Journal of Lipid Research最新文献

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Aspirin modulates generation of procoagulant phospholipids in cardiovascular disease, by regulating LPCAT3. 阿司匹林通过调节LPCAT3调节心血管疾病中促凝磷脂的生成。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-12-12 DOI: 10.1016/j.jlr.2024.100727
Majd B Protty, Victoria J Tyrrell, Ali A Hajeyah, Bethan Morgan, Daniela Costa, Yong Li, Anirban Choudhury, Rito Mitra, David Bosanquet, Alex Reed, Iuliia K Denisenko, Katsuyuki Nagata, Hideo Shindou, Benjamin F Cravatt, Alastair W Poole, Takao Shimizu, Zaheer Yousef, Peter W Collins, Valerie B O'Donnell
{"title":"Aspirin modulates generation of procoagulant phospholipids in cardiovascular disease, by regulating LPCAT3.","authors":"Majd B Protty, Victoria J Tyrrell, Ali A Hajeyah, Bethan Morgan, Daniela Costa, Yong Li, Anirban Choudhury, Rito Mitra, David Bosanquet, Alex Reed, Iuliia K Denisenko, Katsuyuki Nagata, Hideo Shindou, Benjamin F Cravatt, Alastair W Poole, Takao Shimizu, Zaheer Yousef, Peter W Collins, Valerie B O'Donnell","doi":"10.1016/j.jlr.2024.100727","DOIUrl":"10.1016/j.jlr.2024.100727","url":null,"abstract":"<p><p>Enzymatically oxygenated phospholipids (eoxPL) from lipoxygenases (LOX) or cyclooxygenase (COX) are prothrombotic. Their generation in arterial disease, and their modulation by cardiovascular therapies is unknown. Furthermore, the Lands cycle acyl-transferases that catalyze their formation are unidentified. eoxPL were measured in platelets and leukocytes from an atherosclerotic cardiovascular disease (ASCVD) cohort and retrieved human arterial thrombi from three anatomical sites. The impact of age, gender, and aspirin was characterized in platelets from healthy subjects administered low-dose aspirin. The role of lysophosphatidylcholine acyltransferase 3 (LPCAT3) in eoxPL biosynthesis was tested using an inhibitor and a cell-free assay. Platelets from ASCVD patients generated lower levels of COX-derived eoxPL but elevated 12-LOX-diacyl forms, than platelets from healthy controls. This associated with aspirin and was recapitulated in healthy subjects by aspirin supplementation. P2Y12 inhibition had no impact on eoxPL. LPCAT3 inhibition selectively prevented 12-LOX-derived diacyl-eoxPL generation. LPCAT3 activity was not directly altered by aspirin. P2Y12 inhibition or aspirin had little impact on eoxPL in leukocytes. Complex aspirin-dependent gender and seasonal effects on platelet eoxPL generation were seen in healthy subjects. Limb or coronary (ST-elevation myocardial infarction, STEMI) thrombi displayed a platelet eoxPL signature while carotid thrombi had a white cell profile. EoxPL are altered in ASCVD by a commonly used cardiovascular therapy, and LPCAT3 was identified as the acyltransferase generating aspirin-sensitive 12-LOX diacyl forms. These changes to the phospholipid composition of blood cells in humans at risk of thrombosis may be clinically significant where the procoagulant membrane plays a central role in driving elevated thrombotic risk.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100727"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11754521/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of age and diet on triglyceride metabolism in mice. 年龄和饮食对小鼠甘油三酯代谢的影响
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-11-19 DOI: 10.1016/j.jlr.2024.100706
Kathryn M Spitler, Shwetha K Shetty, Brandon S J Davies
{"title":"Effects of age and diet on triglyceride metabolism in mice.","authors":"Kathryn M Spitler, Shwetha K Shetty, Brandon S J Davies","doi":"10.1016/j.jlr.2024.100706","DOIUrl":"10.1016/j.jlr.2024.100706","url":null,"abstract":"<p><p>Both age and diet can contribute to alterations in triglyceride metabolism and subsequent metabolic disease. In humans, plasma triglyceride levels increase with age. Diets high in saturated fats can increase triglyceride levels while diets high in omega-3 fatty acids decrease triglyceride levels. Here we asked how age and long-term diet altered triglyceride metabolism in mice. We fed male and female C57Bl/6 mice a low-fat diet, a western diet (WD), or a diet high in polyunsaturated and omega-3 fatty acids (n3D) for up to 2 years. We measured survival, body composition, plasma