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Adipocyte and breast cancer

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https://www.readbyqxmd.com/read/29222346/adiposity-inflammation-and-breast-cancer-pathogenesis-in-asian-women
#1
Neil M Iyengar, I-Chun Chen, Xi K Zhou, Dilip D Giri, Domenick J Falcone, Lisle A Winston, Hanhan Wang, Samantha Williams, Yen-Shen Lu, Tsu-Hsin Hsueh, Ann-Lii Cheng, Clifford A Hudis, Ching-Hung Lin, Andrew J Dannenberg
Obesity is associated with white adipose tissue (WAT) inflammation in the breast, elevated levels of the estrogen biosynthetic enzyme, aromatase, and systemic changes that predispose to breast cancer development. We examined whether WAT inflammation and its associated systemic effects correlate with body fat levels in an Asian population where body mass index (BMI) is not an accurate assessment of obesity and cancer risk. We also investigated whether biologic differences could account for the greater proportion of premenopausal estrogen receptor (ER)-positive breast cancer in Asian versus western countries...
December 8, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/29197120/resveratrol-inhibits-obesity-associated-adipose-tissue-dysfunction-and-tumor-growth-in-a-mouse-model-of-postmenopausal-claudin-low-breast-cancer
#2
Emily L Rossi, Subreen A Khatib, Steven S Doerstling, Laura W Bowers, Melissa Pruski, Nikki A Ford, Randolph D Glickman, Mengmeng Niu, Peiying Yang, Zhengrong Cui, John DiGiovanni, Stephen D Hursting
Adipose tissue dysregulation, a hallmark of obesity, contributes to a chronic state of low-grade inflammation and is associated with increased risk and progression of several breast cancer subtypes, including claudin-low breast tumors. Unfortunately, mechanistic targets for breaking the links between obesity-associated adipose tissue dysfunction, inflammation, and claudin-low breast cancer growth have not been elucidated. Ovariectomized female C57BL/6 mice were randomized (n = 15/group) to receive a control diet, a diet-induced obesity (DIO) diet, or a DIO + resveratrol (0...
November 20, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/29193620/morphometric-study-of-adipocytes-on-breast-cancer-by-means-of-photonic-microscopy-and-image-analysis
#3
Luis Eduardo Suárez-Nájera, José Jorge Chanona-Pérez, Alejandra Valdivia-Flores, Daniel Marrero-Rodríguez, Mauricio Salcedo-Vargas, David Israel García-Ruiz, Marco Antonio Castro-Reyes
Worldwide, breast cancer (BrCa) is currently the leading cause of deaths associated to malignant lesions in adult women. Given that some studies have mentioned that peritumoral adipocytes may contribute to breast carcinogenesis, present work sought to quantitative evaluate the morphometry of these cells in a group of adult women. Three thousand six hundred sixty four breast adipocytes, that came from biopsies of a group of adult females with different types of breast carcinomas (ductal, lobular, and mixed) and one with normal tissues, were evaluated through an image analysis (IA) process regarding six morphometric descriptors: area (A), perimeter (P), Feret diameter (FD ), aspect ratio (AR), roundness factor (RF), and fractal dimension of cellular contour (FDC )...
