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https://www.readbyqxmd.com/read/29666832/structure-and-function-analysis-in-circulating-tumor-cells-using-nanotechnology-to-study-nuclear-size-in-prostate-cancer
#1
REVIEW
Nu Yao, Yu-Jen Jan, Shirley Cheng, Jie-Fu Chen, Leland Wk Chung, Hsian-Rong Tseng, Edwin M Posadas
Professor Donald Coffey and his laboratory pioneered studies showing the relationships between nuclear shape and cellular function. In doing so, he and his students established the field of nuclear morphometry in prostate cancer. By using perioperative tissues via biopsies and surgical sampling, Dr. Coffey's team discovered that nuclear shape and other pathologic features correlated with clinical outcome measures. Cancer cells also exist outside of solid tumor masses as they can be shed from both primary and metastatic lesions into the circulatory system...
2018: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/29665393/comparative-experimental-theoretical-studies-on-the-egfr-dimerization-under-the-effect-of-egf-egf-analogues-binding-highlighting-the-importance-of-egf-egfr-interactions-at-site-iii-interface
#2
Masomeh Mehrabi, Hamid Mahdiuni, Hassan Rasouli, Kamran Mansouri, Mohsen Shahlaie, Reza Khodarahmi
Epidermal growth factor receptors (EGFRs) and their cytoplasmic tyrosine kinases play significant roles in cell proliferation and signaling. All the members of the EGFR/ErbB family are primary goals for cancer therapy, particularly for tumors of breast, cervix, ovaries, kidney, esophagus, prostate and non-small-cell lung carcinoma and head and neck tumors. However, the therapeutic ability of accessible anti-ErbB agents is limited. Therefore, recognizing EGF analogues or small organic molecules with high affinity for the extracellular domain of the EGFR is a critical target on cancer research...
April 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29665274/combining-multiplex-sers-nanovectors-and-multivariate-analysis-for-in-situ-profiling-of-circulating-tumor-cell-phenotype-using-a-microfluidic-chip
#3
Yizhi Zhang, Zhuyuan Wang, Lei Wu, Shenfei Zong, Binfeng Yun, Yiping Cui
Isolating and in situ profiling the heterogeneous molecular phenotype of circulating tumor cells are of great significance for clinical cancer diagnosis and personalized therapy. Herein, an on-chip strategy is proposed that combines size-based microfluidic cell isolation with multiple spectrally orthogonal surface-enhanced Raman spectroscopy (SERS) analysis for in situ profiling of cell membrane proteins and identification of cancer subpopulations. With the developed microfluidic chip, tumor cells are sieved from blood on the basis of size discrepancy...
April 17, 2018: Small
https://www.readbyqxmd.com/read/29664561/the-function-and-dysfunction-of-memory-cd8-t-cells-in-tumor-immunity
#4
REVIEW
James L Reading, Felipe Gálvez-Cancino, Charles Swanton, Alvaro Lladser, Karl S Peggs, Sergio A Quezada
The generation and maintenance of CD8+ T cell memory is crucial to long-term host survival, yet the basic tenets of CD8+ T cell immunity are still being established. Recent work has led to the discovery of tissue-resident memory cells and refined our understanding of the transcriptional and epigenetic basis of CD8+ T cell differentiation and dysregulation. In parallel, the unprecedented clinical success of immunotherapy has galvanized an intense, global research effort to decipher and de-repress the anti-tumor response...
May 2018: Immunological Reviews
https://www.readbyqxmd.com/read/29663383/nanoparticle-based-targeted-cancer-strategies-for-non-invasive-prostate-cancer-intervention
#5
REVIEW
Nicholas H Farina, Areg Zingiryan, Michael A Vrolijk, Scott D Perrapato, Steven Ades, Gary S Stein, Jane B Lian, Christopher C Landry
Prostate cancer is screened by testing circulating levels of the prostate-specific antigen (PSA) biomarker, monitoring changes over time, or a digital rectal exam. Abnormal results often lead to prostate biopsy. Prostate cancer positive patients are stratified into very low-risk, low-risk, intermediate-risk, and high-risk, based on clinical classification parameters, to assess therapy options. However, there remains a gap in our knowledge and a compelling need for improved risk stratification to inform clinical decisions and reduce both over-diagnosis and over-treatment...
