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https://www.readbyqxmd.com/read/29053456/localized-electroporation-with-dielectrophoretic-field-flow-fractionation-towards-removal-of-circulating-tumour-cells-from-human-blood
#1
Steven Kinio, James K Mills
This paper presents the design and experimental performance of a microelectrode-based device to selectively lyse cells in a flow in a microfluidic channel. Localized cell lysis is achieved by utilizing "irreversible electroporation", in which cells are exposed to high magnitude electric pulses. Localized cell lysis in a flow has research applications and may allow for removal of harmful cells such as circulating tumor cells from blood. Due to the dependence of this technique on the magnitude of the applied electric field, lethal electric field regions can be localized in the channel by calibration of the applied voltage...
October 17, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/29053157/current-applications-of-multiparameter-flow-cytometry-in-plasma-cell-disorders
#2
REVIEW
T Jelinek, R Bezdekova, M Zatopkova, L Burgos, M Simicek, T Sevcikova, B Paiva, R Hajek
Multiparameter flow cytometry (MFC) has become standard in the management of patients with plasma cell (PC) dyscrasias, and could be considered mandatory in specific areas of routine clinical practice. It plays a significant role during the differential diagnostic work-up because of its fast and conclusive readout of PC clonality, and simultaneously provides prognostic information in most monoclonal gammopathies. Recent advances in the treatment and outcomes of multiple myeloma led to the implementation of new response criteria, including minimal residual disease (MRD) status as one of the most relevant clinical endpoints with the potential to act as surrogate for survival...
October 20, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/29053069/detection-of-glioblastoma-in-biofluids
#3
Javier M Figueroa, Bob S Carter
The detection of glioblastoma (GBM) in biofluids offers potential advantages over existing paradigms for the diagnosis and therapeutic monitoring of glial tumors. Biofluid-based detection of GBM focuses on detecting tumor-specific biomarkers in the blood and CSF. Current clinical research concentrates on studying 3 distinct tumor-related elements: extracellular macromolecules, extracellular vesicles, and circulating tumor cells. Investigations into these 3 biological classifications span the range of locales for tumor-specific biomarker discovery, and combined, have the potential to significantly impact GBM diagnosis, monitoring for treatment response, and surveillance for recurrence...
October 20, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29052674/egfr-targeting-plga-peg-nanoparticles-as-a-curcumin-delivery-system-for-breast-cancer-therapy
#4
Hua Jin, Jiang Pi, Yue Zhao, Jinhuan Jiang, Ting Li, Xueyi Zeng, Peihui Yang, Colin E Evans, Jiye Cai
Poor bioavailability and non-specificity of chemotherapeutic agents are major challenges in breast cancer treatment. Antibodies and small molecules that block cell signaling pathways have shown promise in the clinic, but their application is also limited by the high costs and treatment dosages required. Novel therapies that aim to rapidly and specifically target malignant cells with long-lasting impact in the tumor microenvironment may ultimately improve clinical outcome in cancer patients. Here, we demonstrate that epidermal growth factor receptor (EGFR)-targeting GE11 peptides conjugated with PEGylated polylactic-co-glycolic acid (PLGA) nanoparticles can be used to effectively deliver an anti-cancer agent, curcumin, into EGFR-expressing MCF-7 cells in vitro and in vivo...
October 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/29051388/a-conduit-to-metastasis-circulating-tumor-cell-biology
#5
REVIEW
Douglas S Micalizzi, Shyamala Maheswaran, Daniel A Haber
Advances in the enrichment and analysis of rare cells from the bloodstream have allowed for detection and characterization of circulating tumor cells (CTCs) from patients with cancer. The analysis of CTCs has provided significant insight into the metastatic process. Studies on the biology of CTCs have begun to elucidate the molecular mechanisms of CTC generation, intravasation, survival, interactions with components of the blood, extravasation, and colonization of distant organs. Additionally, the study of CTCs has exposed dramatic intrapatient and interpatient heterogeneity and their evolution over time...