triglyceride levels, chylomicron clearance, and oral fat, glucose, and insulin tolerance. Triglyceride levels in mice did not increase with age, regardless of diet. Oral fat tolerance increased with age, while chylomicron clearance remained unchanged. Decreased survival was observed in WD-fed mice. Interestingly, n3D-fed mice gained more lean mass and had lower insulin levels than WD-fed or LFD-fed mice. Moreover, triglyceride uptake into the hearts of n3D-fed mice was strikingly higher than in other groups. Our data indicate that in C57Bl/6 mice, age-induced changes in triglyceride metabolism differ from those observed in humans. Mice, like humans, appeared to have decreased fat absorption with age, but in mice plasma triglyceride clearance did not decrease with age, resulting in lower plasma triglyceride levels and improved fat tolerance with age. Although a chronic diet high in omega-3 fatty acids increased insulin sensitivity and triglyceride uptake specifically into the heart, how these observations are connected is unclear.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100706"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11730548/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142681877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lysophosphatidylethanolamine improves diastolic dysfunction by alleviating mitochondrial injury in the aging heart. 溶血磷脂酰乙醇胺通过减轻衰老心脏线粒体损伤改善舒张功能障碍
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-11-22 DOI: 10.1016/j.jlr.2024.100713
Guiwen Xu, Wei Xiao, Pengqi Sun, Yuanjun Sun, Xinyu Yang, Xiaomeng Yin, Yang Liu
{"title":"Lysophosphatidylethanolamine improves diastolic dysfunction by alleviating mitochondrial injury in the aging heart.","authors":"Guiwen Xu, Wei Xiao, Pengqi Sun, Yuanjun Sun, Xinyu Yang, Xiaomeng Yin, Yang Liu","doi":"10.1016/j.jlr.2024.100713","DOIUrl":"10.1016/j.jlr.2024.100713","url":null,"abstract":"<p><p>Diastolic dysfunction in aging mice is linked to mitochondrial abnormalities, including mitochondrial morphology disorders and decreases in membrane potential. Studies also show that aberrant mitochondrial lipid metabolism impairs mitochondrial function in aging cardiomyocytes. Our lipidomic analysis revealed that phosphatidylethanolamine (PE) levels were significantly decreased in aging myocardial mitochondria. Here, we investigated whether a reduction in PE levels in myocardial mitochondria contributes to mitochondrial injury as well as HFpEF pathogenesis and whether modulation of PE levels could ameliorate aging-induced HFpEF. Echocardiography was used to assess cardiac diastolic function in adult and aging mice treated with lysophosphatidylethanolamine (LPE) or saline. Mitochondrial morphologies from tissue samples were evaluated by transmission electron microscopy (TEM), while mitochondrial membrane potential and reactive oxygen species (ROS) levels were assessed using JC-1, MitoSOX, and DCFH-DA detection assays. We performed GO enrichment analysis between adult and aging mice and discovered significant enrichment in transcriptional programs associated with mitochondria and lipid metabolism. Also, mitochondrial PE levels were significantly decreased in aging cardiomyocytes. Treatment with LPE (200 μg/kg) significantly enhanced PE content in aging mice and improved the structure of mitochondria in cardiac cells. Also, LPE treatment protects against aging-induced deterioration of mitochondrial injury, as evidenced by increased mitochondrial membrane potential and decreased mitochondrial ROS. Furthermore, treatment with LPE alleviated severe diastolic dysfunction in aging mice. Taken together, our results suggest that LPE treatment enhances PE levels in mitochondria and ameliorates aging-induced diastolic dysfunction in mice through a mechanism involving improved mitochondrial structure and function.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100713"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11719853/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chiral clues to lipid identity. 脂质特性的手性线索。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-11-20 DOI: 10.1016/j.jlr.2024.100710
Ujjalkumar S Das, Garret A FitzGerald
