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Circulating tumor cell

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https://www.readbyqxmd.com/read/28938688/drag-reducing-polymers-decrease-hepatic-injury-and-metastases-after-liver-ischemia-reperfusion
#1
Samer Tohme, Marina V Kameneva, Hamza O Yazdani, Vikas Sud, Julie Goswami, Patricia Loughran, Hai Huang, Richard L Simmons, Allan Tsung
INTRODUCTION: Surgery, a crucial therapeutic modality in the treatment of solid tumors, can induce sterile inflammatory processes which can result in metastatic progression. Liver ischemia and reperfusion (I/R) injury, an inevitable consequence of hepatic resection of metastases, has been shown to foster hepatic capture of circulating cancer cells and accelerate metastatic growth. Efforts to reduce these negative consequences have not been thoroughly investigated. Drag reducing polymers (DRPs) are blood-soluble macromolecules that can, in nanomolar concentrations, increase tissue perfusion, decrease vascular resistance and decrease near-wall microvascular concentration of neutrophils and platelets thereby possibly reducing the inflammatory microenvironment...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938656/the-prognostic-and-diagnostic-value-of-circulating-tumor-cells-in-bladder-cancer-and-upper-tract-urothelial-carcinoma-a-meta-analysis-of-30-published-studies
#2
Zheng Zhang, Wei Fan, Qiaoling Deng, Shihui Tang, Ping Wang, Peipei Xu, June Wang, Mingxia Yu
There are inconsistent conclusions in the association between circulating tumor cells (CTCs) and urothelial cancer (UC). We performed a meta-analysis to assess the prognostic and diagnostic value of CTCs in UC. We search Medline, Embase and Web of science for relevant studies. The study was set up according to the inclusion/exclusion criteria. 30 published studies with a total of 2161 urothelial cancer patients were included. Meta-analysis showed that CTC-positive was significantly associated with tumor stage (≤ II vs III, IV) (OR = 4...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938646/concordance-between-circulating-tumor-cells-and-clinical-status-during-follow-up-in-anaplastic-lymphoma-kinase-alk-non-small-cell-lung-cancer-patients
#3
Mariano Provencio, David Pérez-Callejo, María Torrente, Paloma Martin, Virginia Calvo, Lourdes Gutiérrez, Fernando Franco, Maria José Coronado, Juan Luis Cruz-Bermúdez, Asunción Martín Ruiz-Valdepeñas, Alberto Cruz-Bermúdez, Margarita Sánchez-Beato, Atocha Romero, Aránzazu García-Grande
BACKGROUND: The identification of anaplastic lymphoma kinase (ALK) rearrangements is found in approximately 5% of non-small-cell lung cancers (NSCLCs). However, the development of liquid biopsies as a diagnostic tool is less developed in these cases. This study investigates the use of CTCs during treatment, together with an extended follow-up to correlate with clinical evolution. PATIENTS AND METHODS: A total of 13 patients out of a cohort of 212 patients with lung adenocarcinoma, presented ALK rearrangements (6%) confirmed by tumor biopsy...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938635/distribution-of-circulating-tumor-dna-in-lung-cancer-analysis-of-the-primary-lung-and-bone-marrow-along-with-the-pulmonary-venous-and-peripheral-blood
#4
Taichiro Goto, Yosuke Hirotsu, Kenji Amemiya, Takahiro Nakagomi, Daichi Shikata, Yujiro Yokoyama, Kenichiro Okimoto, Toshio Oyama, Hitoshi Mochizuki, Masao Omata
Circulating tumor DNA (ctDNA), extracted from plasma, is a non-invasive surrogate biomarker. However, the distribution of ctDNA in the body still remains to be elucidated. In this study, resected lung tumors, with simultaneous blood and bone marrow samples, were analyzed to elucidate the distribution of ctDNA. Rib bone marrow, pulmonary venous blood (Pul.V) and peripheral blood (Peri.B) were obtained from 30 patients. The liquid samples were divided into cell pellets and supernatant by centrifugation; a total of 212 DNA samples were subjected to massively parallel sequencing...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938559/doxorubicin-loaded-platelets-conjugated-with-anti-cd22-mabs-a-novel-targeted-delivery-system-for-lymphoma-treatment-with-cardiopulmonary-avoidance
#5
Peipei Xu, Huaqin Zuo, Rongfu Zhou, Fan Wang, Xu Liu, Jian Ouyang, Bing Chen
B-cell lymphoma accounts for approximately 85% of all adult non-Hodgkin's lymphoma cases. Doxorubicin (DOX) is an indispensable drug for the treatment of non-Hodgkin's lymphoma. However, DOX causes severe cardiotoxicity, which limits its use in conventional treatment strategies. In this study, we developed a novel drug delivery system for lymphoma treatment: DOX-loaded platelets that were conjugated with anti-CD22 monoclonal antibodies (mAbs) (DOX-platelet-CD22). Platelets are bio- and immune-compatible drug carriers that can prolong the circulation time of drugs...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938541/differential-expression-of-circulating-biomarkers-of-tumor-phenotype-and-outcomes-in-previously-treated-non-small-cell-lung-cancer-patients-receiving-erlotinib-vs-cytotoxic-chemotherapy
