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https://www.readbyqxmd.com/read/28931648/targeting-epithelial-mesenchymal-plasticity-in-cancer-clinical-and-preclinical-advances-in-therapy-and-monitoring
#1
REVIEW
Sugandha Bhatia, James Monkman, Alan Kie Leong Toh, Shivashankar H Nagaraj, Erik W Thompson
The concept of epithelial-mesenchymal plasticity (EMP), which describes the dynamic flux within the spectrum of phenotypic states that invasive carcinoma cells may reside, is being increasingly recognised for its role in cancer progression and therapy resistance. The myriad of events that are able to induce EMP, as well as the more recently characterised control loops, results in dynamic transitions of cancerous epithelial cells to more mesenchymal-like phenotypes through an epithelial-mesenchymal transition (EMT), as well as the reverse transition from mesenchymal phenotypes to an epithelial one...
September 20, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28904889/challenges-and-unanswered-questions-for-the-next-decade-of-circulating-tumour-cell-research-in-lung-cancer
#2
REVIEW
Sumitra Mohan, Francesca Chemi, Ged Brady
Since blood borne circulating tumour cells (CTCs) initially shed from the primary tumour can seed and initiate metastasis at distant sites a better understanding of the biology of CTCs and their dissemination could provide valuable information that could guide therapeutic intervention and real time monitoring of disease progression. Although CTC enumeration has provided a reliable prognostic readout for a number of cancers, including lung cancer, the precise clinical utility of CTCs remains to be established...
August 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28904885/the-clinical-utility-of-circulating-tumour-cells-in-patients-with-small-cell-lung-cancer
#3
REVIEW
Victoria Foy, Fabiola Fernandez-Gutierrez, Corinne Faivre-Finn, Caroline Dive, Fiona Blackhall
Small cell lung cancer (SCLC) accounts for 15% of lung cancer diagnosed worldwide. It is aggressive and characterised by early metastatic spread with rapid development of chemo resistance such that less than 5% of patients diagnosed survive 5 years. Surgery is rarely performed and failure to identify new effective treatments has been attributed in a large part to lack of good quality tumour biopsies available for translational research. Liquid biopsies provide a minimally invasive alternative to traditional tumour biopsy...
August 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28904883/spotlight-on-circulating-tumour-cells
#4
Fiona Blackhall, Caroline Dive
No abstract text is available yet for this article.
August 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28900219/rapid-staining-of-circulating-tumor-cells-in-three-dimensional-microwell-dialysis-3d-%C3%AE-dialysis-chip
#5
Wanying Cho, Rangadhar Pradhan, Hsin Ying Chen, Yi-Hsuan Weng, Hsueh Yao Chu, Fan-Gang Tseng, Chien-Ping Lin, Jeng-Kai Jiang
The conventional techniques to detect circulating tumour cells (CTCs) are lengthy and the use of centrifugal forces in this technique may cause cell mortality. As the number of CTCs in patients is quite low, the present study aims towards a gentler diagnostic procedure so as not to lose too many CTCs during the sample preparation process. Hence, a Three-Dimensional Microwell dialysis (3D-μDialysis) chip was designed in this study to perform gentle fluorescence-removal process by using dialysis-type flow processes without centrifuging...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28886588/human-%C3%AE-defensin-3-inhibits-periodontitis-development-by-suppressing-inflammatory-responses-in-macrophages
#6
Di Cui, Jinglu Lyu, Houxuan Li, Lang Lei, Tianying Bian, Lili Li, Fuhua Yan
Human β-defensin 3 (hBD3) is a cationic peptide with immunomodulatory effects on both innate and acquired immune responses. Periodontitis, an inflammatory disease that extends deep into periodontal tissues, causes the loss of supporting structures around the tooth. The present study assessed the effects of hBD3 as a monotherapy for periodontitis in mice and explored its potential mechanism. In vivo, hBD3 inhibited the levels of tumour necrosis factor (TNF)-α, interleukin-6, and matrix metalloprotease-9 in periodontium exposed to Porphyromonas gingivalis (P...
