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Cancer blood biomarker

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https://www.readbyqxmd.com/read/28820329/sources-to-variability-in-circulating-human-mirna-signatures
#1
Andreas Keller, Trine Rounge, Christina Backes, Nicole Ludwig, Randi Gislefoss, Petra Leidinger, Hilde Langseth, Eckart Meese
An increasing number of studies propose circulating microRNAs (miRNAs) as biomarkers for a large number of human diseases including cancer, cardiovascular diseases, neurological pathologies and others. To further validate miRNA as biomarkers it is indispensable to understand the variability of circulating miRNAs in healthy individuals. We determined the longitudinal miRNomes of 90 serum samples from the Janus Serum Bank in Norway, which have been stored between 23 and 40 years at -25 degrees Celsius. We profiled three serum samples with microarrays for 30 individuals, each...
August 18, 2017: RNA Biology
https://www.readbyqxmd.com/read/28819859/utilizing-matrigel-transwell-invasion-assay-to-detect-and-enumerate-circulating-tumor-cells
#2
Xingtong Liu, Xiangwei Wu
Metastasis is the cause of 90% of human cancer deaths. Circulating tumor cells (CTCs) in the peripheral blood and/or lymphatic vessels are cells shed from primary tumors and considered to be precursors of metastasis. Study of CTCs allows the serial monitoring of tumor progression and may provide predictive and prognostic biomarkers in clinic. Current CTC isolation and detection technologies encounter several challenges, including: heterogeneity of CTCs, low cell viability and/or high rate of contamination post-isolation, and the inability to distinguish viable/invasive from nonviable/nonfunctional CTCs, all of which can limit in vitro and in vivo characterization of CTCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819845/automated-microfluidic-filtration-and-immunocytochemistry-detection-system-for-capture-and-enumeration-of-circulating-tumor-cells-and-other-rare-cell-populations-in-blood
#3
Michael Pugia, Mark Jesus M Magbanua, John W Park
Isolation by size using a filter membrane offers an antigen-independent method for capturing rare cells present in blood of cancer patients. Multiple cell types, including circulating tumor cells (CTCs), captured on the filter membrane can be simultaneously identified via immunocytochemistry (ICC) analysis of specific cellular biomarkers. Here, we describe an automated microfluidic filtration method combined with a liquid handling system for sequential ICC assays to detect and enumerate non-hematologic rare cells in blood...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819837/microfluidic-capture-and-multiplex-immunofluorescence-of-circulating-tumor-cells-to-identify-cancer-of-origin
#4
Chian-Hui Lai, Ying-Chih Chang
Circulating tumor cells (CTCs) are an important biomarker and their analysis can be considered a form of "liquid biopsy." The purpose of this book chapter is to describe the use of the 4-channel CMx (cells captured in maximum) microfluidic chip, containing special micropatterns coated with an antibody-conjugated supported lipid bilayer (SLB) on its surface, to capture and isolate CTCs from the blood of cancer patients. Captured CTCs are subsequently released by an air foam to an immunofluorescence (IF) staining panel that enables further analysis, including the identification of the primary cancer source of the CTCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819773/tlr9-gene-polymorphism-1486t-c-rs187084-is-associated-with-uterine-cervical-neoplasm-in-mexican-female-population
#5
Cecilia Martínez-Campos, Margarita Bahena-Román, Kirvis Torres-Poveda, Ana I Burguete-García, Vicente Madrid-Marina
PURPOSE: The aim of this work was to evaluate the association of single nucleotide polymorphisms in TLR9 (-1486 T/C [rs187084], -1237T/C [rs5743836] and G2848A [rs352140]) with HPV infection, squamous intraepithelial lesions, and uterine cervical neoplasm in a Mexican population. Additionally, the peripheral expression of TLR9 was evaluated to evaluate the differences in the TLR9 expression associated with every genotype in the locus -1486 of the TLR9 gene. The serum concentration of TLR9 was evaluated in a randomly selected subsample...
August 17, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28815924/urinary-micrornas-for-prostate-cancer-diagnosis-prognosis-and-treatment-response-are-we-there-yet
#6
REVIEW
Ovidiu Balacescu, Bogdan Petrut, Oana Tudoran, Dragos Feflea, Loredana Balacescu, Andrei Anghel, Ioan O Sirbu, Edward Seclaman, Catalin Marian
Prostate cancer (PCa) remains one of the leading causes of cancer-related deaths in men. Despite the tremendous progress in research over the years, a suitable minimally invasive PCa biomarker is yet to be discovered. The recent advances regarding the roles of microRNAs as biomarkers has allowed for their study in PCa as well, especially as blood-based markers. However, there are several studies that used urine as biological sample to evaluate microRNAs as biomarkers for PCa diagnosis, prognosis, and treatment response, which were reviewed herein...
