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tumour evolution

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https://www.readbyqxmd.com/read/28798486/tumour-evolution-metastasis-takes-a-different-route
#1
Anna Dart
No abstract text is available yet for this article.
August 11, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28770103/subclonal-analysis-in-a-lobular-breast-cancer-with-classical-and-solid-growth-pattern-mimicking-a-solid-papillary-carcinoma
#2
Matthias Christgen, Stephan Bartels, Jana Lisa van Luttikhuizen, Maximilian Schieck, Stefanie Pertschy, Sudip Kundu, Ulrich Lehmann, Bjoern Sander, Enrico Pelz, Florian Länger, Brigitte Schlegelberger, Doris Steinemann, Hans Kreipe
Recently, a new variant of invasive lobular breast cancer (ILBC) with solid-papillary-like growth pattern has been described. We present a case of ILBC with solid-papillary-like growth pattern in the main tumour mass and classical invasive lobular growth pattern in adjacent satellite foci. The two tumour components were subjected to comprehensive molecular analyses. Both components were ER/PR-positive, HER2-negative, and showed a complete loss of E-cadherin and beta-catenin protein expression, as determined by immunohistochemistry...
July 2017: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/28765177/massive-juvenile-nasopharyngeal-angiofibroma-ode-to-the-open-surgical-approach
#3
Ravi Meher, Nikhil Arora, Eishaan Kamta Bhargava, Ruchika Juneja
The management of juvenile nasopharyngeal angiofibroma has undergone a significant evolution, with more surgeons moving towards the minimal invasive endoscopic approaches. Although considered the standard of care by most, an endoscopic approach may not be sufficient for extensive tumours, as exemplified by the current case of a young man presenting with the largest juvenile nasopharyngeal angiofibroma described in English literature until the present that was eventually excised via an anterior external approach...
August 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28743252/quantification-of-tumour-evolution-and-heterogeneity-via-bayesian-epiallele-detection
#4
James E Barrett, Andrew Feber, Javier Herrero, Miljana Tanic, Gareth A Wilson, Charles Swanton, Stephan Beck
BACKGROUND: Epigenetic heterogeneity within a tumour can play an important role in tumour evolution and the emergence of resistance to treatment. It is increasingly recognised that the study of DNA methylation (DNAm) patterns along the genome - so-called 'epialleles' - offers greater insight into epigenetic dynamics than conventional analyses which examine DNAm marks individually. RESULTS: We have developed a Bayesian model to infer which epialleles are present in multiple regions of the same tumour...
July 25, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28723516/the-molecular-evolution-of-castration-resistant-prostate-cancer
#5
REVIEW
Yvonne Ceder, Anders Bjartell, Zoran Culig, Mark A Rubin, Scott Tomlins, Tapio Visakorpi
CONTEXT: Androgen deprivation therapy (ADT) is the backbone of treatment for advanced prostate cancer. However, castration-resistant prostate cancer (CRPC) nearly invariably develops through a range of different molecular mechanisms accompanied by progression to a more aggressive phenotype. OBJECTIVE: To understand the key molecular mechanisms leading to CRPC and the functional implications of this progression. Understanding molecular evolutionary mechanisms in CRPC is essential for the development of novel curative therapeutic approaches...
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28720366/the-evolving-role-of-retrograde-intrarenal-surgery-in-the-treatment-of-urolithiasis
#6
REVIEW
Francesco Sanguedolce, Giorgio Bozzini, Ben Chew, Panagiotis Kallidonis, Jean de la Rosette
CONTEXT: Retrograde intrarenal surgery has gained substantial popularity worldwide thanks to continuous improvements in technology and techniques, and is now considered one of the first-line treatment options for active removal of renal stones. OBJECTIVE: To provide a comprehensive synthesis of the main evidences in literature on the current management of kidney stones by means of retrograde intrarenal surgery (RIRS). EVIDENCE ACQUISITION: A review of literature has been conducted using search string "retrograde intrarenal surgery OR flexible ureteroscop* OR ureterorenoscop*", without any language restriction; PubMed, Embase, and Scopus databases were searched in November 2016...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28718446/cancer-an-insurgency-of-clones
#7
David Gisselsson, Robert Egnell
Oncological therapy resembles a military force that eliminates the central power of a country (dominant clone of a cancer) to create a vacuum where insurgents (subclones) thrive and instigate rebellion (relapse). We suggest that military counterinsurgency doctrine can inspire a discussion of cancer that uniquely embraces both cancer cell evolution and tumour microenvironment.