{"title":"Chiral clues to lipid identity.","authors":"Ujjalkumar S Das, Garret A FitzGerald","doi":"10.1016/j.jlr.2024.100710","DOIUrl":"10.1016/j.jlr.2024.100710","url":null,"abstract":"","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100710"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11699315/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The steady-state level of plasma membrane ceramide is regulated by neutral sphingomyelinase 2. 中性鞘磷脂酶2调节质膜神经酰胺的稳态水平。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-12-02 DOI: 10.1016/j.jlr.2024.100719
Anne G Ostermeyer-Fay, Abhay Kanodia, Ranjana Pathak, Maria Jose Hernandez-Corbacho, Aarnoud C van der Spoel, Yusuf A Hannun, Daniel Canals
{"title":"The steady-state level of plasma membrane ceramide is regulated by neutral sphingomyelinase 2.","authors":"Anne G Ostermeyer-Fay, Abhay Kanodia, Ranjana Pathak, Maria Jose Hernandez-Corbacho, Aarnoud C van der Spoel, Yusuf A Hannun, Daniel Canals","doi":"10.1016/j.jlr.2024.100719","DOIUrl":"10.1016/j.jlr.2024.100719","url":null,"abstract":"<p><p>During the last 30 years, an increasing number of cellular functions have been reported to be regulated by the lipid ceramide. The diversity in the ceramide structure, leading to tens of ceramide species and the discrete distribution based on subcellular topology, could explain the wide variety of functions attributed to this bioactive lipid. One of these pools of ceramide resides in the plasma membrane, and several works have suggested that an increase in plasma membrane ceramide (PMCer) in response to stimulation leads to cell death and modulates cell adhesion and migration. However, there is a limitation in studying PMCer content in this location primarily due to the inability to quantify its mass. Our group recently developed a method to specifically quantitate PMCer. In this work, we interrogate what sphingolipid metabolizing enzymes are responsible for modulating the basal levels of plasma membrane ceramide. An in-silico prediction and experimental confirmation found an almost perfect correlation between the endogenous expression levels of neutral sphingomyelinase (nSMase2) and the amount of plasma membrane ceramide in unstimulated cells. Manipulating the expression levels of nSMase2, but not other candidate enzymes of ceramide metabolism, profoundly affected PMCer. Moreover, a physiologic induction of nSMase2 during cell confluence resulted in a nSMase2-dependent dramatic increase in PMCer. Together, these results identify nSMase2 as the primary enzyme to regulate plasma membrane ceramide.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100719"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11742583/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and application of an LC-MS/MS method for the combined quantification of oxysterols and bile acids. 开发和应用一种 LC-MS/MS 方法,用于氧甾醇和胆汁酸的联合定量。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-11-17 DOI: 10.1016/j.jlr.2024.100697
Martin Roumain, Giulio G Muccioli
{"title":"Development and application of an LC-MS/MS method for the combined quantification of oxysterols and bile acids.","authors":"Martin Roumain, Giulio G Muccioli","doi":"10.1016/j.jlr.2024.100697","DOIUrl":"10.1016/j.jlr.2024.100697","url":null,"abstract":"<p><p>Oxysterols and bile acids are interconnected bioactive lipids playing pivotal roles in diverse physiological and pathological processes. For this reason, they are increasingly studied together for their implications in various diseases. However, due to analytical challenges inherent to the nature of these analytes, very few methods have been developed for the simultaneous analysis of these lipids. We here report the development of a sensitive LC-MS/MS method for the combined quantification of 18 oxysterols, 11 unconjugated, 15 conjugated bile acids, and 1 bile acid precursor, using 8 isotope-labeled internal standards, addressing the need for a more comprehensive analysis of these interesting lipid families. During the method development, we investigated different extraction protocols, set up a purification step, and achieved chromatographic separation for these lipids, overcoming challenges such as the large number of analytes, isomers, and wide range of polarity across the analytes. Finally, the method was successfully applied to the analysis of preclinical and clinical samples, quantifying 12 oxysterols and 14 bile acids in human plasma, 10 oxysterols and 18 bile acids in mouse plasma from the vena cava, and 10 oxysterols and 20 bile acids in mouse plasma from the portal vein within a single chromatographic run.