September 5, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28873086/anti-mullerian-hormone-and-endometrial-cancer-a-multi-cohort-study
#7
Renée T Fortner, Helena Schock, Seungyoun Jung, Naomi E Allen, Alan A Arslan, Louise A Brinton, Brian L Egleston, Roni T Falk, Marc J Gunter, Kathy J Helzlsouer, Annika Idahl, Theron S Johnson, Rudolf Kaaks, Vittorio Krogh, Eva Lundin, Melissa A Merritt, Carmen Navarro, N Charlotte Onland-Moret, Domenico Palli, Xiao-Ou Shu, Patrick M Sluss, Paul N Staats, Antonia Trichopoulou, Elisabete Weiderpass, Anne Zeleniuch-Jacquotte, Wei Zheng, Joanne F Dorgan
BACKGROUND: The Mullerian ducts are the embryological precursors of the female reproductive tract, including the uterus; anti-Mullerian hormone (AMH) has a key role in the regulation of foetal sexual differentiation. Anti-Mullerian hormone inhibits endometrial tumour growth in experimental models by stimulating apoptosis and cell cycle arrest. To date, there are no prospective epidemiologic data on circulating AMH and endometrial cancer risk. METHODS: We investigated this association among women premenopausal at blood collection in a multicohort study including participants from eight studies located in the United States, Europe, and China...
September 5, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28856217/pcr-based-amplification-of-circulating-rnas-as-prognostic-and-predictive-biomarkers-focus-on-neuroblastoma
#8
Sam C Brownhill, Sue A Burchill
Metastatic disease is a major challenge for cancer cure, haematogenous spread and subsequent growth of tumour cells at distant sites being the cause of most cancer deaths. Molecular characterization and detection of the tumour cells responsible for haematogenous spread may increase understanding of the biology of metastasis, help improve patient management and allow evaluation of novel treatments to prevent and eradicate this disease. The bone marrow is a common site to which tumour cells metastasize, from which they may re-circulate to other organs with a favourable microenvironment for growth...
April 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28845132/cell-free-dna-in-non-small-cell-lung-cancer
#9
Vaida Gedvilaitė, Diana Schveigert, Saulius Cicėnas
Lung cancer is the leading cause of cancer-associated deaths worldwide. Surgery is the standard treatment for early-stage non-small cell lung cancer (NSCLC). Advances in the knowledge of the biology of non-small cell lung cancer have revealed molecular information used for systemic cancer therapy targeting metastatic disease, with an important impact on patients' overall survival (OS) and quality of life. However, a biopsy of overt metastases is an invasive procedure limited to certain locations and not easily acceptable in the clinic...
2017: Acta medica Lituanica
https://www.readbyqxmd.com/read/28843359/combination-osimertinib-and-gefitinib-in-c797s-and-t790m-egfr-mutated-non-small-cell-lung-cancer
#10
Surein Arulananda, Hongdo Do, Ashan Musafer, Paul Mitchell, Alexander Dobrovic, Thomas John
INTRODUCTION: Osimertinib, a third generation Epidermal Growth Factor Receptor (EGFR) tyrosine kinase inhibitor (TKI) has demonstrated efficacy in tumours harbouring the EGFR T790M resistance mutation. Inevitably, resistance to 3(rd) generation inhibitors result in disease progression, with the EGFR C797S mutation being one of several resistance pathways identified to date. Based on preclinical data, we report the first known case of a patient harbouring the T790M and C797S mutations in trans treated with combination gefitinib and osimertinib...
August 23, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28843267/screening-for-circulating-tumour-cells-allows-early-detection-of-cancer-and-monitoring-of-treatment-effectiveness-an-observational-study
#11
Karin Ried, Peter Eng, Avni Sali
Background: Circulating-Tumour-Cells (CTC) provide a blood biomarker for early carcinogenesis, cancer progression and treatment effectiveness. An increase in CTCs is associated with cancer progression, a CTC decrease with cancer containment or remission. Several technologies have been developed to identify CTC, including the validated Isolation-by-Size-of-Epithelial-Tumour (ISET, Rarecells) technology, combining blood filtration and microscopy using standard histo-pathological criteria. Methods: This observational study compared CTC count to cancer status and cancer risk, by monitoring treatment effectiveness in cancer patients and by screening for CTC in asymptomatic patients with risk factors, including family history of cancer...
