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Tumour budding

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https://www.readbyqxmd.com/read/27887640/functional-and-regulatory-profiling-of-energy-metabolism-in-fission-yeast
#1
Michal Malecki, Danny A Bitton, Maria Rodríguez-López, Charalampos Rallis, Noelia Garcia Calavia, Graeme C Smith, Jürg Bähler
BACKGROUND: The control of energy metabolism is fundamental for cell growth and function and anomalies in it are implicated in complex diseases and ageing. Metabolism in yeast cells can be manipulated by supplying different carbon sources: yeast grown on glucose rapidly proliferates by fermentation, analogous to tumour cells growing by aerobic glycolysis, whereas on non-fermentable carbon sources metabolism shifts towards respiration. RESULTS: We screened deletion libraries of fission yeast to identify over 200 genes required for respiratory growth...
November 25, 2016: Genome Biology
https://www.readbyqxmd.com/read/27884016/expression-profiling-of-budding-cells-in-colorectal-cancer-reveals-an-emt-like-phenotype-and-molecular-subtype-switching
#2
Linde De Smedt, Sofie Palmans, Daan Andel, Olivier Govaere, Bram Boeckx, Dominiek Smeets, Eva Galle, Jasper Wouters, David Barras, Madeleine Suffiotti, Jeroen Dekervel, Thomas Tousseyn, Gert De Hertogh, Hans Prenen, Sabine Tejpar, Diether Lambrechts, Xavier Sagaert
BACKGROUND: Tumour budding, described as the presence of single cells or small clusters of up to five tumour cells at the invasive margin, is established as a prognostic marker in colorectal carcinoma. In the present study, we aimed to investigate the molecular signature of tumour budding cells and the corresponding tumour bulk. METHODS: Tumour bulk and budding areas were microdissected and processed for RNA-sequencing. As little RNA was obtained from budding cells, a special low-input mRNA library preparation protocol was used...
November 24, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27815460/bubr1-insufficiency-in-mice-increases-their-sensitivity-to-oxidative-stress
#3
Daisuke Matsuda, Takuya Matsumoto, Kenichi Honma, Ayae Ikawa-Yoshida, Mitsuho Onimaru, Tadashi Furuyama, Yoshimichi Nakatsu, Teruhisa Tsuzuki, Yoshihiko Maehara
BACKGROUND/AIM: Budding uninhibited by benzimidazole-related 1 (BUBR1) plays an important role in the spindle assembly checkpoint to prevent chromosome missegregation and aneuploidy during mitosis. We previously generated mutant mice that express BUBR1 at only 20% of the normal level (BubR1(L/L) mice). Here, we examined the effect of low BUBR1 expression on oxidative stress-induced carcinogenesis in mice. MATERIALS AND METHODS: We orally administered either a potassium bromate (KBrO3) solution (2 g/l) or tap water to BubR1(L/L) and wild-type (BubR1(+/+))mice for 16 weeks and examined the subsequent incidence of tumours...
November 2016: In Vivo
https://www.readbyqxmd.com/read/27678454/signal-transduction-and-activator-of-transcription-3-stat3-in-patients-with-colorectal-cancer-associations-with-the-phenotypic-features-of-the-tumour-and-host
#4
James H Park, Hester C Van Wyk, Donald C McMillan, Jean A Quinn, Dr Jennifer Clark, Campbell Sd Roxburgh, Paul G Horgan, Joanne Edwards
PURPOSE: In patients with colorectal cancer (CRC), a high-density local inflammatory infiltrate response is associated with improved survival, whereas elevated systemic inflammatory responses are associated with poor survival. One potential unifying mechanism is the IL-6/JAK/STAT3 pathway. The present study examines the relationship between tumour total STAT3 and phosphorylated STAT3Tyr705 (pSTAT3) expression, host inflammatory responses and survival in patients undergoing resection of stage I-III CRC...
