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https://www.readbyqxmd.com/read/29329995/multifunctional-hybrid-graphene-oxide-for-circulating-tumor-cell-isolation-and-analysis
#1
Avijit PramaniK, Stacy Jones, Ye Gao, Carrie Sweet, Aruna Vangara, Salma Begum, Paresh Chandra Ray
Even in 21st century, >90% cancer-associated deaths are caused by metastatic disease. Circulating tumor cells (CTCs), which circulate in the blood stream after release from primary tumors, extravasate and form fatal metastases in different organs. Several clinical trials indicate that CTCs can be used as a liquid biopsy of tumors for early diagnosis of cancers. Since CTCs are extremely rare and exhibit heterogeneous biology due to epithelial-mesenchymal transition (EMT), oncologists continue to face enormous challenges in using CTCs as a true "liquid biopsy" for cancer patients...
January 9, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29326054/size-based-separation-methods-of-circulating-tumor-cells
#2
Si-Jie Hao, Yuan Wan, Yi-Qiu Xia, Xin Zou, Si-Yang Zheng
Circulating tumor cells (CTCs) originate from the primary tumor mass and enter into the peripheral bloodstream. Compared to other "liquid biopsy" portfolios such as exosome, circulating tumor DNA/RNA (ctDNA/RNA), CTCs have incomparable advantages in analyses of transcriptomics, proteomics, and signal colocalization. Hence, CTCs hold the key to understanding the biology of metastasis and play a vital role in cancer diagnosis, treatment monitoring, and prognosis. Size-based enrichment featureS prominently in CTC isolation...
January 8, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29326053/molecular-analysis-of-circulating-tumors-cells-biomarkers-beyond-enumeration
#3
William L Hwang, Haley M Pleskow, David T Miyamoto
Advances in our molecular understanding of cancer biology have paved the way to an expanding compendium of molecularly-targeted therapies, accompanied by the urgent need for biomarkers that enable the precise selection of the most appropriate therapies for individual cancer patients. Circulating biomarkers such as circulating tumor cells (CTCs) are poised to fill this need, since they are "liquid biopsies" that can be performed non-invasively and serially, and may capture the spectrum of spatial and temporal tumor heterogeneity better than conventional tissue biopsies...
January 8, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29322205/the-role-of-albumin-bilirubin-grade-and-inflammation-based-index-in-patients-with-hepatocellular-carcinoma-treated-with-stereotactic-body-radiotherapy
#4
Eleni Gkika, Dominik Bettinger, Leo Krafft, Michael Schultheiss, Hannes Philipp Neeff, Lars Maruschke, Michaela Schulenburg, Sonja Adebahr, Simon Kirste, Ursula Nestle, Robert Thimme, Anca-Ligia Grosu, Thomas Baptist Brunner
PURPOSE: We evaluated the prognostic accuracy of the albumin-bilirubin (ALBI) grade and the inflammation-based index (IBI) in estimating overall survival (OS) and toxicity in patients with hepatocellular carcinoma (HCC) treated with stereotactic body radiotherapy (SBRT). MATERIALS AND METHODS: Forty patients with 47 HCC lesions with a Barcelona Clinic Liver Cancer (BCLC) classification stage B or C were treated with SBRT in 3-12 fractions. The ALBI grade and the IBI were calculated at different time points (baseline, during, at the end of treatment and at follow-up) and compared with the Child-Pugh (CP) score as well as other patient- and treatment-related parameters, concerning OS and toxicity...
January 10, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29321816/erbb-signaling-in-ctcs-of-ovarian-cancer-and-glioblastoma
#5
REVIEW
Anjali Geethadevi, Deepak Parashar, Erin Bishop, Sunila Pradeep, Pradeep Chaluvally-Raghavan
Circulating Tumor Cells (CTCs) are floating cell populations, which are resistant to anoikis after detachment from the primary sites and travel through the circulatory and lymphatic systems to disseminate throughout the body. CTCs are considered as seed cells for metastasis, and thus isolation of CTCs does not require any invasive procedure. Based on the nature and location of ovarian cancer and glioblastoma, the role of CTCs and hematogenous (carried by blood) spreading of tumor cells in these cancers were not understood well...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29319382/ctc-derived-ar-v7-detection-as-a-prognostic-and-predictive-biomarker-in-advanced-prostate-cancer
#6
Diogo A Bastos, Emmanuel S Antonarakis
Prostate cancer is a highly heterogeneous disease, with remarkably different prognosis across all stages. Increased circulating tumor cell (CTC) count (≥ 5) using the CellSearch assay has been identified as one of the markers that can be used to predict survival, with added value beyond currently available prognostic factors. Recently, androgen receptor splice variant 7 (AR-V7) detection has been associated with worse outcomes for patients with castration-resistant prostate cancer (CRPC) treated with novel androgen receptor-signaling (ARS) inhibitors such as abiraterone and enzalutamide but not taxane chemotherapies...