April 16, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29662653/plasma-thymidine-kinase-1-activity-predicts-outcome-in-patients-with-hormone-receptor-positive-and-her2-negative-metastatic-breast-cancer-treated-with-endocrine-therapy
#6
Martina Bonechi, Francesca Galardi, Chiara Biagioni, Francesca De Luca, Mattias Bergqvist, Magnus Neumüller, Cristina Guarducci, Giulia Boccalini, Stefano Gabellini, Ilenia Migliaccio, Angelo Di Leo, Marta Pestrin, Luca Malorni
The aim of this study was to investigate if thymidine kinase-1 (TK1), a well-known proliferation marker, could represent a valid circulating biomarker to identify hormone receptor positive (HR+)/HER2 negative (HER2neg) metastatic breast cancer (MBC) patients most likely to benefit from endocrine therapy (ET). We used the DiviTum™ assay to analyze TK1 activity in cell lysates of three HR+/HER2neg BC cell lines and in plasma of 31 HR+/HER2neg MBC patients receiving ET. Blood samples were collected at treatment initiation, after one month and at disease progression...
March 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29661298/engineering-of-thermoresponsive-gels-as-a-fake-metastatic-niche
#7
Simona Giarra, Caterina Ierano, Marco Biondi, Maria Napolitano, Virginia Campani, Roberto Pacelli, Stefania Scala, Giuseppe De Rosa, Laura Mayol
Chemoattraction through the CXCR4-CXCL12 axis has been shown to be an important mechanism to direct circulating tumor cells toward distant sites. The objective of this work was to prepare a fake metastatic niche made up of a gel loaded with CXCL12. The gel is designed to create a steep concentration gradient of the chemokine in the proximity of the site of administration/injection, aimed to divert and capture circulating CXCR4+ tumor cells. To this aim, different thermoresponsive gels based on methylcellulose (MC) or poloxamers, loaded with CXCL12, with or without hyaluronic acid (HA) were designed and their mechanical properties correlated with the ability to attract and capture in vitro CXCR4+ cells...
July 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29660692/aggressive-phenotype-of-cells-disseminated-via-hematogenous-and-lymphatic-route-in-breast-cancer-patients
#8
Aleksandra Markiewicz, Anna Nagel, Jolanta Szade, Hanna Majewska, Jaroslaw Skokowski, Barbara Seroczynska, Tomasz Stokowy, Marzena Welnicka-Jaskiewicz, Anna J Zaczek
Intratumoral heterogeneity of breast cancer remains a major challenge in successful treatment. Failure of cancer therapies can also be accredited to inability to systemically eradicate cancer stem cells (CSCs). Recent evidence points to the role of epithelial-mesenchymal transition (EMT) in expanding the pool of tumor cells with CSCs features. Thus, we assessed expression level as well as heterogeneity of CSCs markers in primary tumors (PT), lymph node metastasis (LNM), and circulating tumor cells (CTCs)-enriched blood fractions in order to correlate them with signs of EMT activation as well as clinicopathological data of breast cancer patients...
April 13, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29660691/proteomic-analysis-of-liquid-biopsy-from-tumor-draining-vein-indicates-that-high-expression-of-exosomal-ecm1-is-associated-with-relapse-in-stage-i-iii-colon-cancer
#9
Sandra Santasusagna, Isabel Moreno, Alfons Navarro, Joan J Castellano, Francisco Martinez, Raquel Hernández, Carmen Muñoz, Mariano Monzo
BACKGROUND: The analysis of exosomes in blood obtained from the tumor-draining mesenteric vein (MV) can identify tumor biomarkers before they reach target organs and form the premetastatic niche where circulating tumor cells can anchor. Our group has recently shown that microRNAs in plasma from the MV-but not the peripheral vein (PV)-have been related to liver metastases in colon cancer (CC) patients. Here we examine the exosomal protein cargo in plasma from the MV and paired PV in 31 CC patients...
April 13, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29660346/wash-free-and-selective-imaging-of-epithelial-cell-adhesion-molecule-epcam-expressing-cells-with-fluorogenic-peptide-ligands
#10
K C Tara Bahadur, Kanako Suga, Takashi Isoshima, Toshiro Aigaki, Yoshihiro Ito, Kiyotaka Shiba, Takanori Uzawa
Detection of the cells expressing an epithelial cell adhesion molecule (EpCAM) is a crucial step to identify circulating tumor cells (CTCs) from blood. To detect the EpCAM, we here designed and synthesized a series of fluorogenic peptides. Specifically, we functionalized an EpCAM-binding peptide, Ep114, by replacing its amino acids to an aminophenylalanine that was modified with environmentally sensitive 7-nitro-2,1,3-benzoxadiazole (NBD-amPhe). Among six synthesized peptides, we have found that two peptides, Q4X and V6X (X represents NBD-amPhe), retain the Ep114's binding ability and specifically mark EpCAM-expressing cells by just adding these peptides to the cultivation medium...
