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Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society

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https://www.readbyqxmd.com/read/30255421/hypoxia-induces-the-acquisition-of-cancer-stem-like-phenotype-via-upregulation-and-activation-of-signal-transducer-and-activator-of-transcription-3-stat3-in-mda-mb-231-a-triple-negative-breast-cancer-cell-line
#1
Hoda Soleymani Abyaneh, Nidhi Gupta, Abdulraheem Alshareef, Keshav Gopal, Afsaneh Lavasanifar, Raymond Lai
The finding that hypoxia can induce cancer stemness in various experimental models is in agreement with the conceptual basis of cancer cell plasticity. Here, we aimed to gain insights into the molecular basis of hypoxia-induced cancer cell plasticity in triple negative breast cancer (TNBC). To achieve this goal, we employed our previously published in-vitro model of TNBC, in which a small subset of stem-like cells can be distinguished from the bulk cell population based on their responsiveness to a Sox2 reporter...
September 25, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/30203411/t-cell-clustering-in-neoplastic-follicles-of-follicular-lymphoma
#2
Patrick Schnotalle, Karoline Koch, Rex K H Au-Yeung, Sarah Reinke, Karsten Winter, Markus Loeffler, Ulf-Dietrich Braumann, Wolfram Klapper
The nonneoplastic microenvironment is abundant in follicular lymphoma. Its composition has been reported to be associated with the course of the disease. Lack of animal models hampers studies of interaction between lymphoma and bystander cells. We aimed to identify indicators of cellular interaction exemplified by nonrandom distribution of cell types within neoplastic follicles. Physiological germinal centers and follicles in follicular lymphoma were stained to identify macrophages, all T, follicular T-helper, dendritic and B cells...
September 11, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/30145722/cerebrospinal-fluid-hyaluronan-and-neurofibromatosis-type-2
#3
Prasanth S Ariyannur, Narendranath Vikkath, Ashok B Pillai
Neurofibromatosis type 2 (NF-2) is associated with mainly three types of recurrent benign tumors restricted to the central nervous system: schwannoma, meningioma and ependymoma. The absence of the protein NF2/Merlin causes an uninterrupted cell proliferation cascade originating from an abnormal interaction between an extracellular mucopolysaccharide, hyaluronan (HA), and schwann cell surface CD44 receptor, which has been identified as one of the central causative factors for schwannoma. Most tumors in NF-2 have a predilection to originate from either arachnoid cap cells or schwann cells of the cisternal portion of nerve rootlets that share a continuous exposure to cerebrospinal fluid (CSF)...
August 25, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/30091031/skewed-signaling-through-the-receptor-for-advanced-glycation-end-products-alters-the-proinflammatory-profile-of-tumor-associated-macrophages
#4
REVIEW
Armando Rojas, Paulina Araya, Jacqueline Romero, Fernando Delgado-López, Ileana Gonzalez, Carolina Añazco, Ramon Perez-Castro
Tumors are complex tissues composed of variable amounts of both non-cellular components (matrix proteins) and a multitude of stromal cell types, which are under an active cross-talk with tumor cells. Tumor-associated macrophages (TAMs) are the major leukocyte population among the tumor-infiltrating immune cells. Once they are infiltrated into tumor stroma they undergo a polarized activation, where the M1 and M2 phenotypes represent the two extreme of the polarization heterogeneity spectrum. It is known that TAMs acquire a specific phenotype (M2), oriented toward tumor growth, angiogenesis and immune-suppression...
August 8, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/30039195/ascites-il-10-promotes-ovarian-cancer-cell-migration
#5
Denis Lane, Isabelle Matte, Perrine Garde-Granger, Paul Bessette, Alain Piché
Ovarian cancer (OC) ascites is an inflammatory and immunosuppressive tumor environment characterized by the presence of various cytokines, chemokines and growth factors. The presence of high concentrations of these cytokines/chemokines in ascites is associated with a more aggressive tumor phenotype. IL-10 is an immunosuppressive cytokine for which high expression has been associated with poor prognosis in some cancers. However, its role on OC tumor cells has not been explored. Therefore, the aim of the current study was to elucidate the role of ascites IL-10 on the proliferation, migration and survival of OC cell lines...
July 23, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/30008066/tumor-associated-t-lymphocytes-and-macrophages-are-decreased-in-endometrioid-endometrial-carcinoma-with-melf-pattern-stromal-changes
#6
Dmitry Aleksandrovich Zinovkin, Md Zahidul Islam Pranjol, Il'ya Andreevich Bilsky, Valeriya Alexandrovna Zmushko
Microcystic, elongated, fragmented (MELF)-pattern is an unusual morphology of myometrial invasive front in endometrioid endometrial carcinoma (EA). The aim of the study was to investigate potential correlation between MELF-pattern and peritumoral inflammatory immune response. A total of 96 out of 368 patients were included in this study. CD3, CD20, CD57. CD68 and S100 markers were used for the detection of tumor-associated T-lymphocytes (TAT), tumor-associated B-lymphocytes (TAB), tumor-associated NK-lymphocytes (NK), tumor-associated macrophages and dendritic cells respectively...
July 14, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29779090/8th-international-conference-on-tumor-microenvironment-lisbon-portugal-june-10-14-2018
#7
Pedro Baleia
No abstract text is available yet for this article.