#6
Mary Jo Fidler, Casey Frankenberger, Richard Seto, Gabriela C Lobato, Cristina L Fhied, Selina Sayidine, Sanjib Basu, Mark Pool, Reem Karmali, Marta Batus, Wen-Rong Lie, David Hayes, Jehangir Mistry, Philip Bonomi, Jeffrey A Borgia
BACKGROUND: The objective of this study was to identify serum biomarkers capable of predicting clinical outcomes in previously-treated NSCLC patients with wild-type for EGFR activating mutations or insufficient tissue for mutation status determination. METHODS: Sixty-six Luminex immunoassays representative of biological themes that emerged from a re-analysis of transcriptome data from the Cancer Genome Atlas (TCGA) were evaluate against pretreatment serum specimens from previously-treated advanced NSCLC patients received either cytotoxic chemotherapy (n=32) or erlotinib (n=79)...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28937704/a-high-concentration-of-fatty-acids-induces-tnf-%C3%AE-as-well-as-no-release-mediated-by-the-p2x4-receptor-and-the-protective-effects-of-puerarin-in-raw264-7-cells
#7
Yun-Ming Tu, Cheng-Xin Gong, Lu Ding, Xing-Zi Liu, Tao Li, Fang-Fang Hu, Shuo Wang, Chao-Peng Xiong, Shang-Dong Liang, Hong Xu
Circulating levels of free fatty acids (FFAs) are often found to be increased in patients with type 2 diabetes mellitus (T2DM) and metabolic syndrome (MS). High plasma FFA levels may give rise to maladaptive macrophage activation and promote inflammatory responses, which has been proposed as a potential mechanism for the development of DM and MS. P2X4 receptor (P2X4R), a ligand-gated cation channel activated by extracellular adenosine triphosphate (ATP), plays a primary role in the regulation of inflammatory responses...
September 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28937589/viral-cellular-dna-junctions-as-molecular-markers-for-assessing-intra-tumor-heterogeneity-in-cervical-cancer-and-for-the-detection-of-circulating-tumor-dna
#8
Katrin Carow, Mandy Gölitz, Maria Wolf, Norman Häfner, Lars Jansen, Heike Hoyer, Elisabeth Schwarz, Ingo B Runnebaum, Matthias Dürst
The development of cervical cancer is frequently accompanied by the integration of human papillomaviruses (HPV) DNA into the host genome. Viral-cellular junction sequences, which arise in consequence, are highly tumor specific. By using these fragments as markers for tumor cell origin, we examined cervical cancer clonality in the context of intra-tumor heterogeneity. Moreover, we assessed the potential of these fragments as molecular tumor markers and analyzed their suitability for the detection of circulating tumor DNA in sera of cervical cancer patients...
September 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28935427/hesperidin-protects-against-chemically-induced-hepatocarcinogenesis-via-modulation-of-nrf2-are-ho-1-ppar%C3%AE-and-tgf-%C3%AE-1-smad3-signaling-and-amelioration-of-oxidative-stress-and-inflammation
#9
Ayman M Mahmoud, Hanaa M Mohammed, Sally M Khadrawy, Sanaa R Galaly
Hesperidin is a plant-derived bioflavonoid with promising antitumor efficacy, though the underlying mechanisms of action remain poorly elucidated. Thus, we evaluated the in vivo chemopreventive effect of hesperidin against diethylnitrosamine (DEN)-induced hepatocarcinogenesis. We demonstrated the modulatory effect of hesperidin on Nrf2/ARE/HO-1, PPARγ and TGF-β1/Smad3 signaling. Hepatocarcinogenesis was initiated with DEN and promoted with carbon tetrachloride (CCl4). DEN/CCl4-induced rats were treated with 50 and 100 mg/kg hesperidin throughout the experiment...
September 18, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28933058/extracellular-vesicles-how-they-interact-with-endothelium-potentially-contributing-to-metastatic-cancer-cell-implants
#10
REVIEW
Murray M Bern
Extracellular vesicles (EV) are blebs of cellular membranes, which entrap small portions of subjacent cytosol. They are released from a variety of cells, circulate in the blood for an unknown length of time and come to rest on endothelial surfaces. They contribute to an array of physiologic pathways, the complexity of which is still being investigated. They contribute to metastatic malignant cell implants and tumor-related angiogenesis, possibly abetted by the tissue factor that they carry. It is thought that the adherence of the EV to endothelium is dependent upon a combination of their P-selectin glycoprotein ligand-1 and exposed phosphatidylserine, the latter of which is normally hidden on the inner bilayer of the intact cellular membrane...