September 15, 2017: Genes & Development
https://www.readbyqxmd.com/read/29050357/oncomir-17-5p-alarm-signal-in-cancer
#6
REVIEW
Madhusudhan Reddy Bobbili, Robert M Mader, Johannes Grillari, Hanna Dellago
Soon after microRNAs entered the stage as novel regulators of gene expression, they were found to regulate -and to be regulated by- the development, progression and aggressiveness of virtually all human types of cancer. Therefore, miRNAs in general harbor a huge potential as diagnostic and prognostic markers as well as potential therapeutic targets in cancer. The miR-17-92 cluster was found to be overexpressed in many human cancers and to promote unrestrained cell growth, and has therefore been termed onco-miR-1...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050295/a-comprehensive-study-of-circulating-tumour-cells-at-the-moment-of-prostate-cancer-diagnosis-biological-and-clinical-implications-of-egfr-ar-and-snps
#7
Ignacio Puche-Sanz, María J Alvarez-Cubero, Manrique Pascual-Geler, Alba Rodríguez-Martínez, Miguel Delgado-Rodríguez, José L García-Puche, José Expósito, Inmaculada Robles-Fernández, Carmen Entrala-Bernal, José A Lorente, José M Cózar-Olmo, María J Serrano
Circulating tumor cells (CTCs) have been recently accepted as prognostic markers in metastatic prostate cancer (PCa). However, very few studies have analyzed their role in early-stage PCa. The aim of this research is to study the value of CTCs at the moment of PCa diagnosis and to identify different subpopulations of CTCs. Patients with PSA value > 4 ng/ml and clinical suspicion of PCa were included. Samples were collected immediately before prostatic biopsy. CTCs were isolated by immunomagnetic technique using a multi-CK specific antibody...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050178/-detection-and-clinical-significance-of-circulating-tumor-cells-in-patients-with-colorectal-carcinoma
#8
D Wang, Y C Yang, H W Yao, L Jin, J Wang, Z G Bai, Z T Zhang
Objective: To detect circulating tumor cells (CTC) in patients with colorectal carcinoma and to evaluate the relationship among CTC, clinic-pathological characteristics and prognosis of colorectal carcinoma. Methods: Peripheral blood samples were obtained from 109 patients with colorectal carcinoma in Department of General Surgery, Beijing Friendship Hospital, Capital Medical University from April 2014 to October 2016. There were 60 male and 49 female patients, aging from 33 to 86 years with a mean age of (65±10) years...
October 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29045828/prolonged-ikk%C3%AE-inhibition-improves-ongoing-ctl-antitumor-responses-by-incapacitating-regulatory-t-cells
#9
Christoph Heuser, Janine Gotot, Eveline Christina Piotrowski, Marie-Sophie Philipp, Christina Johanna Felicia Courrèges, Martin Sylvester Otte, Linlin Guo, Jonathan Leo Schmid-Burgk, Veit Hornung, Annkristin Heine, Percy Alexander Knolle, Natalio Garbi, Edgar Serfling, César Evaristo, Friedrich Thaiss, Christian Kurts
Regulatory T cells (Tregs) prevent autoimmunity but limit antitumor immunity. The canonical NF-κB signaling pathway both activates immunity and promotes thymic Treg development. Here, we report that mature Tregs continue to require NF-κB signaling through IκB-kinase β (IKKβ) after thymic egress. Mice lacking IKKβ in mature Tregs developed scurfy-like immunopathology due to death of peripheral FoxP3(+) Tregs. Also, pharmacological IKKβ inhibition reduced Treg numbers in the circulation by ∼50% and downregulated FoxP3 and CD25 expression and STAT5 phosphorylation...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045824/enhanced-doxorubicin-delivery-to-hepatocellular-carcinoma-cells-via-cd147-antibody-conjugated-immunoliposomes
#10
Jian Wang, Zhitao Wu, Guoyu Pan, Junsheng Ni, Fangyuan Xie, Beige Jiang, Lixin Wei, Jie Gao, Weiping Zhou
HAb18G/CD147, an important marker in the progression of hepatocellular carcinoma (HCC), is highly expressed on the surface of HCC cells. To increase the therapeutic efficacy of Doxil (PEGylated liposomal doxorubicin) against HCC, we constructed CD147-targeted doxorubicin-loaded immunoliposomes (Anti-CD147 ILs-DOX) by conjugating F(ab')2 of a CD147-specific monoclonal antibody to DSPE-PEG-MAL, and then inserted the antibody-conjugated polymer to Doxil. Anti-CD147 ILs-DOX delivered DOX to CD147-overexpressing HCC cells specifically and efficiently in vitro and in vivo, resulting in enhanced therapeutic effects than non-targeted controls...