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100697"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11761337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142667849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The bile acid chenodeoxycholic acid associates with reduced stroke in humans and mice. 胆汁酸酚去氧胆酸与减少人类和小鼠中风有关。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-11-21 DOI: 10.1016/j.jlr.2024.100712
Vera F Monteiro-Cardoso, Xin Yi Yeo, Han-Gyu Bae, David Castano Mayan, Mariam Wehbe, Sejin Lee, Kumar Krishna-K, Seung Hyun Baek, Leon F Palomera, Lik Hang Wu, Leroy S Pakkiri, Sangeetha Shanmugam, Kai Ping Sem, Mun Geok Yew, Matthew P Parsons, Michael R Hayden, Leonard L L Yeo, Vijay K Sharma, Chester Drum, Elisa A Liehn, Sreedharan Sajikumar, Svend Davanger, Dong-Gyu Jo, Mark Y Y Chan, Benjamin Y Q Tan, Sangyong Jung, Roshni R Singaraja
{"title":"The bile acid chenodeoxycholic acid associates with reduced stroke in humans and mice.","authors":"Vera F Monteiro-Cardoso, Xin Yi Yeo, Han-Gyu Bae, David Castano Mayan, Mariam Wehbe, Sejin Lee, Kumar Krishna-K, Seung Hyun Baek, Leon F Palomera, Lik Hang Wu, Leroy S Pakkiri, Sangeetha Shanmugam, Kai Ping Sem, Mun Geok Yew, Matthew P Parsons, Michael R Hayden, Leonard L L Yeo, Vijay K Sharma, Chester Drum, Elisa A Liehn, Sreedharan Sajikumar, Svend Davanger, Dong-Gyu Jo, Mark Y Y Chan, Benjamin Y Q Tan, Sangyong Jung, Roshni R Singaraja","doi":"10.1016/j.jlr.2024.100712","DOIUrl":"10.1016/j.jlr.2024.100712","url":null,"abstract":"<p><p>Bile acids are liver-derived signaling molecules that can be found in the brain, but their role there remains largely unknown. We found increased brain chenodeoxycholic acid (CDCA) in mice with absent 12α-hydroxylase (Cyp8b1), a bile acid synthesis enzyme. In these Cyp8b1<sup>-/-</sup>, and in Wt mice administered CDCA, stroke infarct area was reduced. Elevated glutamate-induced excitotoxicity mediated by aberrant N-methyl-D-aspartate receptor (NMDAR) overactivation contributes to neuronal death in ischemic stroke. We found reduced glutamate-induced excitotoxicity in neurons from Cyp8b1<sup>-/-</sup> and CDCA-treated Wt mice. CDCA decreased NMDAR-mediated excitatory post-synaptic currents by reducing over-activation of NMDAR subunit GluN2B in Wt brains. Synaptic NMDAR activity was also decreased in Cyp8b1<sup>-/-</sup> brains. Expression and synaptic distribution of GluN2B were unaltered in Cyp8b1<sup>-/-</sup> mice, suggesting CDCA may directly antagonize GluN2B-containing NMDARs. Supporting our findings, in a case-control cohort of acute ischemic stroke patients, we found lower circulatory CDCA. Together, our data suggest that CDCA, acting in the liver-brain axis, decreases GluN2B-containing NMDAR overactivation, contributing to neuroprotection in stroke.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100712"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11721534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Porcine transient receptor potential channel 1 promotes adipogenesis and lipid deposition. 猪瞬时受体电位通道1促进脂肪形成和脂质沉积。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-12-03 DOI: 10.1016/j.jlr.2024.100718
Yu Fu, Xin Hao, Jingru Nie, Peng Shang, Xinxing Dong, Bo Zhang, Dawei Yan, Hao Zhang
{"title":"Porcine transient receptor potential channel 1 promotes adipogenesis and lipid deposition.","authors":"Yu Fu, Xin Hao, Jingru Nie, Peng Shang, Xinxing Dong, Bo Zhang, Dawei Yan, Hao Zhang","doi":"10.1016/j.jlr.2024.100718","DOIUrl":"10.1016/j.jlr.2024.100718","url":null,"abstract":"<p><p>Adipose tissue, an important organ involved in energy metabolism and endocrine, is closely related to animal meat quality and human health. Transient receptor potential channel 1 (TRPC1), an ion transporter, is adipocytes' major Ca<sup>2+</sup> entry channel. However, its function in fat deposition is poorly understood, particularly in pigs, which