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https://www.readbyqxmd.com/read/28813035/bladder-cancer-the-promise-of-liquid-biopsy-ctdna-analysis
#1
Clemens Thoma
No abstract text is available yet for this article.
August 16, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28812303/circulating-tumor-dna-as-a-liquid-biopsy-current-clinical-applications-and-future-directions
#2
REVIEW
Kimberly M Komatsubara, Adrian G Sacher
Tumor genomic sequencing has become part of routine oncology practice in many tumor types, in order to identify potentially targetable mutations and to personalize cancer care. Plasma genotyping via circulating tumor DNA analysis is a noninvasive and rapid alternative method of detecting and monitoring genomic alterations throughout the course of disease. Multiple assays have been developed to date, each with different test characteristics and degrees of clinical validation. Here we review the clinical data supporting these different plasma genotyping methodologies, and present a practical approach to the interpretation of the results of these tests...
August 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28810735/accurate-electrochemistry-analysis-of-circulating-methylated-dna-from-clinical-plasma-based-on-paired-end-tagging-and-amplifications
#3
Feng Chen, Xuyao Wang, Xiaowen Cao, Yongxi Zhao
Circulating methylated DNA has been a new kind of cancer biomarker, yet its small fraction of trace total DNA from clinical samples impairs the accurate analysis. Though fluorescence methods based on quantitative methylation specific PCR (qMSP) have been adopted routinely, yet alternative electrochemistry assay of such DNA from clinical samples remains a great challenge. Herein, we report accurate electrochemistry analysis of circulating methylated DNA from clinical plasma samples based on a paired-end tagging and amplifications strategy...
August 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28810146/swarm-intelligence-enhanced-detection-of-non-small-cell-lung-cancer-using-tumor-educated-platelets
#4
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/28809398/precision-medicine-for-suicidality-from-universality-to-subtypes-and-personalization
#5
A B Niculescu, H Le-Niculescu, D F Levey, P L Phalen, H L Dainton, K Roseberry, E M Niculescu, J O Niezer, A Williams, D L Graham, T J Jones, V Venugopal, A Ballew, M Yard, T Gelbart, S M Kurian, A Shekhar, N J Schork, G E Sandusky, D R Salomon
Suicide remains a clear, present and increasing public health problem, despite being a potentially preventable tragedy. Its incidence is particularly high in people with overt or un(der)diagnosed psychiatric disorders. Objective and precise identification of individuals at risk, ways of monitoring response to treatments and novel preventive therapeutics need to be discovered, employed and widely deployed. We sought to investigate whether blood gene expression biomarkers for suicide (that is, a 'liquid biopsy' approach) can be identified that are more universal in nature, working across psychiatric diagnoses and genders, using larger cohorts than in previous studies...
August 15, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28805673/alk-status-assessment-with-liquid-biopsies-of-lung-cancer-patients
#6
REVIEW
Paul Hofman
Patients with advanced stage non-small cell lung carcinoma (NSCLC) harboring an anaplastic lymphoma kinase ALK gene rearrangement, detected from a tissue sample, can benefit from targeted ALK inhibitor treatment. However, while treatment is initially effective in most cases, relapse or progression occurs due to different resistance mechanisms including mutations in the tyrosine kinase domain of echinoderm microtubule-associated protein-like 4 (EML44)-ALK. The liquid biopsy concept has recently radically changed the clinical care of NSCLC patients, in particular for those harboring an epidermal growth factor receptor (EGFR) gene mutation...