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29721824/exosomes-definition-role-in-tumor-development-and-clinical-implications
#8
REVIEW
Alberto Carretero-González, Irene Otero, Lucía Carril-Ajuria, Guillermo de Velasco, Luis Manso
Exosomes are microvesicles released by cells in both physiological and pathological situations. They are surrounded by a lipid bilayer with proteins derived from the origin cell, and contain a variety of molecules, such as nucleic acids. They represent an emerging mechanism of intercellular communication, and they play an important role in the pathogenesis of cancer, stimulating proliferation and aggressiveness of cancer cells, inducing a microenvironment favorable to tumor development and controlling immune responses...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29637435/the-influence-of-breast-tumour-derived-factors-and-wnt-antagonism-on-the-transformation-of-adipose-derived-mesenchymal-stem-cells-into-tumour-associated-fibroblasts
#9
Malini Visweswaran, Kevin N Keane, Frank Arfuso, Rodney J Dilley, Philip Newsholme, Arun Dharmarajan
Within the tumour stroma, a heterogeneous population of cell types reciprocally regulates cell proliferation, which considerably affects the progression of the disease. In this study, using tumour conditioned medium (TCM) derived from breast tumour cell lines - MCF7 and MDA MB 231, we have demonstrated the differentiation of adipose-derived mesenchymal stem cells (ADSCs) into tumour-associated fibroblasts (TAFs). Since the Wnt signalling pathway is a key signalling pathway driving breast tumour growth, the effect of the Wnt antagonist secreted frizzled-related protein 4 (sFRP4) was also examined...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29589335/matrix-metalloproteinase-8-could-it-benefit-the-car-t-cell-therapy-of-solid-tumors-a-commentary-on-therapeutic-potential
#10
Alireza Mardomi, Saeid Abediankenari
No abstract text is available yet for this article.
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29502307/role-of-the-nervous-system-in-tumor-angiogenesis
#11
REVIEW
Nyanbol Kuol, Lily Stojanovska, Vasso Apostolopoulos, Kulmira Nurgali
The development of cancer involves an intricate process, wherein many identified and unidentified factors play a role. Tumor angiogenesis, growth of new blood vessels, is one of the major prerequisites for tumor growth as tumor cells rely on adequate oxygen and nutrient supply as well as the removal of waste products. Growth factors including VEGF orchestrate the development of angiogenesis. In addition, nervous system via the release of neurotransmitters contributes to tumor angiogenesis. The nervous system governs functional activities of many organs, and, as tumors are not independent organs within an organism, this system is integrally involved in tumor growth and progression via regulating tumor angiogenesis...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29455338/extracellular-atp-is-differentially-metabolized-on-papillary-thyroid-carcinoma-cells-surface-in-comparison-to-normal-cells
#12
Ana Paula Santin Bertoni, Rafael Paschoal de Campos, Marisa Tsao, Elizandra Braganhol, Tania Weber Furlanetto, Márcia Rosângela Wink
The incidence of differentiated thyroid cancer has been increasing. Nevertheless, its molecular mechanisms are not well understood. In recent years, extracellular nucleotides and nucleosides have emerged as important modulators of tumor microenvironment. Extracellular ATP is mainly hydrolyzed by NTPDase1/CD39 and NTPDase2/CD39L1, generating AMP, which is hydrolyzed by ecto-5'-nucleotidase (CD73) to adenosine, a possible promoter of tumor growth and metastasis. There are no studies evaluating the expression and functionality of these ectonucleotidases on normal or tumor-derived thyroid cells...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29404962/recovery-of-immunoglobulin-vj-recombinations-from-pancreatic-cancer-exome-files-strongly-correlates-with-reduced-survival
#13
Jacob C Kinskey, Yaping N Tu, Wei Lue Tong, John M Yavorski, George Blanck
We assessed pancreatic cancer, lymphocyte infiltrates with a computational genomics approach. We took advantage of tumor-specimen exome files available from the cancer genome atlas to mine T- and B-cell immune receptor recombinations, using highly efficient, scripted algorithms established in several previous reports. Surprisingly, the results indicated that pancreatic cancer exomes represent one of the highest level yields for immune receptor recombinations, significantly higher than two comparison cancers used in this study, head and neck and bladder cancer...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29357011/immunogenomics-a-negative-prostate-cancer-outcome-associated-with-tcr-%C3%AE-%C3%AE-recombinations
#14
Yaping N Tu, Wei Lue Tong, John M Yavorski, George Blanck
We developed a scripted algorithm, based on previous, earlier editions of the algorithm, to mine prostate cancer exome files for T-cell receptor (TcR) recombination reads: Reads representing TcR gene recombinations were identified in 497 prostate cancer exome files from the cancer genome atlas (TCGA). As has been reported for melanoma, co-detection of productive TcR-α and TcR-β recombination reads correlated with an RNA expression signature representing T-cell exhaustion, particularly with high RNA levels for PD-1 and PD-L1, in comparison to several different control sets of samples...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
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
#15
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...
June 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
#16
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...
June 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29603062/peripheral-blood-cell-interactions-of-cancer-derived-exosomes-affect-immune-function
#17
Heather R Ferguson Bennit, Amber Gonda, James R W McMullen, Janviere Kabagwira, Nathan R Wall
Cancer-derived exosomes are constitutively produced and secreted into the blood and biofluids of their host patients providing a liquid biopsy for early detection and diagnosis. Given their ubiquitous nature, cancer exosomes influence biological mechanisms that are beneficial to the tumor cells where they are produced and the microenvironment in which these tumors exist. Accumulating evidence suggests that exosomes transport proteins, lipids, DNA, mRNA, miRNA and long non coding RNA (lncRNA) for the purpose of cell-cell and cell-extracellular communication...
March 30, 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
#18
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)...
December 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
#19
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...
December 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
#20
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...
December 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
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