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https://www.readbyqxmd.com/read/29777275/overexpression-of-abcb4-contributes-to-acquired-doxorubicin-resistance-in-breast-cancer-cells-in-vitro
#1
Jia-Feng Huang, Chun-Jie Wen, Guo-Zhi Zhao, Yi Dai, Ying Li, Lan-Xiang Wu, Hong-Hao Zhou
PURPOSE: Doxorubicin is one of the most active agents in the first-line therapy for metastatic breast cancer, but its utility is partially limited by the frequent emergence of doxorubicin resistance. In this study, we aimed to investigate the role of ATP-binding cassette sub-family B, member 4 (ABCB4) in acquired doxorubicin resistance in breast cancer cells, as well as its potential mechanism. METHODS: In doxorubicin-sensitive and -resistant breast cancer cell lines MCF-7 and MDA-MB-231, the expression levels of ABCB4 were detected using real-time quantitative PCR and Western blot analysis, the DNA methylation and histone acetylation status of ABCB4 gene were investigated by bisulfite-sequencing PCR (BSP) and chromatin immunoprecipitation (ChIP) assays, and the doxorubicin sensitivity and intracellular doxorubicin accumulation were observed using cell cytotoxicity assay and flow cytometry...
May 18, 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29772880/detection-of-spatial-aggregation-of-cases-of-cancer-from-data-on-patients-and-health-centres-contained-in-the-minimum-basic-data-set
#2
Pablo Fernández-Navarro, Jose-Miguel Sanz-Anquela, Angel Sánchez Pinilla, Rosario Arenas Mayorga, Carmen Salido-Campos, Gonzalo López-Abente
The feasibility of the Minimum Basic Data Set (MBDS) as a tool in cancer research was explored monitoring its incidence through the detection of spatial clusters. Case-control studies based on MBDS and marked point process were carried out with the focus on the residence of patients from the Prince of Asturias University Hospital in Alcalá de Henares (Madrid, Spain). Patients older than 39 years with diagnoses of stomach, colorectal, lung, breast, prostate, bladder and kidney cancer, melanoma and haematological tumours were selected...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29770131/real-time-tracking-of-ex-vivo-expanded-natural-killer-cells-toward-human-triple-negative-breast-cancers
#3
Tung Nguyen Thanh Uong, Kyung-Hwa Lee, Sung-Ja Ahn, Kyung Won Kim, Jung-Joon Min, Hoon Hyun, Mee Sun Yoon
Introduction: Ex vivo -expanded natural killer (NK) cells are a potential candidate for cancer immunotherapy based on high cytotoxicity against malignant tumor cells. However, a limited understanding of the migration of activated NK cells toward solid tumors is a critical dilemma in the development of effective and adoptive NK cell-based immunotherapy. Methods: Ex vivo -expanded NK cells from healthy donors were stained with near-infrared fluorophores at different concentrations...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29763580/detailed-investigation-of-anticancer-activity-of-sulfamoyl-benz-sulfon-amides-and-1h-pyrazol-4-yl-benzamides-an-experimental-and-computational-study
#4
Jamshed Iqbal, Syeda Abida Ejaz, Mariya Al-Rashida, Aamer Saeed
Cancer is the second leading cause of mortality worldwide. Therapeutic approach to cancer is a multi-faceted one, whereby many cellular/enzymatic pathways have been discovered as important drug targets for the treatment of cancer. A major disadvantage of most of the currently available anticancer drugs is their non-selective cytotoxicity towards cancerous as well as healthy cells. Another major hurdle in cancer therapy is the development of resistance to anticancer drugs. This necessitates the discovery of new molecules with potent and selective cytotoxic activity towards only cancerous cells, with minimum or no damage to the normal/healthy cells...
May 12, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29759594/liquid-chromatography-mass-spectrometry-based-metabolomics-and-lipidomics-reveal-toxicological-mechanisms-of-bisphenol-f-in-breast-cancer-xenografts
#5
Chao Zhao, Peisi Xie, Hailin Wang, Zongwei Cai
Bisphenol F (BPF) is a major alternative to bisphenol (BPA) and has been widely used. Although BPA exposure is known to generate various toxic effects, toxicity of BPF remains under-explored. A comprehensive method involving mass spectrometry (MS)-based global lipidomics and metabolomics, and matrix-assisted laser desorption/ionization-mass spectrometry (MALDI)- MS imaging (MSI) was used to study toxic effects of BPF and the underlying mechanisms on tumor metastasis-related tissues (liver and kidney) in breast cancer xenografts...
