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Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society

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https://www.readbyqxmd.com/read/29349669/positive-correlation-between-matrix-metalloproteinases-and-epithelial-to-mesenchymal-transition-and-its-association-with-clinical-outcome-in-bladder-cancer-patients
#1
R Singh, A Mandhani, V Agrawal, Minal Garg
Involvement of matrix metalloproteinases (MMPs) in the pathogenesis of urothelial carcinoma elects them to be sensitive marker for clinical and prognostic implications. MMPs regulate tumor growth and invasion by inducing epithelial-to-mesenchymal transition (EMT) which is characterized by the complex reprogramming of epithelial cells and ultimately bring about major changes in the structural organization of bladder urothelium. The present study has been undertaken to evaluate the clinical relevance of MMPs in two distinct types of bladder cancer disease...
January 18, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29307001/three-dimensional-cellular-arrangement-in-epithelial-ovarian-cancer-cell-lines-tov-21g-and-skov-3-is-associated-with-apoptosis-related-mirna-expression-modulation
#2
Aline Brito de Lima, Luciana Maria Silva, Nikole Gontijo Gonçales, Maria Raquel Santos Carvalho, Agnaldo Lopes da Silva Filho, Letícia da Conceição Braga
Epithelial ovarian cancer (EOC) is the most lethal gynecological malignancy, and the lack of chemoresistance biomarkers contributes to the poor prognosis. Cancer stem cells (CSC) have been investigated in EOC to understand its relationship with chemoresistance and recurrence. In this context, in vitro cultivation-models are important tools for CSC studies. MicroRNAs (miRNAs) play key roles in cancer, CSC regulation and apoptosis. Thus, this study aims to evaluate the tumorsphere model as CSC-enrichment method in EOC studies and investigate apoptosis-related miRNAs in tumorspheres-derived EOC cell lines...
January 6, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29177791/sr-11302-an-ap-1-inhibitor-reduces-metastatic-lesion-formation-in-ex-vivo-4d-lung-cancer-model
#3
Dhruva Kumar Mishra, Min P Kim
Activator protein (AP) -1 is a transcription factor, plays important role in cell differentiation, proliferation and apoptosis. Analysis of tumor cells grown on ex vivo 4D lung cancer model shows increase in components of AP-1, c-Fos and c-Jun in circulating tumor cells (CTC) compared to primary tumor. Our aim was to determine whether the AP-1 inhibitor SR11302 reduces metastatic lesion formation in the 4D model. Human lung cancer cell lines A549, H1299, and H460 were grown in the 4D model and treated with SR11302 (1 μM)...
November 24, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29098659/prognostic-prediction-of-oral-squamous-cell-carcinoma-by-e-cadherin-and-n-cadherin-expression-in-overall-cells-in-tumor-nests-or-tumor-cells-at-the-invasive-front
#4
Yuu Ozaki-Honda, Sachiko Seki, Mutsunori Fujiwara, Masaaki Matsuura, Shuichi Fujita, Hisazumi Ikeda, Masahiro Umeda, Takao Ayuse, Tohru Ikeda
Epithelial-mesenchymal transition (EMT) is a significant process in the invasion and metastasis of cancers including oral squamous cell carcinoma (OSCC), and the cadherin switch has been identified as one of the hallmarks of EMT. The aim of the present study was to evaluate the significance of the cadherin switch in the prognosis of OSCC and generate a model for prognostic predictions. Seventy-six biopsy and/or initial surgical specimens from OSCC patients were immunohistochemically analyzed for the expression of E-cadherin and N-cadherin in either overall OSCC cells in tumor nests or in OSCC cells at the invasive front...
November 2, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29064053/correlation-of-circulating-cd64-cd163-monocyte-ratio-and-stroma-peri-tumoral-cd163-monocyte-density-with-human-papillomavirus-infected-cervical-lesion-severity
#5
Piyawut Swangphon, Chamsai Pientong, Nuchsupha Sunthamala, Sureewan Bumrungthai, Miyuki Azuma, Pilaiwan Kleebkaow, Thumwadee Tangsiriwatthana, Ussanee Sangkomkamhang, Bunkerd Kongyingyoes, Tipaya Ekalaksananan
HPV infected cervical cells secrete mediators that are gradually changed and have influence on infiltrating M2 phenotypic monocytes in cervical lesions. However, profiles of circulating immune cells in women with cervical lesions and M2 phenotypic monocyte activity in HPV infected cervical lesions are limited. This study aimed to investigate circulating monocyte populations correlated with M2 phenotype density and its activity in HPV infected cervical lesions. HPV DNA was investigated in cervical tissues using PCR...
