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Corrigendum to “MMP19 in vascular smooth muscle cells protects against thoracic aortic aneurysm and dissection via the MMP19/Aggrecan/Wnt/β-catenin axis”[J Mol Cell Cardiol. 202 (2025) 35–49] “血管平滑肌细胞MMP19/Aggrecan/Wnt/β-catenin轴对胸主动脉瘤和夹层的保护作用”[J].中华检验医学杂志,2002(2):35-49。
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-20 DOI: 10.1016/j.yjmcc.2025.08.002
Baihui Ma , Qingyi Zeng , Fangfang Yang , Hang Yang , Wenke Li , Rei Fu , Zeyu Cai , Guoyan Zhu , Mingyao Luo , Zhou Zhou
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引用次数: 0
Response to: Cytoplasmic RBM20 gain-of-function induces atrial arrhythmogenicity independent of splicing defects in a novel murine model by Brijesh Sathian et al. Brijesh Sathian等人在一种新的小鼠模型中,细胞质RBM20功能获得诱导心房心律失常,不依赖于剪接缺陷。
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-19 DOI: 10.1016/j.yjmcc.2025.08.006
Kensuke Ihara
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引用次数: 0
A brief history of circadian time in the heart 心脏昼夜节律时间简史
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-19 DOI: 10.1016/j.yjmcc.2025.08.005
Martin E. Young , Vanya Khanna , Mallory Metcalfe , Niruththaan Rameshkumar , Sarah Harington , Leo H. Li , Janan Shoja Doost , Heinrich Taegtmeyer , Tami A. Martino
This review tracks the discovery of circadian biology in cardiovascular science, starting with early clinical observations of daily changes in heart rate, blood pressure, and cardiovascular events. These patterns suggested that time of day matters, but it was not until the past two decades that the mechanisms and knowledge translation of these rhythms were uncovered. We describe the heart's intrinsic circadian properties and importantly how this leads to regulation of cardiac gene and protein expression, neuroendocrine and vascular rhythms, metabolism, cellular electrophysiology, and cell signaling pathways. Next, we explore emerging themes, including the impact of circadian timing on ischemic injury, cardiac aging, and trends in circadian desynchrony, sex, and interorgan crosstalk. Building on these discoveries, circadian medicine is beginning to reshape clinical care including timing of surgery, chronotherapies, biomarkers, ICU design, novel molecular drugs targeting the circadian clock, the role of the microbiome and time restricted eating, the new field of rest, and the concept of One Health and applications to veterinary medicine. Looking ahead we address new frontiers such as epigenetics, gene editing, and spaceflight. Together, these advances offer a roadmap for how circadian rhythms can be harnessed to improve cardiovascular health and disease outcomes, supporting longer and healthier lives.
本文回顾了心血管科学中昼夜节律生物学的发现,从早期临床观察心率、血压和心血管事件的日常变化开始。这些模式表明,一天中的时间很重要,但直到过去二十年,这些节律的机制和知识转化才被揭示出来。我们描述了心脏内在的昼夜节律特性,以及这如何导致心脏基因和蛋白质表达、神经内分泌和血管节律、代谢、细胞电生理和细胞信号传导途径的调节。接下来,我们将探讨新出现的主题,包括昼夜节律对缺血性损伤、心脏老化的影响,以及昼夜节律不同步、性别和器官间串扰的趋势。在这些发现的基础上,昼夜节律医学开始重塑临床护理,包括手术时机、时间疗法、生物标志物、ICU设计、针对昼夜节律钟的新型分子药物、微生物组的作用和限时饮食、新的休息领域,以及“同一个健康”的概念及其在兽医学中的应用。展望未来,我们将探讨表观遗传学、基因编辑和太空飞行等新领域。总之,这些进展为如何利用昼夜节律改善心血管健康和疾病结局、支持更长寿、更健康的生活提供了路线图。
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引用次数: 0
Long-term exercise training is associated with unique cardiac troponin I phosphorylation pattern and benign myocardial hypertrophy in the right ventricle in an experimental model of exercise-induced myocardial remodelling 在运动诱导心肌重构的实验模型中,长期运动训练与独特的心肌肌钙蛋白I磷酸化模式和右心室良性心肌肥大有关
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-19 DOI: 10.1016/j.yjmcc.2025.08.008
Attila Oláh , Beáta Bódi , Bálint András Barta , Olívia Bottlik , Alex Ali Sayour , Mihály Ruppert , Karolina Katarzyna Kolodziejska , Andrea Kovács , Zoltán V. Varga , Péter Ferdinandy , Oliver Schilling , Zoltán Papp , Béla Merkely , Tamás Radovits

Background

Research projects have focused on exercise-induced alterations of the right ventricle (RV) of the heart, because the exercise-associated disproportionate load on the RV might lead to pathological consequences, such as interstitial fibrosis, chamber dilation or pro-arrhytmic remodelling. We aimed at providing a complex characterization of RV alterations induced by regular training in a rat model of exercise-induced cardiac remodelling.

