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FABP4

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https://www.readbyqxmd.com/read/29237483/adipocytes-promote-cholangiocarcinoma-metastasis-through-fatty-acid-binding-protein-4
#1
Jihua Nie, Jingying Zhang, Lili Wang, Lunjie Lu, Qian Yuan, Fangmei An, Shuyu Zhang, Yang Jiao
BACKGROUND: The early occurrence regional nodal and distant metastases cholangiocarcinoma (CCA) is one of the major reasons for its poor prognosis. However, the related mechanisms are largely elusive. Recently, increasing evidences indicate that adipocytes might be involved in the proliferation, homing, migration and invasion of several malignancies. In the present study, we attempt to determine the effects and possible mechanisms of adipocytes on regulating progression of CCA. METHODS: Adipocyte-CCA cell co-culture system and CCA metastasis mice model were used to determine the effects of adipocytes on CCA metastasis...
December 13, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29212659/unconventional-secretion-of-fabp4-by-endosomes-and-secretory-lysosomes
#2
Julien Villeneuve, Laia Bassaganyas, Sebastien Lepreux, Marioara Chiritoiu, Pierre Costet, Jean Ripoche, Vivek Malhotra, Randy Schekman
An appreciation of the functional properties of the cytoplasmic fatty acid binding protein 4 (FABP4) has advanced with the recent demonstration that an extracellular form secreted by adipocytes regulates a wide range of physiological functions. Little, however, is known about the mechanisms that mediate the unconventional secretion of FABP4. Here, we demonstrate that FABP4 secretion is mediated by a membrane-bounded compartment, independent of the conventional endoplasmic reticulum-Golgi secretory pathway. We show that FABP4 secretion is also independent of GRASP proteins, autophagy, and multivesicular bodies but involves enclosure within endosomes and secretory lysosomes...
December 6, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29192407/de-novo-lipogenesis-and-desaturation-of-fatty-acids-during-adipogenesis-in-bovine-adipose-derived-mesenchymal-stem-cells
#3
Yongli Yue, Lichun Zhang, Xiang Zhang, Xueling Li, Haiquan Yu
Adipose-derived mesenchymal stem cells (ADSCs) are useful cell model to study adipogenesis and energy metabolism. However, the biological characteristics of bovine ADSCs (bADSCs) remain unclear. This study aimed to isolate and identify bADSCs and further investigate fatty acid (FA)-related gene expression and composition of FAs during adipogenesis. The growth curve showed the bADSCs of P5 cells had rapid proliferation superior to P10-P50. The colony formation assay showed colony number of P5 cells was higher than that of P50 cells (51...
November 30, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/29181403/gosb-inhibits-triacylglycerol-synthesis-and-promotes-cell-survival-in-mouse-mammary-epithelial-cells
#4
Gaoxiao Xu, Saixing Duan, Jianye Hou, Zhongxin Wei, Guangwei Zhao
It has been demonstrated that the activator protein related transcription factor Finkel-Biskis-Jinkins murine osteosarcoma B (GosB) is involved in preadipocyte differentiation and triacylglycerol synthesis. However, the role of GosB in regulating the synthesis of milk fatty acid in mouse mammary glands remains unclear. This research uncovered potentially new roles of GosB in suppressing milk fatty acid synthesis. Results revealed that GosB had the highest expression in lung tissue and showed a higher expression level during nonlactation than during lactation...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29174564/crispr-cas9-engineered-osteogenesis-imperfecta-type-v-leads-to-severe-skeletal-deformities-and-perinatal-lethality-in-mice
#5
Frank Rauch, Yeqing Geng, Lisa Lamplugh, Bahareh Hekmatnejad, Marie-Hélène Gaumond, Janice Penney, Yojiro Yamanaka, Pierre Moffatt
Osteogenesis imperfecta (OI) type V is caused by an autosomal dominant mutation in the IFITM5 gene, also known as BRIL. The c.-14C>T mutation in the 5'UTR of BRIL creates a novel translational start site adding 5 residues (MALEP) in frame with the natural coding of BRIL. A neomorphic function has been proposed for the MALEP-BRIL but the mechanisms at play are still unknown. In order to further understand the effects of MALEP-BRIL in vivo, we generated a knockin (KI) mouse model having the exact genetic -14C>T replica of patients with OI type V...
