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adipose crosstalk

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https://www.readbyqxmd.com/read/29315906/antiobesity-molecular-mechanisms-of-action-resveratrol-and-pterostilbene
#1
REVIEW
Min-Hsiung Pan, Jia-Ching Wu, Chi-Tang Ho, Ching-Shu Lai
Obesity is a current global epidemic that has led to a marked increase in metabolic diseases. However, its treatment remains a challenge. Obesity is a multifactorial disease, which involves the dysfunction of neuropeptides, hormones, and inflammatory adipokines from the brain, gut, and adipose tissue. An understanding of the mechanisms and signal interactions in the crosstalk between organs and tissue in the coordination of whole-body energy metabolism would be helpful to provide therapeutic and putative approaches to the treatment and prevention of obesity and related complications...
January 5, 2018: BioFactors
https://www.readbyqxmd.com/read/29242277/endoplasmic-reticulum-chaperone-grp78-regulates-macrophage-function-and-insulin-resistance-in-diet-induced-obesity
#2
Jong Hun Kim, Eunjung Lee, Randall H Friedline, Sujin Suk, Dae Young Jung, Sezin Dagdeviren, Xiaodi Hu, Kunikazu Inashima, Hye Lim Noh, Jung Yeon Kwon, Aya Nambu, Jun R Huh, Myoung Sook Han, Roger J Davis, Amy S Lee, Ki Won Lee, Jason K Kim
Obesity-mediated inflammation is a major cause of insulin resistance, and macrophages play an important role in this process. The 78-kDa glucose-regulated protein (GRP78) is a major endoplasmic reticulum chaperone that modulates unfolded protein response (UPR), and mice with GRP78 heterozygosity were resistant to diet-induced obesity. Here, we show that mice with macrophage-selective ablation of GRP78 (Lyz-GRP78-/-) are protected from skeletal muscle insulin resistance without changes in obesity compared with wild-type mice after 9 wk of high-fat diet...
December 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29231990/tendon-explant-cultures-to-study-the-communication-between-adipose-stem-cells-and-native-tendon-niche
#3
Raquel Costa-Almeida, Dominika Berdecka, Márcia T Rodrigues, Rui L Reis, Manuela E Gomes
Poor clinical outcomes of tendon repair, together with limited regenerative capacity of the tissue, have triggered the search for alternative regenerative medicine strategies. Human adipose-derived stem cells (hASCs) are being investigated as a promising cell source in contributing for tendon repopulation and reconstruction. However, the mechanisms involved in a potential beneficial effect in tendon regeneration are still to be uncovered. To gain further insights on the bi-directional crosstalk occurring between stem cells and the native tendon niche, it was used an indirect (trans-well) system for co-culturing human tendon explants and hASCs...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29215729/crosstalk-between-adipose-stem-cells-and-tendon-cells-reveals-a-temporal-regulation-of-tenogenesis-by-matrix-deposition-and-remodeling
#4
Raquel Costa-Almeida, Isabel Calejo, Rui L Reis, Manuela E Gomes
Tendon injuries constitute an unmet clinical challenge owing to the limited intrinsic regenerative ability of this tissue. Cell-based therapies aim at improving tendon healing through the delicate orchestration of tissue rebuilding and regain of function. Hence, human adipose-derived stem cells (hASCs) have been proposed as a promising cell source for boosting tendon regeneration. In this work, we investigated the influence of hASCs on native human tendon-derived cells (hTDCs) through the establishment of a direct contact co-culture system...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29203476/ucp1-deficiency-increases-adipose-tissue-monounsaturated-fatty-acid-synthesis-and-trafficking-to-the-liver
#5
Laura M Bond, James M Ntambi
Uncoupling protein-1 (UCP1) facilitates thermogenesis in brown and beige adipocytes and can promote energy expenditure by decreasing mitochondrial respiratory efficiency. Defects in UCP1 and brown adipose tissue thermogenesis subject animals to chronic cold stress and elicit compensatory responses to generate heat. How UCP1 regulates white adipose tissue (WAT) lipid biology and tissue crosstalk is not completely understood. Here, we probe the effect of UCP1 deficiency on fatty acid metabolism in inguinal and epididymal WAT and investigate how these metabolic perturbations influence hepatic lipid homeostasis...
