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Prdm16

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https://www.readbyqxmd.com/read/28719892/cinnamaldehyde-ameliorates-diet-induced-obesity-in-mice-by-inducing-browning-of-white-adipose-tissue
#1
Jiacheng Zuo, Dandan Zhao, Na Yu, Xin Fang, Qianqian Mu, Yue Ma, Fangfang Mo, Rui Wu, Rufeng Ma, Lili Wang, Ruyuan Zhu, Haixia Liu, Dongwei Zhang, Sihua Gao
BACKGROUND/AIMS: Obesity has become a major health concern with few effective medications. Cinnamaldehyde (CA) has been reported to exhibit anti-diabetic and anti-inflammatory properties. However, whether CA shows anti-obesity activity remains unknown. Therefore, the present study aimed to investigate the potential anti-obesity effects of CA on mice fed a high-fat diet (HFD) and to explore the possible mechanisms involved. METHODS: Male C57BL/6J mice fed an HFD for 12 weeks were supplemented with CA (40 mg/kg/day) via gavage for an additional 8 weeks...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28710806/clinical-features-and-prognostic-impact-of-prdm16-expression-in-adult-acute-myeloid-leukemia
#2
Genki Yamato, Hiroki Yamaguchi, Hiroshi Handa, Norio Shiba, Machiko Kawamura, Satoshi Wakita, Koiti Inokuchi, Yusuke Hara, Kentaro Ohki, Jun Okubo, Myoung-Ja Park, Manabu Sotomatsu, Hirokazu Arakawa, Yasuhide Hayashi
High PRDM16 (also known as MEL1) expression is a representative marker of acute myeloid leukemia (AML) with NUP98-NSD1 and is a significant predictive marker for poor prognosis in pediatric AML. However, the clinical features of adult AML with PRDM16 expression remain unclear. PRDM16 is highly homologous to MDS1/EVI1, which is an alternatively spliced transcript of MECOM (also known as EVI1). We investigated PRDM16 expression in 151 AML patients, with 47 (31%) exhibiting high PRDM16 expression (PRDM16/ABL1 ratio ≥ 0...
July 14, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28701693/transcription-factor-hlx-controls-a-systematic-switch-from-white-to-brown-fat-through-prdm16-mediated-co-activation
#3
Lei Huang, Dongning Pan, Qingbo Chen, Lihua J Zhu, Jianhong Ou, Martin Wabitsch, Yong-Xu Wang
Browning of subcutaneous white fat (iWAT) involves several reprograming events, but the underlying mechanisms are incompletely understood. Here we show that the transcription factor Hlx is selectively expressed in brown adipose tissue (BAT) and iWAT, and is translationally upregulated by β3-adrenergic signaling-mediated suppression of the translational inhibitor 4E-BP1. Hlx interacts with and is co-activated by Prdm16 to control BAT-selective gene expression and mitochondrial biogenesis. Hlx heterozygous knockout mice have defects in brown-like adipocyte formation in iWAT, and develop glucose intolerance and high fat-induced hepatic steatosis...
July 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28698301/prdm16-is-required-for-the-maintenance-of-neural-stem-cells-in-the-postnatal-forebrain-and-their-differentiation-into-ependymal-cells
#4
Issei S Shimada, Melih Acar, Rebecca J Burgess, Zhiyu Zhao, Sean J Morrison
We and others showed previously that PR domain-containing 16 (Prdm16) is a transcriptional regulator required for stem cell function in multiple fetal and neonatal tissues, including the nervous system. However, Prdm16 germline knockout mice died neonatally, preventing us from testing whether Prdm16 is also required for adult stem cell function. Here we demonstrate that Prdm16 is required for neural stem cell maintenance and neurogenesis in the adult lateral ventricle subventricular zone and dentate gyrus. We also discovered that Prdm16 is required for the formation of ciliated ependymal cells in the lateral ventricle...
July 11, 2017: Genes & Development
https://www.readbyqxmd.com/read/28696940/multiple-selective-events-at-the-prdm16-functional-pathway-shaped-adaptation-of-western-european-populations-to-different-climate-conditions
#5
Andrea Quagliarello, Sara De Fanti, Cristina Giuliani, Paolo Abondio, Patrizia Serventi, Stefania Sarno, Marco Sazzini, Donata Luiselli
Several studies highlighted the role of climate in shaping many human evolutionary processes. This occurred even in relatively recent times, having affected various human phenotypic traits, among which metabolic processes that orchestrate absorption and accumulation of substances to maintain energy homeostasis, that is critical for the survival of individuals in high energy-expenditure environments. To date, most researches have focalized on detection of climatic influence on SNPs' frequency in populations exposed to extreme environmental conditions or by comparing variation patterns between populations from different continents...