May 5, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29749427/anti%C3%A2-cancer-effects-of-fisetin-on-mammary-carcinoma-cells-via-regulation-of-the-pi3k-akt-mtor-pathway-in-vitro-and-in-vivo-studies
#6
Xu Sun, Xueman Ma, Qiwei Li, Yong Yang, Xiaolong Xu, Jiaqi Sun, Mingwei Yu, Kexin Cao, Lin Yang, Guowang Yang, Ganlin Zhang, Xiaomin Wang
Fisetin, a natural flavonoid found in a variety of edible and medical plants, has been suggested to inhibit the proliferation of various tumor cells and to induce apoptosis. However, the effects of fisetin on breast cancer have rarely been reported and the underlying mechanism is still undefined. The present study explored the anti‑cancer effects of fisetin on mammary carcinoma cells and the underlying mechanisms. Following treatment with fisetin, viability of 4T1, MCF‑7 and MDA‑MB‑231 cells were measured by MTT assay...
May 2, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29743600/trafficking-localization-and-degradation-of-the-na-hco-3-co-transporter-nbcn1-in-kidney-and-breast-epithelial-cells
#7
Christina Wilkens Olesen, Jens Vogensen, Ida Axholm, Marc Severin, Julie Schnipper, Isabella Skandorff Pedersen, Jakob Hjorth von Stemann, Jacob Morville Schrøder, Dan Ploug Christensen, Stine Falsig Pedersen
The Na+;HCO3- co-transporter NBCn1 (SLC4A7) is a major regulator of intracellular pH yet its trafficking and turnover are essentially unstudied. Here, we used MDCK-II and MCF-7 cells to investigate these processes in epithelial cells. GFP-NBCn1 membrane localization was abolished by truncation of the full NBCn1 C-terminal tail (C-tail) yet did not require the C-terminal PDZ-binding motif (ETSL). Glutathione-S-Transferase-pulldown of the C-tail followed by mass spectrometry analysis revealed putative interactions with multiple sorting-, degradation- and retention factors, including the scaffolding protein RACK1...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29733962/extracellular-atp-drives-breast-cancer-cell-migration-and-metastasis-via-s100a4-production-by-cancer-cells-and-fibroblasts
#8
Ying Liu, Yue-Hang Geng, Hui Yang, Han Yang, Yan-Ting Zhou, Hong-Quan Zhang, Xin-Xia Tian, Wei-Gang Fang
Our previous work has demonstrated that extracellular ATP is an important pro-invasive factor, and in this study, we tapped into a possible mechanism involved. We discovered that ATP could upregulate both the intracellular expression and secretion of S100A4 in breast cancer cells and fibroblasts. Apart from stimulating breast cancer cell motility via intracellular S100A4, ATP enhanced the ability of breast cancer cells to transform fibroblasts into cancer-associated fibroblast (CAF)-like cells, which in turn secreted S100A4 to further promote cancer cell motility...
May 5, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29720853/secondary-metastatic-lesions-to-colon-and-rectum
#9
REVIEW
Michail Galanopoulos, Filippos Gkeros, Christos Liatsos, Christos Pontas, Apostolis Papaefthymiou, Nikos Viazis, Gerassimos J Mantzaris, Nikolaos Tsoukalas
Metastatic lesions of the colon are a rare clinical entity that may present difficulties in management. The incidence of these metastases appears to be increasing, as a result of physicians' greater awareness during follow-up investigations of a primary neoplasm. Furthermore, the presence of a greater proportion of these abnormalities at autopsy should be a triggering factor for further investigation for doctors dealing with colorectal oncology. Their clinical presentation may vary from asymptomatic to signs similar to those of colorectal cancer...
May 2018: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29715105/preparation-and-in-vitro-and-in-vivo-characterization-of-the-tumor-specific-antigen-derived-peptide-as-a-potential-candidate-for-targeting-human-epidermal-growth-factor-receptor-2-positive-breast-carcinomas
#10
Subhani M Okarvi, Ibrahim Aljammaz
BACKGROUND/AIM: The human epidermal growth factor receptor (HER2) is considered as one of the most well-characterized tumor-associated antigens for cancer therapy and plays an important role in the growth and progression of breast cancer. Overexpression of HER2 in various cancers and the availability of its extracellular region makes it a clinically useful target for the development of tumor-antigen specific agents. In this study, we have prepared a HER2-targeted hybrid peptide as a single-photon emission computed tomography (SPECT) imaging probe and evaluated its tumor targeting potential in subcutaneous HER2-positive breast cancer xenograft models...
