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fabp4 breast cancer

Sandra Guaita-Esteruelas, Alba Bosquet, Paula Saavedra, Josep Gumà, Josefa Girona, Eric W-F Lam, Kepa Amillano, Joan Borràs, Lluís Masana
Adipose tissue plays an important role in tumor progression, because it provides nutrients and adipokines to proliferating cells. Fatty acid binding protein 4 (FABP4) is a key adipokine for fatty acid transport. In metabolic pathologies, plasma levels of FABP4 are increased. However, the role of this circulating protein is unknown. Recent studies have demonstrated that FABP4 might have a role in tumor progression, but the molecular mechanisms involved are still unclear. In this study, we analysed the role of eFABP4 (exogenous FABP4) in breast cancer progression...
April 6, 2016: Molecular Carcinogenesis
Wenmiao Wang, Peng Yuan, Dianke Yu, Feng Du, Anjie Zhu, Qing Li, Pin Zhang, Dongxin Lin, Binghe Xu
Triple-negative breast cancer (TNBC) is a subtype of breast cancer with poor prognosis and high heterogeneity. The aim of this study was to screen patients for single-nucleotide polymorphisms (SNPs) associated with the prognosis of TNBC. Database-derived SNPs (NextBio, Ensembl, NCBI and MirSNP) located in the 3'-untranslated regions (3'-UTRs) of genes that are differentially expressed in breast cancer were selected. The possible associations between 111 SNPs and progression risk among 323 TNBC patients were investigated using a two-step case-control study with a discovery cohort (n=162) and a validation cohort (n=161)...
April 5, 2016: Oncotarget
Graziela Rosa Ravacci, Maria Mitzi Brentani, Tharcisio Citrângulo Tortelli, Raquel Suzana M M Torrinhas, Jéssica Reis Santos, Angela Flávia Logullo, Dan Linetzky Waitzberg
In breast cancer, lipid metabolic alterations have been recognized as potential oncogenic stimuli that may promote malignancy. To investigate whether the oncogenic nature of lipogenesis closely depends on the overexpression of HER2 protooncogene, the normal breast cell line, HB4a, was transfected with HER2 cDNA to obtain HER2-overexpressing HB4aC5.2 cells. Both cell lines were treated with trastuzumab and docosahexaenoic acid. HER2 overexpression was accompanied by an increase in the expression of lipogenic genes involved in uptake (CD36), transport (FABP4), and storage (DGAT) of exogenous fatty acids (FA), as well as increased activation of "de novo" FA synthesis (FASN)...
2015: BioMed Research International
Donald G Matthews, Joseph D'Angelo, Jordan Drelich, JoEllen Welsh
Vitamin D status has been associated with obesity, metabolic syndrome and several cancers including colon and breast. Since adipocytes express VDR and obesity is a known risk factor for cancer, vitamin D actions in adipose tissue may contribute to its cancer protective effects. In the mammary gland, signaling from adipocytes to epithelial cells is necessary for breast cancer initiation, but the impact of vitamin D on this cross-talk is unclear. To examine the role of VDR in adipose tissue, particularly in the context of the mammary gland, we crossed Vdr-flox mice with Fabp4-cre mice to generate mice with adipose-specific Vdr deletion (termed CVF mice)...
September 30, 2015: Journal of Steroid Biochemistry and Molecular Biology
Yoon Yang Jung, Hye Min Kim, Ja Seung Koo
PURPOSE: The tumor biology of metastatic breast cancers differ according to the metastatic sites, and the features of cancer metabolism may also be different. The aim of this study is to investigate the expression of lipid metabolism-related proteins in metastatic breast cancer according to metastatic site and discuss the clinical significance thereof. METHODS: Immunohistochemical staining for lipid metabolism-related proteins [fatty acid synthase (FASN), hormone-sensitive lipase (HSL), carnitine palmitoyltransferase IA (CPT-1A), acyl-CoA oxidase 1 (ACOX1), fatty acid binding protein 4 (FABP4,) and perilipin 1 (PLIN1)] was performed using a tissue microarray of 149 cases of metastatic breast cancer (bone metastasis = 39, brain metastasis = 37, liver metastasis = 21, and lung metastasis = 52)...
2015: PloS One
Adnan Merdad, Sajjad Karim, Hans-Juergen Schulten, Manikandan Jayapal, Ashraf Dallol, Abdelbaset Buhmeida, Fatima Al-Thubaity, Mamdooh A GariI, Adeel G A Chaudhary, Adel M Abuzenadah, Mohammed H Al-Qahtani
BACKGROUND: Breast cancer incidence rates are increasing at an alarming rate among Saudi Arabian females. Most molecular genetic discoveries on breast cancer and other cancers have arisen from studies examining European and American patients. However, possibility of specific changes in molecular signature among cancer patients of diverse ethnic groups remains largely unexplored. We performed transcriptomic profiling of surgically-resected breast tumors from 45 patients based in the Western region of Saudi Arabia using Affymetrix Gene 1...
2015: BMC Genomics
Sewha Kim, YuKyung Lee, Ja Seung Koo
PURPOSE: This study aimed to determine the expression and clinical significance of proteins that are involved in lipid metabolism in human breast tumors. METHODS: Tumors from 476 breast cancer patients were used to construct tissue microarrays. Then, immunohistochemistry (IHC) for hormone-sensitive lipase (HSL), Perilipin 1 (PLIN1), fatty acid binding protein 4 (FABP4), carnitine palmitoyltransferase IA (CPT-1A), acyl-CoA oxidase 1 (ACOX-1), and fatty acid synthase (FASN) was performed on these microarrays...
2015: PloS One
L N Guerra, C Suarez, D Soto, A Schiappacasse, D Sapochnik, P Sacca, G Piwien-Pilipuk, B Peral, J C Calvo
INTRODUCTION: In the mammary gland, the involution that occurs when lactation ends is an important period for cancer development. We have previously demonstrated stromal-epithelium interactions evaluating conditioned medium of adipose tissue on breast epithelial metalloproteases activity (Creydt et al., Clin Transl Oncol 15:124-131, 2013). Here, we evaluated the effects of conditioned medium of breast epithelial mammary cells on stromal cells. MATERIALS AND METHODS: Conditioned medium from normal murine mammary gland cell line (NMuMG) and conditioned medium proteins were obtained...
July 2015: Clinical & Translational Oncology
Françoise Descotes, Pascal Jézéquel, Frédérique Spyratos, Loïc Campion, Catherine Grenot, Florence Lerebours, Mario Campone, Catherine Guérin-Charbonnel, Didier Lanoë, Marjorie Adams, Jean André, Antoine Carlioz, Pierre-Marie Martin, Agnès Chassevent, Marie-Lise Jourdan, Catherine Guette, Isabelle Zanella-Cleon, Gabriel Ricolleau
We used a 2D-electrophoresis (2-DE) proteomic approach to identify novel biomarkers in node-negative breast cancers. This retrospective study focused on a population of patients with ductal pN0M0 tumours. A subset of patients who developed metastases and in whose tumours were found high levels of uPA and PAI-1 (metastatic relapse, MR: n=20) were compared to another subset in whom no metastatic relapse occurred and whose tumours were found to have low levels of uPA and PAI-1 (no relapse, NR: n=21). We used a 2-DE coupled with MS approach to screen cytosol fractions using two pH-gradient scales, a broad scale (3...
July 2012: International Journal of Oncology
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