September 27, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27630328/tumour-budding-correlates-with-aggressiveness-of-cutaneous-squamous-cell-carcinoma
#5
Georgia Karayannopoulou, Sylvie Euvrard, Jean Kanitakis
BACKGROUND/AIM: Tumour budding (TB) is a specific pathological feature that has been found to be associated with an aggressive outcome in several cancer types; however, to our knowledge, TB has not yet been assessed in squamous-cell carcinomas of the skin (SCC). The aim of the study was to study whether TB correlates with aggressiveness in cutaneous SCC. MATERIALS AND METHODS: We examined 31 aggressive SCC (that later developed local recurrences or metastases) in comparison with 21 non-aggressive SCC (not complicated by recurrence or metastasis)...
September 2016: Anticancer Research
https://www.readbyqxmd.com/read/27599041/systematic-review-and-meta-analysis-of-the-impact-of-tumour-budding-in-colorectal-cancer
#6
A C Rogers, D C Winter, A Heeney, D Gibbons, A Lugli, G Puppa, K Sheahan
BACKGROUND: Tumour budding is a histological finding in epithelial cancers indicating an unfavourable phenotype. Previous studies have demonstrated that it is a negative prognostic indicator in colorectal cancer (CRC), and has been proposed as an additional factor to incorporate into staging protocols. METHODS: A systematic review of papers until March 2016 published on Embase, Medline, PubMed, PubMed Central and Cochrane databases pertaining to tumour budding in CRC was performed...
September 27, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27404452/characterisation-of-pd-l1-positive-subsets-of-microsatellite-unstable-colorectal-cancers
#7
Jung Ho Kim, Hye Eun Park, Nam-Yun Cho, Hye Seung Lee, Gyeong Hoon Kang
BACKGROUND: The aim of this study was to reveal the clinicopathological and molecular characteristics of microsatellite instability-high (MSI-H) colorectal cancers (CRCs) showing programmed death ligand-1 (PD-L1) positivity, which are good candidates for anti-PD-1/PD-L1 immunotherapy. METHODS: The PD-L1 expression status of 208 MSI-H CRCs was retrospectively analysed using immunohistochemistry. PD-L1 positivity in tumour cells (PD-L1+(T)) and PD-L1 positivity in immune cells (PD-L1+(I)) were separately evaluated...
August 9, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27394431/prognostic-relevance-of-histopathological-features-in-signet-ring-cell-carcinoma-of-the-colorectum
#8
Valeria Barresi, Luca Reggiani Bonetti, Federica Domati, Luigi Baron
Signet ring cell carcinoma (SRCC) is a rare variant of colorectal cancer (CRC), by definition composed of at least 50 % of neoplastic cells showing signet ring cell morphology. Colorectal SRCC is mainly characterized by aggressive clinical behavior, high pTNM stage and microsatellite instability (MSI). We assessed the prognostic value of several histopathological parameters (histological grade, venous invasion, lymphovascular invasion, MSI, mucin content, tumour budding, pTNM stage) in terms of disease free survival (DFS) and cancer specific survival (CSS) in a series of 32 SRCCs...
September 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27299960/the-relationship-between-tumour-budding-the-tumour-microenvironment-and-survival-in-patients-with-primary-operable-colorectal-cancer
#9
Hester C van Wyk, James H Park, Joanne Edwards, Paul G Horgan, Donald C McMillan, James J Going
BACKGROUND: Tumour budding has been reported to reflect invasiveness, metastasis and unfavourable prognosis in colorectal cancer. The aim of the study was to examine the relationship between tumour budding and clinicopathological characteristics, tumour microenvironment and survival in patients with primary operable colorectal cancer. METHODS: A total of 303 patients from a prospective data set of patients with primary operable colorectal cancer were included in the study...
July 12, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27253882/is-the-assessment-of-submucosal-invasion-still-useful-in-the-management-of-early-rectal-cancer-a-study-of-91-consecutive-patients
#10
Clotilde Debove, Magali Svrcek, Sylvie Dumont, Najim Chafai, Emmanuel Tiret, Yann Parc, Jérémie H Lefèvre
AIM: Only former studies, including colic and rectal cancers, exist on the prognosis of T1 tumours. Very few studies use Kikuchi's classification, dividing submucosa in 3 strata, to evaluate the depth of the submucosal invasion. This study aimed to assess the pathological risk factors for lymph nodes metastasis (LNM), pathologic and oncologic results of patients with early rectal cancer (ERC, pT1 tumour). METHODS: Between 2000 and 2014, 91 consecutive patients undergoing surgery (primary total mesorectal excision (TME) or local excision (LE) alone or LE followed by TME) for ERC were included...
