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preadipocyte AND adipogenesis

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https://www.readbyqxmd.com/read/28715395/expansion-and-adipogenesis-induction-of-adipocyte-progenitors-from-perivascular-adipose-tissue-isolated-by-magnetic-activated-cell-sorting
#1
Kyan Thelen, Nadia Ayala-Lopez, Stephanie W Watts, G Andres Contreras
Expansion of Perivascular Adipose Tissue (PVAT), a major regulator of vascular function through paracrine signaling, is directly related to the development of hypertension during obesity. The extent of hypertrophy and hyperplasia depends on depot location, sex, and the type of Adipocyte Progenitor Cell (APC) phenotypes present. Techniques used for APC and preadipocytes isolation in the last 10 years have drastically improved the accuracy at which individual cells can be identified based on specific cell surface markers...
June 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28712872/suppression-of-cd36-attenuates-adipogenesis-with-a-reduction-of-p2x7-expression-in-3t3-l1-cells
#2
Huanqing Gao, Danyang Li, Ping Yang, Lei Zhao, Li Wei, Yaxi Chen, Xiong Z Ruan
Adipogenesis is a process of differentiation from preadipocyte into adipocyte, and is regulated by several transcription factors, including the peroxisome proliferator-activated receptor gamma (PPARγ) and the CCAAT-enhancer-binding protein alpha (C/EBPα). CD36 is a membrane protein which contributes to the metabolic disorders such as obesity. Although the previous study demonstrated CD36 participated in the progression of adipogenesis, the mechanism is still unclear. We report here that knockdown of CD36 expression by CD36 small interfering RNA (siRNA) resulted in a reduction of adipocyte differentiation and adipogenic protein expression...
July 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28708578/hyperglycemia-and-advanced-glycation-end-products-ages-suppress-the-differentiation-of-3t3-l1-preadipocytes
#3
Chia-Chu Chang, Chen-Yu Chen, Geen-Dong Chang, Ting-Huan Chen, Woan-Ling Chen, Hui-Chin Wen, Chih-Yang Huang, Chung-Ho Chang
Aging is characterized by mild hyperglycemia and accumulation of advanced glycation end products (AGEs). Effects of chronic exposure to hyperglycemia or AGEs on the adipogenic differentiation of 3T3-L1 preadipocytes remain unclear. We examined the chronic effect of AGEs and high glucose on the differentiation of 3T3-L1 cells by culturing 3T3-L1 cells in the presence of AGEs or 25 mM glucose for 1 month. Chronic incubation of 3T3-L1 cells with AGEs or high glucose blocked their differentiation into mature adipocytes as evidenced by reduced levels of adipocyte markers such as accumulated oil droplets, GPDH, aP2, adiponectin and of adipogenesis regulators PPARγ and C/EBPα...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28708070/mir-206-3p-inhibits-3t3-l1-cell-adipogenesis-via-the-c-met-pi3k-akt-pathway
#4
Renqiao Tang, Feifei Ma, Wei Li, Shengrong Ouyang, Zhuo Liu, Jianxin Wu
MicroRNAs (miRNAs) are important post-transcriptional regulators during adipocyte adipogenesis. MiR-206-3p, a tissue-specific miRNA, is absent in white adipocytes. In this study, we examined the roles of mmu-miR-206-3p in the adipogenic differentiation of 3T3-L1 preadipocytes. The miR-206-3p expression has shown an apparent decreasing trend after induction, and sustained low expression throughout the differentiation of 3T3-L1 cells. miR-206-3p blocked the adipogenic differentiation of 3T3-L1 cells by attenuating c-Met expression; the inhibition effect of miR-206 to the adipogenic differentiation can be counteracted by restoring c-Met expression...
July 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28699004/a-delayed-proinflammatory-response-of-human-preadipocytes-to-pcb126-is-dependent-on-the-aryl-hydrocarbon-receptor
#5
Francoise A Gourronc, Larry W Robertson, Aloysius J Klingelhutz
Inflammation in adipose tissue is recognized as a causative factor in the development of type II diabetes. Adipocyte hypertrophy as well as bacterial and environmental factors have been implicated in causing inflammation in mature adipocytes. Exposure to persistent organic pollutants such as polychlorinated biphenyls (PCBs) has been associated with the development of type II diabetes. We show here that PCB126, a dioxin-like PCB, activates a robust proinflammatory state in fat cell precursors (preadipocytes)...