November 22, 2017: Bone
https://www.readbyqxmd.com/read/29172079/design-syntheses-and-lipid-accumulation-inhibitory-activities-of-novel-resveratrol-mimics
#6
Chanjuan Li, Bao Cheng, Sai Fang, Huihao Zhou, Qiong Gu, Jun Xu
Hispidine was initially discovered from Ficus Hispida for cardiovascular protection. In this paper, hispidine derivatives, which contain a novel resveratrol-like scaffold, have been designed, synthesized, and assayed as agents against lipid accumulations in 3T3-L1 pre-adipocytes. Six hispidine derivatives have the activity of reducing TG in 3T3-L1 adipocytes in dosage-dependent manner. The most active compound can reduce the lipid accumulation up to 78.4% at 10 μM qPCR and Western blotting results demonstrate that the two most active compounds inhibit both lipodenesis and adipogenesis in 3T3-L1 cells through (1) increasing the phosphorylations of AMPK and ACC, promoting SIRT1 expression...
November 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29171144/altered-fatty-acid-binding-protein-4-fabp4-expression-and-function-in-human-and-animal-models-of-hepatocellular-carcinoma
#7
Kyle J Thompson, R Garland Austin, Shayan S Nazari, Keith S Gersin, David A Iannitti, Iain H McKillop
BACKGROUND AND AIMS: Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related mortality. Risk factors for developing HCC include viral hepatitis, alcohol, and obesity. Fatty acid binding proteins (FABPs) bind long-chain free fatty acids (FFAs) and are expressed in a tissue-specific pattern; FABP1 being the predominant hepatic form, and FABP4 the predominant adipocyte form. The aims of this study were to investigate the expression and function of FABPs1-9 in human and animal models of obesity-related HCC...
November 24, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29169989/adamts18-deficiency-leads-to-visceral-adiposity-and-associated-metabolic-syndrome-in-mice
#8
Rui Zhu, Mengting Cheng, Tiantian Lu, Ning Yang, Shuai Ye, Yi-Hsuan Pan, Tao Hong, Suying Dang, Wei Zhang
Visceral adiposity is of greater risk than obesity in subcutaneous adipose tissue for diabetes and cardiovascular disease. Its pathogenesis remains unclear, but it is associated with extracellular matrix (ECM) remodeling. A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTSs) are a family of secreted Zn-dependent metalloproteinases that play crucial roles in development and various diseases owing to their ECM remodeling activity. ADAMTS18 is an "orphan ADAMTS" whose function and substrate remain unclear...
November 20, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29168191/genetic-variants-in-il15-promoter-affect-transcription-activity-and-intramuscular-fat-deposition-in-longissimus-dorsi-muscle-of-pigs
#9
D He, Z Jiang, Y Tian, H Han, M Xia, W Wei, L Zhang, J Chen
Intramuscular fat (IMF) content is a key aspect of pork quality. Elucidation of intramuscular adipocyte regulation mechanisms is important for improving IMF content. Intramuscular adipocytes are dispersed among muscle fibers, so they are inclined to be affected by muscle-derived factors. Interleukin-15 is a major muscle-secreted factor. In this study, the genetic and physiological impacts of IL15 on adipogenesis is investigated. The promoter region of IL15 was scanned by comparative sequencing using two DNA pools of high- and low-IMF individuals...
November 22, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29164883/raspberry-ketone-reduced-lipid-accumulation-in-3t3-l1-cells-and-ovariectomy-induced-obesity-in-wistar-rats-by-regulating-autophagy-mechanisms
#10
Sy-Ying Leu, Yi-Chen Chen, Yung-Chieh Tsai, Yao-Wen Hung, Chih-Hsiung Hsu, Yen-Mei Lee, Pao-Yun Cheng
This study aimed to determine the anti-obesity effects of raspberry ketone (RK), one of the major aromatic compounds contained in raspberry, and its underlying mechanisms. During adipogenesis of 3T3-L1 cells, RK (300 μM) significantly reduced lipid accumulation and downregulated the expression of CCAAT/enhancer-binding protein α (C/EBPα), peroxisome proliferation-activated receptor γ (PPARγ), fatty acid-binding protein 4 (FABP4), and fatty acid synthase (FAS). RK also reduced the expression of light chain 3B (LC3B), autophagy-related protein 12 (Atg12), sirtuin 1 (SIRT1), and phosphorylated-tuberous sclerosis complex 2 (TSC2), whereas it increased the level of p62 and phosphorylated-mammalian target of rapamycin (mTOR)...
