obese (DIO) mice. Metabolomics and lipidomics analyses showed that HT promoted ceramide (Cer) breakdown, resulting in an elevation of both sphingomyelin (SM) and sphingosine, which further contributed to the amelioration of IR in SMT of DIO mice. Importantly, the increase in sphingosine was attributed to the heightened expression of the acid ceramidase N-acylsphingosine amidohydrolase 1 (ASAH1), and the inhibition of ASAH1 attenuated HT-relieved IR in SMT of DIO mice. Surprisingly, high temperature increased the composition of Cer and cholesteryl ester in lipid droplets of skeletal muscle cells. This not only helped alleviate IR but also prevented lipotoxicity in SMT of DIO mice. These findings revealed a previously unknown connection between a high-temperature environment and sphingolipid metabolism in obesity, suggesting that high temperature can improve IR by promoting Cer catabolism in SMT of obese mice.","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"100 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MRE11 lactylation: a linker between Warburg effect and DNA repair. MRE11乳酸化:Warburg效应与DNA修复之间的联系。
Pub Date : 2024-04-02 eCollection Date: 2024-06-01 DOI: 10.1093/lifemeta/loae013
Pingyu Liu, Hongbin Ji, Fuming Li
{"title":"MRE11 lactylation: a linker between Warburg effect and DNA repair.","authors":"Pingyu Liu, Hongbin Ji, Fuming Li","doi":"10.1093/lifemeta/loae013","DOIUrl":"10.1093/lifemeta/loae013","url":null,"abstract":"","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"3 3","pages":"loae013"},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11749856/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IL-10 suppresses lipid metabolism-mediated intestinal inflammation IL-10 可抑制脂质代谢介导的肠道炎症
Pub Date : 2024-03-26 DOI: 10.1093/lifemeta/loae011
Tristram A J Ryan, Ivan Zanoni
{"title":"IL-10 suppresses lipid metabolism-mediated intestinal inflammation","authors":"Tristram A J Ryan, Ivan Zanoni","doi":"10.1093/lifemeta/loae011","DOIUrl":"https://doi.org/10.1093/lifemeta/loae011","url":null,"abstract":"","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"83 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140377868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Results of the Second Life Metabolism Travel Awards 2024 2024 年第二人生代谢旅行奖评选结果
Pub Date : 2024-03-20 DOI: 10.1093/lifemeta/loae007
John R. Speakman
{"title":"Results of the Second Life Metabolism Travel Awards 2024","authors":"John R. Speakman","doi":"10.1093/lifemeta/loae007","DOIUrl":"https://doi.org/10.1093/lifemeta/loae007","url":null,"abstract":"","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"27 s78","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140224482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Apolipoprotein A-IV and its derived peptide, T55−121, improve glycemic control and increase energy expenditure 载脂蛋白 A-IV 及其衍生肽 T55-121 可改善血糖控制并增加能量消耗
Pub Date : 2024-03-14 DOI: 10.1093/lifemeta/loae010
Zhen Cao, Lei Lei, Ziyun Zhou, Shimeng Xu, Linlin Wang, Weikang Gong, Qi Zhang, Bin Pan, Gaoxin Zhang, Quan Yuan, Liujuan Cui, Min Zheng, Tao Xu, You Wang, Shuyan Zhang, Pingsheng Liu
It is crucial to understand the glucose control within our bodies. Bariatric/metabolic surgeries, including laparoscopic sleeve gastrectomy (LSG) and Roux-en-Y gastric bypass (RYGB), provide an avenue for exploring the potential key factors involved in maintaining glucose homeostasis since these surgeries have shown promising results in improving glycemic control among patients with severe type 2 diabetes (T2D). For the first time, a markedly altered population of serum proteins in patients after LSG was discovered and analyzed through proteomics. Apolipoprotein A-IV (apoA-IV) was revealed to be increased dramatically in diabetic obese patients following LSG, and a similar effect was observed in patients after RYGB surgery. Moreover, recombinant protein apoA-IV treatment was proven to enhance insulin secretion in isolated human islets. These results showed that apoA-IV may play a crucial role in glycemic control in humans, potentially through enhancing insulin secretion in human islets. ApoA-IV was further shown to enhance energy expenditure and improve glucose tolerance in diabetic rodents, through stimulating glucose-dependent insulin secretion in pancreatic β cells, partially via Gαs-coupled GPCR/cAMP (G protein-coupled receptor-cyclic adenosine monophosphate) signaling. Furthermore, T55−121, truncated peptide 55−121 of apoA-IV, was discovered to mediate the function of apoA-IV. These collective findings contribute to our understanding of the relationship between apoA-IV and glycemic control, highlighting its potential as a biomarker or therapeutic target in managing and improving glucose regulation.