October 24, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28868572/upregulation-of-treg-related-genes-in-addition-with-il6-showed-the-significant-role-for-the-distant-metastasis-in-colorectal-cancer
#6
L D Miteva, N S Stanilov, G М Cirovski, Spaska Angelova Stanilova
T helper 17 (Th17) and T regulatory (Treg) cytokines appear to be contributing greatly to colorectal cancer (CRC) development and progression. The aim of the current study was to investigate the expression of Foxp3; IL10; TGFB1; IL17A; IL6 and NOS2 genes in tumor tissue, regional positive lymph nodes and distant metastasis obtained from 26 patients with advanced CRC. Quantitative real-time polymerase chain reaction (qPCR) was performed for mRNA detection by TaqMan gene expression assay. In distant metastasis, IL6 was strongly expressed, over 7...
September 3, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28822081/expression-profiling-of-the-map-kinase-phosphatase-family-reveals-a-role-for-dusp1-in-the-glioblastoma-stem-cell-niche
#7
Bradley N Mills, George P Albert, Marc W Halterman
The dual specificity phosphatases (DUSPs) constitute a family of stress-induced enzymes that provide feedback inhibition on mitogen-activated protein kinases (MAPKs) critical in key aspects of oncogenic signaling. While described in other tumor types, the landscape of DUSP mRNA expression in glioblastoma (GB) remains largely unexplored. Interrogation of the REpository for Molecular BRAin Neoplasia DaTa (REMBRANDT) revealed induction (DUSP4, DUSP6), repression (DUSP2, DUSP7-9), or mixed (DUSP1, DUSP5, DUSP10, DUSP15) DUSP transcription of select DUSPs in bulk tumor specimens...
August 18, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28766149/effects-of-vacuolar-h-atpase-inhibition-on-activation-of-cathepsin-b-and-cathepsin-l-secreted-from-mda-mb231-breast-cancer-cells
#8
Andrew Uhlman, Kelly Folkers, Jared Liston, Harshida Pancholi, Ayana Hinton
Studies indicate secreted cathepsins are involved in metastasis. V-ATPases, which are necessary for activating intracellular cathepsins, also play a role in metastasis and are targeted to the plasma membrane of metastatic breast cancer cells. We are interested in a connection between cell surface V-ATPases, activation of secreted cathepsins and the metastatic phenotype of MDA-MB231 cells. We investigated whether V-ATPase inhibition would reduce the activity of secreted cathepsin B and cathepsin L. Using cell lysates and conditioned media, we measured cathepsin B and L activity within and outside of the cells...
August 2, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28653173/human-metaplastic-breast-carcinoma-and-decorin
#9
Pia Boström, Annele Sainio, Natalja Eigėlienė, Anne Jokilammi, Klaus Elenius, Ilkka Koskivuo, Hannu Järveläinen
Metaplastic breast carcinoma (MBC) is a rare subtype of invasive breast cancer and has poor prognosis. In general, cancers are heterogeneous cellular masses comprised of different cell types and their extracellular matrix (ECM). However, little is known about the composition of the ECM and its constituents in MBC. Decorin is a ubiquitous ECM macromolecule known of its oncosuppressive activity. As such, it provides an intriguing molecule in the development of novel therapeutics for different malignancies such as MBC...
June 26, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28623530/participation-of-tumor-associated-myeloid-cells-in-progression-of-amelanotic-melanoma-rmm-tumor-line-in-f344-rats-with-particular-reference-to-mhc-class-ii-and-cd163-expressing-cells
#10
A Bondoc, H M Golbar, M Pervin, C Katou-Ichikawa, M Tanaka, T Izawa, M Kuwamura, J Yamate
Tumor progression is often influenced by infiltration of myeloid cells; depending on the M1- or M2-like activation status, these cells may have either inhibitory or promoting effects on tumor growth. We investigated the properties of tumor-associated myeloid cells in a previously established homotransplantable amelanotic melanoma (RMM tumor line) in F344 rats. RMM tumor nodules were allowed to reach the sizes of 0.5, 1, 2 and 3 cm, respectively. Immunohistochemistry and flow cytometry was performed for macrophage markers CD68 and CD163, and for the antigen-presenting cell marker, MHC class II...