September 21, 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28932842/microfluidic-isolation-of-platelet-covered-circulating-tumor-cells
#11
Xiaocheng Jiang, Keith H K Wong, Aimal H Khankhel, Mahnaz Zeinali, Eduardo Reategui, Matthew J Phillips, Xi Luo, Nicola Aceto, Fabio Fachin, Anh N Hoang, Wooseok Kim, Annie E Jensen, Lecia V Sequist, Shyamala Maheswaran, Daniel A Haber, Shannon L Stott, Mehmet Toner
The interplay between platelets and tumor cells is known to play important roles in metastasis by enhancing tumor cell survival, tumor-vascular interactions, and escape from immune surveillance. However, platelet-covered circulating tumor cells (CTC) are extremely difficult to isolate due to masking or downregulation of surface epitopes. Here we describe a microfluidic platform that takes advantage of the satellite platelets on the surface of these "stealth" CTCs as a ubiquitous surface marker for isolation...
September 21, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28932547/does-lung-cancer-surgery-cause-circulating-tumor-cells-a-multicenter-prospective-study
#12
Noriyuki Matsutani, Noriyoshi Sawabata, Masafumi Yamaguchi, Tetsukan Woo, Yujin Kudo, Akikazu Kawase, Satoshi Shiono, Hisae Iinuma, Shigeki Morita, Masafumi Kawamura
BACKGROUND: Cancer relapse is caused by residual isolated tumor cells (ITCs) remaining in the body after surgery. It is speculated that surgical manipulation may cause circulating tumor cells (CTCs) which are the origin of ITCs in the body. The occurrence of CTCs in surgical patients with non-small cell lung cancer (NSCLC) has been shown in retrospective observation, but not prospectively, thus we conducted a multicenter prospective study regarding the occurrence of CTCs by surgical manipulation...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28932119/delivery-of-a-chemotherapeutic-drug-using-novel-hollow-carbon-spheres-for-esophageal-cancer-treatment
#13
Li Zhang, Mengchu Yao, Wei Yan, Xiaoning Liu, Baofei Jiang, Zhaoye Qian, Yong Gao, Xiao-Jie Lu, Xiaofei Chen, Qi-Long Wang
Low toxicity and high efficacy are the key factors influencing the real-world clinical applications of nanomaterial-assisted drug delivery. In this study, novel hollow carbon spheres (HCSs) with narrow size distribution were developed. In addition to demonstrating their ease of synthesis for large-scale production, we also demonstrated in vitro that the HCSs possessed high drug-loading capacity, lower cell toxicity, and optimal drug release profile at low pH, similar to the pH in the tumor microenvironment...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28931314/the-diagnostic-potential-of-mutation-detection-from-single-circulating-tumor-cells-in-cancer-patients
#14
Francesca Salvianti, Pamela Pinzani
Circulating tumor cells (CTCs) have gained importance in the oncology field as biomarkers of tumor development. The most relevant observation that emerged from the recent studies on CTCs is their heterogeneity, which can be investigated by new technologies for single cell analysis. Areas covered: This review considers the most recent advances (limited to the last two years) in the mutational analysis of single CTCs with a critical point of view on the technical challenges still to be faced and the steps needed to reach a standardization of the procedures able to translate these new approaches into clinical practice...
September 21, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28930649/ph-multistage-responsive-micellar-system-with-charge-switch-and-peg-layer-detachment-for-co-delivery-of-paclitaxel-and-curcumin-to-synergistically-eliminate-breast-cancer-stem-cells
#15
Zhe Yang, Na Sun, Rui Cheng, Chenyang Zhao, Zerong Liu, Xian Li, Jie Liu, Zhongmin Tian
Several studies have demonstrated that cancer stem cells (CSCs) are responsible for replenishing bulk tumor cells, generating new tumors and causing metastasis and relapse. Although combination therapy with multiple chemotherapeutics is considered to be a promising approach for simultaneously eliminating non-CSCs and CSCs, it is difficult to deliver drugs into the inner region of a solid tumor where the CSCs are located due to a lack of capillaries. Here, we synthesized a pH-sensitive polymer, poly(ethylene glycol)-benzoic imine-poly(γ-benzyl-l-aspartate)-b-poly(1-vinylimidazole) block copolymer (PPBV), to develop a pH multistage responsive micellar system for co-delivering paclitaxel and curcumin and synergistically eliminating breast cancer stem cells (bCSCs) and non-bCSCs...
