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https://www.readbyqxmd.com/read/29454273/mechanosensitive-adhesion-complexes-in-epithelial-architecture-and-cancer-onset
#1
REVIEW
Minerva Bosch-Fortea, Fernando Martín-Belmonte
Mechanical signals from the extracellular space are paramount to coordinate tissue morphogenesis and homeostasis. Although there is a wide variety of cellular mechanisms involved in transducing extracellular forces, recent literature emphasizes the central role of two main adhesion complexes in epithelial mechanosensitive processes: focal adhesions and adherens junctions. These biomechanical sensors can decode physical signals such as matrix stiffness or intercellular tension into a wide range of coordinated cellular responses, which can impact cell differentiation, migration, and proliferation...
February 14, 2018: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/29454243/health-inequities-faced-by-ethiopian-migrant-domestic-workers-in-lebanon
#2
Bina Fernandez
This paper investigates the healthcare needs, access to healthcare, and healthcare strategies of Ethiopian migrant domestic workers (MDWs) in Lebanon, drawing on qualitative empirical research. The analysis focusses on four types of health care needs: minor illnesses, pregnancies, serious illnesses (such as cancer, tuberculosis or heart problems), and emergencies (due to accidents, suicide attempts or assaults). Predictably, access to healthcare is distinctly differentiated according to an MDW's status as a documented, freelancer, or undocumented worker...
February 14, 2018: Health & Place
https://www.readbyqxmd.com/read/29453900/downregulation-of-reticulocalbin-1-differentially-facilitates-apoptosis-and-necroptosis-in-human-prostate-cancer-cells
#3
Xiaofei Liu, Nianzhao Zhang, Dawei Wang, Deyu Zhu, Quan Yuan, Xiulei Zhang, Lilin Qian, Huanmin Niu, Yi Lu, Guijie Ren, Keli Tian, Huiqing Yuan
Reticulocalbin 1 (RCN1), an endoplasmic reticulum (ER)-resident Ca 2+ -binding protein, is dysregulated in cancers, but its pathophysiological roles are largely unclear. Here, we demonstrate that RCN1 is overexpressed in clinical prostate cancer (PCa) samples, associated with Cyclin B, not Cyclin D1 expression, compared to that of benign tissues in a Chinese Han population. Downregulation of endogenous RCN1 significantly suppresses PCa cell viability and arrests the cell cycles of DU145 and LNCaP cells at the S and G2/M phases, respectively...
February 17, 2018: Cancer Science
https://www.readbyqxmd.com/read/29453678/differential-expression-of-the-tweak-receptor-fn14-in-idh1-wild-type-and-mutant-gliomas
#4
David S Hersh, Sen Peng, Jimena G Dancy, Rebeca Galisteo, Jennifer M Eschbacher, Rudy J Castellani, Jonathan E Heath, Teklu Legesse, Anthony J Kim, Graeme F Woodworth, Nhan L Tran, Jeffrey A Winkles
The TNF receptor superfamily member Fn14 is overexpressed by many solid tumor types, including glioblastoma (GBM), the most common and lethal form of adult brain cancer. GBM is notable for a highly infiltrative growth pattern and several groups have reported that high Fn14 expression levels can increase tumor cell invasiveness. We reported previously that the mesenchymal and proneural GBM transcriptomic subtypes expressed the highest and lowest levels of Fn14 mRNA, respectively. Given the recent histopathological re-classification of human gliomas by the World Health Organization based on isocitrate dehydrogenase 1 (IDH1) gene mutation status, we extended this work by comparing Fn14 gene expression in IDH1 wild-type (WT) and mutant (R132H) gliomas and in cell lines engineered to overexpress the IDH1 R132H enzyme...
