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Tumor budding

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https://www.readbyqxmd.com/read/28075051/bilateral-multifocal-upper-extremity-atypical-granular-cell-tumors-presenting-as-long-standing-right-wrist-and-left-hand-masses-in-a-15-year-old-african-american-female
#1
Michael DeWall, Corey O Montgomery, Jerad M Gardner
Granular cell tumor (GrCT) is a benign nerve sheath tumor. Atypical and malignant variants of GrCT are rare but have been well described. We report a case of multifocal symmetric atypical GrCT in the bilateral hand/wrists of a 15 year old African American female. The initial clinical impression for both masses were favored to be ganglion cysts. Ultrasound findings of both masses revealed hypoechoic soft tissue lesions with some internal echogenicity favoring complex cysts. On excision, both masses were histologically circumscribed, lobulated, and attached to tendon...
January 11, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28030620/simulating-heterogeneous-tumor-cell-populations
#2
Andrew Sundstrom, Dafna Bar-Sagi, Bud Mishra
Certain tumor phenomena, like metabolic heterogeneity and local stable regions of chronic hypoxia, signify a tumor's resistance to therapy. Although recent research has shed light on the intracellular mechanisms of cancer metabolic reprogramming, little is known about how tumors become metabolically heterogeneous or chronically hypoxic, namely the initial conditions and spatiotemporal dynamics that drive these cell population conditions. To study these aspects, we developed a minimal, spatially-resolved simulation framework for modeling tissue-scale mixed populations of cells based on diffusible particles the cells consume and release, the concentrations of which determine their behavior in arbitrarily complex ways, and on stochastic reproduction...
2016: PloS One
https://www.readbyqxmd.com/read/28008384/circulating-cytokeratin-positive-cells-and-tumor-budding-in-colorectal-cancer
#3
Bruno Märkl, Narjes Wilhelms, Matthias Anthuber, Gerhard Schenkirsch, Günter Schlimok, Daniel Oruzio
AIM: To investigate whether circulating cytokeratin-positive (CK(+)) cells in the mesenteric blood of resected colorectal specimens are prognostic and correlate with tumor budding. METHODS: Fifty-six colorectal specimens were collected between 9/2007 and 7/2008. Blood from the mesenteric vein was drawn immediately after receiving the fresh and unfixed specimens in the pathology department. After separation of the mononuclear cells by Ficoll-Hypaque density-gradient centrifugation, cytological smears were immunocytochemically stained for CK18...
December 10, 2016: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27999192/superior-mesenteric-artery-margin-in-pancreaticoduodenectomy-for-pancreatic-adenocarcinoma
#4
Dao-Ning Liu, Ang Lv, Zhi-Hua Tian, Xiu-Yun Tian, Xiao-Ya Guan, Bin Dong, Min Zhao, Chun-Yi Hao
The aim of this study is trying to describe more details of superior mesenteric artery margin in pancreaticoduodenectomy for pancreatic ductal adenocarcinoma, to evaluate biological and prognostic implications of tumor budding in this margin, and to provide more evidence for evaluation of R0 surgery in pancreaticoduodenectomy. 46 patients in 5-years period are included in this study. Immunochemistry and immunofluorescence are used to analyze tumor budding and epithelial-mesenchymal transition. Superior mesenteric artery margin might be described from four aspects including location, gross appearance, microscopic appearance and tumor budding...
December 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27991913/linking-genomic-reorganization-to-tumor-initiation-via-the-giant-cell-cycle
#5
N Niu, J Zhang, N Zhang, I Mercado-Uribe, F Tao, Z Han, S Pathak, A S Multani, J Kuang, J Yao, R C Bast, A K Sood, M-C Hung, J Liu
To investigate the mechanisms underlying our recent paradoxical finding that mitotically incapacitated and genomically unstable polyploid giant cancer cells (PGCCs) are capable of tumor initiation, we labeled ovarian cancer cells with α-tubulin fused to green fluorescent protein, histone-2B fused to red fluorescent protein and FUCCI (fluorescent ubiquitination cell cycle indicator), and tracked the spatial and time-dependent change in spindle and chromosomal dynamics of PGCCs using live-cell fluorescence time-lapse recording...
