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Circulating tumour cell

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https://www.readbyqxmd.com/read/29343314/cell-free-dna-the-role-in-pathophysiology-and-as-a-biomarker-in-kidney-diseases
#1
Peter Celec, Barbora Vlková, Lucia Lauková, Janka Bábíčková, Peter Boor
Cell-free DNA (cfDNA) is present in various body fluids and originates mostly from blood cells. In specific conditions, circulating cfDNA might be derived from tumours, donor organs after transplantation or from the foetus during pregnancy. The analysis of cfDNA is mainly used for genetic analyses of the source tissue -tumour, foetus or for the early detection of graft rejection. It might serve also as a nonspecific biomarker of tissue damage in critical care medicine. In kidney diseases, cfDNA increases during haemodialysis and indicates cell damage...
January 18, 2018: Expert Reviews in Molecular Medicine
https://www.readbyqxmd.com/read/29341153/circulating-tumour-cells-and-dna-as-liquid-biopsies-in-gastrointestinal-cancer
#2
REVIEW
O Nordgård, K Tjensvoll, B Gilje, K Søreide
BACKGROUND: Blood is the most extensively studied body fluid and, because it contains circulating tumour cells (CTCs) and circulating tumour-derived cell-free DNA (ctDNA), it may represent a liquid biopsy for cancer. Methods for enrichment and detection of CTCs and ctDNA, their clinical applications and future opportunities in gastrointestinal cancers were the focus of this review. METHODS: The PubMed database was searched for literature up to 24 June 2017, with a focus on the past 10 years...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29338768/binary-blend-fibber-based-capture-assay-of-circulating-tumor-cells-for-clinical-diagnosis-of-colorectal-cancer
#3
Ai-Wei Lee, Fu-Xiang Lin, Po-Li Wei, Guo Jian-Wei, Jem-Kun Chen
BACKGROUND: In addition to conventional approaches, detecting and characterizing CTCs in patient blood allows for early diagnosis of cancer metastasis. METHODS: We blended poly(ethylene oxide) (PEO) into nylon-6 through electrospinning to generate a fibrous matbased circulating tumour cells (CTCs) assay. The contents of nylon-6 and PEO in the electrospun blend fibrous mats (EBFMs) were optimized to facilitate high cell-substrate affinity and low leukocyte adsorption...
January 16, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29335441/a-collective-route-to-head-and-neck-cancer-metastasis
#4
Arutha Kulasinghe, Henri Schmidt, Chris Perry, Bernard Whitfield, Liz Kenny, Colleen Nelson, Majid E Warkiani, Chamindie Punyadeera
Distant metastasis (DM) from head and neck cancers (HNC) portends a poor patient prognosis. Despite its important biological role, little is known about the cells which seed these DM. Circulating tumour cells (CTCs) represent a transient cancer cell population, which circulate in HNC patients' peripheral blood and seed at distant sites. Capture and analysis of CTCs offers insights into tumour metastasis and can facilitate treatment strategies. Whilst the data on singular CTCs have shown clinical significance, the role of CTC clusters in metastasis remains limited...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311580/lsd1-activation-promotes-inducible-emt-programs-and-modulates-the-tumour-microenvironment-in-breast-cancer
#5
T Boulding, R D McCuaig, A Tan, K Hardy, F Wu, J Dunn, M Kalimutho, C R Sutton, J K Forwood, A G Bert, G J Goodall, L Malik, D Yip, J E Dahlstrom, A Zafar, K K Khanna, S Rao
Complex regulatory networks control epithelial-to-mesenchymal transition (EMT) but the underlying epigenetic control is poorly understood. Lysine-specific demethylase 1 (LSD1) is a key histone demethylase that alters the epigenetic landscape. Here we explored the role of LSD1 in global epigenetic regulation of EMT, cancer stem cells (CSCs), the tumour microenvironment, and therapeutic resistance in breast cancer. LSD1 induced pan-genomic gene expression in networks implicated in EMT and selectively elicits gene expression programs in CSCs whilst repressing non-CSC programs...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29288509/cancer-immunotherapy-a-need-for-peripheral-immunodynamic-monitoring
#6
REVIEW
Wenjun Wang, Xiaojun Xia, Sipei Wu, Minzhang Guo, Puyi Lie, Jianxing He
Immunotherapy has become an important approach for treating different tumours which has shown significant efficacy in numerous clinical trials, especially those using new checkpoint inhibitors and adoptive cell therapy, which have rapidly become widespread after being approved. However, analysis of peripheral immune biomarkers before and after immunotherapy and their relationship to clinical responses and disease prognosis have rarely been performed in clinical trials. In this review, we examine dynamic changes in the immune system before and after therapy by analyzing recent clinical trials of immunotherapy in patients with cancer that focused on checkpoint inhibitors and adoptive cell therapy...