July 10, 2017: Journal of Anthropological Sciences, Rivista di Antropologia: JASS
https://www.readbyqxmd.com/read/28686851/characterization-of-brown-adipose-like-tissue-in%C3%A2-trauma-induced-heterotopic-ossification-in%C3%A2-humans
#6
Elizabeth A Salisbury, Austin R Dickerson, Thomas A Davis, Jonathan A Forsberg, Alan R Davis, Elizabeth A Olmsted-Davis
Heterotopic ossification (HO), the abnormal formation of bone within soft tissues, is a major complication after severe trauma or amputation. Transient brown adipocytes have been shown to be a critical regulator of this process in a mouse model of HO. In this study, we evaluated the presence of brown fat within human HO lesions. Most of the excised tissue samples displayed histological characteristics of bone, fibroproliferative cells, blood vessels, and adipose tissue. Immunohistochemical analysis revealed extensive expression of uncoupling protein 1 (UCP1), a definitive marker of brown adipocytes, within HO-containing tissues but not normal tissues...
July 4, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28588097/high-intensity-interval-training-and-calorie-restriction-promote-remodeling-of-glucose-and-lipid-metabolism-in-diet-induced-obesity
#7
Rachel A H Davis, Jacob E Halbrooks, Emily Watkins, Gordon Fisher, Gary R Hunter, Tim R Nagy, Eric P Plaisance
Calorie restriction (CR) decreases adiposity, but the magnitude and defense of weight loss is less than predicted due to reductions in total daily energy expenditure (TEE). The purpose of the current investigation was to determine if high-intensity interval training (HIIT) would increase markers of sympathetic activation in white adipose tissue (WAT) and rescue CR-mediated reductions in EE to a greater extent than moderate-intensity aerobic exercise training (MIT). Thirty-two 5-wk old male C57BL/6J mice were placed on ad libitum HFD for 11 weeks followed by randomization to one of four groups (n = 8 per group) for an additional 15 weeks: 1) CON (remain on HFD); 2) CR (25% lower energy intake); 3) CR+HIIT (25% energy deficit created by 12...
June 6, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28535373/a-molecular-switch-regulating-cell-fate-choice-between-muscle-progenitor-cells-and-brown-adipocytes
#8
Yitai An, Gang Wang, Yarui Diao, Yanyang Long, Xinrong Fu, Mingxi Weng, Liang Zhou, Kun Sun, Tom H Cheung, Nancy Y Ip, Hao Sun, Huating Wang, Zhenguo Wu
During mouse embryo development, both muscle progenitor cells (MPCs) and brown adipocytes (BAs) are known to derive from the same Pax7(+)/Myf5(+) progenitor cells. However, the underlying mechanisms for the cell fate control remain unclear. In Pax7-null MPCs from young mice, several BA-specific genes, including Prdm16 and Ucp1 and many other adipocyte-related genes, were upregulated with a concomitant reduction of Myod and Myf5, two muscle lineage-determining genes. This suggests a cell fate switch from MPC to BA...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28484171/current-diagnosis-and-treatment-for-pediatric-acute-myeloid-leukemia
#9
Norio Shiba
Acute myeloid leukemia (AML) is a complex disease caused by chromosomal aberrations, mutations, epigenetic modifications, and the deregulated expression of genes, leading to increased myeloid cell proliferation and decreased hematopoietic progenitor cell differentiation. Although most of these aberrations are correlated with prognosis, accurate risk stratification remains a challenge even after incorporating these molecular markers. Currently, some genetic mutations that allow risk stratification have been identified in adult AML, including DNMT3A and IDH1/2...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28469599/the-role-of-thyrotropin-receptor-activation-in-adipogenesis-and-modulation-of-fat-phenotype
#10
Mohd Shazli Draman, Michael Stechman, David Scott-Coombes, Colin M Dayan, Dafydd Aled Rees, Marian Ludgate, Lei Zhang
Evidence from clinical and experimental data suggests that thyrotropin receptor (TSHR) signaling is involved in energy expenditure through its impact on white adipose tissue (WAT) and brown adipose tissue (BAT). TSHR expression increases during mesenchymal stem cell (MSC) differentiation into fat. We hypothesize that TSHR activation [TSHR*, elevated thyroid-stimulating hormone, thyroid-stimulating antibodies (TSAB), or activating mutation] influences MSC differentiation, which contributes to body composition changes seen in hypothyroidism or Graves' disease (GD)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28465337/correction-prdm16-is-crucial-for-progression-of-the-multipolar-phase-during-neural-differentiation-of-the-developing-neocortex
#11
Mayuko Inoue, Ryota Iwai, Hidenori Tabata, Daijiro Konno, Mariko Komabayashi-Suzuki, Chisato Watanabe, Hiroko Iwanari, Yasuhiro Mochizuki, Takao Hamakubo, Fumio Matsuzaki, Koh-Ichi Nagata, Ken-Ichi Mizutani
No abstract text is available yet for this article.