December 19, 2016: Oncogenesis
https://www.readbyqxmd.com/read/27923995/homologous-recombination-in-budding-yeast-expressing-the-human-rad52-gene-reveals-a-rad51-independent-mechanism-of-conservative-double-strand-break-repair
#6
Glenn M Manthey, Alissa D Clear, Lauren C Liddell, Maria C Negritto, Adam M Bailis
RAD52 is a homologous recombination (HR) protein that is conserved from bacteriophage to humans. Simultaneously attenuating expression of both the RAD52 gene, and the HR and tumor suppressor gene, BRCA2, in human cells synergistically reduces HR - indicating that RAD52 and BRCA2 control independent mechanisms of HR. We have expressed the human RAD52 gene (HsRAD52) in budding yeast strains lacking the endogenous RAD52 gene and found that HsRAD52 supports repair of DNA double-strand breaks (DSB) by a mechanism of HR that conserves genome structure...
December 6, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27920683/squamous-cell-carcinoma-in-african-children-with-xeroderma-pigmentosum-three-case-reports
#7
Mamadou Kaloga, Pauline Dioussé, Boubacar Ahy Diatta, Mariama Bammo, Sarah Kourouma, Almamy Diabate, Ndiaga Gueye, Haby Dione, Moussa Diallo, Bernard Marcel Diop
INTRODUCTION: Xeroderma pigmentosum is a rare autosomal recessive genetic disease. This disease predisposes patients to early-onset skin cancers, particularly squamous cell carcinoma. Here, we report 3 pediatric cases, including 2 deaths. OBSERVATION: The subjects included 2 boys and 1 girl with skin type VI. All subjects were from consanguineous marriages, and the average age was 7.6 years. The patients all had ulcerative budding tumor lesions in the cephalic region, and the mean disease duration was 18 months...
September 2016: Case Reports in Dermatology
https://www.readbyqxmd.com/read/27914130/braf-mutated-colorectal-cancer-exhibits-distinct-clinicopathological-features-from-wild-type-braf-expressing-cancer-independent-of-the-microsatellite-instability-status
#8
Min Hye Jang, Sehun Kim, Dae Yong Hwang, Wook Youn Kim, So Dug Lim, Wan Seop Kim, Tea Sook Hwang, Hye Seung Han
In patients with colorectal cancer (CRC), the BRAF V600E mutation has been reported to be associated with several clinicopathological features and poor survival. However, the prognostic implications of BRAF V600E mutation and the associated clinicopathological characteristics in CRCs remain controversial. Therefore, we reviewed various clinicopathological features, including BRAF status, in 349 primary CRCs and analyzed the relationship between BRAF status and various clinicopathological factors, including overall survival...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27902593/angiosarcoma-in-the-chest-radiologic-pathologic-correlation-case-report
#9
Sara Piciucchi, Alessandra Dubini, Sara Tomassetti, Stefano Sanna, Claudia Ravaglia, Angelo Carloni, Christian Gurioli, Carlo Gurioli, Thomas V Colby, Venerino Poletti
RATIONALE: Angiosarcomas are rare, malignant vascular tumors. PATIENT CONCERNS: They represents about 2% of all soft tissue sarcoma, which can often metastasize through the hematogenous route. The radiological features have been analyzed in 4 patients with metastatic angiosarcoma in the chest. DIAGNOSES: The main radiologic findings included nodules, cysts, nodules with halo sign, and vascular tree-in-bud. Morphologic features, as observed in the histologic specimen, have been correlated with radiologic appearance...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27875985/nuclear-envelope-structural-defect-underlies-the-main-cause-of-aneuploidy-in-ovarian-carcinogenesis
#10
Callinice D Capo-Chichi, Toni M Yeasky, Elizabeth R Smith, Xiang-Xi Xu
BACKGROUND: The Cancer Atlas project has shown that p53 is the only commonly (96 %) mutated gene found in high-grade serous epithelial ovarian cancer, the major histological subtype. Another general genetic change is extensive aneuploidy caused by chromosomal numerical instability, which is thought to promote malignant transformation. Conventionally, aneuploidy is thought to be the result of mitotic errors and chromosomal nondisjunction during mitosis. Previously, we found that ovarian cancer cells often lost or reduced nuclear lamina proteins lamin A/C, and suppression of lamin A/C in cultured ovarian epithelial cells leads to aneuploidy...