November 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29158087/fabp4-induces-asthmatic-airway-epithelial-barrier-dysfunction-via-ros-activated-foxm1
#11
Gaohui Wu, Liteng Yang, Yi Xu, Xiaohong Jiang, Xiaomin Jiang, Lisha Huang, Ling Mao, Shaoxi Cai
Functional abnormal airway epithelial cells, along with activated inflammatory cells, resulting in chronic airway inflammation, are considered as the characteristic of asthma. Fatty Acid Binding Protein 4 (FABP4) takes part in glucose and lipid homeostasis, and also have an important role in allergic airway inflammation. However, whether FABP4 influence barrier function of airway epithelial cells is unknown. In vivo, a HDM-induced murine model of asthma was obtained to assessed airway inflammation and protein expression of E-cadherin and Forkhead Box M1 (FoxM1)...
November 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29138256/low-neonatal-plasma-n-6-n-3-pufa-ratios-regulate-offspring-adipogenic-potential-and-condition-adult-obesity-resistance
#12
Michael C Rudolph, Matthew R Jackman, David M Presby, Julie A Houck, Patricia G Webb, Ginger C Johnson, Taylor K Soderborg, Becky A de la Houssaye, Ivana V Yang, Jacob E Friedman, Paul S MacLean
Adipose tissue expansion (ATE) progresses rapidly during postnatal life, influenced by both prenatal maternal factors and postnatal developmental cues. The ratio of n-6 relative to n-3 polyunsaturated fatty acids (PUFA) is thought to regulate perinatal adipogenesis, but the cellular mechanisms and long-term effects are not well understood. We lowered the fetal and postnatal n-6/n-3 PUFA ratio exposure in wildtype offspring, under standard maternal dietary fat amounts, to test effects of low n-6/n-3 ratios on offspring adipogenesis and adipogenic potential...
November 14, 2017: Diabetes
https://www.readbyqxmd.com/read/29121115/the-response-of-gene-expression-associated-with-lipid-metabolism-fat-deposition-and-fatty-acid-profile-in-the-longissimus-dorsi-muscle-of-gannan-yaks-to-different-energy-levels-of-diets
#13
Chao Yang, Jianbin Liu, Xiaoyun Wu, Pengjia Bao, Ruijun Long, Xian Guo, Xuezhi Ding, Ping Yan
The energy available from the diet, which affects fat deposition in vivo, is a major factor in the expression of genes regulating fat deposition in the longissimus dorsi muscle. Providing high-energy diets to yaks might increase intramuscular fat deposition and fatty acid concentrations under a traditional grazing system in cold seasons. A total of fifteen adult castrated male yaks with an initial body weight 274.3 ± 3.14 kg were analyzed for intramuscular adipose deposition and fatty acid composition. The animals were divided into three groups and fed low-energy (LE: 5...
2017: PloS One
https://www.readbyqxmd.com/read/29108997/chlamydia-pneumoniae-exploits-adipocyte-lipid-chaperone-fabp4-to-facilitate-fat-mobilization-and-intracellular-growth-in-murine-adipocytes
#14
Nirwana Fitriani Walenna, Yusuke Kurihara, Bin Chou, Kazunari Ishii, Toshinori Soejima, Ryota Itoh, Akinori Shimizu, Takeshi Ichinohe, Kenji Hiromatsu
Fatty acid-binding protein 4 (FABP4), a cytosolic lipid chaperone predominantly expressed in adipocytes and macrophages, modulates lipid fluxes, trafficking, signaling, and metabolism. Recent studies have demonstrated that FABP4 regulates metabolic and inflammatory pathways, and in mouse models its inhibition can improve type 2 diabetes mellitus and atherosclerosis. However, the role of FABP4 in bacterial infection, metabolic crosstalk between host and pathogen, and bacterial pathogenesis have not been studied...
November 3, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29096320/mitochondrial-dysfunction-in-parkinsonian-mesenchymal-stem-cells-impairs-differentiation
#15
Plamena R Angelova, Mario Barilani, Christopher Lovejoy, Marta Dossena, Mariele Viganò, Agostino Seresini, Daniela Piga, Sonia Gandhi, Gianni Pezzoli, Andrey Y Abramov, Lorenza Lazzari
Sporadic cases account for 90-95% of all patients with Parkinson's Disease (PD). Atypical Parkinsonism comprises approximately 20% of all patients with parkinsonism. Progressive Supranuclear Palsy (PSP) belongs to the atypical parkinsonian diseases and is histopathologically classified as a tauopathy. Here, we report that mesenchymal stem cells (MSCs) derived from the bone marrow of patients with PSP exhibit mitochondrial dysfunction in the form of decreased membrane potential and inhibited NADH-dependent respiration...