Methods

Young, adult rats were divided into control (Co) and exercised (Ex) groups. Exercised rats swam 200 min/day for 12 weeks. In vivo cardiac electrophysiological study and in vitro force measurements on isolated permeabilized RV cardiomyocytes were performed to investigate electrical and functional alterations, respectively. Molecular biological and histological investigations were carried out.

Results

Exercise training was associated with mild increased RV hypertrophy (cardiomyocyte diameter: 12.5 ± 0.1 μm Co vs. 13.7 ± 0.2 μm Ex, p < 0.05) and corresponding hyperphosphorylation of protein kinase B (Akt). Absence of pathological remodelling was revealed by unchanged pro-fibrotic and pro-apoptotic markers. We found increased maximal force development (12.1 ± 1.0kN/m2 Co vs. 16.7 ± 1.1 kN/m2 Ex, p < 0.05) and improved calcium sensitivity in the cardiomyocytes of exercised animals. Sarcomere protein investigations revealed marked overall and site-specific (Ser22/23, Ser43 and Thr143) hypophosphorylation of troponinI. We found prolonged QT interval (repolarization) and RV effective refracter period along with decreased gene expression of potassium channels. We could not induce any ventricular arrhythmia by programmed stimulation.

Conclusions

Regular swim training induced physiological RV hypertrophy that was associated with functional improvement related to unique hypophosphorilation pattern of troponin I. A balanced exercise program without excessive exercise sessions might not be associated with induction of pathological alterations.
研究项目主要关注运动引起的右心室(RV)的改变,因为运动相关的右心室不成比例的负荷可能导致病理后果,如间质纤维化、心室扩张或促心律失常重构。我们的目的是在大鼠运动诱导的心脏重构模型中,提供由常规训练引起的右心室改变的复杂特征。方法将幼年、成年大鼠分为对照组(Co)和运动组(Ex)。运动后的大鼠每天游泳200分钟,持续12周。在体内进行心脏电生理研究,并对分离的渗透性心室心肌细胞进行体外力测量,分别研究电和功能的改变。进行了分子生物学和组织学研究。结果运动训练与轻度增加的右心室肥大(心肌细胞直径:12.5±0.1 μm Co vs. 13.7±0.2 μm Ex, p < 0.05)和相应的蛋白激酶B (Akt)高磷酸化相关。未改变的促纤维化和促凋亡标志物显示病理重构的缺失。我们发现运动动物心肌细胞的最大力量发展增加(Co为12.1±1.0kN/m2, Ex为16.7±1.1 kN/m2, p < 0.05),钙敏感性提高。肌瘤蛋白研究显示肌钙蛋白的整体和位点特异性(Ser22/23, Ser43和Thr143)低磷酸化。我们发现QT间期延长(复极)和RV有效折射期随钾通道基因表达减少而延长。程序性刺激不能诱发室性心律失常。结论:定期游泳训练诱导的生理性右心室肥大与肌钙蛋白i独特的低磷酸化模式相关的功能改善有关。没有过度运动的平衡运动计划可能与诱导病理改变无关。
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引用次数: 0
Paracrine IGFBP3 spatially coordinates IGF signaling to induce myocardial regeneration in mice 旁分泌IGFBP3空间协调IGF信号诱导小鼠心肌再生。
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-17 DOI: 10.1016/j.yjmcc.2025.08.004
Shah R. Ali , Ngoc Uyen Nhi Nguyen , Waleed Elhelaly , Ching-Cheng Hsu , Shujuan Li , Ivan Menendez-Montes , Zhaoning Wang , Miao Cui , Abdallah Elnwasany , Feng Xiao , Jisheng Sun , Suwannee Thet , Nicholas T. Lam , Alisson Cardoso , Ana Helena Pereira , Jinhu Wang , Eric N. Olson , Michael T. Kinter , Luke I. Szweda , John Shelton , Hesham A. Sadek
We hypothesized that the microenvironment of the regenerating neonatal mouse heart contains pro-mitotic factors. To identify non-cell-autonomous effectors of cardiomyocyte mitosis, we analyzed a transcriptomic screen of regenerating and non-regenerating hearts for differentially expressed secreted proteins. We identified IGFBP3 in this screen as a neonatal injury-associated secreted protein. IGFBP3 belongs to a family of proteins that can stabilize and sequester IGF growth factors, as well as exert IGF-independent functions. In the neonatal heart, IGFBP3 is expressed and secreted predominantly by endothelial cells following injury, notably in the border zone of the infarct. We generated loss-of-function and gain-of-function mouse models to dissect the role of IGFBP3 in myocardial regeneration. Global deletion of Igfbp3 blunted neonatal regeneration, while gain-of-function experiments using recombinant IGFBP3 or a tissue-specific ectopic Igfbp3 mouse model uncovered a pro-mitotic effect of IGFBP3 on cardiomyocytes in vitro and in the murine heart. The temporal and spatial expression of an IGFBP3 protease (PAPPA2) and IGFBP3 in the infarct zone suggests that IGFBP3 proteolysis is coordinated to locally release IGF2, which can activate an Insulin/IGF-based growth pathway to stimulate cardiomyocyte division. Collectively, our work illuminates an endothelial-cardiomyocyte crosstalk involving IGFBP3 that can mediate myocardial regeneration in the neonatal heart.