July 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28673084/transcriptome-landscape-of-porcine-intramuscular-adipocytes-during-differentiation
#6
Delin Mo, Kaifan Yu, Hu Chen, Luxi Chen, Xiaohong Liu, Zuyong He, Peiqing Cong, Yaosheng Chen
Adipocyte differentiation process, controlled by a tightly regulated transcriptional cascade, contributes partly to determine intramuscular adipose tissue (IMAT) mass which is associated with meat quality in food animals, and obesity and related metabolic complications in human. Thus, this study aimed to characterize genes critical for intramuscular preadipocyte differentiation. Primary intramuscular preadipocytes were isolated from pigs, and mRNA profiles were performed in several key points (0d, 4h, 8h, 1d, 2d, 6d) during adipogenesis using microarrays...
July 4, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28668964/glp-1-glp-1r-signaling-in-regulation-of-adipocyte-differentiation-and-lipogenesis
#7
Jicui Chen, Huichen Zhao, Xiaoli Ma, Yuchao Zhang, Sumei Lu, Yangang Wang, Chen Zong, Dandan Qin, Yuanmei Wang, Yingfeng Yingfeng Yang, Xiangdong Wang, Yuantao Liu
BACKGROUND/AIMS: The aim of this study was to determine the direct role of liraglutide (LG) in adipogenesis and lipid metabolism. METHODS: Lipid accumulation was evaluated by oil red O staining, quantitative real-time PCR (qPCR) was performed to determine glucagon-like peptide 1 receptor (GLP-1R), fatty acid synthase (FASN) and adipose triglyceride lipase (ATGL) expression in 3T3-L1 preadipocytes, differentiated adipocytes and in adipose tissues from mice. The effects of LG on 3T3-L1 adipogenesis and lipid metabolism were analyzed with qPCR, Western Blotting, oil red O staining, immunohistochemistry (IHC) and immunofluorescence (IF)...
June 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28668300/lipid-droplet-growth-and-adipocyte-development-mechanistically-distinct-processes-connected-by-phospholipids
#8
REVIEW
Yanfei Qi, Lei Sun, Hongyuan Yang
The differentiation of preadipocytes into mature adipocytes is accompanied by the growth and formation of a giant, unilocular lipid droplet (LD). Mechanistically however, LD growth and adipogenesis are two different processes. Recent studies have uncovered a number of proteins that are able to regulate both LD dynamics and adipogenesis, such as SEIPIN, LIPIN and CDP-Diacylglycerol Synthases. It appears that phospholipids, phosphatidic acid in particular, play a critical role in both LD budding/growth and adipocyte development...
June 28, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28659738/rosmarinic-acid-suppresses-adipogenesis-lipolysis-in-3t3-l1-adipocytes-lipopolysaccharide-stimulated-tumor-necrosis-factor-%C3%AE-secretion-in-macrophages-and-inflammatory-mediators-in-3t3-l1-adipocytes
#9
Yehua Rui, Lingxia Tong, Jinbo Cheng, Guiping Wang, Liqiang Qin, Zhongxiao Wan
Background: Rosmarinic acid (RA) is a natural phenol carboxylic acid with many promising biological effects. It may be a suitable candidate for improving obesity-related adipose tissue dysfunction. Objective: We aimed to investigate the therapeutic use of RA as an anti-obesity agent by measuring its effects on adipogenesis, lipolysis, and messenger RNA (mRNA) expression of major adipokines in 3T3-L1 adipocytes; and its effects on lipopolysaccharide (LPS)-induced tumor necrosis factor-α (TNF-α) secretion in macrophages and inflammatory mediators in 3T3-L1 adipocytes incubated with macrophage-conditioned medium (MCM)...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28613919/hypercapnia-accelerates-adipogenesis-a-novel-role-of-high-co2-in-exacerbating-obesity
#10
Ryota Kikuchi, Takao Tsuji, Osamu Watanabe, Kazuhiro Yamaguchi, Kinya Furukawa, Hiroyuki Nakamura, Kazutetsu Aoshiba
Obesity is a major risk factor for the development of obstructive sleep apnea (OSA) and obesity hypoventilation syndrome (OHS), which manifest as intermittent hypercapnia and sustained plus intermittent hypercapnia, respectively. In this study, we investigated whether CO2 affects adipocyte differentiation (adipogenesis) and maturation (hypertrophy). Human visceral or subcutaneous preadipocytes were grown to confluence and then induced to differentiate to adipocytes under hypocapnia, normocapnia, and hypercapnia with or without hypoxia...
