Adipocyte最新文献

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Ojeok-san enhances platinum sensitivity in ovarian cancer by regulating adipocyte paracrine IGF1 secretion. Ojeok-san通过调节脂肪细胞旁分泌IGF1分泌增强卵巢癌的铂敏感性。
IF 3.3 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2023-11-22 DOI: 10.1080/21623945.2023.2282566
Jiong Ma, Junyan Li, Xuejun Chen, Yanyan Ma
{"title":"Ojeok-san enhances platinum sensitivity in ovarian cancer by regulating adipocyte paracrine IGF1 secretion.","authors":"Jiong Ma, Junyan Li, Xuejun Chen, Yanyan Ma","doi":"10.1080/21623945.2023.2282566","DOIUrl":"10.1080/21623945.2023.2282566","url":null,"abstract":"<p><strong>Background: </strong>Platinum is a commonly used drug for ovarian cancer (OvCa) treatment, but drug resistance limits its clinical application. This study intended to delineate the effects of adipocytes on platinum resistance in OvCa.</p><p><strong>Methods: </strong>OvCa cells were maintained in the adipocyte-conditioned medium. Cell viability and apoptosis were detected by CCK-8 and flow cytometry, separately. Proliferation and apoptosis-related protein expression were assayed by western blot. The IC<sub>50</sub> values of cisplatin and carboplatin were determined using CCK-8. IGF1 secretion and expression were assayed via ELISA and western blot, respectively. A xenograft model was established, and pathological changes were detected by H&E staining. Proliferation and apoptosis-associated protein expression was assessed via IHC.</p><p><strong>Results: </strong>Adipocytes promoted the viability and repressed cell apoptosis in OvCa, as well as enhancing platinum resistance, while the addition of IGF-1 R inhibitor reversed the effects of adipocytes on proliferation, apoptosis, and drug resistance of OvCa cells. Treatment with different concentrations of Ojeok-san (OJS) inhibited the adipocyte-induced platinum resistance in OvCa cells by suppressing IGF1. The combined treatment of OJS and cisplatin significantly inhibited tumour growth <i>in vivo</i> with good mouse tolerance.</p><p><strong>Conclusion: </strong>In summary, OJS inhibited OvCa proliferation and platinum resistance by suppressing adipocyte paracrine IGF1 secretion.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2282566"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10761029/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138294411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Putative mechanism of a multivitamin treatment against insulin resistance. 多种维生素治疗胰岛素抵抗的假定机制。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-06-27 DOI: 10.1080/21623945.2024.2369777
José Antonio Palma-Jacinto, Edgar López-López, José Luis Medina-Franco, Oreth Montero-Ruíz, Isela Santiago-Roque
{"title":"Putative mechanism of a multivitamin treatment against insulin resistance.","authors":"José Antonio Palma-Jacinto, Edgar López-López, José Luis Medina-Franco, Oreth Montero-Ruíz, Isela Santiago-Roque","doi":"10.1080/21623945.2024.2369777","DOIUrl":"10.1080/21623945.2024.2369777","url":null,"abstract":"<p><p>Insulin resistance is caused by the abnormal secretion of proinflammatory cytokines in adipose tissue, which is induced by an increase in lipid accumulation in adipocytes, hepatocytes, and myocytes. The inflammatory pathway involves multiple targets such as nuclear factor kappa B, inhibitor of nuclear factor κ-B kinase, and mitogen-activated protein kinase. Vitamins are micronutrients with anti-inflammatory activities that have unclear mechanisms. The present study aimed to describe the putative mechanisms of vitamins involved in the inflammatory pathway of insulin resistance. The strategy to achieve this goal was to integrate data mining and analysis, target prediction, and molecular docking simulation calculations to support our hypotheses. Our results suggest that the multitarget activity of vitamins A, B1, B2, B3, B5, B6, B7, B12, C, D3, and E inhibits nuclear factor kappa B and mitogen-activated protein kinase, in addition to vitamins A and B12 against inhibitor of nuclear factor κ-B kinase. The findings of this study highlight the pharmacological potential of using an anti-inflammatory and multitarget treatment based on vitamins and open new perspectives to evaluate the inhibitory activity of vitamins against nuclear factor kappa B, mitogen-activated protein kinase, and inhibitor of nuclear factor κ-B kinase in an insulin-resistant context.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2369777"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11216102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141465503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