November 27, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29192217/decreased-mirna-expression-in-klinefelter-syndrome
#4
Laura Cimino, Michele Salemi, Rossella Cannarella, Rosita A Condorelli, Giorgio Giurato, Giovanna Marchese, Sandro La Vignera, Aldo E Calogero
The widelyvariable phenotypic spectrum and the different severity of symptoms in men with Klinefelter syndrome (KS) suggest a role for epigenetic mediators. Therefore, the aim of this study is to evaluate the possible involvement of miRNAs in the clinical manifestations of KS. To accomplish this, we performed a transcriptome analysis in peripheral blood mononuclear cells (PBMCs) of 10 non-mosaic KS patients, 10 aged-matched healthy men and 10 aged-matched healthy female controls with normal karyotype. After RNA extraction from PBMC and the preparation of RNA libraries, the samples were sequenced using next generation high-throughput sequencing technology...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29180690/fad104-a-regulator-of-adipogenesis-is-a-novel-suppressor-of-tgf-%C3%AE-mediated-emt-in-cervical-cancer-cells
#5
Motoharu Goto, Shigehiro Osada, Masayoshi Imagawa, Makoto Nishizuka
Epithelial-to-mesenchymal transition (EMT) is a biological process in which epithelial cells translate into a mesenchymal phenotype with invasive capacities, contributing to tumour progression, metastasis, and the acquisition of chemotherapy resistance. To identify new therapeutic targets for cancers, it is important to clarify the molecular mechanism of induction of EMT. We have previously reported that fad104, a positive regulator of adipocyte differentiation, suppressed the invasion and metastasis of melanoma and breast cancer cells...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29175445/adipocyte-biology-in-breast-cancer-from-silent-bystander-to-active-facilitator
#6
REVIEW
Junjeong Choi, Yoon Jin Cha, Ja Seung Koo
Adipocytes account for the largest proportion among the cells that comprise breast tissue; therefore, they are considered to be a critical cell type in the tumor microenvironment of breast cancer. In breast cancer, adipocytes are not only found adjacent to cancer cells, but they also play an active role in the entire process of cancer development, progression, metastasis, and treatment response. Factors including the secretion of adipokines such as leptin and adiponectin, as well as autotaxin, interleukin 6, tumor necrosis factor alpha, and hepatic growth factor, metabolic remodeling that supports the growth of breast cancer by transfer of fatty acids to increase mitochondrial β-oxidation, extracellular matrix remodeling and endotrophin production from type IV collagen, and cancer-associated fibroblast phenotype changes have all been implicated in this comprehensive process...
November 21, 2017: Progress in Lipid Research
https://www.readbyqxmd.com/read/29167285/macrophagic-crown-like-structures-are-associated-with-an-increased-risk-of-breast-cancer-in-benign-breast-disease
#7
Jodi M Carter, Tanya L Hoskin, M Alvaro Pena, Rushin Brahmbhatt, Stacey J Winham, Marlene H Frost, Melody Stallings-Mann, Derek C Radisky, Keith L Knutson, Daniel W Visscher, Amy C Degnim
In breast adipose tissue, macrophages that encircle damaged adipocytes form "crown-like structures of breast" (CLS-B). While CLS-B have been associated with breast cancer, their role in benign breast disease and early carcinogenesis is not understood. We evaluated breast biopsies from three age-matched groups (n = 86 each, mean age 55 y), including normal tissue donors of the Susan G. Komen for the Cure® Tissue Bank (KTB), and subjects in the Mayo Clinic Benign Breast Disease (BBD) Cohort who developed cancer (BBD cases) or did not develop cancer (BBD controls, median follow-up 14 y)...
November 22, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/29163362/obesity-and-breast-cancer-current-insights-on-the-role-of-fatty-acids-and-lipid-metabolism-in-promoting-breast-cancer-growth-and-progression
#8
REVIEW
Christina Blücher, Sonja C Stadler
Obesity and excess accumulation of adipose tissue are known risk factors for several types of cancer, including breast cancer. With the incidence of obesity constantly rising worldwide, understanding the molecular details of the interaction between adipose tissue and breast tumors, the most common tumors in women, becomes an urgent task. In terms of lipid metabolism, most of the studies conducted so far focused on upregulated de novo lipid synthesis in cancer cells. More recently, the use of extracellular lipids as source of energy came into focus...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29158314/tumour-adipose-tissue-crosstalk-fuelling-tumour-metastasis-by-extracellular-vesicles
#9
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/29117945/adipocytes-sequester-and-metabolize-the-chemotherapeutic-daunorubicin
#10
Xia Sheng, Jean-Hugues Parmentier, Jonathan Tucci, Hua Pei, Omar Cortez-Toledo, Christina M Dieli-Conwright, Matthew J Oberley, Michael Neely, Etan Orgel, Stan G Louie, Steven D Mittelman
Obesity is associated with poorer outcome for many cancers. Previously, we observed that adipocytes protect acute lymphoblastic leukemia (ALL) cells from the anthracycline, daunorubicin. In this study, it is determined whether adipocytes clear daunorubicin from the tumor microenvironment (TME). Intracellular daunorubicin concentrations were evaluated using fluorescence. Daunorubicin and its largely inactive metabolite, daunorubicinol, were analytically measured in media, cells, and tissues using liquid chromatography/mass spectrometry (LC/MS)...