February 2017: Trends in Cancer
https://www.readbyqxmd.com/read/28717136/association-of-plasma-and-urinary-mutant-dna-with-clinical-outcomes-in-muscle-invasive-bladder-cancer
#8
K M Patel, K E van der Vos, C G Smith, F Mouliere, D Tsui, J Morris, D Chandrananda, F Marass, D van den Broek, D E Neal, V J Gnanapragasam, T Forshew, B W van Rhijn, C E Massie, N Rosenfeld, M S van der Heijden
Muscle Invasive Bladder Cancer (MIBC) has a poor prognosis. Whilst patients can achieve a 6% improvement in overall survival with Neo-Adjuvant Chemotherapy (NAC), many do not respond. Body fluid mutant DNA (mutDNA) may allow non-invasive identification of treatment failure. We collected 248 liquid biopsy samples including plasma, cell pellet (UCP) and supernatant (USN) from spun urine, from 17 patients undergoing NAC. We assessed single nucleotide variants and copy number alterations in mutDNA using Tagged-Amplicon- and shallow Whole Genome- Sequencing...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716075/the-role-of-tumour-heterogeneity-and-clonal-cooperativity-in-metastasis-immune-evasion-and-clinical-outcome
#9
REVIEW
Deborah R Caswell, Charles Swanton
BACKGROUND: The advent of rapid and inexpensive sequencing technology allows scientists to decipher heterogeneity within primary tumours, between primary and metastatic sites, and between metastases. Charting the evolutionary history of individual tumours has revealed drivers of tumour heterogeneity and highlighted its impact on therapeutic outcomes. DISCUSSION: Scientists are using improved sequencing technologies to characterise and address the challenge of tumour heterogeneity, which is a major cause of resistance to therapy and relapse...
July 18, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28715775/evolution-of-anti-her2-therapies-for-cancer-treatment
#10
REVIEW
Sagun Parakh, Hui K Gan, Adam C Parslow, Ingrid J G Burvenich, Antony W Burgess, Andrew M Scott
The development of HER2-directed monoclonal antibodies and tyrosine kinase inhibitors have provided benefits to cancer patients, as well as produced many insights into the biology of the ErbB receptor family. Current therapies based on ErbB family members have resulted in improved overall survival with associated improvements in quality of life for the cancer patients that respond to treatment. Compared to monotherapy using either two antibodies to block the HER2 receptor blockade or combinatorial approaches with HER2 antibodies and standard therapies has provided additional benefits...
July 6, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28696210/role-of-chromosomal-instability-in-cancer-progression
#11
Sarah E McClelland
Cancer cells often display chromosomal instability (CIN), a defect that involves loss or rearrangement of the cell's genetic material - chromosomes - during cell division (Lengauer, et al. 1998; McGranahan, et al. 2012). This process results in the generation of aneuploidy, a deviation from the haploid number of chromosomes, and structural alterations of chromosomes in over 90% of solid tumours and many haematological cancers (Mitelman). This trait is unique to cancer cells as normal cells in the body generally strictly maintain the correct number and structure of chromosomes...
July 10, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28687023/adrenalectomy-for-incidentaloma-lessons-learned-from-a-single-centre-series-of-274-patients
#12
Sébastien Gaujoux, Adeline Aimé, Guillaume Assié, Roberto Ciuni, Stéphane Bonnet, Florence Tenenbaum, Jérome Bertherat, Bertrand Dousset
BACKGROUND: Adrenal incidentalomas are increasingly diagnosed and include a wide spectrum of lesions from benign adenomas to secreting or malignant lesions. The aim of the present study is to report a large single-institution experience of patients undergoing surgery for adrenal incidentaloma with particular attention to their diagnosis and post-operative course and the evolution of surgical practice over time. METHODS: From 1993 to 2013, 274 patients underwent adrenalectomy for incidentaloma...
July 7, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28687008/association-of-breast-carcinoma-growth-with-a-non-canonical-axis-of-ifn%C3%AE-ido1-tsp1
#13
Bruno Lopes-Bastos, Liang Jin, Fiona Ruge, Sioned Owen, Andrew Sanders, Christopher Cogle, John Chester, Wen G Jiang, Jun Cai
Reciprocal interactions between cancers and the surrounding microenvironment have an important role in tumour evolution. In this study, our data suggested that through thrombospondin 1 (TSP1), tumour-associated microvessel provides a dormant niche to sustain inactive status of breast invasive ductal carcinoma (IDC) cells. TSP1 levels in the tumour stroma were negatively correlated with vascular indoleamine 2,3-dioxygenase 1 (IDO1) in IDC tissues. IDO1 is an intracellular enzyme initiating the first and rate-limited step of tryptophan breakdown...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28680293/molecular-progression-in-unusual-recurrent-non-pediatric-intracranial-clear-cell-meningioma
#14
B Domingo-Arrué, R Gil-Benso, J Megías, L Navarro, T San-Miguel, L Muñoz-Hidalgo, C López-Ginés, M Cerdá-Nicolás
We report a case of a recurrent clear cell meningioma (ccm) in the frontal lobe of the brain of a 67-year-old man. The patient developed three recurrences: at 3, 10, and 12 years after his initial surgery. Histopathology observations revealed a grade 2 ccm with positivity for vimentin and epithelial membrane antigen. Expression of E-cadherin was positive only in the primary tumour and in the first available recurrence. Fluorescence in situ hybridization analyses demonstrated 1p and 14q deletions within the last recurrence...