January 10, 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29316779/double-balloon-endoscopy-after-incomplete-colonoscopy-and-its-comparison-with-computed-tomography-colonography
#7
Carlijn Hermans, Dennis van der Zee, Lennard Gilissen
Background/Aims: Because of the national screening program for colorectal carcinoma in The Netherlands, the number of colonoscopies has increased. In case of incomplete colonoscopy, computed tomography colonography (CTC) and double-balloon colonoscopy (DBc) are alternative options. This study evaluated cecal intubation rate and pathology detection rate in the previously unexplored part of the colon, complication rate of DBc, and CTC results after incomplete colonoscopy. Methods: Retrospective observational study in a tertiary referral hospital regarding DBc and CTC reports from cases with incomplete colonoscopy...
January 10, 2018: Clinical Endoscopy
https://www.readbyqxmd.com/read/29311117/expanded-genomic-profiling-of-circulating-tumor-cells-in-metastatic-breast-cancer-patients-to-assess-biomarker-status-and-biology-over-time
#8
Mark Jesus M Magbanua, Hope S Rugo, Denise M Wolfe, Louai Hauranieh, Ritu Roy, Praveen Pendyala, Eduardo Sosa, Janet H Scott, Jin Sun Lee, Brandelyn N Pitcher, Terry M Hyslop, William T Barry, Steven J Isakoff, Maura N Dickler, Laura J Van't Veer, John W Park
Purpose: We profiled circulating tumor cells (CTCs) patients to study the biology of blood-borne metastasis and to monitor biomarker status in metastatic breast cancer (MBC).Methods: CTCs were isolated from 105 MBC patients using EPCAM-based immunomagnetic enrichment and fluorescence-activated cells sorting (IE/FACs), 28 of whom had serial CTC analysis (74 samples, 2-5 time points). CTCs were subjected to microfluidic-based multiplex QPCR array of 64 cancer-related genes (n=151) and genome-wide copy number analysis by array comparative genomic hybridization (n=49)...
January 8, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29310491/influence-of-processing-methods-on-physico-mechanical-properties-of-ibuprofen-hpc-ssl-formulation
#9
Kaushalendra Chaturvedi, Bhavin Y Gajera, Ting Xu, Harsh Shah, Rutesh H Dave
The objective of the present study was to investigate the influence of processing methods on the physical and mechanical properties of formulations containing Ibuprofen and HPC-SSL. The powder blends, containing Ibuprofen and HPC-SSL in ratio of 9:0.5, were processed using melt granulation (MG) by hot melt extrusion (HME) and wet granulation (WG) by high shear mixer. Formulated granules and powder blends were compressed into round flat faced tablets using Riva Piccola tablet press. Differential scanning calorimetry (DSC) and X-ray powder diffraction (XRPD) studies proved that granulation process did not significantly alter the crystallinity of Ibuprofen, however particle density and flow properties were significantly improved...
January 9, 2018: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29306603/colon-cancer-with-rapid-growth-in-16%C3%A2-months-confirmed-by-computed-tomographic-colonography
#10
Masaki Matsuoka, Norihito Shimizu, Koichi Nagata, Hiroshi Saito
This report describes a case of rapidly growing colon cancer confirmed by computed tomographic colonography (CTC). A 75-year-old woman presented at our clinic with complaints of abdominal discomfort and melena. Colorectal examination was performed via CTC. The findings were normal. Sixteen months later, she was referred to our clinic again for positive findings on a faecal immunochemical screening test. A repeat CTC was performed, which revealed a 3 cm ulcerated tumour at the ascending colon. Colonoscopy with biopsy revealed tubular adenocarcinoma...
January 3, 2018: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/29304900/circulating-tumor-cells-and-implications-of-the-epithelial-to-mesenchymal-transition
#11
Lori E Lowes, Alison L Allan
The majority of cancer-related deaths result from metastasis, the process by which cancer cells escape the primary tumor site and enter into the blood circulation in order to disseminate to secondary locations throughout the body. Tumor cells found within the circulation are referred to as circulating tumor cells (CTCs), and their detection and enumeration correlate with poor prognosis. The epithelial-to-mesenchymal transition (EMT) is a dynamic process that imparts epithelial cells with mesenchymal-like properties, thus facilitating tumor cell dissemination and contributing to metastasis...