我们假设新生小鼠心脏再生的微环境中含有促有丝分裂因子。为了鉴定心肌细胞有丝分裂的非细胞自主效应,我们分析了再生和非再生心脏的转录组筛选,以寻找差异表达的分泌蛋白。我们在这个筛选中确定IGFBP3是新生儿损伤相关的分泌蛋白。IGFBP3属于一个稳定和隔离IGF生长因子的蛋白家族,并发挥与IGF无关的功能。在新生儿心脏中,IGFBP3在损伤后主要由内皮细胞表达和分泌,尤其是在梗死边界区。我们建立了功能丧失和功能获得小鼠模型来解剖IGFBP3在心肌再生中的作用。Igfbp3的整体缺失会阻碍新生儿再生,而使用重组Igfbp3或组织特异性异位Igfbp3小鼠模型进行的功能获得实验发现,Igfbp3在体外和小鼠心脏中对心肌细胞具有促有丝分裂作用。IGFBP3蛋白酶(PAPPA2)和IGFBP3在梗死区的时空表达表明,IGFBP3蛋白水解协调局部释放IGF2,从而激活基于胰岛素/ igf的生长通路,刺激心肌细胞分裂。总的来说,我们的工作阐明了涉及IGFBP3的内皮-心肌细胞串扰可以介导新生儿心脏的心肌再生。
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引用次数: 0
Cell type specificity of Hippo-YAP signaling in cardiac development and disease Hippo-YAP信号在心脏发育和疾病中的细胞类型特异性
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-15 DOI: 10.1016/j.yjmcc.2025.08.003
Jin Guan, Dominic P. Del Re
The Hippo-YAP pathway is an evolutionarily conserved signaling module that regulates cell survival, proliferation, and differentiation to control organ size. Recent work has demonstrated critical roles for Hippo-YAP signaling in cardiac development and disease, including its ability to modulate both pathological and regenerative responses in the heart. Therefore, targeting the Hippo-YAP pathway for therapeutic benefit has gained attention and holds substantial promise for improving outcomes in patients with heart disease. Importantly, however, much of our understanding of cardiac Hippo-YAP signaling is based on studies in cardiomyocytes, and far less is known in other cell types in the heart. This review will focus primarily on the role of Hippo-YAP signaling in cardiomyocytes, cardiac fibroblasts, and macrophages, and explore how cell type-specific functions can impact heart development, as well as injury responses that can drive divergent outcomes in heart disease.
Hippo-YAP通路是一种进化保守的信号传导模块,通过调节细胞存活、增殖和分化来控制器官大小。最近的研究已经证明了Hippo-YAP信号在心脏发育和疾病中的关键作用,包括它调节心脏病理和再生反应的能力。因此,靶向Hippo-YAP通路获得治疗益处已引起人们的关注,并有望改善心脏病患者的预后。然而,重要的是,我们对心脏Hippo-YAP信号的大部分理解都是基于对心肌细胞的研究,而对心脏其他细胞类型的了解要少得多。本综述将主要关注Hippo-YAP信号在心肌细胞、心脏成纤维细胞和巨噬细胞中的作用,并探讨细胞类型特异性功能如何影响心脏发育,以及可驱动心脏病不同结果的损伤反应。
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引用次数: 0
Genetical TRPV4 deletion-associated gut microbiota alleviates cardiac dysfunction in mice with diabetic cardiomyopathy 遗传性TRPV4缺失相关肠道菌群减轻糖尿病性心肌病小鼠心功能障碍
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-09 DOI: 10.1016/j.yjmcc.2025.08.001
Yanyan Zhou , Teng Yang , Suyang Zheng , Tiantian Gan , Fan Yu , Guizhu Liu , Tingting Zhou
Diabetic cardiomyopathy (DCM) is a serious complication associated with diabetes that characterized by the cardiac dysfunction and myocardial fibrosis. Recent studies emphasize the significance of the gut-heart axis in the development of DCM. This current study investigates the effect of systematic-genetical TRPV4 knockout on DCM progression and explores the underlying mechanisms involving gut microbiota modulation and intestinal barrier integrity. The removal of TRPV4 in mice with DCM markedly enhances cardiac performance, decreases myocardial fibrosis, and modifies the composition of gut microbiota, resulting in a significant rise in Bacteroides acidifaciens (BA). TRPV4 deletion also upregulates tight junction proteins (Zonula occludens-1 (ZO-1), Occludin, and Claudin-1) and reduces serum lipopolysaccharide levels. Furthermore, fecal microbiota transplantation from the DCM donors with TRPV4 knockout to the DCM receptors replicates these cardioprotective effects in mice, and administration of BA improves cardiac function and relieves the fibrosis. Our study suggests that the cardioprotective effects of the genetic deletion of TRPV4 are related to changes in the gut microbiome, highlighting the importance of the connection between TRPV4, the gut, and the heart in the disease mechanism and potential therapeutic strategies for DCM.
糖尿病性心肌病(DCM)是一种以心功能障碍和心肌纤维化为特征的严重糖尿病并发症。最近的研究强调肠心轴在DCM发展中的重要性。本研究探讨了系统遗传TRPV4基因敲除对DCM进展的影响,并探讨了涉及肠道微生物群调节和肠道屏障完整性的潜在机制。去除DCM小鼠的TRPV4可显著提高心脏功能,减少心肌纤维化,并改变肠道微生物群的组成,导致酸化拟杆菌(Bacteroides acidifaciens, BA)显著增加。TRPV4缺失也上调紧密连接蛋白(Zonula occluden -1 (ZO-1), Occludin和Claudin-1)并降低血清脂多糖水平。此外,将TRPV4基因敲除的DCM供者的粪便微生物群移植到DCM受体中,在小鼠中复制了这些心脏保护作用,给予BA可改善心功能并减轻纤维化。我们的研究表明,TRPV4基因缺失的心脏保护作用与肠道微生物组的变化有关,突出了TRPV4、肠道和心脏之间的联系在DCM的疾病机制和潜在治疗策略中的重要性。
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引用次数: 0
FMO2 expression confers cardioprotection in doxorubicin therapy while preserving antitumor activity FMO2表达在阿霉素治疗中赋予心脏保护作用,同时保持抗肿瘤活性
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-08-02 DOI: 10.1016/j.yjmcc.2025.07.018
Shuyuan Sheng , Xianpeng Wu , Changchen Xiao , Jiamin Li , Changle Ke , Xinyang Hu , Cheng Ni

