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adipocyte differentiation

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https://www.readbyqxmd.com/read/28929094/gestational-age-dependent-increase-of-survival-motor-neuron-protein-in-umbilical-cord-derived-mesenchymal-stem-cells
#1
Sota Iwatani, Nur Imma Fatimah Harahap, Dian Kesumapramudya Nurputra, Shinya Tairaku, Akemi Shono, Daisuke Kurokawa, Keiji Yamana, Khin Kyae Mon Thwin, Makiko Yoshida, Masami Mizobuchi, Tsubasa Koda, Kazumichi Fujioka, Mariko Taniguchi-Ikeda, Hideto Yamada, Ichiro Morioka, Kazumoto Iijima, Hisahide Nishio, Noriyuki Nishimura
BACKGROUND: Spinal muscular atrophy (SMA) is the most common genetic neurological disease leading to infant death. It is caused by loss of survival motor neuron (SMN) 1 gene and subsequent reduction of SMN protein in motor neurons. Because SMN is ubiquitously expressed and functionally linked to general RNA metabolism pathway, fibroblasts (FBs) are most widely used for the assessment of SMN expression in SMA patients but usually isolated from skin biopsy samples after the onset of overt symptoms...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28923965/sirt7-promotes-adipogenesis-in-the-mouse-by-inhibiting-autocatalytic-activation-of-sirt1
#2
Jian Fang, Alessandro Ianni, Christian Smolka, Olesya Vakhrusheva, Hendrik Nolte, Marcus Krüger, Astrid Wietelmann, Nicolas G Simonet, Juan M Adrian-Segarra, Alejandro Vaquero, Thomas Braun, Eva Bober
Sirtuins (Sirt1-Sirt7) are NAD(+)-dependent protein deacetylases/ADP ribosyltransferases, which play decisive roles in chromatin silencing, cell cycle regulation, cellular differentiation, and metabolism. Different sirtuins control similar cellular processes, suggesting a coordinated mode of action but information about potential cross-regulatory interactions within the sirtuin family is still limited. Here, we demonstrate that Sirt1 requires autodeacetylation to efficiently deacetylate targets such as p53, H3K9, and H4K16...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28923346/role-of-fibroblast-growth-factor-receptors-fgfr-and-fgfr-like-1-fgfrl1-in-mesenchymal-stromal-cell-differentiation-to-osteoblasts-and-adipocytes
#3
T E Kähkönen, K K Ivaska, M Jian, K G Büki, H K Väänänen, P L Härkönen
Fibroblast growth factors (FGF) and their receptors (FGFRs) regulate many developmental processes including differentiation of mesenchymal stromal cells (MSC). We developed two MSC lines capable of differentiating to osteoblasts and adipocytes and studied the role of FGFRs in this process. We identified FGFR2 and fibroblast growth factor receptor like-1 (FGFRL1) as possible actors in MSC differentiation with gene microarray and qRT-PCR. FGFR2 and FGFRL1 mRNA expression strongly increased during MSC differentiation to osteoblasts...
September 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28923246/klf15-regulates-in-vitro-chondrogenic-differentiation-of-human-mesenchymal-stem-cells-by-targeting-sox9
#4
Zhuoyue Song, Xiaolei Lian, Yang Wang, Yong Xiang, Guangheng Li
Mesenchymal stem cells (MSCs) are multipotent stromal cells residing in the bone marrow. MSCs have the potential to differentiate into adipocytes, chondrocytes, and other types of cells. However, the mechanism underlying MSC differentiation is still not fully understood. Here we aimed to investigate the function of the Kruppel-like factor (KLF) transcriptional factor family in regulating chondrogenic differentiation from human MSCs. Among the KLF family members, KLF15 was activated during different models of chondrogenic differentiation in a time-dependent manner...