December 30, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29286634/high-throughput-screening-raman-spectroscopy-hts-rs-platform-for-label-free-cellomics
#7
Iwan W Schie, Jan Rüger, Abdullah Saif Mondol, Anuradha Ramoji, Ute Neugebauer, Christoph Krafft, Juergen Popp
We present a high-throughput screening Raman spectroscopy (HTS-RS) platform for a rapid and label-free macromolecular fingerprinting of tens of thousands eukaryotic cells. The newly proposed label-free HTS-RS platform combines automated imaging microscopy with Raman spectroscopy to enable a rapid label-free screening of cells and can be applied to a large number of biomedical and clinical applications. The potential of the new approach is illustrated by two applications: 1. HTS-RS-based differential white blood cell count...
December 29, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29282271/circulating-tumour-cells-as-a-potential-screening-tool-for-lung-cancer-the-air-study-protocol-of-a-prospective-multicentre-cohort-study-in-france
#8
Sylvie Leroy, Jonathan Benzaquen, Andrea Mazzetta, Sylvain Marchand-Adam, Bernard Padovani, Dominique Israel-Biet, Christophe Pison, Pascal Chanez, Jacques Cadranel, Julien Mazières, Vincent Jounieaux, Charlotte Cohen, Véronique Hofman, Marius Ilie, Paul Hofman, Charles Hugo Marquette
INTRODUCTION: Lung cancer (LC) is the leading cause of death from cancer. Early diagnosis of LC is of paramount importance in terms of prognosis. The health authorities of most countries do not accept screening programmes based on low-dose chest CT (LDCT), especially in Europe, because they are flawed by a high rate of false-positive results, leading to a large number of invasive diagnostic procedures. These authorities advocated further research, including companion biological tests that could enhance the effectiveness of LC screening...
December 26, 2017: BMJ Open
https://www.readbyqxmd.com/read/29277856/a-phase-iia-study-of-ha-irinotecan-formulation-of-hyaluronic-acid-and-irinotecan-targeting-cd44-in-extensive-stage-small-cell-lung-cancer
#9
Muhammad Alamgeer, D Neil Watkins, Ilia Banakh, Beena Kumar, Daniel J Gough, Ben Markman, Vinod Ganju
Preclinical studies in small cell lung cancer (SCLC) have shown that hyaluronic acid (HA) can be effectively used to deliver chemotherapy and selectively decrease CD44 expressing (stem cell-like) tumour cells. The current study aimed to replicate these findings and obtain data on safety and activity of HA-irinotecan (HA-IR). Eligible patients with extensive stage SCLC were consented. A safety cohort (n = 5) was treated with HA-IR and Carboplatin (C). Subsequently, the patients were randomised 1:1 to receive experimental (HA-IR + C) or standard (IR + C) treatment, to a maximum of 6 cycles...
December 26, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/29260185/electrochemical-biosensor-for-cancer-cell-detection-based-on-a-surface-3d-micro-array
#10
Li An, Guangtong Wang, Yu Han, Tianchan Li, Peng Jin, Shaoqin Liu
The detection of rare circulating tumour cells (CTCs) in patients' blood is crucial for the early diagnosis of cancer, highly precise cancer therapy and monitoring therapeutic outcomes in real time. In this study we have developed an efficient strategy to capture and detect CTCs from the blood of cancer patients using a benzoboric acid modified gold-plated polymeric substrate with a regular 3D surface array. Compared with the smooth substrate, the substrate with the surface 3D microarrays exhibited a higher capture efficiency, i...