June 2017: Current Oncology
https://www.readbyqxmd.com/read/28673566/cancer-is-an-adaptation-that-selects-in-animals-against-energy-dissipation
#15
Anthonie W J Muller
As cancer usually follows reproduction, it is generally assumed that cancer does not select. Graham has however argued that juvenile cancer, which precedes reproduction, could during evolution have implemented a "cancer selection" that resulted in novel traits that suppress this juvenile cancer; an example is protection against UV sunlight-induced cancer, required for the emergence of terrestrial animals from the sea. We modify the cancer selection mechanism to the posited "cancer adaptation" mechanism, in which juvenile mortality is enhanced through the diminished care received by juveniles from their (grand) parents when these suffer from cancer in old age...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28669851/differential-effect-of-quercetin-on-cisplatin-induced-toxicity-in-kidney-and-tumor-tissues
#16
Penélope D Sánchez-González, Francisco J López-Hernández, Montserrat Dueñas, Marta Prieto, Elsa Sánchez-López, Jürgen Thomale, Marta Ruiz-Ortega, José M López-Novoa, Ana I Morales
Strategies to minimize the nephrotoxicity of platinated antineoplastics without affecting its antitumour efficacy are strongly necessary to improve the pharmacotoxicological profile of these drugs. The natural flavonoid quercetin has been shown to afford nephroprotection without affecting cisplatin antitumour effect. The purpose of the present study has been to assess the differential mechanisms of action of cisplatin and quercetin on kidney and tumour tissues that could explain these effects. Wistar rats bearing subcutaneous tumours were treated with cisplatin and quercetin (and the appropriate controls)...
September 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28651004/a-human-endogenous-retrovirus-derived-gene-that-can-contribute-to-oncogenesis-by-activating-the-erk-pathway-and-inducing-migration-and-invasion
#17
Cécile Lemaître, Jhen Tsang, Caroline Bireau, Thierry Heidmann, Marie Dewannieux
Endogenous retroviruses are cellular genes of retroviral origin captured by their host during the course of evolution and represent around 8% of the human genome. Although most are defective and transcriptionally silenced, some are still able to generate retroviral-like particles and proteins. Among these, the HERV-K(HML2) family is remarkable since its members have amplified relatively recently and many of them still have full length coding genes. Furthermore, they are induced in cancers, especially in melanoma, breast cancer and germ cell tumours, where viral particles, as well as the envelope protein (Env), can be detected...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28649372/the-use-of-high-frequency-ventilation-during-general-anaesthesia-an-update
#18
REVIEW
Karolina Galmén, Piotr Harbut, Jacob Freedman, Jan G Jakobsson
Various forms of high-frequency ventilation (HFV) have been described. HFV is broadly defined as artificial ventilation of the lungs with sub-deadspace tidal volumes delivered using supra-physiological frequencies. HFV has been used in anaesthesia and intensive care for special procedures and conditions since the 1960s. Clinical interest in the use and the technical evolution of HFV has developed over time. There is a renewed interest in HFV for avoiding parenchymal movement during stereotactic tumour ablation...
2017: F1000Research
https://www.readbyqxmd.com/read/28634106/biology-evolution-and-medical-importance-of-polyomaviruses-an-update
#19
REVIEW
Ugo Moens, Andi Krumbholz, Bernhard Ehlers, Roland Zell, Reimar Johne, Sébastien Calvignac-Spencer, Chris Lauber
The family Polyomaviridae encompasses non-enveloped viruses with a circular dsDNA genome that is typically approximately 5000bp in length. Originally isolated from mammals, polyomavirus sequences have now been detected in invertebrates, fish, amphibians, reptiles and birds, although it remains to be determined whether all these animals are genuine hosts. The genomes of all polyomaviruses encode at least two regulatory proteins (large and small tumour antigen) and two structural proteins (capsid proteins VP1 and VP2) whose functions have been defined...
June 17, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28622291/predicting-lung-cancer-recurrence-from-circulating-tumour-dna-commentary-on-phylogenetic-ctdna-analysis-depicts-early-stage-lung-cancer-evolution
#20
Daniel J Murphy, Kevin G Blyth
No abstract text is available yet for this article.
June 16, 2017: Cell Death and Differentiation
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