August 12, 2017: Cancers
https://www.readbyqxmd.com/read/28801876/tumor-dna-an-emerging-biomarker-in-head-and-neck-cancer
#7
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/28801248/clinical-value-of-ctdna-in-upper-gi-cancers-a-systematic-review-and-meta-analysis
#8
REVIEW
A Creemers, S Krausz, M Strijker, M J van der Wel, E C Soer, R J Reinten, M G Besselink, J W Wilmink, M J van de Vijver, C J M V Noesel, J Verheij, S L Meijer, F Dijk, M F Bijlsma, M G H van Oijen, H W M van Laarhoven
BACKGROUND: The recent expanding technical possibilities to detect tumor derived mutations in blood, so-called circulating tumor DNA (ctDNA), has rapidly increased the interest in liquid biopsies. This review and meta-analysis explores the clinical value of ctDNA in malignancies of the upper gastro-intestinal tract. METHODS: PubMed, Cochrane and Embase databases were searched to identify studies reporting the diagnostic, prognostic or predictive value of ctDNA in patients with esophageal, gastric and pancreatic cancer, until January 2017...
August 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28790116/targeted-proteomics-identifies-proteomic-signatures-in-liquid-biopsies-of-the-endometrium-to-diagnose-endometrial-cancer-and-assist-in-the-prediction-of-the-optimal-surgical-treatment
#9
Elena Martinez, Antoine Lesur, Laura Devis, Silvia Cabrera, Xavier Matias-Guiu, Marc Hirschfeld, Jasmin Asberger, Jan van Oostrum, María de Los Ángeles Casares de Cal, Antonio Gómez-Tato, Jaume Reventos, Bruno Domon, Eva Colas, Antonio Gil-Moreno
PURPOSE: Endometrial cancer (EC) diagnosis relies on the observation of tumor cells in endometrial biopsies obtained by aspiration i.e., uterine aspirates), but it is associated with 22% undiagnosed patients and up to 50% of incorrectly assigned EC histotype and grade. We aimed to identify biomarker signatures in the fluid fraction of these biopsies to overcome these limitations. EXPERIMENTAL DESIGN: The levels of 52 proteins were measured in the fluid fraction of uterine aspirates from 116 patients by LC-PRM, the latest generation of targeted mass-spectrometry acquisition...
August 8, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28789823/serum-exosomal-protein-profiling-for-the-non-invasive-detection-of-cardiac-allograft-rejection
#10
Peter J Kennel, Amit Saha, Dawn A Maldonado, Raymond Givens, Danielle L Brunjes, Estibaliz Castillero, Xiaokan Zhang, Ruiping Ji, Alexandre Yahi, Isaac George, Donna M Mancini, Antonius Koller, Barry Fine, Emmanuel Zorn, Paolo C Colombo, Nicholas Tatonetti, Emily I Chen, P Christian Schulze
BACKGROUND: Exosomes are cell-derived circulating vesicles that play an important role in cell-cell communication. Exosomes are actively assembled and carry messenger RNAs, microRNAs and proteins. The "gold standard" for cardiac allograft surveillance is endomyocardial biopsy (EMB), an invasive technique with a distinct complication profile. The development of novel, non-invasive methods for the early diagnosis of allograft rejection is warranted. We hypothesized that the exosomal proteome is altered in acute rejection, allowing for a distinction between non-rejection and rejection episodes...
July 19, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28783097/role-of-salivary-biomarkers-in-detection-of-cardiovascular-diseases-cvd
#11
REVIEW
Saad Abdul Rehman, Zohaib Khurshid, Fayez Hussain Niazi, Mustafa Naseem, Hamed Al Waddani, Haafsa Arshad Sahibzada, Rabia Sannam Khan
Human whole mouth saliva (WMS) is secreted by salivary glands, namely parotid, submandibular/sublingual and other minor glands of the oral cavity. It is secreted in a systematic way, and contain informative proteins and peptides for the early detection of contagious diseases and organ-related diseases. The role of WMS as a liquid biopsy for the detection of cardiovascular diseases (CVD) through Myoglobin (MYO), Cardiac troponin I (cTnI), Creatine phosphokinase MB (CK-MB), Myeloperoxidase (MPO), brain natriuretic peptide (NT-proBNP), Exosomal miRNA, C-Reactive Protein (CRP), Matrix metalloproteinase-8 (MMP-8), MMP-9 and tissue inhibitor of MMP-8 (TIMP-1), leukotriene B4 has been well reported in last decade, that have been reviewed in the literature comprehensively below...