August 16, 2017: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/28815047/whole-blood-rna-transcript-based-models-can-predict-clinical-response-in-two-large-independent-clinical-studies-of-patients-with-advanced-melanoma-treated-with-the-checkpoint-inhibitor-tremelimumab
#7
Philip Friedlander, Karl Wassmann, Alan M Christenfeld, David Fisher, Chrisann Kyi, John M Kirkwood, Nina Bhardwaj, William K Oh
BACKGROUND: Tremelimumab is an antibody that blocks CTLA-4 and demonstrates clinical efficacy in a subset of advanced melanoma patients. An unmet clinical need exists for blood-based response-predictive gene signatures to facilitate clinically effective and cost-efficient use of such immunotherapeutic interventions. METHODS: Peripheral blood samples were collected in PAXgene® tubes from 210 treatment-naïve melanoma patients receiving tremelimumab in a worldwide, multicenter phase III study (discovery dataset)...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28814275/randomized-study-comparing-full-dose-monotherapy-s-1-followed-by-irinotecan-and-reduced-dose-combination-therapy-s-1-oxaliplatin-followed-by-s-1-irinotecan-as-initial-therapy-for-older-patients-with-metastatic-colorectal-cancer-nordic-9
#8
Stine Braendegaard Winther, Pia Österlund, Åke Berglund, Bengt Glimelius, Camilla Qvortrup, Halfdan Sorbye, Per Pfeiffer
BACKGROUND: Metastatic colorectal cancer (mCRC) is a disease of older age, but there is a relative lack of knowledge about effects of chemotherapy in older patients as they are under-represented in clinical trials. Little data can guide whether the strategy in older mCRC patients should be a sequential full-dose monotherapy chemotherapy approach or a dose-reduced combination chemotherapy approach. The oral 5FU prodrug S-1 seems to have less side effects than capecitabine and should be an optimal drug for older patients, but few data are available...
August 16, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28810146/swarm-intelligence-enhanced-detection-of-non-small-cell-lung-cancer-using-tumor-educated-platelets
#9
Myron G Best, Nik Sol, Sjors G J G In 't Veld, Adrienne Vancura, Mirte Muller, Anna-Larissa N Niemeijer, Aniko V Fejes, Lee-Ann Tjon Kon Fat, Anna E Huis In 't Veld, Cyra Leurs, Tessa Y Le Large, Laura L Meijer, Irsan E Kooi, François Rustenburg, Pepijn Schellen, Heleen Verschueren, Edward Post, Laurine E Wedekind, Jillian Bracht, Michelle Esenkbrink, Leon Wils, Francesca Favaro, Jilian D Schoonhoven, Jihane Tannous, Hanne Meijers-Heijboer, Geert Kazemier, Elisa Giovannetti, Jaap C Reijneveld, Sander Idema, Joep Killestein, Michal Heger, Saskia C de Jager, Rolf T Urbanus, Imo E Hoefer, Gerard Pasterkamp, Christine Mannhalter, Jose Gomez-Arroyo, Harm-Jan Bogaard, David P Noske, W Peter Vandertop, Daan van den Broek, Bauke Ylstra, R Jonas A Nilsson, Pieter Wesseling, Niki Karachaliou, Rafael Rosell, Elizabeth Lee-Lewandrowski, Kent B Lewandrowski, Bakhos A Tannous, Adrianus J de Langen, Egbert F Smit, Michel M van den Heuvel, Thomas Wurdinger
Blood-based liquid biopsies, including tumor-educated blood platelets (TEPs), have emerged as promising biomarker sources for non-invasive detection of cancer. Here we demonstrate that particle-swarm optimization (PSO)-enhanced algorithms enable efficient selection of RNA biomarker panels from platelet RNA-sequencing libraries (n = 779). This resulted in accurate TEP-based detection of early- and late-stage non-small-cell lung cancer (n = 518 late-stage validation cohort, accuracy, 88%; AUC, 0.94; 95% CI, 0...