December 20, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29247383/adjusted-indirect-comparison-using-propensity-score-matching-of-osimertinib-to-platinum-based-doublet-chemotherapy-in-patients-with-egfrm-t790m-nsclc-who-have-progressed-after-egfr-tki
#11
Helen Mann, Frank Andersohn, Carolyn Bodnar, Tetsuya Mitsudomi, Tony S K Mok, James Chih-Hsin Yang, Christopher Hoyle
BACKGROUND AND OBJECTIVE: An adjusted indirect comparison was conducted to assess efficacy outcomes, particularly overall survival (OS), of osimertinib versus platinum-based doublet chemotherapy in patients with epidermal growth factor receptor-mutated (EGFRm) T790M mutation-positive non-small-cell lung cancer (NSCLC) who had progressed following an EGFR tyrosine kinase inhibitor (TKI). Analysis of treatment effect from two separate trials had the potential to more accurately estimate the magnitude of OS benefit due to absence of confounding due to treatment switching from the control arm to the osimertinib arm of the ongoing randomized control trial, AURA3...
December 15, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/29246026/circulating-biomarkers-in-osteosarcoma-new-translational-tools-for-diagnosis-and-treatment
#12
REVIEW
Lavinia Raimondi, Angela De Luca, Viviana Costa, Nicola Amodio, Valeria Carina, Daniele Bellavia, Pierfrancesco Tassone, Stefania Pagani, Milena Fini, Riccardo Alessandro, Gianluca Giavaresi
Osteosarcoma (OS) is a rare primary malignant bone tumour arising from primitive bone-forming mesenchymal cells, with high incidence in children and young adults, accounting for approximately 60% of all malignant bone tumours. Currently, long-term disease-free survival can be achieved by surgical treatment plus chemotherapy in approximately 60% of patients with localized extremity disease, and in 20-30% of patients with metastatic lung or bone disease. Diagnosis of primary lesions and recurrences is achieved by using radiological investigations and standard tissue biopsy, the latter being costly, painful and hardly repeatable for patients...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29239110/association-of-prognostic-features-and-treatment-on-survival-time-of-dogs-with-systemic-mastocytosis-a-retrospective-analysis-of-40-dogs
#13
S J Moirano, S F Lima, K R Hume, E M Brodsky
Systemic mastocytosis is a rare phenomenon, with limited information regarding prognostic features and effective treatment of canine patients with this disease. The objective of this study is to determine the impact of certain features and treatments on dogs with systemic mastocytosis. The medical records of 40 dogs from 4 northeastern US veterinary hospitals, with evidence of systemic mast cell disease, were evaluated retrospectively. Variables analysed with relation to overall survival and prognostic significance included treatment protocol used, substage, presence of a cutaneous or visceral tumour, presence of multiple cutaneous Mast cell tumours, grade of the primary tumour and metastatic site(s)...
December 14, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29225811/regular-exercise-during-haemodialysis-promotes-an-anti-inflammatory-leucocyte-profile
#14
Maurice Dungey, Hannah M L Young, Darren R Churchward, James O Burton, Alice C Smith, Nicolette C Bishop
Background: Cardiovascular disease is the most common cause of mortality in haemodialysis (HD) patients and is highly predicted by markers of chronic inflammation. Regular exercise may have beneficial anti-inflammatory effects, but this is unclear in HD patients. This study assessed the effect of regular intradialytic exercise on soluble inflammatory factors and inflammatory leucocyte phenotypes. Methods: Twenty-two HD patients from a centre where intradialytic cycling was offered thrice weekly and 16 HD patients receiving usual care volunteered...
December 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29224824/circulating-tumour-cell-pd-l1-test-for-head-and-neck-cancers
#15
Arutha Kulasinghe, Liz Kenny, Chamindie Punyadeera
Immune checkpoint inhibitors have gained traction over the last few years in the treatment of metastatic/recurrent head and neck squamous cell carcinoma (HNSCC) patients. Monoclonal antibodies that block the programmed death 1 (PD-1) receptor and its major ligand, PD-L1, have shown durable responses and low toxicity profiles. There are currently no validated predictive biomarkers to select patients likely to respond to anti-PD-1/PD-L1 therapy to avoid unwanted side effects and to reduce healthcare expenditure...