June 16, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28526992/epithelial-mesenchymal-transition-emt-in-metastatic-breast-cancer-in-omani-women
#11
Ritu Lakhtakia, Adil Aljarrah, Muhammad Furrukh, Shyam S Ganguly
Breast cancer (BC) in Oman affects younger women and has a more aggressive course. Clinical and biological variables like age, pregnancy, tumor size, type, grade, receptor expression and proliferation predict disease aggression but there is no direct predictor of metastasis except lymphovascular invasion. Epithelial-mesenchymal transition (EMT) is characterized by epithelial cells losing epithelial and acquiring mesenchymal morpho-immunophenotypic characteristics. In tumors, EMT-like transitions may signify a metastatic phenotype and have features in common with cancer stem cells (CSC) which show resistance to chemotherapy...
May 19, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28409421/the-impact-of-microenvironment-on-the-synovial-sarcoma-transcriptome
#12
Huifeng Jin, Jared J Barrott, Matthew G Cable, Michael J Monument, Daniel M Lerman, Kyllie Smith-Fry, Dakota Nollner, Kevin B Jones
Synovial sarcoma (SS) is initiated by a t(X;18) chromosomal translocation and resultant SS18-SSX fusion oncogene. Only a few SS cell lines exist. None has been compared to its source tumor. In order to compare matched tumor and cell line pairs, we performed RNAseq on 3 tumor/cell line pairs from a genetically engineered mouse model of SS, as well as 2 pairs from human SS tumors. Transcriptomes of mouse tumors and derivative cell lines deviated significantly. Differentially expressed genes highlighted inflammatory infiltrates and metabolism...
April 13, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28028679/hfe-variants-and-the-expression-of-iron-related-proteins-in-breast-cancer-associated-lymphocytes-and-macrophages
#13
Oriana Marques, Ana Rosa, Luciana Leite, Paula Faustino, Alexandra Rêma, Berta Martins da Silva, Graça Porto, Carlos Lopes
The association of HFE (High Iron FE) major variants with breast cancer risk and behavior has been a matter of discussion for a long time. However, their impact on the expression of iron-related proteins in the breast cancer tissue has never been addressed. In the present study, hepcidin, ferroportin 1, transferrin receptor 1 (TfR1), and ferritin expressions, as well as tissue iron deposition were evaluated in a collection of samples from breast cancers patients and analyzed according to the patients' HFE genotype...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27975329/density-dependent-regulation-of-glioma-cell-proliferation-and-invasion-mediated-by-mir-9
#14
Mark Katakowski, Nicholas Charteris, Michael Chopp, Evgeniy Khain
The phenotypic axis of invasion and proliferation in malignant glioma cells is a well-documented phenomenon. Invasive glioma cells exhibit a decreased proliferation rate and a resistance to apoptosis, and invasive tumor cells dispersed in brain subsequently revert to proliferation and contribute to secondary tumor formation. One miRNA can affect dozens of mRNAs, and some miRNAs are potent oncogenes. Multiple miRNAs are implicated in glioma malignancy, and several of which have been identified to regulate tumor cell motility and division...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27761799/neuropeptide-levels-as-well-as-neprilysin-activity-decrease-in-renal-cell-carcinoma
#15
Nuray Erin, Tümay İpekçi, Bahar Akkaya, İrem Hicran Özbudak, Mehmet Baykara
Calcitonin Gene-related Peptide (CGRP), Vasoactive Intestinal Peptide (VIP) and Substance P (SP) are sensory neuropeptides which may alter cancer growth through modulation of chronic inflammation. We recently reported that SP suppresses breast cancer growth and metastasis through neuroimmune modulation. These neuropeptides are hydrolyzed by Neprilysin (NEP) to bioactive fragments. Decreased activity of NEP was reported in clear cell and chromophobe type renal cell carcinoma (RCC). It is however not known how the levels of neuropeptides hydrolyzed with NEP changes in RCC...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27654881/stiffened-extracellular-matrix-and-signaling-from-stromal-fibroblasts-via-osteoprotegerin-regulate-tumor-cell-invasion-in-a-3-d-tumor-in-situ-model
#16
Joshua S McLane, Lee A Ligon