December 3, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/29199276/immunologic-and-endocrine-functions-of-adipose-tissue-implications-for-kidney-disease
#6
REVIEW
Qingzhang Zhu, Philipp E Scherer
Excess adiposity can induce adverse sequelae in multiple cell types and organ systems. The transition from the lean to the obese state is characterized by fundamental cellular changes at the level of the adipocyte. These changes affect the local microenvironment within the respective adipose tissue but can also affect nonadipose systems. Adipocytes within fat pads respond to chronic nutrient excess through hyperplasia or hypertrophy, which can differentially affect interorgan crosstalk between various adipose depots and other organs...
December 4, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/29158314/tumour-adipose-tissue-crosstalk-fuelling-tumour-metastasis-by-extracellular-vesicles
#7
REVIEW
Lucía Robado de Lope, Olwen Leaman Alcíbar, Ana Amor López, Marta Hergueta-Redondo, Héctor Peinado
During metastasis, tumour cells must communicate with their microenvironment by secreted soluble factors and extracellular vesicles. Different stromal cell types (e.g. bone marrow-derived cells, endothelial cells and fibroblasts) influence the growth and progression of tumours. In recent years, interest has extended to other cell types in the tumour microenvironment such as adipocytes and adipose tissue-derived mesenchymal stem cells. Indeed, obesity is becoming pandemic in some developing countries and it is now considered to be a risk factor for cancer progression...
January 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29133512/exosomes-from-adipose-derived-stem-cells-attenuate-adipose-inflammation-and-obesity-through-polarizing-m2-macrophages-and-beiging-in-white-adipose-tissues
#8
Hui Zhao, Qianwen Shang, Zhenzhen Pan, Yang Bai, Zequn Li, Huiying Zhang, Qiu Zhang, Chun Guo, Lining Zhang, Qun Wang
Adipose-derived stem cells (ADSCs) play critical roles in controlling obesity-associated inflammation and metabolic disorders. Exosomes from ADSCs exert protective effects in several diseases, but their roles in obesity and related pathological conditions remain unclear. Here we showed that treatment of obese mice with ADSC-derived exosomes facilitated their metabolic homeostasis including improved insulin sensitivity (27.8% improvement), reduced obesity and alleviated hepatic steatosis. ADSC-derived exosomes drove M2 macrophage polarization, inflammation reduction and beiging in white adipose tissues (WAT) of diet-induced obese mice...
November 13, 2017: Diabetes
https://www.readbyqxmd.com/read/29117613/evaluation-of-the-relation-between-omentin-1-and-vitamin-d-in-postmenopausal-women-with-or-without-osteoporosis
#9
O Dikker, S Bekpinar, Gul Ozdemirler, Mujdat Uysal, Muberra Vardar, Sevgi Atar, Murat Usta, Berrin Huner
Introduction Crosstalk between bone and adipose tissues is implicated in several pathologic conditions related to bone metabolism. Omentin-1, a 34-kD protein, is released from omental adipose tissue. A few studies indicated the effect of omentin-1 on bone health and bone mineral density (BMD) and the interaction of omentin-1 with vitamin D. Therefore, this study aimed to investigate the relationship between omentin-1, vitamin D, and BMD in postmenopausal women with osteoporosis compared with non-osteoporotic counterparts...
November 8, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29113429/endophilin-a2-a-potential-link-to-adiposity-and-beyond
#10
Assim A Alfadda, Reem M Sallam, Rukhsana Gul, Injae Hwang, Sojeong Ka
Adipose tissue plays a central role in regulating dynamic crosstalk between tissues and organs. A detailed description of molecules that are differentially expressed upon changes in adipose tissue mass is expected to increase our understanding of the molecular mechanisms that underlie obesity and related metabolic co-morbidities. Our previous studies suggest a possible link between endophilins (SH3Grb2 proteins) and changes in body weight. To explore this further, we sought to assess the distribution of endophilin A2 (EA2) in human adipose tissue and experimental animals...