10-Gingerol reduces cytoplasmic lipid droplets and induces lipolysis in 3T3-L1 adipocytes. 10-姜酚可减少细胞质脂滴并诱导 3T3-L1 脂肪细胞的脂肪分解。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-10-10 DOI: 10.1080/21623945.2024.2411453
María Elizabeth Preciado-Ortiz, Erika Martínez-López, Trinidad García-Iglesias, Gildardo Gembe-Olivarez, Nathaly Torres-Castillo, Iris Monserrat Llamas-Covarrubias, Juan José Rivera-Valdés
{"title":"10-Gingerol reduces cytoplasmic lipid droplets and induces lipolysis in 3T3-L1 adipocytes.","authors":"María Elizabeth Preciado-Ortiz, Erika Martínez-López, Trinidad García-Iglesias, Gildardo Gembe-Olivarez, Nathaly Torres-Castillo, Iris Monserrat Llamas-Covarrubias, Juan José Rivera-Valdés","doi":"10.1080/21623945.2024.2411453","DOIUrl":"10.1080/21623945.2024.2411453","url":null,"abstract":"<p><p>Obesity is a globally prevalent metabolic disorder characterized by an increased number of adipose cells and excessive fat in adipocytes. Herbal medicines, such as ginger, have shown potential in treating obesity by inhibiting adipogenesis and reducing adipocyte hypertrophy. Ginger contains bioactive compounds, particularly gingerols, which have demonstrated anti-adipogenic and/or lipolytic effects. However, research on the effects of 10-gingerol on adipose tissue remains limited. This study aimed to evaluate the effect of 10-gingerol on lipid content, lipolysis markers, and the expression of genes related to lipid metabolism in 3T3-L1 adipocytes. Three groups were analyzed: a negative control (preadipocytes), a positive control (mature adipocytes), and a group treated with 10-gingerol (10-G). Results showed that 10-G reduced lipid accumulation by 42.16% in mature adipocytes compared to the control, without affecting cell viability. Additionally, 10-G increased glycerol release and downregulated lipogenic genes such as <i>Pparγ, Acaca, Fabp4</i>, and <i>Mtor</i>, while upregulating genes related to fatty acid oxidation, including <i>Cebpα, Cpt1a, Lipe</i>, and <i>Prkaa1</i>. In conclusion, 10-gingerol reduces lipid content in mature adipocytes by downregulating lipogenesis, increasing lipolysis, and enhancing fatty acid oxidation.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2411453"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11468046/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142387141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isolation and adipogenic differentiation of murine mesenchymal stem cells harvested from macrophage-depleted bone marrow and adipose tissue. 从去除了巨噬细胞的骨髓和脂肪组织中获得的小鼠间充质干细胞的分离和成脂分化。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-06-11 DOI: 10.1080/21623945.2024.2350751
Iram Fatima S Siddiqui, Muthu L Muthu, Dieter P Reinhardt
{"title":"Isolation and adipogenic differentiation of murine mesenchymal stem cells harvested from macrophage-depleted bone marrow and adipose tissue.","authors":"Iram Fatima S Siddiqui, Muthu L Muthu, Dieter P Reinhardt","doi":"10.1080/21623945.2024.2350751","DOIUrl":"10.1080/21623945.2024.2350751","url":null,"abstract":"<p><strong>Introduction and purpose: </strong>Mouse mesenchymal stem cells (MSCs) provide a resourceful tool to study physiological and pathological aspects of adipogenesis. Bone marrow-derived MSCs (BM-MSCs) and adipose tissue-derived MSCs (ASCs) are widely used for these studies. Since there is a wide spectrum of methods available, the purpose is to provide a focused hands-on procedural guide for isolation and characterization of murine BM-MSCs and ASCs and to effectively differentiate them into adipocytes.</p><p><strong>Methods and results: </strong>Optimized harvesting procedures for murine BM-MSCs and ASCs are described and graphically documented. Since macrophages reside in bone-marrow and fat tissues and regulate the biological behaviour of BM-MSCs and ASCs, we included a procedure to deplete macrophages from the MSC preparations. The identity and stemness of BM-MSCs and ASCs were confirmed by flow cytometry using established markers. Since the composition and concentrations of adipogenic differentiation cocktails differ widely, we present a standardized four-component adipogenic cocktail, consisting of insulin, dexamethasone, 3-isobutyl-1-methylxanthine, and indomethacin to efficiently differentiate freshly isolated or frozen/thawed BM-MSCs and ASCs into adipocytes. We further included visualization and quantification protocols of the differentiated adipocytes.