June 2, 2016: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/27148467/evaluation-of-various-nuclear-cytological-changes-in-normal-buccal-mucosa-and-peritumoural-area-in-patients-with-oral-squamous-cell-carcinoma-receiving-concomitant-chemoradiotherapy
#11
Sadia Minhas, Muhammad Kashif, A H Nagi
Objectives. To evaluate the role of serial cytological assay in calculating the nuclear response of contralateral normal buccal mucosa and peritumoural area of squamous cell carcinoma of oral cavity in patients receiving fractionated radiotherapy (RT) and chemotherapy. Materials and Methods. This prospective, nonrandomized study was comprised of 76 histologically confirmed cases of oral squamous cell carcinoma on cyclical chemoradiation treatment. Chemoradiosensitivity was evaluated using serial scrape smears taken before and after immediate exposure to CCRT, at 17th day of CCRT (mid of treatment), and at the end of treatment...
2016: Pathology Research International
https://www.readbyqxmd.com/read/26836800/the-pathological-phenotype-of-colon-cancer-with-microsatellite-instability
#12
Helene Schou Andersen, Claus Anders Bertelsen, Rikke Henriksen, Andre Heiner Campos, Bent Kristensen, Peter Ingeholm, Ismail Gögenur
INTRODUCTION: Colorectal cancer is a common malignant disease, caused by different aetiologies and molecular pathways. Heterogeneous results have been published regarding the association of microsatellite instability and clinicopathological features. The aim of this study was to compare clinicopathological features of microsatellite unstable tumours with stable ones. METHODS: Data were collected retrospectively, but the pathological analyses were all made prospectively...
February 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/26796961/the-cell-surface-mucin-podocalyxin-regulates-collective-breast-tumor-budding
#13
Marcia L Graves, Jane A Cipollone, Pamela Austin, Erin M Bell, Julie S Nielsen, C Blake Gilks, Kelly M McNagny, Calvin D Roskelley
BACKGROUND: Overexpression of the transmembrane sialomucin podocalyxin, which is known to play a role in lumen formation during polarized epithelial morphogenesis, is an independent indicator of poor prognosis in a number of epithelial cancers, including those that arise in the breast. Therefore, we set out to determine if podocalyxin plays a functional role in breast tumor progression. METHODS: MCF-7 breast cancer cells, which express little endogenous podocalyxin, were stably transfected with wild type podocalyxin for forced overexpression...
2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/26766735/tumour-budding-with-and-without-admixed-inflammation-two-different-sides-of-the-same-coin
#14
Nicole Max, Lars Harbaum, Marion J Pollheimer, Richard A Lindtner, Peter Kornprat, Cord Langner
BACKGROUND: Tumour budding is an adverse prognostic indicator in colorectal cancer (CRC). Marked overall peritumoural inflammation has been associated with favourable outcome and may lead to the presence of isolated cancer cells due to destruction of invading cancer cell islets. METHODS: We assessed the prognostic significance of tumour budding and peritumoural inflammation in a cohort of 381 patients with CRC applying univariate and multivariate analyses. RESULTS: Patients with high-grade budding and marked inflammation had a significantly better outcome compared with patients with high-grade budding and only mild inflammation...
February 16, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/26613948/saga-dub-ubp8-deubiquitylates-centromeric-histone-variant-cse4
#15
Claudia Canzonetta, Stefano Vernarecci, Michele Iuliani, Cristina Marracino, Claudia Belloni, Paola Ballario, Patrizia Filetici
Aneuploidy, the unbalanced segregation of chromosomes during cell division, is recurrent in many tumors and the cause of birth defects and genetic diseases. Centromeric chromatin represents the chromosome attachment site to the mitotic spindle, marked by specialized nucleosomes containing a specific histone variant, CEN-H3/Cse4, in yeast. Mislocalization of Cse4 outside the centromere is deleterious and may cause aberrant chromosome behavior and mitotic loss. For this reason, ubiquitylation by the E3-ubiquitin ligase Psh1 and subsequent proteolysis tightly regulates its restricted localization...