November 8, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29042292/obesity-enhances-carcinogen-7-12-dimethylbenz-a-anthracene-induced-tumorigenesis-in-vitro-and-in-vivo
#11
Chia-Chien Hsieh, Shih-Han Peng, Mei-Jia Chou
Growing body of evidence shows that extra adiposity influences on the progression of multiple cancers, including breast cancer. The aim of this study is to investigate whether obesity correlates with mammary tumor development in vitro and in vivo. We found that obesity-related mediators, 3T3-L1 adipocyte conditioned medium, enhanced formation of cancerous foci induced by the carcinogen 7,12-Dimethylbenz[a]anthracene (DMBA) in NIH/3T3 fibroblasts, in vitro. Additionally, we tested the effect of obesity in mouse model of DMBA-induced breast cancer...
October 16, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29031720/brown-adipocytes-can-display-a-mammary-basal-myoepithelial-cell-phenotype-in%C3%A2-vivo
#12
Li Li, Baoguo Li, Min Li, Chaoqun Niu, Guanlin Wang, Ting Li, Elżbieta Król, Wanzhu Jin, John R Speakman
OBJECTIVE: Previous work has suggested that white adipocytes may also show a mammary luminal secretory cell phenotype during lactation. The capacity of brown and beige/brite adipocytes to display a mammary cell phenotype and the levels at which they demonstrate such phenotypes in vivo is currently unknown. METHODS: To investigate the putative adipocyte origin of mammary gland cells, we performed genetic lineage-labeling experiments in BAT and the mammary glands...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28993797/the-linkage-between-breast-cancer-hypoxia-and-adipose-tissue
#13
REVIEW
Linda K Rausch, Nikolaus C Netzer, Josef Hoegel, Stephan Pramsohler
OBJECTIVE: The development of breast cancer cells is linked to hypoxia. The hypoxia-induced factor HIF-1α influences metastasis through neovascularization. Hypoxia seems to decrease the responsiveness to hormonal treatment due to loss of estrogen receptors (ERs). Obesity is discussed to increase hypoxia in adipocytes, which promotes a favorable environment for tumor cells in mammary fat tissue, whereas, tumor cells profit from good oxygen supply and are influenced by its deprivation as target regions within tumors show...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28989976/hematopoietic-stem-cell-derived-adipocytes-promote-tumor-growth-and-cancer-cell-migration
#14
Y Xiong, D L Russell, L T McDonald, L A Cowart, A C LaRue
Adipocytes, apart from their critical role as the energy storage depots, contribute to the composition of the tumor microenvironment. Our previous studies based on a single hematopoietic stem cell (HSC) transplantation model, have revealed a novel source of adipocytes from HSCs via monocyte/macrophage progenitors. Herein, we extend these studies to examine the role of HSC-derived adipocytes (HSC-Ad) in tumor progression. When cultured under adipogenic conditions, bone marrow-derived monocytic progenitors differentiated into adipocytes that accumulated oil droplets containing triglyceride...
2017: International Journal of Cancer Research and Molecular Mechanisms
https://www.readbyqxmd.com/read/28919302/obesity-and-breast-cancer-role-of-estrogens-and-the-molecular-underpinnings-of-aromatase-regulation-in-breast-adipose-tissue
#15
REVIEW
Céline Gérard, Kristy A Brown
One in eight women will develop breast cancer over their lifetime making it the most common female cancer. The cause of breast cancer is multifactorial and includes hormonal, genetic and environmental cues. Obesity is now an accepted risk factor for breast cancer in postmenopausal women, particularly for the hormone-dependent subtype of breast cancer. Obesity, which is characterized by an excess accumulation of body fat, is at the origin of chronic inflammation of white adipose tissue and is associated with dramatic changes in the biology of adipocytes leading to their dysfunction...