November 22, 2016: BMC Cell Biology
https://www.readbyqxmd.com/read/27869652/epithelial-to-mesenchymal-transition-drives-a-pro-metastatic-golgi-compaction-process-through-scaffolding-protein-paqr11
#11
Xiaochao Tan, Priyam Banerjee, Hou-Fu Guo, Stephen Ireland, Daniela Pankova, Young-Ho Ahn, Irodotos Michail Nikolaidis, Xin Liu, Yanbin Zhao, Yongming Xue, Alan R Burns, Jonathon Roybal, Don L Gibbons, Tomasz Zal, Chad J Creighton, Daniel Ungar, Yanzhuang Wang, Jonathan M Kurie
Tumor cells gain metastatic capacity through a Golgi phosphoprotein 3-dependent (GOLPH3-dependent) Golgi membrane dispersal process that drives the budding and transport of secretory vesicles. Whether Golgi dispersal underlies the pro-metastatic vesicular trafficking that is associated with epithelial-to-mesenchymal transition (EMT) remains unclear. Here, we have shown that, rather than causing Golgi dispersal, EMT led to the formation of compact Golgi organelles with improved ribbon linking and cisternal stacking...
January 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27866426/comparative-study-on-the-induction-of-complex-genomic-alterations-after-exposure-of-mammalian-cells-to-carboplatin-and-oxaliplatin
#12
Ana Paula de Souza, Mauricio Lehmann, Rafael Rodrigues Dihl
Metal complexes are still broadly used as the first line of the treatment for different types of tumors nowadays. Carboplatin and oxaliplatin were authorized for clinical use, even though there is little information on the mutagenic profile associated to their usage. This study evaluated the cytostatic effects and the induction of complex genomic alterations after 24-h treatment of CHO-K1 cells to concentrations of 12.5-800 μM of carboplatin and oxaliplatin in the cytokinesis-block micronucleus assay (CBMN-Cyt)...
November 20, 2016: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27861522/high-grade-tumor-budding-stratifies-early-stage-cervical-cancer-with-recurrence-risk
#13
Bangxing Huang, Jing Cai, Xia Xu, Shuang Guo, Zehua Wang
OBJECTIVES: This study investigated prognostic significance of tumor budding in early-stage cervical cancer (ESCC) following radical surgery and its contribution to improve the stratification of patients with recurrence risk. METHODS: The archival medical records and H&E-stained slides of 643 patients with IA2-IIA stage cervical cancer who underwent radical surgery were retrospectively reviewed. Clinicopathological parameters were noted, and tumor buds were counted using immunohistochemistry for each case...
2016: PloS One
https://www.readbyqxmd.com/read/27843459/tumor-budding-micropapillary-pattern-and-polyploidy-giant-cancer-cells-in-colorectal-cancer-current-status-and-future-prospects
#14
REVIEW
Shiwu Zhang, Dan Zhang, Zhengduo Yang, Xipeng Zhang
We previously reported that polyploid giant cancer cells (PGCGs) induced by CoCl2 could form through endoreduplication or cell fusion. A single PGCC formed tumors in immunodeficient mice. PGCCs are also the key contributors to the cellular atypia and associate with the malignant grade of tumors. PGCCs have the properties of cancer stem cells and produce daughter cells via asymmetric cell division. Compared with diploid cancer cells, these daughter cells express less epithelial markers and acquire mesenchymal phenotype with importance in cancer development and progression...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27836787/tumor-budding-at-the-invasive-front-of-colorectal-cancer-may-not-be-associated-with-the-epithelial-mesenchymal-transition
#15
Noriyuki Yamada, Tamotsu Sugai, Makoto Eizuka, Koudai Tsuchida, Ryo Sugimoto, Yoshiharu Mue, Masamichi Suzuki, Mitsumasa Osakabe, Noriyuki Uesugi, Kazuyuki Ishida, Kouki Otsuka, Takayuki Matsumoto
Tumor budding is thought to reflect the epithelial-mesenchymal transition (EMT). However, the molecular mechanism linking tumor buds and the EMT remains unclear. Here, we examined the induction of tumor budding and EMT and their association with EMT-related proteins (ZEB1, TWIST, SNAIL and SLUG) in colorectal cancer (CRC). Immunohistochemical expression of pan-cytokeratin was examined for identification of tumor budding in 101 CRCs. Grading of tumor budding was classified into low and high grade groups. Tissue micro-array was conducted to identify tumor budding sites...