Background

Doxorubicin (DOX) is a widely used anthracycline chemotherapeutic agent, but its clinical application is limited by severe side effects, particularly DOX-induced cardiomyopathy (DIC) which is closely associated with oxidative stress, DNA damage and, subsequent apoptosis. Flavin-containing monooxygenase 2 (FMO2), a cardiac-enriched enzyme, catalyzes NADPH-dependent oxidative metabolism of diverse pharmaceuticals. Our previous work demonstrated that FMO2 expression confers cardioprotective effects against ischemic cardiomyopathy; however, the role of FMO2 in DIC has not been demonstrated.

Methods

DIC was induced in wild-type, FMO2−/−, and cardiomyocyte-specific FMO2-overexpressing mice. Neonatal rat ventricular myocytes were assessed following adenoviral-mediated FMO2 knockdown or overexpression. Transcriptome profiling and chromatin analysis elucidated the mechanism involving FMO2-mediated attenuation of DOX-induced DNA damage. A xenograft model was used to evaluate the impact of FMO2 on DOX's antitumor efficacy.

Results

FMO2 expression was suppressed in heart following DIC. Genetic ablation of FMO2 exacerbated DIC, whereas cardiomyocyte-specific FMO2 overexpression mitigated DOX-induced cardiac injury. Mechanistically, FMO2 reduced DOX-induced DNA damage by stabilizing chromatin-associated X-ray repair cross-complementing protein 4-like factor (XLF), thereby promoting DNA repair. Furthermore, FMO2 expression did not compromise DOX's antitumor efficacy.