October 15, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29045505/surfaceome-profiling-enables-isolation-of-cancer-specific-exosomal-cargo-in-liquid-biopsies-from-pancreatic-cancer-patients
#11
J Castillo, V Bernard, F A San Lucas, K Allenson, M Capello, D U Kim, P Gascoyne, F C Mulu, B M Stephens, J Huang, H Wang, A A Momin, R O Jacamo, M Katz, R Wolff, M Javle, G Varadhachary, I I Wistuba, S Hanash, A Maitra, H Alvarez
Background: Detection of circulating tumor DNA (ctDNA) can be limited due to their relative scarcity in circulation, particularly while patients are actively undergoing therapy. Exosomes provide a vehicle through which cancer-specific material can be enriched from the compendium of circulating non-neoplastic tissue-derived nucleic acids. We performed a comprehensive profiling of the pancreatic ductal adenocarcinoma (PDAC) exosomal "surfaceome" in order to identify surface proteins that will render liquid biopsies amenable to cancer-derived exosome enrichment for downstream molecular profiling...
September 25, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045502/long-term-toxicity-of-cisplatin-in-germ-cell-tumor-survivors
#12
M Chovanec, M Abu Zaid, N Hanna, N El-Kouri, L H Einhorn, C Albany
Context: Testicular germ cell tumors (GCT) are highly curable. A multidisciplinary approach, including cisplatin-based chemotherapy has resulted in cure in the majority of patients with GCT. Thus, the life expectancy of survivors will extend to many decades post diagnosis. Late treatment toxicities associated with cisplatin-based chemotherapy may impact their future health. Objective: To systematically evaluate evidence regarding the long-term toxicity of cisplatin in GCT survivors...
July 14, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29044505/diagnostic-pathology-of-early-systemic-cancer-erbb2-gene-amplification-in-single-disseminated-cancer-cells-determines-patient-survival-in-operable-esophageal-cancer
#13
Martin Hoffmann, Sophie Pasch, Thomas Schamberger, Matthias Maneck, Birte Möhlendick, Sarah Schumacher, Gero Brockhoff, Wolfram Trudo Knoefel, Jakob Izbicki, Bernhard Polzer, Nikolas H Stoecklein, Christoph A Klein
Early metastatic dissemination and evolution of disseminated cancer cells (DCCs) outside the primary tumor is one reason for the failure of adjuvant therapies because it generates molecular geno- and phenotypes different from primary tumors which still underlie therapy decisions. Since ERBB2 amplification in esophageal DCCs but not in primary tumor cells predict outcome, we aimed to establish an assay with diagnostic reliability for single DCCs or circulating tumor cells (CTCs). For this we evaluated copy number alterations of more than 600 single DCCs from multiple cancer types to define reference regions suitable for quantification of target regions, such as ERBB2...
October 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29040918/tumor-cryoablation-in-combination-with-natural-killer-cells-therapy-and-herceptin-in-patients-with-her2-overexpressing-recurrent-breast-cancer
#14
Shuzhen Liang, Lizhi Niu, Kecheng Xu, Xiaohua Wang, Yingqing Liang, Mingjie Zhang, Jibing Chen, Mao Lin
In this study, we investigated the clinical benefits of a combination of tumor cryoablation with natural killer (NK) cells therapy and Herceptin for human epidermal growth factor (HER) 2-overexpressing recurrent breast cancer. From May 2015 to May 2016, 48 patients who met the enrollment criteria were assigned to three groups (n=16): cryoablation group (group I), cryoablation-NK cells therapy group (group II) and cryoablation-NK cells therapy-Herceptin group (group III). Safety and short-term effects were evaluated...