November 6, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29096734/endocrine-adiponectin-fgf15-19-axis-in-ethanol-induced-inflammation-and-alcoholic-liver-injury
#11
Min You, Zhou Zhou, Michael Daniels, Alvin Jogasuria
Alcoholic liver disease (ALD) is the most prevalent form of liver diseases, encompassing a spectrum of progressive pathological changes from steatosis to steatohepatitis to fibrosis/cirrhosis and hepatocellular carcinoma. Alcoholic steatosis/steatohepatitis is the initial stage of ALD and a major risk factor for advanced liver injuries. Adiponectin is a hormone secreted from adipocytes. Fibroblast growth factor (FGF) 15 (human homolog, FGF19) is an ileum-derived hormone. Adipocyte-derived adiponectin and gut-derived FGF15/19 regulate each other, share common signaling cascades and exert similar beneficial functions...
November 2, 2017: Gene Expression
https://www.readbyqxmd.com/read/29064018/impact-of-human-adipose-tissue-derived-stem-cells-on-malignant-melanoma-cells-in-an-in-vitro-co-culture-model
#12
Fabian Preisner, Uwe Leimer, Stefanie Sandmann, Inka Zoernig, Guenter Germann, Eva Koellensperger
This study focuses on the interactions of human adipose tissue-derived stem cells (ADSCs) and malignant melanoma cells (MMCs) with regard to future cell-based skin therapies. The aim was to identify potential oncological risks as ADSCs could unintentionally be sited within the proximity of the tumor microenvironment of MMCs. An indirect co-culture model was used to analyze interactions between ADSCs and four different established melanoma cell lines (G-361, SK-Mel-5, MeWo and A2058) as well as two low-passage primary melanoma cell cultures (M1 and M2)...
October 24, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/29035280/adipocyte-cannabinoid-receptor-cb1-regulates-energy-homeostasis-and-alternatively-activated-macrophages
#13
Inigo Ruiz de Azua, Giacomo Mancini, Raj Kamal Srivastava, Alejandro Aparisi Rey, Pierre Cardinal, Laura Tedesco, Cristina Maria Zingaretti, Antonia Sassmann, Carmelo Quarta, Claudia Schwitter, Andrea Conrad, Nina Wettschureck, V Kiran Vemuri, Alexandros Makriyannis, Jens Hartwig, Maria Mendez-Lago, Laura Bindila, Krisztina Monory, Antonio Giordano, Saverio Cinti, Giovanni Marsicano, Stefan Offermanns, Enzo Nisoli, Uberto Pagotto, Daniela Cota, Beat Lutz
Dysregulated adipocyte physiology leads to imbalanced energy storage, obesity, and associated diseases, imposing a costly burden on current health care. Cannabinoid receptor type-1 (CB1) plays a crucial role in controlling energy metabolism through central and peripheral mechanisms. In this work, adipocyte-specific inducible deletion of the CB1 gene (Ati-CB1-KO) was sufficient to protect adult mice from diet-induced obesity and associated metabolic alterations and to reverse the phenotype in already obese mice...
November 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28988768/crosstalk-between-kcnk3-mediated-ion-current-and-adrenergic-signaling-regulates-adipose-thermogenesis-and-obesity
#14
Yi Chen, Xing Zeng, Xuan Huang, Sara Serag, Clifford J Woolf, Bruce M Spiegelman
Adrenergic stimulation promotes lipid mobilization and oxidation in brown and beige adipocytes, where the harnessed energy is dissipated as heat in a process known as adaptive thermogenesis. The signaling cascades and energy-dissipating pathways that facilitate thermogenesis have been extensively described, yet little is known about the counterbalancing negative regulatory mechanisms. Here, we identify a two-pore-domain potassium channel, KCNK3, as a built-in rheostat negatively regulating thermogenesis. Kcnk3 is transcriptionally wired into the thermogenic program by PRDM16, a master regulator of thermogenesis...