September 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28929739/ultrasensitive-capture-detection-and-release-of-circulating-tumor-cells-using-nanochannel-ionchannel-hybrid-coupled-with-electrochemical-detection-technique
#16
Jing Cao, Xiao-Ping Zhao, Muhammad Rizwan Younis, Zhong-Qiu Li, Xing-Hua Xia, Chen Wang
With the growing demands of the early, accurate, and sensitive diagnosis for cancers, the development of new diagnostic technologies becomes increasingly important. In this study, we proposed a strategy for efficient capture and sensitive detection of circulating tumor cells (CTCs) using array nanochannel-ionchannel hybrid coupled with electrochemical detection technique. The aptamer probe was immobilized on the ionchannel surface to couple with the protein overexpressed on CTCs membrane. Through this special molecular recognition, CTCs can be selectively captured...
September 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28928901/systematic-correlation-analyses-of-circulating-tumor-cells-with-clinical-variables-and-tumor-markers-in-lung-cancer-patients
#17
Xu Wang, Kewei Ma, Zhiguang Yang, Jiuwei Cui, Hua He, Andrew R Hoffman, Ji-Fan Hu, Wei Li
Measurement of circulating tumor cells (CTC) offers promise as a clinical biomarker to monitor disease status, therapeutic response, and progression in cancer patients. However, its clinical value in lung cancer patients has not been fully explored. We systematically evaluate the association of CTCs with clinical variables and tumor markers in a cohort of lung cancer patients. Using the CELLSEARCH System, CTCs were detected in both small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC) patients prior to therapy...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928431/tumor-induces-muscle-wasting-in-mice-through-releasing-extracellular-hsp70-and-hsp90
#18
Guohua Zhang, Zhelong Liu, Hui Ding, Yong Zhou, Hoang Anh Doan, Ka Wai Thomas Sin, Zhiren J Zhu, Rene Flores, Yefei Wen, Xing Gong, Qingyun Liu, Yi-Ping Li
Cachexia, characterized by muscle wasting, is a major contributor to cancer-related mortality. However, the key cachexins that mediate cancer-induced muscle wasting remain elusive. Here, we show that tumor-released extracellular Hsp70 and Hsp90 are responsible for tumor's capacity to induce muscle wasting. We detected high-level constitutive release of Hsp70 and Hsp90 associated with extracellular vesicles (EVs) from diverse cachexia-inducing tumor cells, resulting in elevated serum levels in mice. Neutralizing extracellular Hsp70/90 or silencing Hsp70/90 expression in tumor cells abrogates tumor-induced muscle catabolism and wasting in cultured myotubes and in mice...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28928380/predictors-of-responses-to-immune-checkpoint-blockade-in-advanced-melanoma
#19
N Jacquelot, M P Roberti, D P Enot, S Rusakiewicz, N Ternès, S Jegou, D M Woods, A L Sodré, M Hansen, Y Meirow, M Sade-Feldman, A Burra, S S Kwek, C Flament, M Messaoudene, C P M Duong, L Chen, B S Kwon, A C Anderson, V K Kuchroo, B Weide, F Aubin, C Borg, S Dalle, O Beatrix, M Ayyoub, B Balme, G Tomasic, A M Di Giacomo, M Maio, D Schadendorf, I Melero, B Dréno, A Khammari, R Dummer, M Levesque, Y Koguchi, L Fong, M Lotem, M Baniyash, H Schmidt, I M Svane, G Kroemer, A Marabelle, S Michiels, A Cavalcanti, M J Smyth, J S Weber, A M Eggermont, L Zitvogel
Immune checkpoint blockers (ICB) have become pivotal therapies in the clinical armamentarium against metastatic melanoma (MMel). Given the frequency of immune related adverse events and increasing use of ICB, predictors of response to CTLA-4 and/or PD-1 blockade represent unmet clinical needs. Using a systems biology-based approach to an assessment of 779 paired blood and tumor markers in 37 stage III MMel patients, we analyzed association between blood immune parameters and the functional immune reactivity of tumor-infiltrating cells after ex vivo exposure to ICB...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28925689/highly-efficient-capture-and-electrochemical-release-of-circulating-tumor-cells-by-using-aptamers-modified-gold-nanowire-arrays
#20
Ting-Ting Zhai, Dekai Ye, Qian-Wen Zhang, Zeng-Qiang Wu, Xing-Hua Xia
The effectively capturing and releasing of circulating tumor cells (CTCs) is of significant importance in cancer prognose and treatment. Herein, we report a highly efficient method to capture and release human leukemic lymphoblasts (CCRF-CEM) using aptamers modified gold nanowire arrays (AuNWs). The gold nanowires, showing tunable morphologies from relatively random pillar deposit to uniform arrays, were fabricated by electrochemical deposition using anodic aluminum oxide (AAO) as template. Upon simply modification with aptamers by Au-S chemistry, the uniform AuNWs exhibit higher specificity to target cells...
September 19, 2017: ACS Applied Materials & Interfaces
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