November 8, 2016: Human Pathology
https://www.readbyqxmd.com/read/27833910/extracellular-microvesicle-production-by-human-eosinophils-activated-by-inflammatory-stimuli
#16
Praveen Akuthota, Lívia A S Carmo, Kennedy Bonjour, Ryann O Murphy, Thiago P Silva, Juliana P Gamalier, Kelsey L Capron, John Tigges, Vasilis Toxavidis, Virginia Camacho, Ionita Ghiran, Shigeharu Ueki, Peter F Weller, Rossana C N Melo
A key function of human eosinophils is to secrete cytokines, chemokines and cationic proteins, trafficking, and releasing these mediators for roles in inflammation and other immune responses. Eosinophil activation leads to secretion of pre-synthesized granule-stored mediators through different mechanisms, but the ability of eosinophils to secrete extracellular vesicles (EVs), very small vesicles with preserved membrane topology, is still poorly understood. In the present work, we sought to identify and characterize EVs released from human eosinophils during different conditions: after a culturing period or after isolation and stimulation with inflammatory stimuli, which are known to induce eosinophil activation and secretion: CCL11 (eotaxin-1) and tumor necrosis factor alpha (TNF-α)...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27826198/high-expression-of-muscarinic-acetylcholine-receptor-3-predicts-poor-prognosis-in-patients-with-pancreatic-ductal-adenocarcinoma
#17
Lingfu Zhang, Dianrong Xiu, Jun Zhan, Xiaokun He, Limei Guo, Jilian Wang, Ming Tao, Wei Fu, Hongquan Zhang
AIMS: Recent studies showed that muscarinic acetylcholine receptor 3 (M3), as a muscarinic acetylcholine receptor family member that plays an important role in normal physiological function, is engaged in cancer progression. However, the role of M3 in pancreatic ductal adenocarcinoma (PDAC) is not known. The aim of this study is to investigate the expression and prognostic value of M3 in patients with PDAC. MATERIALS AND METHODS: The localization and expression of M3 in PDAC were examined by immunohistochemistry...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27825542/histopathological-tumor-invasion-of-the-mesenterico-portal-vein-is-characterized-by-aggressive-biology-and-stromal-fibroblast-activation
#18
Hryhoriy Lapshyn, Louisa Bolm, Ilona Kohler, Martin Werner, Franck G Billmann, Dirk Bausch, Ulrich T Hopt, Frank Makowiec, Uwe A Wittel, Tobias Keck, Peter Bronsert, Ulrich F Wellner
BACKGROUND: Mesenterico-portal vein resection (PVR) during pancreatoduodenectomy for pancreatic head cancer was established in the 1990s and can be considered a routine procedure in specialized centers today. True histopathologic portal vein invasion is predictive of poor prognosis. The aim of this study was to examine the relationship between mesenterico-portal venous tumor infiltration (PVI) and features of aggressive tumor biology. METHODS: Patients receiving PVR for pancreatic ductal adenocarcinoma of the pancreatic head were identified from a prospectively maintained database...
November 5, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27805003/image-analysis-derived-metrics-of-histomorphological-complexity-predicts-prognosis-and-treatment-response-in-stage-ii-iii-colon-cancer
#19
Artur Mezheyeuski, Ina Hrynchyk, Mia Karlberg, Anna Portyanko, Lars Egevad, Peter Ragnhammar, David Edler, Bengt Glimelius, Arne Östman
The complexity of tumor histomorphology reflects underlying tumor biology impacting on natural course and response to treatment. This study presents a method of computer-aided analysis of tissue sections, relying on multifractal (MF) analyses, of cytokeratin-stained tumor sections which quantitatively evaluates of the morphological complexity of the tumor-stroma interface. This approach was applied to colon cancer collection, from an adjuvant treatment randomized study. Metrics obtained with the method acted as independent markers for natural course of the disease, and for benefit of adjuvant treatment...
November 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27793046/transcriptional-upregulation-of-c-met-is-associated-with-invasion-and-tumor-budding-in-colorectal-cancer
#20
Conor A Bradley, Philip D Dunne, Victoria Bingham, Stephen McQuaid, Hajrah Khawaja, Stephanie Craig, Jackie James, Wendy L Moore, Darragh G McArt, Mark Lawler, Sonali Dasgupta, Patrick G Johnston, Sandra Van Schaeybroeck
c-MET and its ligand HGF are frequently overexpressed in colorectal cancer (CRC) and increased c-MET levels are found in CRC liver metastases. This study investigated the role of the HGF/c-MET axis in regulating migration/invasion in CRC, using pre-clinical models and clinical samples. Pre-clinically, we found marked upregulation of c-MET at both protein and mRNA levels in several invasive CRC cells. Down-regulation of c-MET using RNAi suppressed migration/invasion of parental and invasive CRC cells. Stimulation of CRC cells with rh-HGF or co-culture with HGF-expressing colonic myofibroblasts, resulted in significant increases in their migratory/invasive capacity...
October 26, 2016: Oncotarget
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