October 13, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29038785/biological-function-of-microrna193a-3p-in-health-and-disease
#15
REVIEW
Ilaria Grossi, Alessandro Salvi, Edoardo Abeni, Eleonora Marchina, Giuseppina De Petro
MicroRNAs (miRNAs) are a class of small noncoding RNAs that act mainly as negative regulators of gene expression. Several studies demonstrated that miRNAs take part in numerous biological processes, such as proliferation, apoptosis, and migration. The dysregulation of miRNAs has been frequently observed in different types of disease, including cancer. Here, we provide a comprehensive review on the human miR-193a-3p by considering its role in both physiological and pathological contexts. Different mechanisms involved in regulating miR-193a-3p expression have been reported, including epigenetic modifications and transcription factors...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/29038587/cell-surface-major-vault-protein-promotes-cancer-progression-through-harboring-mesenchymal-and-intermediate-circulating-tumor-cells-in-hepatocellular-carcinomas
#16
Hyun Min Lee, Jae Won Joh, Se-Ri Seo, Won-Tae Kim, Min Kyu Kim, Hong Seo Choi, So Young Kim, Young-Joo Jang, Dong Hyun Sinn, Gyu Seong Choi, Jong Man Kim, Choon Hyuck David Kwon, Hee Jin Chang, Dae Shick Kim, Chun Jeih Ryu
Circulating tumor cells (CTCs) play a major role in the metastasis and recurrence of hepatocellular carcinoma (HCC). Here, we found that major vault protein (MVP) is expressed on the surface of HCC cells and further induced under stressful environments. MVP knockdown reduces cell proliferation and induces apoptosis in HCC cells. Treatment of HCC cells with anti-MVP antibody (α-MVP) recognizing cell-surface MVP (csMVP) inhibits cell proliferation, migration, and invasion. csMVP-positive HCC cells have a higher clonogenic survival than csMVP-negative HCC cells, and treatment of HCC cells with α-MVP inhibits clonogenic survival, suggesting that csMVP contributes to HCC cell survival, migration, and invasion...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036567/extra-pituitary-expressed-fsh-is-it-physiologically-important
#17
Anushka Jayaraman, T Rajendra Kumar
Pituitary gonadotropes synthesize and secrete follicle-stimulating hormone (FSH). FSH is a heterodimer that consists of an α-and a β-subunit. The α - subunit is common to other pituitary and placental glycoprotein hormones and the β-subunit is the hormone/receptor specific subunit. Although the pituitary is the main tissue that accounts for circulating hormone, previous and recent reports indicate extra-pituitary sources of FSH production including mouse gonads, human stomach, prostate, umbilical cord vein endothelial cells, uterine myometrium, placenta and chicken abdominal adipose tissue...
September 20, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29035737/rethinking-liquid-biopsy-microfluidic-assays-for-mobile-tumor-cells-in-human-body-fluids
#18
REVIEW
Kuang Hong Neoh, Ayon Ahmed Hassan, Anqi Chen, Yukun Sun, Peng Liu, Kai-Feng Xu, Alice S T Wong, Ray P S Han
Traditionally, liquid biopsy is a blood test involving the harvesting of tumor materials from peripheral blood. Tumor cells from non-blood body fluids have always been clinically available in cytological examinations but limited for use in differential diagnosis due to the low sensitivity of conventional cytopathology. With the recent significant progress in microfluidic and downstream molecular technologies, liquid biopsies have now evolved to include harvesting tumor cells and DNA fragments in all kinds of non-blood body fluids...
October 3, 2017: Biomaterials
https://www.readbyqxmd.com/read/29035458/concordance-of-mutation-detection-in-circulating-tumor-dna-in-early-clinical-trials-using-different-blood-collection-protocols
#19
Lise B Ahlborn, Mette Madsen, Lars Jonson, Finn C Nielsen, Ulrik Lassen, Christina W Yde, Morten Mau-Sorensen
BACKGROUND: Small fragments of tumor DNA can be found in the circulation of cancer patients, providing a noninvasive access to tumor material (liquid biopsy). Analysis of circulating tumor DNA (ctDNA) has been used for diagnosis, treatment decisions, and detection of therapy resistance, including in patients with tumors inaccessible for biopsy, making ctDNA an important alternative source of tumor material. Immediate separation of plasma is widely used in standard isolation of cell-free DNA to ensure high quality plasma DNA...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29035450/imbalance-between-matrix-metalloproteinases-and-tissue-inhibitors-of-metalloproteinases-promotes-invasion-and-metastasis-of-head-and-neck-squamous-cell-carcinoma
#20
Adina E Stanciu, Adina Zamfir-Chiru-Anton, Marcel M Stanciu, Cristian R Popescu, Dan C Gheorghe
BACKGROUND: The balance between collagenolysis and its inhibition is critical during extracellular matrix remodeling in head and neck squamous cell carcinoma (HNSCC). An imbalance between matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) plays a critical role in the development of tumor cell invasion and metastasis. The purpose of the study was to determine MMP-9/TIMP-1 and MMP-2/TIMP-2 ratios in the sera of patients with HNSCC in relation to clinicopathological parameters...
October 1, 2017: Clinical Laboratory
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