May 2018: Anticancer Research
https://www.readbyqxmd.com/read/29713834/the-phenotypic-effects-of-exosomes-secreted-from-distinct-cellular-sources-a-comparative-study-based-on-mirna-composition
#11
Scott Ferguson, Sera Kim, Christine Lee, Michael Deci, Juliane Nguyen
Exosomes are nano-sized vesicles composed of lipids, proteins, and nucleic acids. Their molecular landscape is diverse, and exosomes derived from different cell types have distinct biological activities. Since exosomes are now being utilized as delivery vehicles for exogenous therapeutic cargoes, their intrinsic properties and biological effects must be understood. We performed miRNA profiling and found substantial differences in the miRNA landscape of prostate cancer (PC3) and human embryonic kidney (HEK) 293 exosomes with little correlation in abundance of common miRNAs (R2  = 0...
April 30, 2018: AAPS Journal
https://www.readbyqxmd.com/read/29713021/risk-of-cardiomyopathy-and-cardiac-arrhythmias-in-patients-with-nonalcoholic-fatty-liver-disease
#12
REVIEW
Quentin M Anstee, Alessandro Mantovani, Herbert Tilg, Giovanni Targher
Nonalcoholic fatty liver disease (NAFLD) is a common, progressive liver disease that affects up to one-quarter of the adult population worldwide. The clinical and economic burden of NAFLD is mainly due to liver-related morbidity and mortality (nonalcoholic steatohepatitis, cirrhosis or hepatocellular carcinoma) and an increased risk of developing fatal and nonfatal cardiovascular disease, chronic kidney disease and certain types of extrahepatic cancers (for example, colorectal cancer and breast cancer). Additionally, there is now accumulating evidence that NAFLD adversely affects not only the coronary arteries (promoting accelerated coronary atherosclerosis) but also all other anatomical structures of the heart, conferring an increased risk of cardiomyopathy (mainly left ventricular diastolic dysfunction and hypertrophy, leading to the development of congestive heart failure), cardiac valvular calcification (mainly aortic-valve sclerosis), cardiac arrhythmias (mainly atrial fibrillation) and some cardiac conduction defects...
April 30, 2018: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29707605/scaling-up-to-study-brca2-the-zeppelin-zebrafish-mutant-reveals-a-role-for-brca2-in-embryonic-development-of-kidney-mesoderm
#13
Bridgette E Drummond, Rebecca A Wingert
Specialized renal epithelial cells known as podocytes are essential components of the filtering structures within the kidney that coordinate the process of removing waste from the bloodstream. Podocyte loss initiates many human kidney diseases as it triggers subsequent damage to the kidney, leading to progressive loss of function that culminates with end stage renal failure. Podocyte morphology, function and gene expression profiles are well conserved between zebrafish and humans, making the former a relevant model to study podocyte development and model kidney diseases...
2018: Cancer Cell & Microenvironment
https://www.readbyqxmd.com/read/29707328/the-prognostic-value-of-positron-emission-tomography-computed-tomography-in-pulmonary-metastasectomy
#14
Satoshi Shiono, Makoto Endo, Katsuyuki Suzuki, Kei Yarimizu, Kazuki Hayasaka
Background: Although positron emission tomography/computed tomography (PET/CT) findings are prognostic in lung cancer patients, the prognostic value of PET/CT findings in patients with pulmonary metastases has neither been comprehensively investigated nor clarified. The aims of this retrospective study were to evaluate the value of PET/CT and identify novel prognostic indicators for pulmonary metastasectomy. Methods: Between May 2004 and February 2017, 178 patients underwent PET/CT and resection of pulmonary metastases...
March 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29707117/impact-of-tobacco-smoking-on-the-risk-of-developing-25-different-cancers-in-the-uk-a-retrospective-study-of-422-010-patients-followed-for-up-to-30-years
#15
Louis Jacob, Moritz Freyn, Matthias Kalder, Konstantinos Dinas, Karel Kostev
Background: The aim of this study was to analyze the impact of tobacco smoking on the risk of developing 25 different cancers in patients followed for up to 30 years in general practices in the UK. Methods: This study included all individuals with at least one visit to one of 196 general practitioners' offices in the UK between January 1988 and December 2008 (index date). Only individuals with documented smoking status were included. Smokers and non-smokers were matched (1:1) by age, gender, index year, body mass index, and physician...