August 7, 2017: Proteomes
https://www.readbyqxmd.com/read/28782657/the-search-for-novel-diagnostic-and-prognostic-biomarkers-in-cholangiocarcinoma
#12
REVIEW
Rocio I R Macias, Jesus M Banales, Bruno Sangro, Jordi Muntané, Matias A Avila, Elisa Lozano, Maria J Perugorria, Francisco J Padillo, Luis Bujanda, Jose J G Marin
The poor prognosis of cholangiocarcinoma (CCA) is in part due to late diagnosis, which is currently achieved by a combination of clinical, radiological and histological approaches. Available biomarkers determined in serum and biopsy samples to assist in CCA diagnosis are not sufficiently sensitive and specific. Therefore, the identification of new biomarkers, preferably those obtained by minimally invasive methods, such as liquid biopsy, is important. The development of innovative technologies has permitted to identify a significant number of genetic, epigenetic, proteomic and metabolomic CCA features with potential clinical usefulness in early diagnosis, prognosis or prediction of treatment response...
August 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28780796/-changes-of-integrin-linked-kinase-expression-on-rats-pulmonary-fibrosis-induced-by-paraquat
#13
Y W Su, Y H Li, F Li, Y C Feng, H Huang, B X Wei, Y M Liu
Objective: To observe the expression of integrin-linked kinase on pulmonary fibrosis of paraquat (PQ) poisoning rats, and to discuss the relationship between ILK with pulmonary fibrosis induced by paraquat. Methods: Forty male Sprague-Dawley (SD) rats were randomly divided into control group and paraquat group, 20 in each group; the PQ group rats were intraperitoneally injected PQ liquid (18 mg/kg) , and the control group rats were injected the same volume of saline; 5 rats of these two groups were respectively sacrificed after 7, 14, 28, 56 days of PQ injection; according to the results of lung biopsy HE staining and Masson staining to observe the lung pathologic changes, measure the value of lung hydroxyproline and the expression of ILK...
May 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28771008/dna-hydrogel-with-aptamer-toehold-based-recognition-cloaking-and-decloaking-of-circulating-tumor-cells-for-live-cell-analysis
#14
Ping Song, Dekai Ye, Xiaolei Zuo, Jiang Li, Jianbang Wang, Huajie Liu, Michael Taeyoung Hwang, Jie Chao, Shao Su, Lihua Wang, Jiye Shi, Lianhui Wang, Wei Huang, Ratnesh Lal, Chunhai Fan
Circulating tumor cells (CTCs) contain molecular information of the primary tumor and can be used for predictive cancer diagnostics. Capturing rare live CTCs and their quantification in whole blood remain technically challenging. Here we report an aptamer-trigger clamped hybridization chain reaction (atcHCR) method for in-situ identification and subsequent cloaking/de-cloaking of CTCs by porous DNA hydrogels. These de-cloaked CTCs were then used for live cell analysis. In our design, a DNA staple strand with aptamer-toehold bi-blocks specifically recognizes epithelial cell adhesion molecule (EpCAM) on the CTC surface that triggers subsequent atcHCR via toehold-initiated branch migration...