</p><p><strong>Conclusion: </strong>This laboratory protocol was designed as a step-by-step procedure for harvesting murine BM-MSCs and ASCs and differentiating them into adipocytes.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2350751"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11174124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141299746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantification of cell cycle re-entry during dedifferentiation of primary adipocytes in vitro. 体外原代脂肪细胞再分化过程中细胞周期再进入的量化。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-07-11 DOI: 10.1080/21623945.2024.2376571
Ewa Bielczyk-Maczynska
{"title":"Quantification of cell cycle re-entry during dedifferentiation of primary adipocytes <i>in vitro</i>.","authors":"Ewa Bielczyk-Maczynska","doi":"10.1080/21623945.2024.2376571","DOIUrl":"10.1080/21623945.2024.2376571","url":null,"abstract":"<p><p>Dedifferentiated adipose tissue (DFAT) has been proposed as a promising source of patient-specific multipotent progenitor cells (MPPs). During induced dedifferentiation, adipocytes exhibit profound gene expression and cell morphology changes. However, dedifferentiation of post-mitotic cells is expected to enable proliferation, which is critical if enough MPPs are to be obtained. Here, lineage tracing was employed to quantify cell proliferation in mouse adipocytes subjected to a dedifferentiation-inducing protocol commonly used to obtain DFAT cells. No evidence of cell proliferation in adipocyte-derived cells was observed, in contrast to the robust proliferation of non-adipocyte cells present in adipose tissue. We conclude that proliferative MPPs derived using the ceiling culture method most likely arise from non-adipocyte cells in adipose tissue.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2376571"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11244334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A key role for P2RX5 in brown adipocyte differentiation and energy homeostasis. P2RX5 在棕色脂肪细胞分化和能量平衡中的关键作用
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-11-01 DOI: 10.1080/21623945.2024.2421745
Maria Razzoli, Seth McGonigle, Bhavani Shankar Sahu, Pedro Rodriguez, Daniel Svedberg, Loredana Rao, Chiara Ruocco, Enzo Nisoli, Bianca Vezzani, Andrea Frontini, Alessandro Bartolomucci
{"title":"A key role for P2RX5 in brown adipocyte differentiation and energy homeostasis.","authors":"Maria Razzoli, Seth McGonigle, Bhavani Shankar Sahu, Pedro Rodriguez, Daniel Svedberg, Loredana Rao, Chiara Ruocco, Enzo Nisoli, Bianca Vezzani, Andrea Frontini, Alessandro Bartolomucci","doi":"10.1080/21623945.2024.2421745","DOIUrl":"10.1080/21623945.2024.2421745","url":null,"abstract":"<p><p>Brown adipocytes are defined based on a distinct morphology and genetic signature that includes, amongst others, the expression of the Purinergic 2 Receptor X5 (P2RX5). However, the role of P2RX5 in brown adipocyte and brown adipose tissue function is poorly characterized. In the present study, we conducted a metabolic characterization of P2RX5 knockout male mice; next, we characterized this purinergic pathway in a cell-autonomous context in brown adipocytes. We then tested the role of the P2RX5 receptor agonism in metabolic responses in vivo in conditions of minimal adaptive thermogenesis requirements. Our data show that loss of P2RX5 causes reduced brown adipocyte differentiation in vitro, and browning in vivo. Lastly, we unravel a previously unappreciated role for P2RX5 agonism to exert an anti-obesity effect in the presence of enhanced brown adipose tissue recruitment in male mice housed at thermoneutrality. Altogether, our data support a role for P2RX5 in mediating brown adipocyte differentiation and function that could be further targeted for benefits in the context of adipose tissue pathology and metabolic diseases.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2421745"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11540092/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of stromal vascular fraction cell composition between Coleman fat and extracellular matrix/stromal vascular fraction gel. 比较科尔曼脂肪和细胞外基质/基质血管部分凝胶的基质血管部分细胞组成。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-06-03 DOI: 10.1080/21623945.2024.2360037
Xiaoyun Li, Guohong Zhang, Mengmeng Wang, Changhao Lu, Guangping Zhang, Zhehui Chen, Yingchang Ji