September 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28922324/biological-properties-and-therapeutic-value-of-cryopreserved-fat-tissue
#5
Takanobu Mashiko, Szu-Hsien Wu, Koji Kanayama, Rintaro Asahi, Takako Shirado, Masanori Mori, Ataru Sunaga, Shunji Sarukawa, Hirokazu Uda, Kotaro Yoshimura
BACKGROUND: Fat grafting frequently requires multiple treatments and thus repeated liposuction to achieve treatment goals. The purpose of this study is to evaluate whether cryopreservation of adipose tissue may facilitate future fat grafting. METHODS: Lipoaspirates were harvested from six adult females and preserved using two cryopreservation methods: 1) simple cooling to -80˚C (cryo-1); or 2) programmed cooling to -190˚C (cryo-2). Fresh fat, cryo-1 fat, and cryo-2 fat were analyzed both in vitro and in vivo...
September 14, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28921681/anti-obesity-activity-of-saringosterol-isolated-from-sargassum-muticum-yendo-fensholt-extract-in-3t3-l1-cells
#6
Jung A Lee, Young-Rak Cho, Seong Su Hong, Eun-Kyung Ahn
Saringosterol, a steroid isolated from Sargassum muticum, a brown edible alga widely distributed on the seashores of southern and eastern Korea, has been shown to exhibit anti-obesity effect. In this study, we investigated the anti-obesity activity of saringosterol through various experiments. The inhibitory effect of saringosterol on adipogenesis was evaluated via Oil Red O staining in 3T3-L1 preadipocytes. After confirming that saringosterol is not cytotoxic to these cells by using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay, the effect of saringosterol on the expression of various adipogenesis-related genes was analyzed via quantitative real-time polymerase chain reaction and western blotting...
September 18, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28921615/plasticizer-di-2-ethylhexyl-phthalate-interferes-with-osteoblastogenesis-and-adipogenesis-in-a-mouse-model
#7
Chen-Yuan Chiu, Shih-Chun Sun, Chih-Kang Chiang, Ching-Chia Wang, Ding-Cheng Chan, Huang-Jen Chen, Shing-Hwa Liu, Rong-Sen Yang
Plasticizer di(2-ethylhexyl)phthalate (DEHP) can leach from medical devices such as blood storage bags and the tubing. Recently, epidemiological studies showed that phthalate metabolites levels in the urine are associated with low bone mineral density (BMD) in older women. The detailed effect and mechanism of DEHP on osteoblastogenesis and adipogenesis and bone loss remain to be clarified. Here, we investigated the effect and mechanism of DEHP and its active metabolite mono(2 -ethylhexyl)phthalate (MEHP) on osteoblastogenesis and adipogenesis...
September 16, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28920467/annals-express-association-of-subcutaneous-and-visceral-fat-with-circulating-micrornas-in-a-middle-aged-japanese-population
#8
Eiji Munetsuna, Hiroya Yamada, Yoshitaka Ando, Mirai Yamazaki, Yoshiki Tsuboi, Mari Kondo, Genki Mizuno, Hiroaki Ishikawa, Keiko Sugimoto, Keisuke Osakabe, Naohiro Ichino, Koji Ohashi, Nobuyuki Hamajima, Koji Suzuki
Purpose It has been demonstrated that circulating microRNA (miRNA) profiles are affected by physiological conditions. Several studies have demonstrated that miRNAs play important roles in the regulation of adiposity. However, few have investigated the relationship between circulating miRNAs and obesity, which has become a major public health problem worldwide. Current study investigated the association between circulating miRNAs and obesity in a Japanese population. Methods Obesity parameters, such as subcutaneous (SAT) and visceral fat (VAT) adipose tissue, body fat percentage, and body mass index (BMI) were assessed in a cross-sectional sample of 526 participants who attended health examinations in Yakumo, Japan...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28916720/glucose-availability-controls-adipogenesis-in-mouse-3t3-l1-adipocytes-via-upregulation-of-nicotinamide-metabolism
#9
Robert M Jackson, Beth A Griesel, Jami M Gurley, Luke I Szweda, Ann Louise Olson
Expansion of adipose tissue in response to a positive energy balance underlies obesity and occurs through both hypertrophy of existing cells and increased differentiation of adipocyte precursors (hyperplasia). To better understand the nutrient signals that promote adipocyte differentiation, we investigated the role of glucose availability in regulating adipocyte differentiation and maturation. 3T3-L1 preadipocytes were grown and differentiated in media containing a standard differentiation hormone cocktail and either 4 or 25mM glucose...