August 14, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28809987/label-free-ferrohydrodynamic-cell-separation-of-circulating-tumor-cells
#10
Wujun Zhao, Rui Cheng, Brittany D Jenkins, Taotao Zhu, Nneoma E Okonkwo, Courtney E Jones, Melissa B Davis, Sravan K Kavuri, Zhonglin Hao, Carsten Schroeder, Leidong Mao
Circulating tumor cells (CTCs) have significant implications in both basic cancer research and clinical applications. To address the limited availability of viable CTCs for fundamental and clinical investigations, effective separation of extremely rare CTCs from blood is critical. Ferrohydrodynamic cell separation (FCS), a label-free method that conducted cell sorting based on cell size difference in biocompatible ferrofluids, has thus far not been able to enrich low-concentration CTCs from cancer patients' blood because of technical challenges associated with processing clinical samples...
August 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28809985/a-magnetic-micropore-chip-for-rapid-1-hour-unbiased-circulating-tumor-cell-isolation-and-in-situ-rna-analysis
#11
Jina Ko, Neha Bhagwat, Stephanie S Yee, Taylor Black, Colleen Redlinger, Janae Romeo, Mark O'Hara, Arjun Raj, Erica L Carpenter, Ben Z Stanger, David Issadore
The use of microtechnology for the highly selective isolation and sensitive detection of circulating tumor cells has shown enormous promise. One challenge for this technology is that the small feature sizes - which are the key to this technology's performance - can result in low sample throughput and susceptibility to clogging. Additionally, conventional molecular analysis of CTCs often requires cells to be taken off-chip for sample preparation and purification before analysis, leading to the loss of rare cells...
August 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28808872/analysis-of-blood-markers-for-early-breast-cancer-diagnosis
#12
J Bayo, M A Castaño, F Rivera, F Navarro
PURPOSE: Breast cancer is the most common neoplasm in women and has the highest associated mortality rate. Rapid detection programmes can provide early diagnosis and increase the chances of survival. There are no specific tumor biomarkers for the early phase of the disease. The primary aim of this study was to search a blood biomarker with levels that exceeded the normal range established in the general population that could be used to screen breast cancer. METHODS/PATIENTS: Case-control study...
August 14, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28808290/molecular-mr-imaging-of-fibrosis-in-a-mouse-model-of-pancreatic-cancer
#13
Miloslav Polasek, Yan Yang, Daniel T Schühle, Mohammad A Yaseen, Young R Kim, Yu Sub Sung, Alexander R Guimaraes, Peter Caravan
Fibrosis with excessive amounts of type I collagen is a hallmark of many solid tumours, and fibrosis is a promising target in cancer therapy, but tools for its non-invasive quantification are missing. Here we used magnetic resonance imaging with a gadolinium-based probe targeted to type I collagen (EP-3533) to image and quantify fibrosis in pancreatic ductal adenocarcinoma. An orthotopic syngeneic mouse model resulted in tumours with 2.3-fold higher collagen level compared to healthy pancreas. Animals were scanned at 4...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807052/whole-blood-rna-transcript-based-models-can-predict-clinical-response-in-two-large-independent-clinical-studies-of-patients-with-advanced-melanoma-treated-with-the-checkpoint-inhibitor-tremelimumab
#14
Philip Friedlander, Karl Wassmann, Alan M Christenfeld, David Fisher, Chrisann Kyi, John M Kirkwood, Nina Bhardwaj, William K Oh
BACKGROUND: Tremelimumab is an antibody that blocks CTLA-4 and demonstrates clinical efficacy in a subset of advanced melanoma patients. An unmet clinical need exists for blood-based response-predictive gene signatures to facilitate clinically effective and cost-efficient use of such immunotherapeutic interventions. METHODS: Peripheral blood samples were collected in PAXgene® tubes from 210 treatment-naïve melanoma patients receiving tremelimumab in a worldwide, multicenter phase III study (discovery dataset)...