October 20, 2017: Redox Biology
https://www.readbyqxmd.com/read/29096289/effects-of-dietary-lecithin-and-l-carnitine-on-fatty-acid-composition-and-lipid-metabolic-genes-expression-in-subcutaneous-fat-and-longissimus-thoracis-of-growing-finishing-pigs
#16
Qingwei Meng, Shishuai Sun, Yuecheng Sun, Jianan Li, Di Wu, Anshan Shan, Baoming Shi, Baojing Cheng
A 2×2 factorial experiment was conducted to investigate the effects of dietary lecithin and l-carnitine on fatty acid composition and lipid-metabolic genes expression in subcutaneous fat and longissimus thoracis of growing-finishing pigs. 160 barrows were assigned to 4 treatments consisting of 8 replicates with 5 pigs in each. The total PUFA, C18:2n-6 and C18:3n-3 in subcutaneous fat were increased by lecithin but the effect of lecithin was dependent of l-carnitine where supplementation of lecithin together with l-carnitine decreased total PUFA, C18:2n-6 and C18:3n-3...
October 19, 2017: Meat Science
https://www.readbyqxmd.com/read/29091308/in-vivo-and-in-vitro-effects-of-pth1-34-on-osteogenic-and-adipogenic-differentiation-of-human-bone-marrow-derived-mesenchymal-stem-cells-through-regulating-microrna-155
#17
Huan-Sheng Han, Fang Ju, Shuo Geng
This study aimed to investigate the effect of parathyroid hormone (PTH1-34) on osteogenic and adipogenic differentiation of hBMSCs by the regulation of miR-155. A total of 36 adult volunteers were selected in this study. Effects of PTH1-34 on the proliferation of hBMSCs and miR-155 expression were investigated using a MTT assay. The hBMSCs were divided into blank, PTH1-34, miR-155 mimic, miR-155 mimic negative control (NC), miR-155 inhibitor, miR-155 inhibitor NC, PTH1-34 + miR-155 mimic, PTH1-34 + miR-155 inhibitor and NPS R-568 groups...
November 1, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29076225/association-of-genetic-variants-and-expression-levels-of-porcine-fabp4-and-fabp5-genes
#18
M Ballester, A Puig-Oliveras, A Castelló, M Revilla, A I Fernández, J M Folch
The FABP4 and FABP5 genes, coding for fatty acid transport proteins, have long been studied as positional candidate genes for SSC4 QTL affecting fat deposition and composition traits in pigs. Polymorphisms in these genes, FABP4:g.2634_2635insC and FABP5:g.3000T>G, have previously been associated with fatness traits in an Iberian by Landrace cross (IBMAP). The aim of the present work was to evaluate the functional implication of these genetic variants. For this purpose, FABP4 and FABP5 mRNA expression levels in 114 BC1_LD animals (25% Iberian × 75% Landrace) were analyzed using real-time quantitative PCR in backfat and muscle...
October 27, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29066304/regulation-of-lipid-metabolism-in-adipose-depots-of-fat-tailed-and-thin-tailed-lambs-during-negative-and-positive-energy-balances
#19
Hossein Zakariapour Bahnamiri, Abolfazl Zali, Mahdi Ganjkhanlou, Mostafa Sadeghi, Hossein Moradi Shahrbabak
This study aimed to evaluate the effects of negative and positive energy balances on gene expression of regulators and enzymes controlling lipogenesis and lipolysis in muscle and adipose depots of fat-tailed and thin-tailed lambs. Lambs were slaughtered during neutral, negative and positive energy balances for sample collection. Real time q-PCR was conducted to measure the gene expression. Expression of PPARγ was increased in response to positive energy balance regardless of genotype and type of tissue (P<0...
October 21, 2017: Gene
https://www.readbyqxmd.com/read/29065800/fatty-acid-transporter-expression-and-regulation-is-impaired-in-placental-macrovascular-endothelial-cells-in-obese-women
#20
Xiaohua Yang, Patricia Glazebrook, Geraldine C Ranasinghe, Maricela Haghiac, Virtu Calabuig-Navarro, Judi Minium, Perrie O'Tierney-Ginn
OBJECTIVE: Fetal fatty acid (FA) delivery is ultimately controlled by placental transport. Focus has been the maternal-placental interface, but regulation at the feto-placental interface is unknown. METHODS: Placental macrovascular endothelial cells (EC) (n = 4/group) and trophoblasts (TB) (n = 5/group) were isolated from lean (pregravid BMI < 25 kg/m(2)) and obese (body mass index (BMI) > 30) women. Fatty acid transporters FAT/CD36, FABPpm, FATP4, FABP 3, 4 and 5, PLIN2 and PPARα, δ, γ expression, was measured in EC and TB...
October 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
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