September 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28915506/maternal-diethylhexyl-phthalate-exposure-affects-adiposity-and-insulin-tolerance-in-offspring-in-a-pcna-dependent-manner
#10
Brian G Hunt, Yuan-Liang Wang, Min-Shan Chen, Shao-Chun Wang, Susan E Waltz
The ubiquitous plasticizer, diethylhexyl phthalate (DEHP), is a known endocrine disruptor. However, DEHP exposure effects are not well understood. Changes in industrial and agricultural practices have resulted in increased prevalence of DEHP exposure and has coincided with the heightened occurrence of metabolic syndrome and obesity. DEHP and its metabolites are detected in the umbilical cord blood of newborns; however, the prenatal and perinatal effects of DEHP exposure have not been intensively studied. Previously, we discovered that phosphorylation (p) of proliferating cell nuclear antigen (PCNA) at tyrosine 114 (Y114) is required for adipogenesis and diet-induced obesity in mice...
September 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/28915330/impact-of-adrenal-steroids-on-regulation-of-adipose-tissue
#11
Marco Infante, Andrea Armani, Caterina Mammi, Andrea Fabbri, Massimiliano Caprio
Corticosteroids are secreted by the adrenal glands and control the functions of adipose tissue via the activation of mineralocorticoid receptor (MR) and glucocorticoid receptor (GR). In turn, adipocytes release a large variety of adipokines into the bloodstream, regulating the function of several organs and tissues, including the adrenal glands, hereby controlling corticosteroid production. In adipose tissue, the activation of the MR by glucocorticoids (GC) and aldosterone affects important processes such as adipocyte differentiation, oxidative stress, autophagic flux, adipokine expression as well as local production of GC through upregulation of the enzyme 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1)...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915325/brown-and-beige-adipose-tissues-in-health-and-disease
#12
Liangyou Rui
Brown and beige adipocytes arise from distinct developmental origins. Brown adipose tissue (BAT) develops embryonically from precursors that also give to skeletal muscle. Beige fat develops postnatally and is highly inducible. Beige fat recruitment is mediated by multiple mechanisms, including de novo beige adipogenesis and white-to-brown adipocyte transdifferentiaiton. Beige precursors reside around vasculatures, and proliferate and differentiate into beige adipocytes. PDGFRα+Ebf2+ precursors are restricted to beige lineage cells, while another PDGFRα+ subset gives rise to beige adipocytes, white adipocytes, or fibrogenic cells...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915322/hormonal-regulation-of-adipogenesis
#13
Mi-Jeong Lee
Adipose tissue includes multiple anatomical depots that serve as an energy reserve that can expand or contract to maintain metabolic homeostasis. During normal growth and in response to overnutrition, adipose tissue expands by increasing the volume of preexisting adipocytes (hypertrophy) and/or by generating new adipocytes (hyperplasia) via recruitment and differentiation of adipose progenitors. This so-called healthy expansion through hyperplasia is thought to be beneficial in that it protects against obesity associated metabolic disorders by allowing for the "safe" storage of excess energy...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28912007/adventitial-adipogenic-degeneration-is-an-unidentified-contributor-to-aortic-wall-weakening-in-the-abdominal-aortic-aneurysm
#14
Stefan A Doderer, Gabor Gäbel, Vivianne B C Kokje, Bernd H Northoff, Lesca M Holdt, Jaap F Hamming, Jan H N Lindeman
OBJECTIVE: The processes driving human abdominal aortic aneurysm (AAA) progression are not fully understood. Although antiinflammatory and proteolytic strategies effectively quench aneurysm progression in preclinical models, so far all clinical interventions failed. These observations hint at an incomplete understanding of the processes involved in AAA progression and rupture. Interestingly, strong clinical and molecular associations exist between popliteal artery aneurysms (PAAs) and AAAs; however, PAAs have an extremely low propensity to rupture...