are both an ideal model for human obesity research and a primary meat source for human diets. In the present investigation, our findings demonstrate a prominent expression of TRPC1 within the adipose tissue of pigs with a strong fat deposition ability. Functional analysis showed that TRPC1 promotes primary preadipocyte proliferation and adipogenic differentiation. In vivo, transgenic mice expressing porcine TRPC1 exhibited aggravated high-fat diet-induced obesity, hepatic steatosis, and insulin resistance. Moreover, TRPC1 may facilitate adipogenesis via activating phosphatidylinositol 3 kinase/AKT and β-catenin signaling pathways. Our research underscores the pivotal role of porcine TRPC1 as a positive regulator in adipogenesis and lipid accumulation processes, providing a potential target for improving animal meat quality and treating obesity-related diseases in humans.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100718"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11741951/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CD14loCD301b+ macrophages gathering as a proangiogenic marker in adipose tissues. CD14loCD301b+巨噬细胞聚集在脂肪组织中作为促血管生成标志物。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-12-05 DOI: 10.1016/j.jlr.2024.100720
Yibing Lv, Yidan Zheng, Shanshan Su, Junyi Xiao, Jie Yang, Lingyun Xiong, Yanyan Guo, Xiaoqi Zhou, Nengqiang Guo, Ping Lei
{"title":"CD14<sup>lo</sup>CD301b<sup>+</sup> macrophages gathering as a proangiogenic marker in adipose tissues.","authors":"Yibing Lv, Yidan Zheng, Shanshan Su, Junyi Xiao, Jie Yang, Lingyun Xiong, Yanyan Guo, Xiaoqi Zhou, Nengqiang Guo, Ping Lei","doi":"10.1016/j.jlr.2024.100720","DOIUrl":"10.1016/j.jlr.2024.100720","url":null,"abstract":"<p><p>The role of the monocyte marker CD14 in the regulation of obesity is increasingly recognized. Our observations indicated that Cd14<sup>-/-</sup> mice exhibited a leaner body shape compared to their wild-type (WT) counterparts. And the loss of CD14 alleviated high-fat diet-induced obesity in mice. In human subjects, CD14 level was tested to be positively correlated with overweight and obesity. However, the relationship between CD14 and the development of obesity remains only partially understood. To investigate the underlying mechanisms, adipose tissues (ATs) from Cd14<sup>-/-</sup> and WT mice were subjected to deep RNA sequencing. Gene Ontology enrichment analysis revealed a significant enhancement of angiogenesis-related function in the Cd14<sup>-/-</sup> epididymal adipose tissues compared to WT counterpart, which was accompanied by an upregulation of Cd301b. Subsequent assays confirmed the enhanced angiogenesis and more accumulation of CD301b<sup>+</sup> macrophages in Cd14<sup>-/-</sup> epididymal adipose tissues. Because Igf1 expression has been suggested to be associated with Cd301b expression through pseudotime analysis, we found it was insulin-like growth factor 1 secreted from Cd14<sup>-/-</sup> macrophages that mediated the angiogenesis enhancement. Collectively, our findings indicate that CD14 deficiency increased the accumulation of CD14<sup>lo</sup>CD301b<sup>+</sup> macrophages in ATs, which may serve as a proangiogenic marker, providing novel insights into the relationship between CD14 and obesity development.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100720"},"PeriodicalIF":5.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11745947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142791565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Type I IFN induces long-chain acyl-CoA synthetase 1 to generate a phosphatidic acid reservoir for lipotoxic saturated fatty acids. I 型 IFN 可诱导长链酰基-CoA 合成酶 1 生成磷脂酸库,以储存具有脂肪毒性的饱和脂肪酸。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2025-01-01 Epub Date: 2024-12-14 DOI: 10.1016/j.jlr.2024.100730
Shelley Barnhart, Masami Shimizu-Albergine, Eyal Kedar, Vishal Kothari, Baohai Shao, Melissa Krueger, Cheng-Chieh Hsu, Jingjing Tang, Jenny E Kanter, Farah Kramer, Danijel Djukovic, Vadim Pascua, Yueh-Ming Loo, Lucrezia Colonna, Sadie J Van den Bogaerde, Jie An, Michael Gale, Karen Reue, Edward A Fisher, Sina A Gharib, Keith B Elkon, Karin E Bornfeldt
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