February 16, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29453534/nanoparticles-caused-oxidative-imbalance
#5
Mariusz Zuberek, Agnieszka Grzelak
Application of nanomaterials in nearly every single branch of industry results in their accumulation in both abiotic environment and tissues of living organisms. Despite the common use of nanomaterials, we are not able to precisely define their toxicity towards humans and surrounding biota. Although we were able to determine final effects of chronic exposure to nanoparticles which consist of many pathologies such as respiratory diseases, allergies, diseases of cardiovascular system, disorders in embryonic life differentiation and growth disorders, toxic effects on the immune system and cancers...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29453336/alternative-splicing-of-alcam-enables-tunable-regulation-of-cell-cell-adhesion-through-differential-proteolysis
#6
Katie E Hebron, Elizabeth Y Li, Shanna A Arnold Egloff, Ariana K von Lersner, Chase Taylor, Joep Houkes, David K Flaherty, Adel Eskaros, Thomas P Stricker, Andries Zijlstra
While many adhesion receptors are known to influence tumor progression, the mechanisms by which they dynamically regulate cell-cell adhesion remain elusive. We previously identified Activated Leukocyte Cell Adhesion Molecule (ALCAM) as a clinically relevant driver of metastasis and hypothesized that a tunable mechanism of ectodomain shedding regulates its contribution to dissemination. To test this hypothesis, we examined an under-explored ALCAM splice variant (ALCAM-Iso2) and demonstrated that loss of the membrane-proximal region of ALCAM (exon 13) increased metastasis four-fold...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453230/role-of-biomarkers-in-predicting-the-occurrence-of-thyroid-neoplasms-in-radiation-exposed-children
#7
Joseph Shulan, Leonid Vydro, Arthur B Schneider, Dan Mihailescu
With increasing numbers of childhood cancer survivors who were treated with radiation, there is a need to evaluate potential biomarkers that could signal an increased risk of developing thyroid cancer. We aimed to examine the relationships between thyrotropin and thyroglobulin levels and the risk of developing thyroid nodules and cancer in a cohort of radiation exposed children. 806 subjects who were irradiated in the neck area as children were examined and followed for up to 25 years. All subjects underwent a clinical examination, measurements of thyrotropin, thyroglobulin levels and thyroid imaging...
February 16, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29453165/endoscopic-submucosal-dissection-for-the-diagnosis-and-therapy-of-pedunculated-gastric-cancer-with-prolapse-into-the-duodenal-bulb-a-case-report
#8
Norihiko Suzuki, Masashi Yoshida, Hironori Ohdaira, Tomonori Imakita, Nobuhiro Tsutsui, Yasunobu Kobayashi, Junji Takahashi, Shinya Okada, Masaki Kitajima, Yutaka Suzuki
INTRODUCTION: Preoperative diagnosis of gastric cancer invasion is not always sufficiently accurate. Diagnostic endoscopic submucosal dissection (ESD) can be performed for the purpose of accurate decision making and to avoid partial treatment vs aggressive over-treatment. We present a patient with the gastric cancer with indeterminate pre-operative diagnosis for depth of the invasion. CASE PRESENTATION: A 70-year-old man presented at our hospital because both anti-Helicobacter pylori (Hp) IGG antibody and serum pepsinogen (PG) levels were classified as positive...
February 9, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29452959/differential-expressions-of-mdm2-and-tap73-in-cancer-and-cancer-adjacent-tissues-in-patients-with-non-small-cell-lung-carcinoma
#9
B Wang, X Liu, H Liu, J Guo, T Zhang, N Zhou, Y Ma, H Yu, L Chen, Z Ren, K Fan, X Tian
AIM: To investigate the differences in mRNA and protein expressions of MDM2 (mouse double minute 2 homolog) and P73 in cancer and cancer-adjacent tissues in patients with non-small-cell lung carcinoma (NSCLC). MATERIALS AND METHODS: We compared the protein expressions of MDM2 and P73 in lung cancer and cancer-adjacent tissues in NSCLC patients by IHC (immunohistochemistry) and WB (Western blot). We divided the NSCLC patients into two subgroups, adenocarcinoma and squamous carcinoma...
February 13, 2018: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/29452949/estimation-of-the-effectiveness-ratio-%C3%AE-%C3%AE-for-resistant-cancer-cells-in-u87mg-human-glioblastoma
#10
Perla Marmolejo-León, Erika Patricia Azorín-Vega, Nallely Jiménez-Mancilla, Héctor Javier Mendoza-Nava, Eleni Mitsoura, Benjamín Pineda, Eugenio Torres-García
Glioblastoma contains self-renewing, tumorigenic cancer stem-like cells that contribute to tumor initiation and therapeutic resistance. The aim of this research was to estimate and compare the effectiveness ratio (α/β) of stem-like cells and differentiated glioma cells derived from the U87MG glioblastoma cell line. Cell survival experiments were obtained in a dose range of 0-20 Gy (13.52 ± 0.09 Gy/h) as a hyperfractionationated accelerated radiotherapy scheme. Biochemical characterization of the post-irradiated cells was performed by flow cytometry analysis and the percentage of stem-like cells that resisted irradiation was determined by the CD133 expression...