Conclusions

FMO2 expression confers cardiac protection against DIC by stabilizing chromatin-associated XLF to facilitate DNA repair. Critically, cardiac FMO2 expression preserves DOX's antitumor efficacy, establishing it as a potential target for DIC management.
多柔比星(DOX)是一种广泛使用的蒽环类化疗药物,但其严重的副作用限制了其临床应用,特别是DOX诱导的心肌病(DIC)与氧化应激、DNA损伤和随后的细胞凋亡密切相关。含黄素单加氧酶2 (FMO2)是一种心脏富集酶,可催化多种药物的nadph依赖性氧化代谢。我们之前的研究表明,FMO2表达对缺血性心肌病具有心脏保护作用;然而,FMO2在DIC中的作用尚未得到证实。方法在野生型、FMO2−/−和心肌细胞特异性FMO2过表达小鼠中诱导dic。在腺病毒介导的FMO2敲低或过表达后,对新生大鼠心室肌细胞进行了评估。转录组分析和染色质分析阐明了fmo2介导的dox诱导DNA损伤衰减的机制。采用异种移植模型评价FMO2对DOX抗肿瘤效果的影响。结果DIC后心肌组织fmo2表达受到抑制。FMO2基因消融加重DIC,而心肌细胞特异性FMO2过表达减轻dox诱导的心脏损伤。机制上,FMO2通过稳定染色质相关x射线修复交叉互补蛋白4样因子(XLF)减少dox诱导的DNA损伤,从而促进DNA修复。此外,FMO2的表达并不影响DOX的抗肿瘤效果。结论sfmo2表达通过稳定染色质相关的XLF促进DNA修复,对DIC具有保护作用。关键是,心脏FMO2表达保留了DOX的抗肿瘤功效,使其成为DIC治疗的潜在靶点。
{"title":"FMO2 expression confers cardioprotection in doxorubicin therapy while preserving antitumor activity","authors":"Shuyuan Sheng ,&nbsp;Xianpeng Wu ,&nbsp;Changchen Xiao ,&nbsp;Jiamin Li ,&nbsp;Changle Ke ,&nbsp;Xinyang Hu ,&nbsp;Cheng Ni","doi":"10.1016/j.yjmcc.2025.07.018","DOIUrl":"10.1016/j.yjmcc.2025.07.018","url":null,"abstract":"<div><h3>Background</h3><div>Doxorubicin (DOX) is a widely used anthracycline chemotherapeutic agent, but its clinical application is limited by severe side effects, particularly DOX-induced cardiomyopathy (DIC) which is closely associated with oxidative stress, DNA damage and, subsequent apoptosis. Flavin-containing monooxygenase 2 (FMO2), a cardiac-enriched enzyme, catalyzes NADPH-dependent oxidative metabolism of diverse pharmaceuticals. Our previous work demonstrated that FMO2 expression confers cardioprotective effects against ischemic cardiomyopathy; however, the role of FMO2 in DIC has not been demonstrated.</div></div><div><h3>Methods</h3><div>DIC was induced in wild-type, FMO2<sup>−/−</sup>, and cardiomyocyte-specific FMO2-overexpressing mice. Neonatal rat ventricular myocytes were assessed following adenoviral-mediated FMO2 knockdown or overexpression. Transcriptome profiling and chromatin analysis elucidated the mechanism involving FMO2-mediated attenuation of DOX-induced DNA damage. A xenograft model was used to evaluate the impact of FMO2 on DOX's antitumor efficacy.</div></div><div><h3>Results</h3><div>FMO2 expression was suppressed in heart following DIC. Genetic ablation of FMO2 exacerbated DIC, whereas cardiomyocyte-specific FMO2 overexpression mitigated DOX-induced cardiac injury. Mechanistically, FMO2 reduced DOX-induced DNA damage by stabilizing chromatin-associated X-ray repair cross-complementing protein 4-like factor (XLF), thereby promoting DNA repair. Furthermore, FMO2 expression did not compromise DOX's antitumor efficacy.</div></div><div><h3>Conclusions</h3><div>FMO2 expression confers cardiac protection against DIC by stabilizing chromatin-associated XLF to facilitate DNA repair. Critically, cardiac FMO2 expression preserves DOX's antitumor efficacy, establishing it as a potential target for DIC management.</div></div>","PeriodicalId":16402,"journal":{"name":"Journal of molecular and cellular cardiology","volume":"207 ","pages":"Pages 1-12"},"PeriodicalIF":4.7,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Cardiomyocyte Janus kinase 1 (JAK1) signaling is required for cardiac homeostasis and cytokine-dependent activation of STAT3 心肌细胞Janus激酶1 (JAK1)信号是心脏稳态和STAT3细胞因子依赖性激活所必需的。