September 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28877394/her2-breast-cancer-cells-undergo-apoptosis-upon-exposure-to-tannic-acid-released-from-remodeled-crosslinked-collagen-type-i
#16
Lauren G Jordan, Brian W Booth
Tannic acid (TA) is a naturally occurring polyphenol that crosslinks collagen type I and possesses anti-cancer potential. In previous studies, we demonstrated the increased sensitivity of estrogen receptor-positive (ER(+) ) breast cancer cells to TA as opposed to triple negative breast cancer cells and normal human breast epithelial cells. In the current study, human pre-adipocytes and HER2+ breast cancer cells were grown on TA-crosslinked collagen type I beads. Cell attachment, growth, and proliferation of the cells result in remodeling of the collagen matrix and release of the crosslinking TA...
September 6, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28873415/proliferative-endocrine-effects-of-adipose-tissue-from-obese-animals-on-mcf7-cells-are-ameliorated-by-resveratrol-supplementation
#17
Christopher F Theriau, O'Llenecia S Sauvé, Marie-Soleil Beaudoin, David C Wright, Michael K Connor
Obesity is clearly associated with an increased risk of breast cancer in postmenopausal women. The purpose was to determine if obesity alters the adipocyte adipokine secretion profile, thereby altering the adipose-dependent paracrine/endocrine growth microenvironment surrounding breast cancer cells (MCF7). Additionally, we determined whether resveratrol (RSV) supplementation can counteract any obesity-dependent effects on breast cancer tumor growth microenvironment. Obese ZDF rats received standard chow diet or diet supplemented with 200 mg/kg body weight RSV...
2017: PloS One
https://www.readbyqxmd.com/read/28864539/signals-from-the-adipose-microenvironment-and-the-obesity-cancer-link-a-systematic-review
#18
REVIEW
Caroline Himbert, Mahmoud Delphan, Dominique Scherer, Laura W Bowers, Stephen Hursting, Cornelia M Ulrich
Obesity and its associated metabolic dysregulation are established risk factors for many cancers. However, the biologic mechanisms underlying this relationship remain incompletely understood. Given the rising rates of both obesity and cancer worldwide, and the challenges for many people to lose excess adipose tissue, a systematic approach to identify potential molecular and metabolic targets is needed to develop effective mechanism-based strategies for the prevention and control of obesity-driven cancer. Epidemiologic, clinical, and preclinical data suggest that within the growth-promoting, proinflammatory microenvironment accompanying obesity, crosstalk between adipose tissue (comprised of adipocytes, macrophages and other cells) and cancer-prone cells may occur via obesity-associated hormones, cytokines, and other mediators that have been linked to increased cancer risk and/or progression...
September 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28841614/autologous-fat-grafting-as-a-novel-antiestrogen-vehicle-for-the-treatment-of-breast-cancer
#19
Scott Thomas, Stephanie Chen, Hani Sbitany, Edwin Kwon, Merisa Piper, Jeenah Park, Manuela Terranova Barberio, Nela Pawlowska, Pamela N Munster
BACKGROUND: Adipose fat transfer is increasingly used for contour corrections of the tumor bed after lumpectomy and breast reconstructions after mastectomy. The lipophilic nature of the fat tissue may render adipocytes an ideal vehicle with which to deliver a high boost of an antiestrogen to the tumor bed to serve as an adjunct systemic hormonal therapy. The authors therefore tested whether adipocytes could safely be loaded with an antiestrogen and allow for release at therapeutic concentrations to treat breast cancer...
September 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28835077/-effect-of-mesenchymal-stem-cells-on-the-apoptosis-of-breast-cancer-cells-induced-by-cisplatin
#20
H T Xu, Y Zhou, W Li, H H Zhang, H Y Wu, J Yang
Objective: To investigate the effect of mesenchymal stem cells (MSCs) on apoptosis of breast cancer cell line MCF-7 induced by cisplatin (DDP), MSCs derived from breast cancer (BC-MSCs) or adjacent non-cancerous tissues (BN-MSCs) were isolated, cultured and identified. Methods: BC-MSCs and BN-MSCs were isolated and cultured by tissue adherent method. The differentiation potential of BC-MSCs was detected by osteogenic and adipogenic induction, and cell surface markers of BC-MSCs and BN-MSCs were evaluated by flow cytometry...
August 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
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