December 2017: Oral Oncology
https://www.readbyqxmd.com/read/29218105/systemic-inflammation-is-associated-with-myocardial-fibrosis-diastolic-dysfunction-and-cardiac-hypertrophy-in-patients-with-hypertrophic-cardiomyopathy
#16
Lu Fang, Andris H Ellims, Anna L Beale, Andrew J Taylor, Andrew Murphy, Anthony M Dart
BACKGROUND: Regional or diffuse fibrosis is an early feature of hypertrophic cardiomyopathy (HCM) and is related to poor prognosis. Previous studies have documented low-grade inflammation in HCM. The aim of this study was to examine the relationships between circulating inflammatory markers and myocardial fibrosis, systolic and diastolic dysfunction, and the degree of cardiac hypertrophy in HCM patients. METHODS AND RESULTS: Fifty HCM patients were recruited while 20 healthy subjects served as the control group...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29211713/runx3-programs-cd8-t-cell-residency-in-non-lymphoid-tissues-and-tumours
#17
J Justin Milner, Clara Toma, Bingfei Yu, Kai Zhang, Kyla Omilusik, Anthony T Phan, Dapeng Wang, Adam J Getzler, Toan Nguyen, Shane Crotty, Wei Wang, Matthew E Pipkin, Ananda W Goldrath
Tissue-resident memory CD8+ T (TRM) cells are found at common sites of pathogen exposure, where they elicit rapid and robust protective immune responses. However, the molecular signals that control TRM cell differentiation and homeostasis are not fully understood. Here we show that mouse TRM precursor cells represent a unique CD8+ T cell subset that is distinct from the precursors of circulating memory cell populations at the levels of gene expression and chromatin accessibility. Using computational and pooled in vivo RNA interference screens, we identify the transcription factor Runx3 as a key regulator of TRM cell differentiation and homeostasis...
December 6, 2017: Nature
https://www.readbyqxmd.com/read/29197269/anti-tumour-necrosis-factor-%C3%AE-antibodies-and-b-cell-homeostasis-in-human-inflammatory-bowel-diseases
#18
Caterina Defendenti, Fabiola Atzeni, Sergio Malandrin, Sandro Ardizzone, Piero Luigi Almasio, Simone Saibeni, Cristina Bezzio, Simona Bollani, Raffaele Salerno, Paolo Declich, Zoe Sarno, Savino Bruno, Rossella Talotta, Piercarlo Sarzi-Puttini
BACKGROUND: The expression of CD70 on T cells is greatly enhanced by antigen-presenting cell (APC)-associated signals, such as tumour necrosis factor(TNF)-α, which is constitutionally high in patients with inflammatory bowel disease (IBD). Experimentally, the chronic activation of CD27 as a result of the constitutive expression of CD70 leads to the demise of B cells in bone marrow (BM) and the secondary lymphoid organs. The aim of this study was to assess the number and phenotype of circulating B cell in untreated IBD patients and their counterparts treated with biological anti-TNF drugs...
January 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29196748/cell-free-dna-kinetics-in-a-pre-clinical-model-of-head-and-neck-cancer
#19
Nidal Muhanna, Marco A Di Grappa, Harley H L Chan, Tahsin Khan, Cheng S Jin, Yangqiao Zheng, Jonathan C Irish, Scott V Bratman
In cancer patients, circulating tumour-derived DNA (ctDNA) levels imperfectly reflect disease burden apparent on medical imaging. Further evaluation of ctDNA levels over time is needed to better understand the correlation with tumour growth and therapeutic response. We describe ctDNA kinetics within an orthotopic, immunocompetent preclinical rabbit model of local-regionally advanced head and neck squamous cell carcinoma (HNSCC). Monitoring primary tumour and metastatic lymph node volume by computed tomography (CT), we observed a correlation between ctDNA levels and tumour burden...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29196437/targeting-both-tumour-associated-cxcr2-neutrophils-and-ccr2-macrophages-disrupts-myeloid-recruitment-and-improves-chemotherapeutic-responses-in-pancreatic-ductal-adenocarcinoma
#20
Timothy M Nywening, Brian A Belt, Darren R Cullinan, Roheena Z Panni, Booyeon J Han, Dominic E Sanford, Ryan C Jacobs, Jian Ye, Ankit A Patel, William E Gillanders, Ryan C Fields, David G DeNardo, William G Hawkins, Peter Goedegebuure, David C Linehan
OBJECTIVE: Chemokine pathways are co-opted by pancreatic adenocarcinoma (PDAC) to facilitate myeloid cell recruitment from the bone marrow to establish an immunosuppressive tumour microenvironment (TME). Targeting tumour-associated CXCR2+neutrophils (TAN) or tumour-associated CCR2+ macrophages (TAM) alone improves antitumour immunity in preclinical models. However, a compensatory influx of an alternative myeloid subset may result in a persistent immunosuppressive TME and promote therapeutic resistance...
December 1, 2017: Gut
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