November 2, 2017: Cell
https://www.readbyqxmd.com/read/28960620/igf-1-promotes-angiogenesis-in-endothelial-cells-adipose-derived-stem-cells-co-culture-system-with-activation-of-pi3k-akt-signal-pathway
#15
Shiyu Lin, Qi Zhang, Xiaoru Shao, Tao Zhang, Changyue Xue, Sirong Shi, Dan Zhao, Yunfeng Lin
OBJECTIVES: The aim of this study was to investigate the role of insulin-like growth factor-1 (IGF-1) and crosstalk between endothelial cells (ECs) and adipose-derived stem cells (ASCs) in the process of angiogenesis. METHODS: A three-dimensional collagen gel used to culture mouse ASCs and mouse ECs in vitro was established. The effects of angiogenesis after exposure to IGF-1 were observed by confocal laser scanning microscopy. Western blotting and qPCR were performed to elucidate the underlying mechanisms...
September 27, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28955384/exploring-the-crosstalk-between-adipose-tissue-and-the-cardiovascular-system
#16
REVIEW
Ioannis Akoumianakis, Nadia Akawi, Charalambos Antoniades
Obesity is a clinical entity critically involved in the development and progression of cardiovascular disease (CVD), which is characterised by variable expansion of adipose tissue (AT) mass across the body as well as by phenotypic alterations in AT. AT is able to secrete a diverse spectrum of biologically active substances called adipocytokines, which reach the cardiovascular system via both endocrine and paracrine routes, potentially regulating a variety of physiological and pathophysiological responses in the vasculature and heart...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28925018/mmp-2-and-notch-signal-pathway-regulate-migration-of-adipose-derived-stem-cells-and-chondrocytes-in-co-culture-systems
#17
Qi Zhang, Shuwen Deng, Ke Sun, Shiyu Lin, Yunfeng Lin, Bofeng Zhu, Xiaoxiao Cai
OBJECTIVES: The crosstalk between chondrocytes and adipose-derived stem cells (ADSCs) could regulate the secretion of multiple growth factors. However, it is not clear how the paracrine action in co-culture systems affect cell migration. This study focused on the changes of cell migration of ADSCs and chondrocytes in co-culture conditions. MATERIALS AND METHODS: Primary ADSCs and chondrocytes were isolated from Sprague-Dawley rat. Transwell co-culture systems, inoculated with ADSCs and chondrocytes, were established in vitro...
September 18, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28923965/sirt7-promotes-adipogenesis-in-the-mouse-by-inhibiting-autocatalytic-activation-of-sirt1
#18
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...
October 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28915700/the-fat-and-the-bad-mature-adipocytes-key-actors-in-tumor-progression-and-resistance
#19
REVIEW
Minh Ngoc Duong, Aline Geneste, Frederique Fallone, Xia Li, Charles Dumontet, Catherine Muller
Growing evidence has raised the important roles of adipocytes as an active player in the tumor microenvironment. In many tumors adipocytes are in close contact with cancer cells. They secrete various factors that can mediate local and systemic effects. The adipocyte-cancer cell crosstalk leads to phenotypical and functional changes of both cell types, which can further enhance tumor progression. Moreover, obesity, which is associated with an increase in adipose mass and an alteration of adipose tissue, has been established as a risk factor for cancer incidence and cancer-related mortality...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28888046/gap-junctional-intercellular-communication-in-adipose-derived-stromal-stem-cells-is-cell-density-dependent-and-positively-impacts-adipogenic-differentiation
#20
Miriam Wiesner, Oliver Berberich, Christiane Hoefner, Torsten Blunk, Petra Bauer-Kreisel
Adipose-derived stromal/stem cells (ASCs) represent a widely used cell source with multi-lineage differentiation capacity in approaches for tissue engineering and regenerative medicine. Despite the multitude of literature on their differentiation capacity, little is reported about the physiological properties contributing to and controlling the process of lineage differentiation. Direct intercellular communication between adjacent cells via gap junctions has been shown to modulate differentiation processes in other cell types, with connexin 43 (Cx43) being the most abundant isoform of the gap junction-forming connexins...
September 9, 2017: Journal of Cellular Physiology
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