September 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28911171/sirtuin-3-promotes-adipogenesis-osteoclastogenesis-and-bone-loss-in-aging-male-mice
#15
Linh Ho, Liping Wang, Theresa M Roth, Yong Pan, Eric M Verdin, Edward C Hsiao, Robert A Nissenson
Sirtuin-3 (Sirt3) is an essential metabolic regulatory enzyme that plays an important role in mitochondrial metabolism, but its role in bone marrow and skeletal homeostasis remains largely unknown. In this study, we hypothesize that increased expression of Sirt3 plays a role in skeletal aging. Using mice that overexpress Sirt3 [i.e., Sirt3 transgenic (Sirt3Tg)], we show that Sirt3 is a positive regulator of adipogenesis and osteoclastogenesis and a negative regulator of skeletal homeostasis. Sirt3Tg mice exhibited more adipocytes in the tibia compared with control mice...
September 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28903909/identification-of-differentially-expressed-genes-between-subcutaneous-and-intramuscular-adipose-tissue-of-large-white-pig-using-rna-seq
#16
Wan-Long Huang, Xiu-Xiu Zhang, Ai Li, Xiang-Yang Miao
To explore the molecular mechanisms of lipid accumulation in different types of adipose tissue, the transcriptomes of the subcutaneous and intramuscular adipose tissues from the Large White pig were determined using RNA-seq technology and bioinformatics methods. The differential gene expression profiles were identified and analyzed with the Gene Ontology, KEGG pathway and protein-protein interaction network strategies. There were 180 differentially expressed genes between the two adipose tissues. The genes up-regulated in the subcutaneous, as compared to intramuscular, adipose tissues were mainly involved in the biological processes related to lipid metabolism...
June 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28903400/hyperglycemia-and-advanced-glycation-end-products-ages-suppress-the-differentiation-of-3t3-l1-preadipocytes
#17
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...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28901460/tumor-necrosis-factor%C3%A2-%C3%AE-and-interleukin%C3%A2-6-suppress-microrna%C3%A2-1275-transcription-in-human-adipocytes-through-nuclear-factor%C3%A2-%C3%AE%C2%BAb
#18
Yu-Feng Zhou, Zi-Yi Fu, Xiao-Hui Chen, Yan Cui, Chen-Bo Ji, Xi-Rong Guo
Obesity is a confirmed risk factor for hyperlipidemia, type‑II diabetes, hypertension, and cardiovascular disease. MicroRNAs (miRs) have emerged as an important field of study within energy metabolism and obesity. A previous study demonstrated miR‑1275 to be markedly down‑regulated during maturation of human preadipocytes. It has been reported that miR‑1275 dysregulates expression in several types of cancer and infections. Little is currently known about the regulation of miR‑1275 transcription. The aim of the current study was to explore the mechanism underlying the expression of miR‑1275 in mature human adipocytes...
August 29, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28901441/profiling-of-differentially-expressed-genes-in-adipose-tissues-of-multiple-symmetric-lipomatosis
#19
Ke Chen, Linghao Wang, Wenjun Yang, Changfa Wang, Gui Hu, Zhaohui Mo
Multiple symmetric lipomatosis (MSL) is a rare disorder characterized by aberrant multiple and symmetric subcutaneous adipose tissue accumulation in the face, neck, shoulders, back, chest and abdomen, severely affecting the quality of life of patients. At present, precise MSL etiology and pathogenesis remain to be elucidated. The present study first utilized a digital gene expression technique with a next‑generation sequencing platform to profile differentially expressed genes in three cases of MSL vs. normal control tissue...
September 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28900631/single-cell-phosphospecific-flow-cytometric-analysis-of-canine-and-murine-adipose-derived-stem-cells
#20
Harumichi Itoh, Shimpei Nishikawa, Tomoya Haraguchi, Yu Arikawa, Masato Hiyama, Toshie Iseri, Yoshiki Itoh, Munekazu Nakaichi, Yasuho Taura, Kenji Tani, Kazuhito Itamoto
This study aimed to demonstrate single-cell phosphospecific flow cytometric analysis of canine and murine adipose-derived stem/stromal cells (ADSCs). ADSCs were obtained from clinically healthy laboratory beagles and C57BL/6 mice. Cell differentiation into adipocytes, osteocytes, and chondrocytes was observed for the cultured canine ADSCs (cADSCs) and murine ADSCs (mADSCs) to determine their multipotency. We also performed single-cell phosphospecific flow cytometric analysis related to cell differentiation and stemness...
2017: Journal of veterinary medicine
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