January 11, 2018: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29452913/photo-immobilized-egf-chemical-gradients-differentially-impact-breast-cancer-cell-invasion-and-drug-response-in-defined-3d-hydrogels
#11
Stephanie A Fisher, Roger Y Tam, Ana Fokina, M Mohsen Mahmoodi, Mark D Distefano, Molly S Shoichet
Breast cancer cell invasion is influenced by growth factor concentration gradients in the tumor microenvironment. However, studying the influence of growth factor gradients on breast cancer cell invasion is challenging due to both the complexities of in vivo models and the difficulties in recapitulating the tumor microenvironment with defined gradients using in vitro models. A defined hyaluronic acid (HA)-based hydrogel crosslinked with matrix metalloproteinase (MMP) cleavable peptides and modified with multiphoton labile nitrodibenzofuran (NDBF) was synthesized to photochemically immobilize epidermal growth factor (EGF) gradients...
February 13, 2018: Biomaterials
https://www.readbyqxmd.com/read/29452846/differential-role-of-gpab-and-sida-gene-expressions-in-relation-to-virulence-in-aspergillus-species-from-patients-with-invasive-aspergillosis
#12
Nayereh Ghods, Mehraban Falahati, Maryam Roudbary, Shirin Farahyar, Masoud Shamaei, Mahin Pourabdollah, Farhad Seif
The virulence genes in invasive aspergillosis (IA) have not been analyzed adequately. The present study was designed to evaluate the expression of gpaB and sidA genes, which are important virulence genes in Aspergillus spp. from bronchoalveolar lavage (BAL) samples. Direct examination and culture on Czapek Agar and Sabouraud Dextrose Agar media were performed for 600 BAL specimens isolated from patients with possible aspergillosis. A Galactomannan ELISA assay was also carried out. The expression levels of the gpaB and sidA genes in isolates were analyzed using quantitative real-time PCR (qRT-PCR)...
February 3, 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29452772/metabolic-and-lipidomic-reprogramming-in-renal-cell-carcinoma-subtypes-reflects-regions-of-tumor-origin
#13
Elke Schaeffeler, Florian Büttner, Anna Reustle, Verena Klumpp, Stefan Winter, Steffen Rausch, Pascale Fisel, Jörg Hennenlotter, Stephan Kruck, Arnulf Stenzl, Judith Wahrheit, Denise Sonntag, Marcus Scharpf, Falko Fend, Abbas Agaimy, Arndt Hartmann, Jens Bedke, Matthias Schwab
BACKGROUND: Renal cell carcinoma (RCC) consists of prognostic distinct subtypes derived from different cells of origin (eg, clear cell RCC [ccRCC], papillary RCC [papRCC], and chromophobe RCC [chRCC]). ccRCC is characterized by lipid accumulation and metabolic alterations, whereas data on metabolic alterations in non-ccRCC are limited. OBJECTIVE: We assessed metabolic alterations and the lipid composition of RCC subtypes and ccRCC-derived metastases. Moreover, we elucidated the potential of metabolites/lipids for subtype classification and identification of therapeutic targets...
February 13, 2018: European Urology Focus
https://www.readbyqxmd.com/read/29452382/simulated-ablation-for-detection-of-cells-impacting-paracrine-signalling-in-histology-analysis
#14
Jake P Taylor-King, Etienne Baratchart, Andrew Dhawan, Elizabeth A Coker, Inga Hansine Rye, Hege Russnes, S Jon Chapman, David Basanta, Andriy Marusyk
Intra-tumour phenotypic heterogeneity limits accuracy of clinical diagnostics and hampers the efficiency of anti-cancer therapies. Dealing with this cellular heterogeneity requires adequate understanding of its sources, which is extremely difficult, as phenotypes of tumour cells integrate hardwired (epi)mutational differences with the dynamic responses to microenvironmental cues. The later comes in form of both direct physical interactions, as well as inputs from gradients of secreted signalling molecules. Furthermore, tumour cells can not only receive microenvironmental cues, but also produce them...
February 14, 2018: Mathematical Medicine and Biology: a Journal of the IMA
https://www.readbyqxmd.com/read/29452344/overexpression-of-blm-promotes-dna-damage-and-increased-sensitivity-to-platinum-salts-in-triple-negative-breast-and-serous-ovarian-cancers
#15
N J Birkbak, Y Li, S Pathania, A Greene-Colozzi, M Dreze, C Bowman-Colin, Z Sztupinszki, M Krzystanek, M Diossy, N Tung, P D Ryan, J E Garber, D P Silver, J D Iglehart, Z C Wang, D Szuts, Z Szallasi, A L Richardson
Background: Platinum based therapy is an effective treatment for a subset of triple negative breast cancer and ovarian cancer patients. In order to increase response rate and decrease unnecessary use, robust biomarkers that predict response to therapy are needed. Patients and methods: We performed an integrated genomic approach combining differential analysis of gene expression and DNA copy number in sensitive compared to resistant triple negative breast cancers in two independent neoadjuvant cisplatin treated cohorts...