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-07-29 DOI: 10.1016/j.yjmcc.2025.07.017
Arasakumar Subramani , Kobina Essandoh , Michael Y. Young , Francesca H. Marino , James P. Teuber , Kay-Uwe Wagner , Matthew J. Brody
Despite the essential role of inflammation in the pathogenesis of heart failure and other chronic cardiovascular diseases, how cardiomyocytes sense and respond to the inflammatory milieu is not well understood. Cytokine receptors respond to circulating glycoprotein 130 (gp130) family cytokines, such as interleukin-6 (IL-6) and oncostatin M (OSM), by signaling through Janus kinases (JAK) to ultimately elicit phosphorylation-dependent nuclear translocation and transcriptional activity of signal transducer and activator of transcription (STAT) proteins. JAK1 is particularly important for STAT3-dependent cytokine production and macrophage recruitment by cardiomyocytes and STAT3 promotes cardiac hypertrophy and remodeling in response to pressure overload or angiotensin-II but is protective during ischemic injury. However, the roles of JAK1 signaling in cardiac homeostasis and cardiomyocyte cytokine sensing and responsivity remain unclear. To assess the functions of JAK1 in cardiac physiology, we generated mice with cardiomyocyte-specific deletion of JAK1 and evaluated cardiac structure and function, myocardial remodeling, and intracellular signal transduction. Loss of JAK1 in cardiomyocytes results in dilated cardiomyopathy by 6 months of age, indicating cytokine receptor signaling through JAK1 is essential for cardiac physiology. Cardiomyopathy in aged mice lacking cardiomyocyte JAK1 was characterized by substantial myocardial fibrosis. Transcriptomics and gene expression analyses identified JAK1-dependent cytokine-inducible target genes in adult cardiomyocytes as putative effectors of JAK1-STAT3 in the cardiac stress response. JAK1-deficient adult cardiomyocytes were resistant to phosphorylation and nuclear translocation of STAT3 and transcriptional reprogramming in response to OSM. Collectively these data indicate cardiomyocyte JAK1 kinase activity is required for proper cardiac maturation and homeostasis and is indispensable for STAT3 activation and transcriptional responses to OSM.
尽管炎症在心力衰竭和其他慢性心血管疾病的发病机制中起着至关重要的作用,但心肌细胞如何感知和响应炎症环境尚不清楚。细胞因子受体响应循环糖蛋白130 (gp130)家族细胞因子,如白介素-6 (IL-6)和肿瘤抑制素M (OSM),通过Janus激酶(JAK)发出信号,最终引发磷酸化依赖的核易位和信号传导和转录激活因子(STAT)蛋白的转录活性。JAK1对于STAT3依赖性细胞因子的产生和心肌细胞的巨噬细胞募集尤为重要,STAT3在压力过载或血管紧张素- ii的反应中促进心脏肥大和重塑,但在缺血性损伤时具有保护作用。然而,JAK1信号在心脏稳态和心肌细胞细胞因子感知和反应中的作用尚不清楚。为了评估JAK1在心脏生理学中的功能,我们制造了心肌细胞特异性缺失JAK1的小鼠,并评估了心脏结构和功能、心肌重塑和细胞内信号转导。心肌细胞中JAK1的缺失导致6 月龄时扩张型心肌病,表明细胞因子受体通过JAK1信号传导对心脏生理至关重要。心肌细胞JAK1缺失的老年小鼠心肌病以心肌纤维化为特征。转录组学和基因表达分析发现,成人心肌细胞中jak1依赖性细胞因子诱导靶基因可能是心脏应激反应中JAK1-STAT3的效应因子。在OSM的作用下,jak1缺陷的成人心肌细胞对STAT3的磷酸化和核易位以及转录重编程具有抗性。总的来说,这些数据表明心肌细胞JAK1激酶活性是心脏成熟和稳态所必需的,也是STAT3激活和OSM转录反应所必需的。