November 27, 2015: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/26613731/tumour-budding-in-colorectal-cancer-what-do-we-know-and-what-can-we-do
#16
REVIEW
Linde De Smedt, Sofie Palmans, Xavier Sagaert
Budding is a process during which individual or small clusters of up to five tumour cells detach from the main tumour mass and invade into the surrounding stroma. In colorectal cancer, this feature is observed in 20-40% of cases and is associated with lymphovascular invasion, lymph node and distant metastases, and poor prognosis. A variety of scoring systems for budding have been proposed but so far a gold standard is lacking, hampering implementation of a budding score in guidelines for pathological examination of colorectal cancer...
April 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/26554618/histologic-prognostic-markers-in-stage-iia-colorectal-cancer-a-comparative-study
#17
COMPARATIVE STUDY
Valeria Barresi, Luca Reggiani Bonetti, Antonio Ieni, Giovanni Branca, Giovanni Tuccari
OBJECTIVE: pTNM stage IIA colorectal cancer (CRC) is not currently submitted to any adjuvant treatment due to its good prognosis. Nevertheless, a percentage of cases unexpectedly recur. The aim of this study was to assess and compare the prognostic value and inter-observer agreement of a novel histological grading system based on the counting of poorly differentiated clusters (PDC) of cancer cells and that of conventional histological grade, lymphatic, venous and perineural invasion (LVI, VI, PNI), tumour budding (TB) and tumor border configuration in stage IIA CRC...
March 2016: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/26541540/proposal-of-a-prognostically-relevant-grading-scheme-for-pulmonary-squamous-cell-carcinoma
#18
Wilko Weichert, Claudia Kossakowski, Alexander Harms, Peter Schirmacher, Thomas Muley, Hendrik Dienemann, Arne Warth
Recent studies in lung adenocarcinoma established a clinically relevant histomorphology-based classification. In contrast, no morphological classifiers have yet been implemented into routine diagnostics for lung squamous cell carcinoma (SQCC). However, morphology-based characteristics putatively impacting on survival have been proposed.We analysed a cohort of 541 SQCC patients with complete clinical follow-up data for morphological characteristics (keratinisation, tumour cell budding, size of tumour cell nests, nuclear size and stromal content)...
March 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/26453549/intrinsic-factors-and-the-embryonic-environment-influence-the-formation-of-extragonadal-teratomas-during-gestation
#19
Constantinos Economou, Anestis Tsakiridis, Filip J Wymeersch, Sabrina Gordon-Keylock, Robert E Dewhurst, Dawn Fisher, Alexander Medvinsky, Andrew J H Smith, Valerie Wilson
BACKGROUND: Pluripotent cells are present in early embryos until the levels of the pluripotency regulator Oct4 drop at the beginning of somitogenesis. Elevating Oct4 levels in explanted post-pluripotent cells in vitro restores their pluripotency. Cultured pluripotent cells can participate in normal development when introduced into host embryos up to the end of gastrulation. In contrast, pluripotent cells efficiently seed malignant teratocarcinomas in adult animals. In humans, extragonadal teratomas and teratocarcinomas are most frequently found in the sacrococcygeal region of neonates, suggesting that these tumours originate from cells in the posterior of the embryo that either reactivate or fail to switch off their pluripotent status...
October 9, 2015: BMC Developmental Biology
https://www.readbyqxmd.com/read/26352110/kras-nras-braf-mutations-and-high-counts-of-poorly-differentiated-clusters-of-neoplastic-cells-in-colorectal-cancer-observational-analysis-of-175-cases
#20
Valeria Barresi, Luca Reggiani Bonetti, Stefania Bettelli
A novel grading system based on the counting of poorly differentiated clusters (PDC) of neoplastic cells at the invasive margin and in the tumour stroma was recently introduced among the histological parameters predictive of adverse clinical outcome in colorectal cancer (CRC). The aim of this study was to correlate the histological grade based on PDC and the mutational status of KRAS, NRAS and BRAF genes in 175 consecutive CRCs. The highest PDC count under the objective lens of a ×20 microscopic field in each tumour was considered for grading assessment, so that PDC counts <5, 5-9 and ≥10 PDCs were defined grade 1, grade 2 and grade 3, respectively...
October 2015: Pathology
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