February 14, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29452216/upregulation-of-tiam1-contributes-to-cervical-cancer-disease-progression-and-indicates-poor-survival-outcome
#16
Yang Yang, Qunying Wu, Nan Li, Shuanlong Che, Tiefeng Jin, Yunze Nan, Zhenhua Lin, Liyan Chen
T lymphoma invasion and metastasis 1 (Tiam1), a guanine nucleotide exchange factor, is involved in the tumorigenesis of a number of malignancies. This study was aimed to explore the role of Tiam1 in cervical cancer progression, and evaluate the prognostic values. Tiam1 protein expression levels were detected by immunohistochemical (IHC) staining in 174 cervical cancer tissues, 92 of CINs (Cervical intraepithelial neoplasia) and 32 of normal cervical epithelia tissues. Clinicopathological parameters and overall survival data were collected and compared between different Tiam1 statuses...
February 13, 2018: Human Pathology
https://www.readbyqxmd.com/read/29451962/nucleopeptide-assemblies-selectively-sequester-atp-in-cells
#17
Huaimin Wang, Zhaoqianqi Feng, Yanan Qin, Jiaqing Wang, Bing Xu
Here we report that assemblies of nucleopeptides selectively sequestrate ATP in complex conditions (e.g., serum and cytosol). We develop assemblies of nucleopeptides that selectively sequester ATP over ADP. Counteracting enzymes interconvert ATP and ADP to modulate the nanostructures formed by the nucleopeptides and the nucleotides. The nucleopeptides, sequestering ATP effectively in cells, slow down efflux pumps in multidrug resistance cancer cells, thus boosting the efficacy of an anticancer drug. Examining additional 11 nucleopeptides (including D- and L-enantiomers) yields five more nucleopeptides that differentiate ATP and ADP via either precipitation or gelation...
February 16, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29451777/filomicelles-deliver-a-chemo-differentiation-combination-of-paclitaxel-and-retinoic-acid-that-durably-represses-carcinomas-in-liver-to-prolong-survival
#18
Praful Nair, Cory Alvey, Xiaoling Jin, Jerome Irianto, Irena Ivanovska, Dennis E Discher
Drug resistance and relapse is common in cancer treatments with chemotherapeutics, and while drug combinations with naturally occurring, differentiation-inducing retinoic acid (RA) are highly successful against one type of liquid tumor, solid tumors present major problems for delivery. Here, inspired by filoviruses that can be microns in length, flexible filomicelles that self-assemble from an amphiphilic block copolymer (PEG-PCL) are shown to effectively deliver RA and paclitaxel (TAX) to several solid tumor models, particularly in liver...
February 16, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29451738/well-differentiated-grade-3-pancreatic-neuroendocrine-tumors-compared-with-related-neoplasms-a-morphologic-study
#19
Carlie S Sigel, Vitor Werneck Krauss Silva, Michelle D Reid, David Chhieng, Olca Basturk, Keith M Sigel, Tanisha D Daniel, David S Klimstra, Laura H Tang
BACKGROUND: Pancreatic neuroendocrine neoplasms with a Ki-67 labeling index greater than 20% were reclassified in 2017 by the World Health Organization into well differentiated (WD) and poorly differentiated grade 3 neuroendocrine carcinoma (NEC). The authors describe the cytologic features of grade 3 WD pancreatic neuroendocrine neoplasms compared with grade 2 neoplasms and NEC. METHODS: Fine-needle aspirates from 65 pancreatic neuroendocrine neoplasms were reviewed, and their cytomorphologic features were compared across grade 2, WD grade 3, and PD small cell type (PD-S), large cell type (PD-L), and type not otherwise specified (PD-NOS) neoplasms...
February 16, 2018: Cancer Cytopathology
https://www.readbyqxmd.com/read/29451723/clickable-polyamine-derivatives-as-chemical-probes-for-the-polyamine-transport-system
#20
Roeland Vanhoutte, Jan Pascal Kahler, Shaun Martin, Sarah van Veen, Steven Verhelst
Polyamines are essential for cell growth and differentiation, but their trafficking by the polyamine transport system is not fully understood. In this paper, we describe the synthesis of several azido-derivatized polyamines for easy conjugation by click chemistry. Attachment of a BODIPY-dye gave fluorescent polyamine probes, which were tested in cell culture. The linear probe series showed superior cellular uptake compared with the probes where the dye was attached to a branch on one of the central amines. Interestingly, the linear probes accumulated rapidly in cancer cells (MCF-7), but not in non-tumorigenic cells (MCF-10A)...
February 16, 2018: Chembiochem: a European Journal of Chemical Biology
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