{"title":"Comparison of stromal vascular fraction cell composition between Coleman fat and extracellular matrix/stromal vascular fraction gel.","authors":"Xiaoyun Li, Guohong Zhang, Mengmeng Wang, Changhao Lu, Guangping Zhang, Zhehui Chen, Yingchang Ji","doi":"10.1080/21623945.2024.2360037","DOIUrl":"10.1080/21623945.2024.2360037","url":null,"abstract":"<p><p>As a mechanically condensed product of Coleman fat, extracellular matrix/stromal vascular fraction gel (ECM/SVF-gel) eliminates adipocytes, concentrates SVF cells, and improves fat graft retention. This study aims to compare SVF cell composition between Coleman fat and ECM/SVF-gel. Matched Coleman fat and ECM/SVF-gel of 28 healthy women were subjected to RNA-seq, followed by functional enrichment and cell-type-specific enrichment analyses, and deconvolution of SVF cell subsets, reconstructing SVF cell composition in the transcriptome level. ECM/SVF-gels had 9 upregulated and 73 downregulated differentially expressed genes (DEGs). Downregulated DEGs were mainly associated with inflammatory and immune responses, and enriched in fat macrophages. M2 macrophages, resting CD4<sup>+</sup> memory T cells, M1 macrophages, resting mast cells, and M0 macrophages ranked in the top five most prevalent immune cells in the two groups. The proportions of the principal non-immune cells (e.g., adipose-derived stem cells, pericytes, preadipocytes, microvascular endothelial cells) had no statistical differences between the two groups. Our findings reveal ECM/SVF-gels share the same dominant immune cells beneficial to fat graft survival with Coleman fat, but exhibiting obvious losses of immune cells (especially macrophages), while non-immune cells necessary for adipose regeneration might have no significant loss in ECM/SVF-gels and their biological effects could be markedly enhanced by the ECM/SVF-gel's condensed nature.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2360037"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152101/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141199244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Are weight loss and metabolic outcomes of bariatric surgery influenced by candidate glucocorticoid receptor gene polymorphisms? A prospective study. 减肥手术的减重和代谢结果是否受糖皮质激素受体候选基因多态性的影响?一项前瞻性研究。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-07-09 DOI: 10.1080/21623945.2024.2369776
Zohaib Iqbal, Senthil Kandaswamy Vasan, Helene Fachim, John Warner-Levy, Rachelle P Donn, Basil J Ammori, Adrian H Heald, Handrean Soran, Akheel A Syed
{"title":"Are weight loss and metabolic outcomes of bariatric surgery influenced by candidate glucocorticoid receptor gene polymorphisms? A prospective study.","authors":"Zohaib Iqbal, Senthil Kandaswamy Vasan, Helene Fachim, John Warner-Levy, Rachelle P Donn, Basil J Ammori, Adrian H Heald, Handrean Soran, Akheel A Syed","doi":"10.1080/21623945.2024.2369776","DOIUrl":"10.1080/21623945.2024.2369776","url":null,"abstract":"<p><strong>Background: </strong>Bariatric surgery is the most effective treatment for severe obesity. There can be variation in the degree of weight reduction following bariatric surgery. It is unknown whether single nucleotide polymorphisms (SNPs) in the glucocorticoid receptor locus (GRL) affect postoperative weight loss and metabolic outcomes.</p><p><strong>Materials/methods: </strong>We studied the association between selected candidate SNPs and postoperative weight loss and metabolic outcomes in patients with severe obesity undergoing bariatric surgery. The polymorphisms rs41423247 (Bcl1), rs56149945 (N363S) and rs6189/rs6190 (ER22/23EK) were analysed.</p><p><strong>Results: </strong>The 139 participants included 95 women (68.3%) and had a median (interquartile range) age of 53.0 (46.0-60.0) years and mean (SD) weight of 140.8 (28.8) kg and body mass index of 50.3 (8.6) kg/m2. At baseline, 59 patients had type 2 diabetes (T2D), 60 had hypertension and 35 had obstructive sleep apnoea syndrome treated with continuous positive airway pressure (CPAP). 84 patients (60.4%) underwent gastric bypass and 55 (39.6%) underwent sleeve gastrectomy. There were no significant differences in weight loss, glycated haemoglobin (HbA1c) or lipid profile categorized by genotype status, sex or median age. There was significant weight reduction after bariatric surgery with a postoperative BMI of 34.1 (6.8) kg/m2 at 24 months (<i>p</i> < 0.001).</p><p><strong>Conclusion: </strong>While GRL polymorphisms with a known deleterious effect on adipose tissue mass and function may have a small, additive effect on the prevalence of obesity and related metabolic disorders in the population, we suggest that the relatively weak biological influence of these SNPs is readily overcome by bariatric surgery.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2369776"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11238915/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An improved in vitro 3T3-L1 adipocyte model of inflammation and insulin resistance. 改进的体外 3T3-L1 脂肪细胞炎症和胰岛素抵抗模型。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-10-17 DOI: 10.1080/21623945.2024.2414919