了解人体内的葡萄糖控制至关重要。减肥/代谢手术,包括腹腔镜袖带胃切除术(LSG)和Roux-en-Y胃旁路术(RYGB),为探索维持葡萄糖稳态的潜在关键因素提供了一个途径,因为这些手术在改善严重2型糖尿病(T2D)患者的血糖控制方面显示出了良好的效果。通过蛋白质组学研究,我们首次发现并分析了 LSG 术后患者血清蛋白的明显变化。研究发现,LSG术后糖尿病肥胖患者的载脂蛋白A-IV(apoA-IV)显著增加,而RYGB术后患者的载脂蛋白A-IV也有类似的变化。此外,重组蛋白载脂蛋白 A-IV 还能增强离体人胰岛的胰岛素分泌。这些结果表明,载脂蛋白A-IV可能通过增强人体胰岛的胰岛素分泌,在人类血糖控制中发挥重要作用。研究进一步表明,载脂蛋白A-IV可通过刺激胰腺β细胞的葡萄糖依赖性胰岛素分泌,部分通过Gαs偶联GPCR/cAMP(G蛋白偶联受体-环磷酸腺苷)信号传导,从而增强糖尿病啮齿动物的能量消耗并改善葡萄糖耐量。此外,还发现了 T55-121(载脂蛋白 A-IV 的截短肽 55-121)可介导载脂蛋白 A-IV 的功能。这些研究结果有助于我们了解载脂蛋白A-IV与血糖控制之间的关系,突出了其作为管理和改善血糖调节的生物标志物或治疗靶点的潜力。
{"title":"Apolipoprotein A-IV and its derived peptide, T55−121, improve glycemic control and increase energy expenditure","authors":"Zhen Cao, Lei Lei, Ziyun Zhou, Shimeng Xu, Linlin Wang, Weikang Gong, Qi Zhang, Bin Pan, Gaoxin Zhang, Quan Yuan, Liujuan Cui, Min Zheng, Tao Xu, You Wang, Shuyan Zhang, Pingsheng Liu","doi":"10.1093/lifemeta/loae010","DOIUrl":"https://doi.org/10.1093/lifemeta/loae010","url":null,"abstract":"\u0000 It is crucial to understand the glucose control within our bodies. Bariatric/metabolic surgeries, including laparoscopic sleeve gastrectomy (LSG) and Roux-en-Y gastric bypass (RYGB), provide an avenue for exploring the potential key factors involved in maintaining glucose homeostasis since these surgeries have shown promising results in improving glycemic control among patients with severe type 2 diabetes (T2D). For the first time, a markedly altered population of serum proteins in patients after LSG was discovered and analyzed through proteomics. Apolipoprotein A-IV (apoA-IV) was revealed to be increased dramatically in diabetic obese patients following LSG, and a similar effect was observed in patients after RYGB surgery. Moreover, recombinant protein apoA-IV treatment was proven to enhance insulin secretion in isolated human islets. These results showed that apoA-IV may play a crucial role in glycemic control in humans, potentially through enhancing insulin secretion in human islets. ApoA-IV was further shown to enhance energy expenditure and improve glucose tolerance in diabetic rodents, through stimulating glucose-dependent insulin secretion in pancreatic β cells, partially via Gαs-coupled GPCR/cAMP (G protein-coupled receptor-cyclic adenosine monophosphate) signaling. Furthermore, T55−121, truncated peptide 55−121 of apoA-IV, was discovered to mediate the function of apoA-IV. These collective findings contribute to our understanding of the relationship between apoA-IV and glycemic control, highlighting its potential as a biomarker or therapeutic target in managing and improving glucose regulation.","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"16 1part1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140242935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alternate day fasting aggravates atherosclerosis through the suppression of hepatic ATF3 in Apoe −/− mice 隔日禁食通过抑制载脂蛋白-/-小鼠肝脏 ATF3 使动脉粥样硬化恶化
Pub Date : 2024-03-07 DOI: 10.1093/lifemeta/loae009
Yajuan Deng, Xiaoyu Yang, Xueru Ye, Youwen Yuan, Yanan Zhang, Fei Teng, Danming You, Xuan Zhou, Wenhui Liu, Kangli Li, Shenjian Luo, Zhi Yang, Ruxin Chen, Guojun Shi, Jin Li, Huijie Zhang
Atherosclerosis is the major contributor to cardiovascular mortality worldwide. Alternate day fasting (ADF) has gained growing attention due to its metabolic benefits. However, the effects of ADF on atherosclerotic plaque formation remain inconsistent and controversial in atherosclerotic animal models. The present study was designed to investigate the effect of ADF on atherosclerosis in apolipoprotein E-deficient (Apoe−/−) mice. Eleven-week-old male Apoe−/− mice fed with Western diet (WD) were randomly grouped into ad libitum (AL) group and ADF group, and ADF aggravated both the early and advanced atherosclerotic lesion formation, which might be due to the disturbed cholesterol profiles caused by ADF intervention. ADF significantly altered cholesterol metabolism pathways and down-regulated integrated stress response (ISR) in the liver. The hepatic expression of activating transcription factor 3 (ATF3) was suppressed in mice treated with ADF and hepatocyte-specific overexpression of ATF3 attenuated the effects of ADF on atherosclerotic plaque formation in Apoe−/− mice. Moreover, the expression of ATF3 could be regulated by Krüppel-like factor 6 (KLF6) and both the expressions of ATF3 and KLF6 were regulated by hepatic cellular ISR pathway. In conclusion, ADF aggravates atherosclerosis progression in Apoe−/− mice fed on WD. ADF inhibits the hepatic ISR signaling pathway and decreases the expression of KLF6, subsequently inhibiting ATF3 expression. The suppressed ATF3 expression in the liver mediates the deteriorated effects of ADF on atherosclerosis in Apoe−/− mice. The findings suggest the potentially harmful effects when ADF intervention is applied to the population at high risk of atherosclerosis.