August 3, 2017: Nano Letters
https://www.readbyqxmd.com/read/28766404/drug-eluting-biopsy-needle-as-a-novel-strategy-for-antimicrobial-prophylaxis-in-transrectal-prostate-biopsy
#15
Marcin Sieczkowski, Artur Gibas, Andrzej Wasik, Agata Kot-Wasik, Lidia Piechowicz, Jacek Namieśnik, Marcin Matuszewski
OBJECTIVES: To preclinically evaluate drug-eluting biopsy needles (patent pending WO2016118026) as a new potential way of antimicrobial prophylaxis for transrectal prostate biopsy. METHODS: Twenty steel biopsy needles have been coated with polyvinyl alcohol, ciprofloxacin, and amikacin. Modified biopsy needles have been randomly divided into 3 groups (1:2:1 ratio). Needles from group I were immersed for 30 minutes in dedicated test tubes containing saline. Needles from group II were immersed (one by one) for 5 seconds in a set of 12 test tubes containing saline...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28758104/liquid-biopsies-in-lung-cancer-time-to-implement-research-technologies-in-routine-care
#16
REVIEW
Linda Köhn, Mikael Johansson, Kjell Grankvist, Jonas Nilsson
Lung cancer is the leading cause of cancer mortality. A substantial progress in the understanding of lung cancer biology has resulted in several promising targeted therapies for advanced disease. Druggable targets today include point mutations such as EGFR, BRAF and re-arrangements in genes such as ALK and ROS1. Liquid biopsies collecting e.g., circulating tumor DNA (ctDNA) reflects overall tumor information and is not biased by analyzing of only a small fraction of the tumor and is always accessible in contrast to the lung cancer tissue...
July 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28755443/application-of-liquid-biopsies-in-cancer-targeted-therapy
#17
S Sumanasuriya, M B Lambros, J S de Bono
As a growing body of evidence demonstrates intertumoral and intratumoral heterogeneity and clonal evolution, both during carcinogenesis and also throughout treatment resulting in acquired drug resistance, the utility of blood-based assays or "liquid biopsies" is becoming increasingly recognized in clinical practice and trial design. "Liquid biopsies" provide a less invasive approach to the current gold standard of interrogating tumors by tissue biopsies, which are frequently unfeasible, associated with morbidity, and cannot be performed as often...
July 29, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28754316/patterns-and-functional-implications-of-platelets-upon-tumor-education
#18
REVIEW
Qun Zhang, Hongda Liu, Qingqing Zhu, Ping Zhan, Suhua Zhu, Jianya Zhang, Tangfeng Lv, Yong Song
While platelets are traditionally recognized to play a predominant role in hemostasis and thrombosis, increasing evidence verifies its involvement in malignancies. As a component of the tumor microenvironment, platelets influence carcinogenesis, tumor metastasis and chemotherapy efficiency. Platelets status is thus predictable as a hematological biomarker of cancer prognosis and a hot target for therapeutic intervention. On the other hand, the role of circulating tumor cells (CTCs) as an inducer of platelet activation and aggregation has been well acknowledged...
July 25, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28753876/emerging-utility-of-urinary-cell-free-nucleic-acid-biomarkers-for-prostate-bladder-and-renal-cancers
#19
REVIEW
Selena Y Lin, Jennifer A Linehan, Timothy G Wilson, Dave S B Hoon
CONTEXT: By 2020 the estimated incidence of genitourinary (GU) cancers (prostate, bladder, and kidney) will be over 2 million worldwide and responsible for ∼800 000 deaths. Current diagnosis and monitoring methods of GU cancer patients are often invasive and/or lack sensitivity and specificity. Given the utility of blood-based cell-free nucleic acid (cfNA) biomarkers, the development of urinary cfNA biomarkers may improve the sensitivity of urine assays utilizing urine sediment for GU cancers...
March 31, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28753793/micrornas-in-serum-exosomes-as-potential-biomarkers-in-clear-cell-renal-cell-carcinoma
#20
Wei Zhang, Maowei Ni, Ying Su, Hua Wang, Shaoxin Zhu, An Zhao, Guorong Li
BACKGROUND: Circulating microRNAs (miRNAs) in exosomes are emerging as clinically useful tools for cancer detection. However, little is known about their diagnostic impact in clear-cell renal cell carcinoma (ccRCC). OBJECTIVE: To investigate whether miRNAs in serum exosomes can serve as biomarkers in ccRCC. DESIGN, SETTING, AND PARTICIPANTS: Serum samples were obtained from 82 patients with ccRCC and 80 healthy volunteers. Exosomes were extracted and purified to selectively capture exosomes positive for tumor-associated epithelial cell adhesion molecule (EpCAM) via a magnetic bead technique...
October 14, 2016: European Urology Focus
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