April 3, 2018: Oncotarget
https://www.readbyqxmd.com/read/29701197/-role-of-drug-transporters-in-rational-use-of-drugs-at-high-altitude-area
#16
Wenbin Li, Baohua Yan, Rong Wang, Zhengping Jia
Pharmacokinetics plays a key role in rational use of medicines. Many factors can affect the drug's pharmacokinetics. Previous studies mainly focused on the impact of hypoxia on hepatic drug metabolizing enzyme, but uncommon on drug transporters. Actually, drug transporter is a key factor for activation of the drugs transport across the cell membrane into the inside of cells, such as multidrug resistance protein (MDR), breast cancer resistance protein (BCRP), multidrug resistance associated protein (MRP), organic cation transporter (OCT), organic anion-transporting polypeptide (OATP), organic anion transporter (OAT), qligopeptide transporter (PEPT), etc...
March 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29699373/evaluating-the-oncogenic-and-tumor-suppressor-role-of-xpo5-in-different-tissue-tumor-types
#17
Munazza Khan, Zafaruddin Khan, Yaser Uddin, Sadaf Mustafa, Irfan Shaukat, Jianbo Pan, Naseruddin Höti
The miRNAs nuclear export protein XPO5 has been previously studied in several individual malignancies. In our recent study we have demonstrated that excess levels of XPO5 enhanced the proliferation of prostate cancer cells. Similarly, there are studies to support the inhibitory role of XPO5 in cancers. In order to evaluate discrepancies in the expression levels of XPO5 in differential tumor types, we quantified the expression of XPO5 using gene expression RNA-seq data for several tumor types which were independently confirmed by immunohistochemistry in multiple organs cancer tissue microarray (TMAs) experiment...
April 27, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29696630/quantitative-association-between-body-mass-index-and-the-risk-of-cancer-a-global-meta-analysis-of-prospective-cohort-studies
#18
Xuexian Fang, Jiayu Wei, Xuyan He, Jia Lian, Dan Han, Peng An, Tianhua Zhou, Simin Liu, Fudi Wang, Junxia Min
Numerous studies have suggested that excess body weight is associated with increased cancer risk. To examine this putative association, we performed a systematic review and quantitative meta-analysis of cohort studies reporting body mass index (BMI) and the risk of 23 cancer types. PubMed, Embase, and Web of Science were searched for cohort studies, yielding 325 articles with 1,525,052 cases. Strong positive associations were observed between BMI and endometrial cancer (RR: 1.48), esophageal adenocarcinoma (RR: 1...
April 26, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29692735/mequindox-induced-genotoxicity-and-carcinogenicity-in-mice
#19
Qianying Liu, Zhixin Lei, Qin Wu, Deyu Huang, Shuyu Xie, Xu Wang, Yuanhu Pan, Zonghui Yuan
Mequindox (MEQ), acting as an inhibitor of deoxyribonucleic acid (DNA) synthesis, is a synthetic heterocyclic N -oxides. To investigate the potential carcinogenicity of MEQ, four groups of Kun-Ming (KM) mice (50 mice/sex/group) were fed with diets containing MEQ (0, 25, 55, and 110 mg/kg) for one and a half years. The result showed adverse effects on body weights, feed consumption, hematology, serum chemistry, organ weights, relative organ weights, and incidence of tumors during most of the study period. Treatment-related changes in hematology, serum chemistry, relative weights and histopathological examinations revealed that the hematological system, liver, kidneys, and adrenal glands, as well as the developmental and reproductive system, were the main targets after MEQ administration...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29687157/hnmda-heterogeneous-network-based-mirna-disease-association-prediction
#20
Li-Hong Peng, Chuan-Neng Sun, Na-Na Guan, Jian-Qiang Li, Xing Chen
Recently, accumulating evidences have shown that microRNAs (miRNAs) could play key roles in the development and progression of multiple important human diseases. Nonetheless, due to the shortcoming of being expensive and time-consuming existing in experimental approaches, computational methods are needed for the prediction of potential miRNA-disease associations. In our study, we proposed a computational model named Heterogeneous Network-based MiRNA-Disease Association prediction (HNMDA) for the latent miRNA-disease association prediction by integrating known miRNA-disease associations, miRNA functional similarity, disease semantic similarity and Gaussian interaction profile kernel similarity...
April 23, 2018: Molecular Genetics and Genomics: MGG
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