2018: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/29301749/in-situ-detection-and-quantification-of-ar-v7-ar-fl-psa-and-kras-point-mutations-in-circulating-tumor-cells
#12
Amin El-Heliebi, Claudia Hille, Navya Laxman, Jessica Svedlund, Christoph Haudum, Erkan Ercan, Thomas Kroneis, Shukun Chen, Maria Smolle, Christopher Rossmann, Tomasz Krzywkowski, Annika Ahlford, Evangelia Darai, Gunhild von Amsberg, Winfried Alsdorf, Frank König, Matthias Löhr, Inge de Kruijff, Sabine Riethdorf, Tobias M Gorges, Klaus Pantel, Thomas Bauernhofer, Mats Nilsson, Peter Sedlmayr
BACKGROUND: Liquid biopsies can be used in castration-resistant prostate cancer (CRPC) to detect androgen receptor splice variant 7 (AR-V7), a splicing product of the androgen receptor. Patients with AR-V7-positive circulating tumor cells (CTCs) have greater benefit of taxane chemotherapy compared with novel hormonal therapies, indicating a treatment-selection biomarker. Likewise, in those with pancreatic cancer (PaCa), KRAS mutations act as prognostic biomarkers. Thus, there is an urgent need for technology investigating the expression and mutation status of CTCs...
January 4, 2018: Clinical Chemistry
https://www.readbyqxmd.com/read/29301747/an-rna-based-digital-circulating-tumor-cell-signature-is-predictive-of-drug-response-and-early-dissemination-in-prostate-cancer
#13
David T Miyamoto, Richard J Lee, Mark Kalinich, Joseph LiCausi, Yu Zheng, Tianqi Chen, John D Milner, Erin Emmons, Uyen Ho, Katherine Broderick, Erin Silva, Sarah Javaid, Tanya Todorova Kwan, Xin Hong, Douglas M Dahl, Francis J McGovern, Jason A Efstathiou, Matthew R Smith, Lecia V Sequist, Ravi Kapur, Chin-Lee Wu, Shannon L Stott, David T Ting, Anita Giobbie-Hurder, Mehmet Toner, Shyamala Maheswaran, Daniel A Haber
Blood-based biomarkers are critical in metastatic prostate cancer, where characteristic bone metastases are not readily sampled, and they may enable risk stratification in localized disease. We established a sensitive and high-throughput strategy for analyzing prostate circulating tumor cells (CTCs) using microfluidic cell enrichment followed by digital quantitation of prostate-derived transcripts. In a prospective study of 27 metastatic castration-resistant prostate cancer patients treated with first-line abiraterone, pretreatment elevation of the digital CTCM Score identifies a high risk population with poor overall survival (HR 6...
January 4, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29296047/deduced-probable-human-leukocyte-antigen-haplotypes-associated-with-hla-a-11-256q-and-hla-a-02-621-identified-by-case-analyses-of-taiwanese-individuals
#14
Kuo-Liang Yang, Zheng-Zhong Zheng
Objective: HLA-A*11:256Q and HLA-A*02:621 are two low-frequency HLA-A alleles. The aim here is to report the ethnicity of A*11:256Q and A*02:621 and associated human leukocyte antigen (HLA) haplotypes among Taiwanese individuals. Materials and Methods: HLA data from randomized Taiwanese registered in the Tzu Chi Stem Cells Centre and China Shanghai Tissuebank Diagnostics were analyzed. HLA typing of the donors was carried out using a sequence-based typing method to confirm the two low-incidence alleles...