动脉粥样硬化是导致全球心血管疾病死亡的主要原因。隔日禁食(ADF)因其对新陈代谢的益处而受到越来越多的关注。然而,在动脉粥样硬化动物模型中,ADF对动脉粥样硬化斑块形成的影响仍不一致且存在争议。本研究旨在探讨 ADF 对载脂蛋白 E 缺失(Apoe-/-)小鼠动脉粥样硬化的影响。将11周龄雄性载脂蛋白E缺失(Apoe-/-)小鼠随机分为自由饮食组(AL)和ADF组,ADF加重了早期和晚期动脉粥样硬化病变的形成,这可能是由于ADF干预导致胆固醇谱紊乱所致。ADF明显改变了胆固醇代谢途径,并下调了肝脏的综合应激反应(ISR)。肝细胞特异性过表达ATF3可减轻ADF对载脂蛋白/-小鼠动脉粥样硬化斑块形成的影响。此外,ATF3的表达受Krüppel样因子6(KLF6)的调控,ATF3和KLF6的表达均受肝细胞ISR通路的调控。总之,ADF会加重以WD喂养的载脂蛋白/-小鼠的动脉粥样硬化进展。ADF 可抑制肝细胞 ISR 信号通路,降低 KLF6 的表达,进而抑制 ATF3 的表达。ATF3在肝脏中的表达受到抑制,从而加剧了ADF对载脂蛋白/-小鼠动脉粥样硬化的影响。研究结果表明,对动脉粥样硬化高危人群进行 ADF 干预可能会产生有害影响。
{"title":"Alternate day fasting aggravates atherosclerosis through the suppression of hepatic ATF3 in Apoe\u0000 −/− mice","authors":"Yajuan Deng, Xiaoyu Yang, Xueru Ye, Youwen Yuan, Yanan Zhang, Fei Teng, Danming You, Xuan Zhou, Wenhui Liu, Kangli Li, Shenjian Luo, Zhi Yang, Ruxin Chen, Guojun Shi, Jin Li, Huijie Zhang","doi":"10.1093/lifemeta/loae009","DOIUrl":"https://doi.org/10.1093/lifemeta/loae009","url":null,"abstract":"\u0000 Atherosclerosis is the major contributor to cardiovascular mortality worldwide. Alternate day fasting (ADF) has gained growing attention due to its metabolic benefits. However, the effects of ADF on atherosclerotic plaque formation remain inconsistent and controversial in atherosclerotic animal models. The present study was designed to investigate the effect of ADF on atherosclerosis in apolipoprotein E-deficient (Apoe−/−) mice. Eleven-week-old male Apoe−/− mice fed with Western diet (WD) were randomly grouped into ad libitum (AL) group and ADF group, and ADF aggravated both the early and advanced atherosclerotic lesion formation, which might be due to the disturbed cholesterol profiles caused by ADF intervention. ADF significantly altered cholesterol metabolism pathways and down-regulated integrated stress response (ISR) in the liver. The hepatic expression of activating transcription factor 3 (ATF3) was suppressed in mice treated with ADF and hepatocyte-specific overexpression of ATF3 attenuated the effects of ADF on atherosclerotic plaque formation in Apoe−/− mice. Moreover, the expression of ATF3 could be regulated by Krüppel-like factor 6 (KLF6) and both the expressions of ATF3 and KLF6 were regulated by hepatic cellular ISR pathway. In conclusion, ADF aggravates atherosclerosis progression in Apoe−/− mice fed on WD. ADF inhibits the hepatic ISR signaling pathway and decreases the expression of KLF6, subsequently inhibiting ATF3 expression. The suppressed ATF3 expression in the liver mediates the deteriorated effects of ADF on atherosclerosis in Apoe−/− mice. The findings suggest the potentially harmful effects when ADF intervention is applied to the population at high risk of atherosclerosis.","PeriodicalId":74074,"journal":{"name":"Life metabolism","volume":"24 105","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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
Life metabolism
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:604180095
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