August 15, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28804596/characterisation-of-tumour-derived-microvesicles-in-cancer-patients-blood-and-correlation-with-clinical-outcome
#15
Kerstin Menck, Annalen Bleckmann, Astrid Wachter, Bianca Hennies, Lena Ries, Matthias Schulz, Marko Balkenhol, Tobias Pukrop, Bawarjan Schatlo, Ulrike Rost, Dirk Wenzel, Florian Klemm, Claudia Binder
To evaluate whether tumour-derived microvesicles (T-MV), originating from the plasma membrane, represent suitable cancer biomarkers, we isolated MV from peripheral blood samples of cancer patients with locally advanced and/or metastatic solid tumours (n = 330, including 79 head & neck cancers, 74 lung cancers, 41 breast cancers, 28 colorectal cancers and 108 with other cancer forms) and controls (n = 103). Whole MV preparations were characterised using flow cytometry. While MV carrying the tumour-associated proteins MUC1, EGFR and EpCAM were found to be enhanced in a tumour-subtype-specific way in patients' blood, expression of the matrix metalloproteinase inducer EMMPRIN was increased independent of tumour type...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28804579/validity-of-prostate-health-index-and-percentage-of-2-pro-prostate-specific-antigen-as-novel-biomarkers-in-the-diagnosis-of-prostate-cancer-omani-tertiary-hospitals-experience
#16
Safana S Al Saidi, Nafila B Al Riyami, Mohammed S Al Marhoon, Mohammed S Al Saraf, Salim S Al Busaidi, Riad Bayoumi, Waad-Allah S Mula-Abed
OBJECTIVES: Prostate cancer is the leading cancer in older men. The Ministry of Health Oman Cancer Incidence Registry 2013 lists cancer of the prostate as the first most common cancer in males. Therefore, early detection is important and prostate-specific antigen (PSA) is widely used as an established laboratory test. However, despite its wide use, its value in screening, particularly in asymptomatic males, is controversial when considering the risks and benefits of early detection. METHODS: This prospective, observational study included 136 males (67...
July 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28804274/non-invasive-urinary-metabolomic-profiling-discriminates-prostate-cancer-from-benign-prostatic-hyperplasia
#17
Clara Pérez-Rambla, Leonor Puchades-Carrasco, María García-Flores, José Rubio-Briones, José Antonio López-Guerrero, Antonio Pineda-Lucena
INTRODUCTION: Prostate cancer (PCa) is one of the most common malignancies in men worldwide. Serum prostate specific antigen (PSA) level has been extensively used as a biomarker to detect PCa. However, PSA is not cancer-specific and various non-malignant conditions, including benign prostatic hyperplasia (BPH), can cause a rise in PSA blood levels, thus leading to many false positive results. OBJECTIVES: In this study, we evaluated the potential of urinary metabolomic profiling for discriminating PCa from BPH...
2017: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28803255/panel-of-serum-metabolites-discriminates-cancer-patients-and-healthy-participants-of-lung-cancer-screening-a-pilot-study
#18
Małgorzata Roś-Mazurczyk, Anna Wojakowska, Łukasz Marczak, Krzysztof Polański, Monika Pietrowska, Joanna Polanska, Rafał Dziadziuszko, Jacek Jassem, Witold Rzyman, Piotr Widlak
INTRODUCTION: Blood biomarkers may support early diagnosis of lung cancer by enabling pre-selection of candidates for computed tomography screening or discrimination between benign and malignant screening-detected nodules. We aimed to identify features of serum metabolome distinguishing individuals with early-detected lung cancer from healthy participants of the lung cancer screening program. METHODS: Blood samples were collected in the course of a low-dose computed tomography screening program performed in the Gdansk district (Northern Poland)...
August 12, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28801876/tumor-dna-an-emerging-biomarker-in-head-and-neck-cancer
#19
Joseph A Bellairs, Rifat Hasina, Nishant Agrawal
Head and neck cancer (HNC) includes a diverse range of malignancies arising commonly from mucosal epithelia of the upper aerodigestive tract. Head and neck squamous cell carcinoma (HNSCC), the most common form of HNC, develops in the oral cavity, pharynx, and larynx and is associated with tobacco exposure, alcohol abuse, and infection with oncogenic viruses. Despite global advances in cancer care, HNSCC often presents with advanced disease and is associated with poor 5-year survival of ~50%. Genotyping tumor tissue to guide clinical decision-making is becoming commonplace in modern oncology, but in the management of HNSCC, tissue biopsies with cytopathology or histopathology remain the mainstay for diagnosis...
August 12, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28800316/prognostic-significance-of-low-mir-144-expression-in-gastric-cancer
#20
Suoning Liu, Jian Suo, Chunxi Wang, Xuan Sun, Daguang Wang, Liang He, Yang Zhang, Wei Li
BACKGROUND: An overwhelming amount of evidence has emerged suggesting that dysregulated microRNAs (miRNAs) play crucial roles in tumorigenesis. OBJECTIVE: The study was to analyze tissue/serum miR-144 expression in gastric cancer and then evaluate their potential to predict the prognosis of gastric cancer. METHODS: We examined miR-144 levels in tissues and peripheral blood samples from 96 gastric cancer patients using real-time PCR. Then the association between tissue/serum miR-144 levels and clinicopathological parameters was determined...
July 2, 2017: Cancer Biomarkers: Section A of Disease Markers
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