August 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28841569/results-of-the-first-external-quality-assessment-scheme-eqa-for-isolation-and-analysis-of-circulating-tumour-dna-ctdna
#12
Verena Haselmann, Parviz Ahmad-Nejad, Wolf J Geilenkeuser, Angelika Duda, Merle Gabor, Romy Eichner, Simon Patton, Michael Neumaier
BACKGROUND: Circulating tumour DNA (ctDNA) is considered to have a high potential for future management of malignancies. This pilot external quality assessment (EQA) scheme aimed to address issues of analytical quality in this new area of laboratory diagnostics. METHODS: The EQA scheme consisted of three 2-mL EDTA-plasma samples spiked with fragmented genomic DNA with a mutant allele frequency ranging from 0% to 10% dedicated to the analysis of nine known sequence variations in KRAS codon 12/13 and of BRAF V600E...
August 25, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28837972/excessive-catecholamine-secretion-and-the-activation-of-the-renin-angiotensin-aldosterone-system-in-patients-with-pheochromocytoma-a-single-center-experience-and-overview-of-the-literature
#13
Matthias Haase, Till Dringenberg, Stephanie Allelein, Holger S Willenberg, Matthias Schott
Catecholamines stimulate renin-secretion in the juxtaglomerular cells of the kidney and a number of case reports suggest an association between pheochromocytoma and activation of the RAAS. Therefore, it could be asked whether patients suffering from pheochromocytoma with high concentrations of circulating catecholamines present with oversecretion of renin and aldosterone. We identified twelve patients with excessive catecholamine secretion due to pheochromocytoma and compared them to a group of twelve patients with essential hypertension (EH) with regard to the activation of the renin-angiotensin-aldosterone-system (RAAS)...
August 24, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28827745/establishing-pnb-qpcr-for-quantifying-minimal-ctdna-concentrations-during-tumour-resection
#14
T Ehlert, S Tug, A Brahmer, V Neef, F Heid, C Werner, B Jansen-Winkeln, W Kneist, H Lang, I Gockel, P Simon
The analysis of blood plasma or serum as a non-invasive alternative to tissue biopsies is a much-pursued goal in cancer research. Various methods and approaches have been presented to determine a patient's tumour status, chances of survival, and response to therapy from serum or plasma samples. We established PNB-qPCR (Pooled, Nested, WT-Blocking qPCR), a highly specific nested qPCR with various modifications to detect and quantify minute amounts of circulating tumour DNA (ctDNA) from very limited blood plasma samples...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28815003/glioblastoma-stem-like-cells-secrete-the-pro-angiogenic-vegf-a-factor-in-extracellular-vesicles
#15
Lucas Treps, Raul Perret, Sébastien Edmond, Damien Ricard, Julie Gavard
Glioblastoma multiforme (GBM) are mortifying brain tumours that contain a subpopulation of tumour cells with stem-like properties, termed glioblastoma stem-like cells (GSCs). GSCs largely contribute to tumour initiation, propagation and resistance to current anti-cancer therapies. GSCs are situated in perivascular niches, closely associated with brain microvascular endothelial cells, thereby involved in bidirectional molecular and cellular interactions. Moreover, extracellular vesicles are suspected to carry essential information that can adapt the microenvironment to the tumour's needs, including tumour-induced angiogenesis...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28795252/ipet-study-an-flt-pet-window-study-to-assess-the-activity-of-the-steroid-sulfatase-inhibitor-irosustat-in-early-breast-cancer
#16
Carlo Palmieri, Richard Szydlo, Marie Miller, Laura Barker, Neva H Patel, Hironobu Sasano, Tara Barwick, Henry Tam, Dimitri Hadjiminas, Jasmin Lee, Abeer Shaaban, Hanna Nicholas, R Charles Coombes, Laura M Kenny
BACKGROUND: Steroid sulfatase (STS) is involved in oestrogen biosynthesis and irosustat is a first generation, irreversible steroid sulfatase inhibitor. A pre-surgical window-of-opportunity study with irosustat was undertaken in estrogen receptor-positive (ER+) breast cancer to assess the effect of irosustat on tumour cell proliferation as measured by 3'-deoxy-3'-[18F] fluorothymidine uptake measured by PET scanning (FLT-PET) and Ki67. METHODS: Postmenopausal women with untreated ER+ early breast cancer were recruited, and imaged with FLT-PET at baseline and after at least 2 weeks treatment with irosustat, 40 mg once daily orally...