June 14, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28611394/identification-of-the-ectoenzyme-cd38-as-a-marker-of-committed-preadipocytes
#11
A Carrière, Y Jeanson, J-A Côté, C Dromard, A Galinier, S Menzel, C Barreau, S Dupuis-Coronas, E Arnaud, A Girousse, V Cuminetti, J Paupert, B Cousin, C Sengenes, F Koch-Nolte, A Tchernof, L Casteilla
BACKGROUND/OBJECTIVES: Characterisation of the adipocyte cellular lineage is required for a better understanding of white adipose tissue homoeostasis and expansion. Although several studies have focused on the phenotype of the most immature adipocyte progenitors, very few tools exist to identify committed cells. In haematopoiesis, the CD38 ectoenzyme is largely used to delineate various stages of stem cell lineage commitment. We hypothesise that this marker could be used to identify committed preadipocytes...
June 14, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28607454/insulin-sparing-and-fungible-effects-of-e4orf1-combined-with-an-adipocyte-targeting-sequence-in-mouse-models-of-type-1-and-type-2-diabetes
#12
I-S Yoon, S Park, R-H Kim, H L Ko, J-H Nam
Obesity impairs glycemic control and causes insulin resistance and type 2 diabetes. Adenovirus 36 (Ad36) infection can increase the uptake of excess glucose from blood into adipocytes by increasing GLUT4 translocation through the Ras-Akt signaling pathway, which bypasses PI3K-Akt-mediated insulin receptor signaling. E4orf1, a viral gene expressed early during Ad36 infection, is responsible for this insulin-sparing effect and may be an alternative target for improving insulin resistance. To deliver the gene to adipocytes only, we connected the adipocyte-targeting sequence (ATS) to the 5' end of E4orf1 (ATS-E4orf1)...
June 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28606512/heme-oxygenase-1-mediates-anti-adipogenesis-effect-of-raspberry-ketone-in-3t3-l1-cells
#13
Yung-Chieh Tsai, Bo-Cheng Yang, Wen-Huang Peng, Yen-Mei Lee, Mao-Hsiung Yen, Pao-Yun Cheng
BACKGROUND: Obesity is caused by excessive accumulation of body fat and is closely related to complex metabolic diseases. Raspberry ketone (RK), a major aromatic compound in red raspberry, was recently reported to possess anti-obesity effects. However, its mechanisms are unclear. AIM: Adipogenesis plays a critical role in obesity and, therefore, this study aimed to investigate the effect and mechanisms of action of RK on adipogenesis in 3T3-L1 preadipocytes. MATERIALS AND METHODS: 3T3-L1 preadipocytes were differentiated in medium containing insulin, dexamethasone, and 1-methyl-3-isobutylxanthine...
July 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28606260/-the-stepwise-establishment-of-standardized-treatment-for-the-thyroid-eye-disease
#14
J Qian
Thyroid associated ophthalmopathy is a complex autoimmune disease characterized by inflammation of the orbital tissue, hyaluronan deposition and tissue remodeling due to a skewed production of preadipocytic fibroblasts and increased adipogenesis in the late stage. Its progression is strongly related to the functional status of thyroid. So far, there is no consensus on staging, grading and treatment worldwide owning to the complexity of its clinical manifestations and therapies. However, it is of great importance to accurately judge its status and make individualized therapeutic regimen...
June 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28602994/fish-collagen-peptide-inhibits-the-adipogenic-differentiation-of-preadipocytes-and-ameliorates-obesity-in-high-fat-diet-fed-mice
#15
Eun Ji Lee, Jinwoo Hur, Sun Ah Ham, Yeonji Jo, SangYoon Lee, Mi-Jung Choi, Han Geuk Seo
Bioactivities of fish collagen peptide are now being elucidated in diverse biological systems. Here, we investigated the effect of fish collagen peptide on the adipogenic differentiation of 3T3-L1 preadipocytes and in obese mice fed a high fat diet (HFD). Subcritical water-hydrolyzed fish collagen peptide (SWFCP) significantly inhibited lipid accumulation during the differentiation of 3T3-L1 preadipocytes, which was accompanied by decreased expression of CCAAT-enhancer-binding protein-α (C/EBP-α), peroxisome proliferator-activated receptor-γ (PPAR-γ), and adipocyte protein 2 (aP2) genes, key regulators of differentiation and maintenance of adipocytes...