May 1, 2017: Development
https://www.readbyqxmd.com/read/28424158/generation-of-a-multipurpose-prdm16-mouse-allele-by-targeted-gene-trapping
#12
Alexander Strassman, Frank Schnütgen, Qi Dai, Jennifer C Jones, Angela C Gomez, Lenore Pitstick, Nathan E Holton, Russell Moskal, Erin R Leslie, Harald von Melchner, David R Beier, Bryan C Bjork
Gene trap mutagenesis is a powerful tool to create loss-of-function mutations in mice and other model organisms. Modifications of traditional gene trap cassettes, including addition of conditional features in the form of Flip-excision (FlEx) arrays to enable directional gene trap cassette inversions by Cre and Flpe site-specific recombinases, greatly enhanced their experimental potential. By taking advantage of these conditional gene trap cassettes, we developed a generic strategy for generating conditional mutations and validated this strategy in mice carrying a multipurpose allele of the Prdm16 transcription factor gene...
July 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28408438/prdm16-represses-the-type-i-interferon-response-in-adipocytes-to-promote-mitochondrial-and-thermogenic-programing
#13
Megan Kissig, Jeff Ishibashi, Matthew J Harms, Hee-Woong Lim, Rachel R Stine, Kyoung-Jae Won, Patrick Seale
Brown adipose has the potential to counteract obesity, and thus, identifying signaling pathways that regulate the activity of this tissue is of great clinical interest. PRDM16 is a transcription factor that activates brown fat-specific genes while repressing white fat and muscle-specific genes in adipocytes. Whether PRDM16 also controls other gene programs to regulate adipocyte function was unclear. Here, we identify a novel role for PRDM16 in suppressing type I interferon (IFN)-stimulated genes (ISGs), including Stat1, in adipocytes in vitro and in vivo Ectopic activation of type I IFN signaling in brown adipocytes induces mitochondrial dysfunction and reduces uncoupling protein 1 (UCP1) expression...
June 1, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28397831/microrna-mir-23a-cluster-promotes-osteocyte-differentiation-by-regulating-tgf-%C3%AE-signalling-in-osteoblasts
#14
Huan-Chang Zeng, Yangjin Bae, Brian C Dawson, Yuqing Chen, Terry Bertin, Elda Munivez, Philippe M Campeau, Jianning Tao, Rui Chen, Brendan H Lee
Osteocytes are the terminally differentiated cell type of the osteoblastic lineage and have important functions in skeletal homeostasis. Although the transcriptional regulation of osteoblast differentiation has been well characterized, the factors that regulate differentiation of osteocytes from mature osteoblasts are poorly understood. Here we show that miR-23a∼27a∼24-2 (miR-23a cluster) promotes osteocyte differentiation. Osteoblast-specific miR-23a cluster gain-of-function mice have low bone mass associated with decreased osteoblast but increased osteocyte numbers...
April 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28358328/gelidium-elegans-regulates-the-ampk-prdm16-ucp-1-pathway-and-has-a-synergistic-effect-with-orlistat-on-obesity-associated-features-in-mice-fed-a-high-fat-diet
#15
Jia Choi, Kui-Jin Kim, Eun-Jeong Koh, Boo-Yong Lee
The incidence of obesity is rising at an alarming rate throughout the world and is becoming a major public health concern with incalculable social and economic costs. Gelidium elegans (GENS), also previously known as Gelidium amansii, has been shown to exhibit anti-obesity effects. Nevertheless, the mechanism by which GENS is able to do this remains unclear. In the present study, our results showed that GENS prevents high-fat diet (HFD)-induced weight gain through modulation of the adenosine monophosphate-activated protein kinase (AMPK)-PR domain-containing16 (PRDM16)-uncoupling protein-1 (UCP-1) pathway in a mice model...