Ifeoluwa A Odeniyi, Bulbul Ahmed, Benjamin Anbiah, Grace Hester, Peter T Abraham, Elizabeth A Lipke, Michael W Greene
{"title":"An improved <i>in vitro</i> 3T3-L1 adipocyte model of inflammation and insulin resistance.","authors":"Ifeoluwa A Odeniyi, Bulbul Ahmed, Benjamin Anbiah, Grace Hester, Peter T Abraham, Elizabeth A Lipke, Michael W Greene","doi":"10.1080/21623945.2024.2414919","DOIUrl":"https://doi.org/10.1080/21623945.2024.2414919","url":null,"abstract":"<p><p>Tumor necrosis factor alpha (TNF-α)/hypoxia-treated 3T3-L1 adipocytes have been used to model inflamed and insulin-resistant adipose tissue: this study examines gaps in the model. We tested whether modulating TNF-α/hypoxia treatment time could reduce cell death while still inducing inflammation and insulin resistance. Adipocytes were treated with TNF-α (12 h or 24 h) and incubated in a hypoxic chamber for 24 h. To examine maintenance of the phenotype over time, glucose and FBS were added at 24 h post initiation of treatment, and the cells were maintained for an additional 48 h. Untreated adipocytes were used as a control. Viability, insulin resistance, and inflammation were assessed using Live/Dead staining, RT-qPCR, ELISA, and glucose uptake assays. Treatment for 12 h with TNF-α in the presence of hypoxia resulted in an increase in the percentage of live cells compared to 24 h treated cells. Importantly, insulin resistance and inflammation were still induced in the 12 h treated adipocytes: the expression of the insulin sensitive and inflammatory genes was decreased and increased, respectively. In 72 h treated adipocytes, no significant differences were found in the viability, glucose uptake or insulin-sensitive and inflammatory gene expression. This study provides a modified approach to in vitro odeling adipocyte inflammation and insulin resistance.        .</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2414919"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11487959/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lipid accumulation in adipose tissue-resident iNKT cells contributes to an inflammatory phenotype. 脂肪组织驻留的 iNKT 细胞中的脂质积累导致了炎症表型。
IF 3.5 4区 生物学
Adipocyte Pub Date : 2024-12-01 Epub Date: 2024-11-01 DOI: 10.1080/21623945.2024.2421750
Imogen Morris, Frank Vrieling, Annemieke Bouwman, Rinke Stienstra, Eric Kalkhoven
{"title":"Lipid accumulation in adipose tissue-resident iNKT cells contributes to an inflammatory phenotype.","authors":"Imogen Morris, Frank Vrieling, Annemieke Bouwman, Rinke Stienstra, Eric Kalkhoven","doi":"10.1080/21623945.2024.2421750","DOIUrl":"10.1080/21623945.2024.2421750","url":null,"abstract":"<p><p>Reciprocal communication between adipocytes and immune cells is essential to maintain optimal adipose tissue (AT) functionality. Amongst others, adipocytes directly interact with invariant NKT cells (iNKT cells), which in turn secrete various cytokines. A lipid-rich microenvironment, as observed in obesity, skews this adipocyte-driven cytokine output towards a more inflammatory output. Whether a lipid-rich microenvironment also affects iNKT cells directly, however, is unknown. Here, we show that primary mouse iNKT cells isolated from AT can accumulate lipids in lipid droplets (LDs), more so than liver- and spleen-resident iNKT cells. Furthermore, a lipid-rich microenvironment increased the production of the proinflammatory cytokine IFNγ. Next, to an indirect, adipocyte-mediated cue, iNKT cells can directly respond to environmental lipid changes, supporting a potential role as nutrient sensors.</p>","PeriodicalId":7226,"journal":{"name":"Adipocyte","volume":"13 1","pages":"2421750"},"PeriodicalIF":3.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11540091/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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