June 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28595985/curcumin-inhibits-adipogenesis-induced-by-benzyl-butyl-phthalate-in-3t3-l1-cells
#16
Satoru Sakuma, Maki Sumida, Yukiko Endoh, Ayaka Kurita, Ayana Yamaguchi, Tomoki Watanabe, Tetsuya Kohda, Yui Tsukiyama, Yohko Fujimoto
Phthalates are a group of endocrine disrupting chemicals and may have contributed to the recent global obesity health crisis. Increased adipogenesis via the peroxisome proliferator-activated receptor γ (PPARγ)-CCAAT-enhancer binding protein α (C/EBPα) pathway could be one critical mechanism responsible for phthalate-induced weight gain. On the other hand, curcumin has been shown to inhibit adipogenesis in cells and animal models. The present study was undertaken to evaluate, for the first time, whether curcumin could reduce adipogenesis induced by benzyl butyl phthalate (BBP) via downregulation of the PPARγ-C/EBPα pathway...
June 10, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28582464/total-control-of-fat-cells-from-adipogenesis-to-apoptosis-using-a-xanthene-analog
#17
Ching-Hsuan Tung, Myung Shin Han, Jianjun Qi
Overcrowded adipocytes secrete excess adipokines and cytokines under stress, which results in a deregulated metabolism. This negative response to stress increases the possibility of obesity and several of its associated diseases, such as cancer and atherosclerosis. Therefore, a reduction in the number of adipocytes may be a rational strategy to relieve the undesired expansion of adipose tissue. A newly synthesized xanthene analog, MI-401, was found to have two distinct effects on the regulation of the adipocyte's life cycle...
2017: PloS One
https://www.readbyqxmd.com/read/28581876/hypolipidemic-activity-of-quercus-acutissima-fruit-ethanol-extract-is-mediated-by-inhibition-of-acetylation
#18
Jin-Taek Hwang, Hyo-Kyoung Choi, Sung Hee Kim, Sangwon Chung, Haeng Jeon Hur, Jae Ho Park, Min-Yu Chung
The acetylation of histone and nonhistone proteins is associated with adipogenesis. The objective of the present study was to investigate whether an ethanol extract of Quercus acutissima fruit (QF) exhibits antiobesity effects through inhibition of acetylation in 3T3-L1 preadipocytes and high fat diet (HFD)-fed obese mice. We observed that QF acts as a histone acetyltransferase (HAT) inhibitor and that QF (400 μg/mL) markedly inhibits the activity of p300 and CREB-binding protein. QF (200 μg/mL) significantly attenuated lipid accumulation without apparent toxicity, which is likely attributable to a decrease in the expressions of lipogenic proteins, including fatty acid synthase, peroxisome proliferator-activated receptor gamma, sterol regulatory element-binding protein 1, and CCAAT-enhancer-binding proteins alpha that were otherwise increased by MDI (a hormonal cocktail containing methyl isobutylmethylxanthine, dexamethasone, and insulin)...
June 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28580280/rasal2-deficiency-reduces-adipogenesis-and-occurrence-of-obesity-related-disorders
#19
Xiaoqiang Zhu, Simin Xie, Tian Xu, Xiaohui Wu, Min Han
OBJECTIVE: Identification of additional regulatory factors involved in the onset of obesity is important to understand the mechanisms underlying this prevailing disease and its associated metabolic disorders and to develop therapeutic strategies. Through isolation and analysis of a mutant, we aimed to uncover the function of a Ras-GAP gene, Rasal2 (Ras protein activator like 2), in the development of obesity and related metabolic disorders and to obtain valuable insights regarding the mechanism underlying the function...
June 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28580233/connecting-bone-and-fat-the-potential-role-for-sclerostin
#20
Heather Fairfield, Clifford J Rosen, Michaela R Reagan
Sclerostin (SOST), a protein secreted from mature osteocytes in response to mechanical unloading and other stimuli, inhibits the osteogenic Wnt/β-catenin pathway in mesenchymal stem cells (MSCs) impeding their ability to differentiate into mineralizing osteoblasts. PURPOSE: This review summarizes the crosstalk between adipose tissue and bone. It also reviews the origin, regulation, and role of SOST in osteogenesis and brings attention to an emerging role of this protein in the regulation of adipogenesis...
June 2017: Current Molecular Biology Reports
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