April 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29660019/modeling-the-diffusion-of-d-2-hydroxyglutarate-from-idh1-mutant-gliomas-in-the-central-nervous-system
#11
Andreas Linninger, Grant A Hartung, Benjamin P Liu, Snezana Mirkov, Kevin Tangen, Rimas V Lukas, Dusten Unruh, C David James, Jann N Sarkaria, Craig Horbinski
Background: 20-30% of diffusely infiltrative gliomas in adults contain a point mutation in isocitrate dehydrogenase 1 (IDH1mut), which increases production of D-2-hydroxyglutarate (D2HG). This is so efficient that D2HG often reaches 30 mM within IDH1mut gliomas. Yet, while up to 100 µM D2HG can be detected in the circulating cerebrospinal fluid of IDH1mut glioma patients, the exposure of nonneoplastic cells within and surrounding an IDH1mut glioma to D2HG is unknown and difficult to measure directly...
April 5, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29659941/circulating-tumor-cells-in-patients-receiving-neoadjuvant-chemotherapy-refining-the-paradigm-of-prognosis-and-treatment-individualization
#12
Eleftherios P Mamounas
No abstract text is available yet for this article.
April 11, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29659933/circulating-tumor-cells-in-breast-cancer-patients-treated-by-neoadjuvant-chemotherapy-a-meta-analysis
#13
François-Clément Bidard, Stefan Michiels, Sabine Riethdorf, Volkmar Mueller, Laura J Esserman, Anthony Lucci, Bjørn Naume, Jun Horiguchi, Rafael Gisbert-Criado, Stefan Sleijfer, Masakazu Toi, Jose A Garcia-Saenz, Andreas Hartkopf, Daniele Generali, Françoise Rothé, Jeffrey Smerage, Laura Muinelo-Romay, Justin Stebbing, Patrice Viens, Mark Jesus M Magbanua, Carolyn S Hall, Olav Engebraaten, Daisuke Takata, José Vidal-Martínez, Wendy Onstenk, Noriyoshi Fujisawa, Eduardo Diaz-Rubio, Florin-Andrei Taran, Maria Rosa Cappelletti, Michail Ignatiadis, Charlotte Proudhon, Denise M Wolf, Jessica B Bauldry, Elin Borgen, Rin Nagaoka, Vicente Carañana, Jaco Kraan, Marisa Maestro, Sara Yvonne Brucker, Karsten Weber, Fabien Reyal, Dominic Amara, Mandar G Karhade, Randi R Mathiesen, Hideaki Tokiniwa, Antonio Llombart-Cussac, Alessandra Meddis, Paul Blanche, Koenraad d'Hollander, Klaus Pantel
Background: We conducted a meta-analysis in nonmetastatic breast cancer patients treated by neoadjuvant chemotherapy (NCT) to assess the clinical validity of circulating tumor cell (CTC) detection as a prognostic marker. Methods: We collected individual patient data from 21 studies in which CTC detection by CellSearch was performed in early breast cancer patients treated with NCT. The primary end point was overall survival, analyzed according to CTC detection, using Cox regression models stratified by study...
April 12, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29659051/psa-alpha-2-macroglobulin-complex-is-enzymatically-active-in-the-serum-of-patients-with-advanced-prostate-cancer-and-can-degrade-circulating-peptide-hormones
#14
Maya B Kostova, William Nathaniel Brennen, David Lopez, Lizamma Anthony, Hao Wang, Elizabeth Platz, Samuel R Denmeade
BACKGROUND: Prostate cancer cells produce high levels of the serine protease Prostate-Specific Antigen (PSA). PSA is enzymatically active in the tumor microenvironment but is presumed to be enzymatically inactive in the blood due to complex formation with serum protease inhibitors α-1-antichymotrypsin and α-2-macroglobulin (A2M). PSA-A2M complexes cannot be measured by standard ELISA assays and are also rapidly cleared from the circulation. Thus the exact magnitude of PSA production by prostate cancer cells is not easily measured...
April 16, 2018: Prostate
https://www.readbyqxmd.com/read/29658927/tumor-engraftment-in-a-xenograft-mouse-model-of-human-mantle-cell-lymphoma
#15
Archana Vijaya Kumar, Carmen Donate, Beat A Imhof, Thomas Matthes
B lymphocytes are key players in immune cell circulation and they mainly home to and reside in lymphoid organs. While normal B cells only proliferate when stimulated by T lymphocytes, oncogenic B cells survive and expand autonomously in undefined organ niches. Mantle cell lymphoma (MCL) is one such B cell disorder, where the median survival rate of patients is 4 - 5 years. This calls for the need of effective mechanisms by which the homing and engraftment of these cells are blocked in order to increase the survival and longevity of patients...