October 2017: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/29291161/nanotechnology-based-strategies-for-early-cancer-diagnosis-using-circulating-tumor-cells-as-a-liquid-biopsy
#15
REVIEW
Qinqin Huang, Yin Wang, Xingxiang Chen, Yimeng Wang, Zhiqiang Li, Shiming Du, Lianrong Wang, Shi Chen
Circulating tumor cells (CTCs) are cancer cells that shed from a primary tumor and circulate in the bloodstream. As a form of "tumor liquid biopsy", CTCs provide important information for the mechanistic investigation of cancer metastasis and the measurement of tumor genotype evolution during treatment and disease progression. However, the extremely low abundance of CTCs in the peripheral blood and the heterogeneity of CTCs make their isolation and characterization major technological challenges. Recently, nanotechnologies have been developed for sensitive CTC detection; such technologies will enable better cell and molecular characterization and open up a wide range of clinical applications, including early disease detection and evaluation of treatment response and disease progression...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29291024/circulating-and-disseminated-tumor-cells-in-pancreatic-cancer-and-their-role-in-patient-prognosis-a-systematic-review-and-meta-analysis
#16
David Stephenson, Christopher Nahm, Terence Chua, Anthony Gill, Anubhav Mittal, Philip de Reuver, Jaswinder Samra
Background: Disseminated tumor cells (DTCs) and circulating tumor cells (CTCs) have been postulated to seed metastases and contribute to poorer patient outcomes in many types of solid cancer. To date, no systematic reviews have examined the role of both DTCs and CTCs in pancreatic cancer. We aimed to determine the prognostic value of DTCs/CTCs in pancreatic cancer using a systematic review and meta-analysis. Materials and Methods: A comprehensive literature search identified studies examining DTCs and CTCs in the bone marrow and blood of pancreatic cancer patients at diagnosis with follow-up to determine disease-free/progression-free survival (DFS/PFS) and overall survival (OS)...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290823/magnetic-nanowire-networks-for-dual-isolation-and-detection-of-tumor-associated-circulating-biomarkers
#17
HyungJae Lee, Mihye Choi, Jiyun Lim, Minkyung Jo, Ji-Youn Han, Tae Min Kim, Youngnam Cho
Purpose: Recent developments in genomic and molecular methods have revolutionized the range of utilities of tumor-associated circulating biomarkers in both basic and clinical research. Herein, we present a novel approach for ultrasensitive extraction of cfDNA and CTCs, at high yield and purity, via the formation of magnetic nanowire networks. Materials and Methods: We fabricated and characterized biotinylated cationic polyethylenimine and biotinylated antibody cocktail-conjugated magnetic polypyrrole NWs (PEI/mPpy NW and Ab cocktail/mPpy NW, respectively)...
2018: Theranostics
https://www.readbyqxmd.com/read/29289429/synaptophysin-expression-on-circulating-tumor-cells-in-patients-with-castration-resistant-prostate-cancer-undergoing-treatment-with-abiraterone-acetate-or-enzalutamide
#18
Sumanta K Pal, Miaoling He, Lin Chen, Lixin Yang, Raju Pillai, Przemyslaw Twardowski, JoAnn Hsu, Marcin Kortylewski, Jeremy O Jones
BACKGROUND: With the advent of secondary androgen receptor (AR)-targeted therapies in metastatic castration resistant prostate cancer (PC), nonadenocarcinoma PCs are becoming more prevalent. Many of these cancers express neuroendocrine markers, which may provide biomarkers for emergence of this disease state. We aimed to quantify the expression of synaptophysin (Syp) on circulating tumor cells (CTCs) from serial samples of patients being treated with abiraterone acetate or enzalutamide...
December 27, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29289318/reducing-wbc-background-in-cancer-cell-separation-products-by-negative-acoustic-contrast-particle-immuno-acoustophoresis
#19
Kevin Cushing, Eva Undvall, Yvonne Ceder, Hans Lilja, Thomas Laurell
Cancer cells display acoustic properties enabling acoustophoretic separation from white blood cells (WBCs) with 2-3 log suppression of the WBC background. However, a subset of WBCs has overlapping acoustic properties with cancer cells, which is why label-free acoustophoretic cancer cell isolation needs additional purification prior to analysis. This paper reports for the first time a proof of concept for continuous flow acoustophoretic negative selection of WBCs from cancer cells using negative acoustic contrast elastomeric particles (EPs) activated with CD45-antibodies that specifically bind to WBCs...
February 13, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29286615/epcam-based-flow-cytometric-detection-of-circulating-tumor-cells-in-gallbladder-carcinoma-cases
#20
Namrata Punit Awasthi, Swati Kumari, Azfar Neyaz, Sameer Gupta, Akash Agarwal, Ashish Singhal, Nuzhat Husain
Purpose: Liquid biopsy has entered the arena of cancer diagnostics in the past decade and detection of circulating tumor cells (CTC) is one diagnostic component. CTCs in gallbladder cancer (GBC) have hitherto not been comprehensively analysed. Methods and Results: The current study focused on the diagnostic role of CTCs in 27 cases of treatment-naive GBC and 6 normal controls as well as 6 cases of cholecystitis. An EasySep kit featuring negative immunomagnetic bead separation and flow cytometric detection of EpCAM positive and CD45 negative cells revealed CTCs in 25 of the 27 cases...
December 29, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
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