August 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28790338/statistical-analysis-of-mutant-allele-frequency-level-of-circulating-cell-free-dna-and-blood-cells-in-healthy-individuals
#17
Ligang Xia, Zhoufang Li, Bo Zhou, Geng Tian, Lidong Zeng, Hongyu Dai, Xiaohua Li, Chaoyu Liu, Shixin Lu, Feiyue Xu, Xiaonian Tu, Fang Deng, Yuancai Xie, Weiren Huang, Jiankui He
Cell-free DNA (cfDNA) in plasma has emerged as a potential important biomarker in clinical diagnostics, particularly in cancer. However, somatic mutations are also commonly found in healthy individuals, which interfere with the effectiveness for cancer diagnostics. This study examined the background somatic mutations in white blood cells (WBC) and cfDNA in healthy controls based on sequencing data from 821 non-cancer individuals and several cancer samples with the aim of understanding the patterns of mutations detected in cfDNA...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28775319/circulating-tumour-cell-release-after-cement-augmentation-of-vertebral-metastases
#18
Malte Mohme, Sabine Riethdorf, Marc Dreimann, Stefan Werner, Cecile L Maire, Simon A Joosse, Frederic Bludau, Volkmar Mueller, Rui P L Neves, Nikolas H Stoecklein, Katrin Lamszus, Manfred Westphal, Klaus Pantel, Harriet Wikman, Sven O Eicker
Cement augmentation via percutaneous vertebroplasty or kyphoplasty for treatment of spinal metastasis is a well-established treatment option. We assessed whether elevated intrametastatic pressure during cement augmentation results in an increased dissemination of tumour cells into the vascular circulation. We prospectively collected blood from patients with osteolytic spinal column metastases and analysed the prevalence of circulating tumour cells (CTCs) at three time-points: preoperatively, 20 minutes after cement augmentation, and 3-5 days postoperatively...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28772284/diagnostic-value-of-ca19-9-circulating-tumour-dna-and-circulating-tumour-cells-in-patients-with-solid-pancreatic-tumours
#19
David Sefrioui, France Blanchard, Emmanuel Toure, Paul Basile, Ludivine Beaussire, Claire Dolfus, Anne Perdrix, Marianne Paresy, Michel Antonietti, Isabelle Iwanicki-Caron, Raied Alhameedi, Stephane Lecleire, Alice Gangloff, Lilian Schwarz, Florian Clatot, Jean-Jacques Tuech, Thierry Frébourg, Fabrice Jardin, Jean-Christophe Sabourin, Nasrin Sarafan-Vasseur, Pierre Michel, Frédéric Di Fiore
BACKGROUND: The direct comparison of CA19.9, circulating tumour cells (CTCs) and circulating tumour DNA (ctDNA) using endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) has never been performed for the diagnosis of solid pancreatic tumours (SPTs). METHODS: We included 68 patients with a SPT referred for EUS-FNA. CTCs were analysed using size-based platform and ctDNA using digital PCR. The sensitivity, specificity, negative and positive predictive values were evaluated for each marker and their combination...
August 3, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28753792/interrogating-metastatic-prostate-cancer-treatment-switch-decisions-a-multi-institutional-survey
#20
David Lorente, Praful Ravi, Niven Mehra, Carmel Pezaro, Aurelius Omlin, Alexa Gilman, Miguel Miranda, Pasquale Rescigno, Michael Kolinsky, Nuria Porta, Diletta Bianchini, Nina Tunariu, Raquel Perez, Joaquin Mateo, Heather Payne, Leon Terstappen, Maarten IJzerman, Emma Hall, Johann de Bono
BACKGROUND: Evaluation of responses to treatment for metastatic castration-resistant prostate cancer (mCRPC) remains challenging. Consensus criteria based on prostate-specific antigen (PSA) and clinical and radiologic biomarkers are inconsistently utilized. Circulating tumor cell (CTC) counts can inform prognosis and response, but are not routinely used. OBJECTIVE: To evaluate the use of biomarkers and trends in clinical decision-making in current mCRPC treatment...
October 10, 2016: European Urology Focus
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