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引用次数: 0
Identification of sus-PSMB7_0001 as a potential pro-angiogenic circular RNA in neonatal pig hearts 新生猪心脏中sus-PSMB7_0001作为潜在促血管生成环状RNA的鉴定
IF 4.7 2区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2025-07-29 DOI: 10.1016/j.yjmcc.2025.07.016
Haiwang Shi , Pengsheng Li , Hannah Prachyl, Rebecca Thomas, Ling Tang, Wuqiang Zhu
While circular RNAs (circRNAs) regulating angiogenesis have been identified in fish and rodent hearts, their expression profiles in pig hearts remain largely unknown. This study aims to identify circRNAs that regulate angiogenesis in postnatal pig hearts. Total RNA sequencing data on pig heart tissues collected on postnatal days 1 (P1), 3 (P3), 7 (P7) and 28 (P28) were previously reported. This study analyzed conserved circRNAs associated with angiogenesis in the database. Functional studies were conducted in human umbilical vein endothelial cells (HUVECs) and hiPSC-derived endothelial cells (hiPSC-ECs). siRNA-mediated knockdown of circRNAs and miRNAs was performed to validate their functions in regulating angiogenesis. Fluorescence in situ hybridization was used to examine circRNA localization. Sus-PSMB7_0001 expression increased in pig hearts at P7 and P28 compared to P1 and P3. Knockdown of hsa-PSMB7_0025 (the human orthologue of sus-PSMB7_0001) impaired DNA synthesis, mitosis, migration, and tube formation in HUVECs and hiPSC-ECs. hsa-PSMB7_0025 negatively regulated hsa-miR-490-3p. Activation of hsa-miR-490-3p inhibited hiPSC-EC proliferation, while its inhibition promoted proliferation. Inhibition of miR-490-3p upregulated hsa-PSMB7_0025. miR-490-3p regulates five downstream effectors (TP53BP1, TMOD3, CDYL2, FOXO1, and TGFBR1) involved in cell cycle and vascular function. These findings suggest circRNA sus-PSMB7_0001 is a potential pro-angiogenic molecule in neonatal pig hearts.
虽然已经在鱼类和啮齿动物心脏中发现了调节血管生成的环状rna (circRNAs),但它们在猪心脏中的表达谱在很大程度上仍然未知。这项研究的目的是确定在出生后的猪心脏中调节血管生成的环状rna。猪出生后第1天(P1)、第3天(P3)、第7天(P7)和第28天(P28)采集的心脏组织的总RNA测序数据此前有报道。本研究分析了数据库中与血管生成相关的保守环状rna。在人脐静脉内皮细胞(HUVECs)和hipsc衍生的内皮细胞(hiPSC-ECs)中进行了功能研究。通过sirna介导的circrna和mirna的敲低来验证它们在调节血管生成中的功能。荧光原位杂交检测circRNA的定位。与P1和P3相比,Sus-PSMB7_0001在猪心脏P7和P28的表达增加。hsa-PSMB7_0025 (sus-PSMB7_0001的人类同源物)的敲低会损害HUVECs和hipsc - ec中DNA的合成、有丝分裂、迁移和管的形成。hsa-PSMB7_0025负向调控hsa-miR-490-3p。激活hsa-miR-490-3p抑制hiPSC-EC的增殖,而抑制hsa-miR-490-3p则促进增殖。抑制miR-490-3p上调hsa-PSMB7_0025。miR-490-3p调控5种下游效应物(TP53BP1、TMOD3、CDYL2、FOXO1和TGFBR1)参与细胞周期和血管调节。这些发现表明circRNA sus-PSMB7_0001是新生猪心脏中潜在的促血管生成分子。
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引用次数: 0
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Journal of molecular and cellular cardiology
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