March 30, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29658563/preclinical-evaluation-of-a-novel-engineered-recombinant-human-anti-cd44v6-antibody-for-potential-use-in-radio-immunotherapy
#16
Anja C Mortensen, Diana Spiegelberg, Anna-Karin Haylock, Hans Lundqvist, Marika Nestor
CD44v6 is overexpressed in a variety of cancers, rendering it a promising target for radio-immunotherapy (RIT). In this study, we have characterized a novel engineered recombinant monoclonal anti-CD44v6 antibody, AbN44v6, and assessed its potential for use in RIT using either 177Lu or 131I as therapeutic radionuclides. In vitro affinity and specificity assays characterized the binding of the antibody labeled with 177Lu, 125I or 131I. The therapeutic effects of 177Lu-AbN44v6 and 131I-AbN44v6 were investigated using two in vitro 3D tumor models with different CD44v6 expression...
April 11, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29658027/acid-and-reduction-sensitive-micelles-for-improving-the-drug-delivery-efficacy-for-pancreatic-cancer-therapy
#17
Pu Wang, Jinxiu Wang, Haowen Tan, Shanfan Weng, Liying Cheng, Zhipeng Zhou, Shu Wen
One of the major challenges in anticancer therapy is the poor penetration of anticancer drugs into tumors, especially in solid tumors, resulting in decreased therapeutic efficacy in vivo. To solve some of these problems, in this study, a dual-responsive polymeric micellar system has been developed. This system exhibits an ultrasensitive response to the change of pH value from the extracellular environment to the intracellular environment, resulting in micellar swelling in cancer cells via the proton sponge effect...
April 16, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29656751/circulating-tumor-dna-testing-in-advanced-non-small-cell-lung-cancer
#18
REVIEW
Everett J Moding, Maximilian Diehn, Heather A Wakelee
Circulating tumor DNA (ctDNA) shed from cancer cells into the peripheral blood can be non-invasively collected and tested for the presence of tumor-specific mutations. Mutations identified in ctDNA can predict responses to targeted therapies and emerging evidence suggests that changes in ctDNA levels over time can be used to monitor response to therapy and detect disease recurrence. Given the emergence of targeted therapies in advanced non-small cell lung cancer (NSCLC), liquid biopsies utilizing ctDNA testing represent a powerful approach to genotype tumors and monitor for the development of resistance...
May 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29656492/pd-1-blockade-cellular-vesicles-for-cancer-immunotherapy
#19
Xudong Zhang, Chao Wang, Jinqiang Wang, Quanyin Hu, Benjamin Langworthy, Yanqi Ye, Wujin Sun, Jing Lin, Tianfu Wang, Jason Fine, Hao Cheng, Gianpietro Dotti, Peng Huang, Zhen Gu
Cancer cells resist to the host immune antitumor response via multiple suppressive mechanisms, including the overexpression of PD-L1 that exhausts antigen-specific CD8+ T cells through PD-1 receptors. Checkpoint blockade antibodies against PD-1 or PD-L1 have shown unprecedented clinical responses. However, limited host response rate underlines the need to develop alternative engineering approaches. Here, engineered cellular nanovesicles (NVs) presenting PD-1 receptors on their membranes, which enhance antitumor responses by disrupting the PD-1/PD-L1 immune inhibitory axis, are reported...
April 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29655782/lithocholic-acid-a-bacterial-metabolite-reduces-breast-cancer-cell-proliferation-and-aggressiveness
#20
Edit Mikó, András Vida, Tünde Kovács, Gyula Ujlaki, György Trencsényi, Judit Márton, Zsanett Sári, Patrik Kovács, Anita Boratkó, Zoltán Hujber, Tamás Csonka, Péter Antal-Szalmás, Mitsuhiro Watanabe, Imre Gombos, Balazs Csoka, Borbála Kiss, László Vígh, Judit Szabó, Gábor Méhes, Anna Sebestyén, James J Goedert, Péter Bai
Our study aimed at finding a mechanistic relationship between the gut microbiome and breast cancer. Breast cancer cells are not in direct contact with these microbes, but disease could be influenced by bacterial metabolites including secondary bile acids that are exclusively synthesized by the microbiome and known to enter the human circulation. In murine and bench experiments, a secondary bile acid, lithocholic acid (LCA), reduced cancer cell proliferation (by 10-20%) and VEGF production (by 37%), aggressiveness and metastatic potential of primary tumors through inducing mesenchymal-to-epithelial transition, increased antitumor immune response, OXPHOS and the TCA cycle...
April 12, 2018: Biochimica et Biophysica Acta
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