March 30, 2017: Nutrients
https://www.readbyqxmd.com/read/28338809/resveratrol-derivative-btm-0512-mitigates-obesity-by-promoting-beige-remodeling-of-subcutaneous-preadipocytes
#16
Qingqing Li, Kuansong Wang, Yipeng Ma, Chunxiang Qin, Changsheng Dong, Ping Jin, Yan Wu, Xiaoming Xiong, Niansheng Li, Changping Hu, Jun Peng, Zhichun Yang
Recent studies revealed that sirtuin 1 (SIRT1) is involved in the regulation of energy metabolism and its agonist resveratrol showed anti-obesity effect. This study aims to determine whether BTM-0512, a novel derivative of resveratrol, acts as an antagonist of obesity and to explore its possible mechanisms. High-fat diet (HFD)-induced obese mice were intragastrically administered with BTM-0512 (5, 10, and 20 mg/kg/day) or resveratrol (10 mg/kg/day). It was found that the body weight, Lee's index, ratio of visceral adipose tissue (VAT) to body weight, and blood glucose were significantly reduced in BTM-0512-treated mice when compared with those in mice treated with resveratrol...
February 24, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28324027/follistatin-targets-distinct-pathways-to-promote-brown-adipocyte-characteristics-in-brown-and-white-adipose-tissues
#17
Rajan Singh, Melissa Braga, Srinivasa T Reddy, Se-Jin Lee, Meher Parveen, Victor Grijalva, Laurent Vergnes, Shehla Pervin
We previously demonstrated that Fst expression is highest in brown adipose tissue (BAT) and skeletal muscle, but is also present at substantial levels in epididymal (Epi) and subcutaneous (SC) white adipose tissues (WAT). Fst promotes mouse brown preadipocyte differentiation and promotes browning during differentiation of mouse embryonic fibroblasts (MEFs). Fst-transgenic (Fst-Tg) mouse show significant increase in circulating Fst levels and increased brown adipose mass. BAT of Fst-Tg mice had increased expression of brown adipose-associated markers including uncoupling protein 1 (UCP1), PRDM16, PGC-1α and Glut4...
January 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28288167/erythropoietin-epo-ameliorates-obesity-and-glucose-homeostasis-by-promoting-thermogenesis-and-endocrine-function-of-classical-brown-adipose-tissue-bat-in-diet-induced-obese-mice
#18
Kazuki Kodo, Satoru Sugimoto, Hisakazu Nakajima, Jun Mori, Ikuyo Itoh, Shota Fukuhara, Keiichi Shigehara, Taichiro Nishikawa, Kitaro Kosaka, Hajime Hosoi
Erythropoietin (EPO), clinically used as a hematopoietic drug, has received much attention due to its nonhematopoietic effects. EPO reportedly has beneficial effects on obesity and diabetes mellitus. We investigated whether interscapular brown adipose tissue (iBAT: main part of classical BAT) could play a role in EPO's anti-obesity and anti-diabetic effects in diet-induced obese mice. Four-week-old male C57BL/6J mice were fed a high-fat diet (HFD-Con), and half were additionally given an intraperitoneal injection of recombinant human EPO (200 IU/kg) (HFD-EPO) thrice a week for four weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28270523/id1-promotes-obesity-by-suppressing-brown-adipose-thermogenesis-and-white-adipose-browning
#19
Mallikarjun Patil, Bal Krishan Sharma, Sawsan Elattar, Judith Chang, Shweta Kapil, Jinling Yuan, Ande Satyanarayana
Obesity results from increased energy intake or defects in energy expenditure. Brown adipose tissue (BAT) is specialized for energy expenditure, a process called adaptive thermogenesis. Peroxisome proliferator-activated receptor γ coactivator 1α (PGC1α) controls BAT-mediated thermogenesis by regulating the expression of Ucp1 Inhibitor of differentiation 1 (Id1) is a helix-loop-helix transcription factor that plays an important role in cell proliferation and differentiation. We demonstrate a novel function of Id1 in BAT thermogenesis and programming of beige adipocytes in white adipose tissue (WAT)...
June 2017: Diabetes
https://www.readbyqxmd.com/read/28260165/l-arginine-promotes-protein-synthesis-and-cell-growth-in-brown-adipocyte-precursor-cells-via-the-mtor-signal-pathway
#20
Xi Ma, Meng Han, Defa Li, Shengdi Hu, Kyler R Gilbreath, Fuller W Bazer, Guoyao Wu
L-Arginine has been reported to enhance brown adipose tissue developments in fetal lambs of obese ewes, but the underlying mechanism is unknown. The present study tested the hypothesis that L-arginine stimulates growth and development of brown adipocyte precursor cells (BAPCs) through activation of mammalian target of rapamycin cell signaling. BAPCs isolated from fetal lambs at day 90 of gestation were incubated   for 6 h in arginine-free DMEM, and then cultured in DMEM with concentrations of 50, 100, 200, 500 or 1000 μmol L-arginine/L for 24-96 h...
March 4, 2017: Amino Acids
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