Several changes have been described in the stroma surrounding a tumor, including changes in cellular composition, altered extracellular matrix composition and organization, and increases in stiffness. Tumor cells are influenced by the composition, organization, and mechanical properties of the microenvironment, and by signals from stromal cells. Here we sought to test whether signaling from stromal fibroblasts and/or the small change in stiffness observed in vivo surrounding epithelial tumors regulates tumor cell invasion from a model of a tumor in situ...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27457339/investigating-effects-of-acidic-ph-on-proliferation-invasion-and-drug-induced-apoptosis-in-lymphoblastic-leukemia
#17
Mahbobeh Bohloli, Amir Atashi, Masoud Soleimani, Saeid Kaviani, Azadeh Anbarlou
Some studies have shown that extracellular pH in tumors, which results in tumor progression, is less than that in normal tissues. The aim of this study was to investigate the effects of extracellular acidic pH on proliferation, invasion, and drug-induced apoptosis in acute lymphoblastic cells. The cells were cultured in different pH (pH 6.6 and pH 7.4) for 12 days. Cell proliferation was assessed by MTT assay and cell invasion was assayed by invasion assay and gene expression analysis of MMP-9. Drug-induced apoptosis was evaluated after exposure to doxorubicin for 24 hours by annexin V/PI staining and gene expression analysis of BAX pro-apoptotic protein...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27392414/biopathological-significance-of-tlr9-expression-in-cancer-cells-and-tumor-microenvironment-across-invasive-breast-carcinomas-subtypes
#18
Didier Meseure, Sophie Vacher, Kinan Drak Alsibai, Martine Trassard, André Nicolas, Renaud Leclere, Florence Lerebours, Jean Marc Guinebretiere, Elisabetta Marangoni, Rosette Lidereau, Ivan Bieche
Toll-like receptors (TLRs) are pattern recognition receptors mainly expressed by cells of the immune system but also by epithelial tumor cells. Little is known about expression patterns of TLR genes in breast tumors, and their clinical significance is unclear. The aim of our study was to investigate expression of TLRs pathway components in pre-invasive breast lesions and invasive breast carcinomas (IBCs). We used RT-PCR assays to quantify mRNA levels of the 10 TLR genes and genes involved in TLR pathways in 350 breast tumors from patients with known clinical/pathological status and long-term outcome...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27334300/active-secretion-of-dimerized-s100a11-induced-by-the-peroxisome-in-mesothelioma-cells
#19
Satomi Saho, Hiroki Satoh, Eisaku Kondo, Yusuke Inoue, Akira Yamauchi, Hitoshi Murata, Rie Kinoshita, Ken-Ichi Yamamoto, Junichiro Futami, Endy Widya Putranto, I Made Winarsa Ruma, I Wayan Sumardika, Chen Youyi, Ken Suzawa, Hiromasa Yamamoto, Junichi Soh, Shuta Tomida, Yoshihiko Sakaguchi, Ken Saito, Hidekazu Iioka, Nam-Ho Huh, Shinichi Toyooka, Masakiyo Sakaguchi
S100A11, a small Ca(2+) binding protein, acts extracellularly as a mediator of cancer progression. That raises the question of how a protein that lacks the classical secretory signal is able to be secreted outside cells without being damaged. Some insights into this question have been obtained, and there has been accumulating evidence indicating a pivotal role of a non-classical vesicle-mediated pathway using lysosomes or peroxisomes for the protein secretion. To obtain a more precise insight into the secretory mechanism of S100A11, we first screened representative cancer cells exhibiting significantly active secretion of S100A11...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/27106232/potential-role-of-trail-in-metastasis-of-mutant-kras-expressing-lung-adenocarcinoma
#20
Shyama Pal, Prayag J Amin, K B Sainis, Bhavani S Shankar
Apo2L/tumor necrosis factor (TNF)-α-related apoptosis-inducing ligand (TRAIL, TNFSF10) is an important cytokine in the tumor microenvironment and plays a major role in the balance of cell survival/death pathways. Bioinformatic analyses of 839 adenocarcinoma (AC) and 356 squamous cell lung carcinoma patient data (SCC) by cBioPortal (genomic analyses) shows that TRAIL expression leads to differential outcomes of disease free survival in AC and SCC. Oncomine datamining (transcript analyses) reveal that TRAIL is upregulated in 167 SCC as compared to 350 AC patients from six data sets...
December 2016: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
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