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cancer and plastic

Evgenii Tcyganov, Jerome Mastio, Eric Chen, Dmitry I Gabrilovich
In recent years, myeloid-derived suppressor cells (MDSC) have emerged as one of the major inhibitors of immune effector cell function in cancer. MDSC represent a heterogeneous population of largely immature myeloid cells that are characterized by a pathological state of activation and display potent immune suppressive activity. Two major subsets of MDSC have been identified: monocytic (M-MDSC) and polymorphonuclear (PMN-MDSC). PMN-MSDC share phenotypic and morphologic features with neutrophils, whereas M-MDSC are similar to monocytes and are characterized by high plasticity...
March 13, 2018: Current Opinion in Immunology
Sara Sigismund, Giorgio Scita
An explosive growth in knowledge, in the last two decades, has conferred a new dimension to the process of endocytosis. Endocytic circuitries have come into focus as a pervasive system that controls virtual all aspects of cell biology. A few years ago, we proposed the term 'endocytic matrix' to define a cellular network of signalling wiring that is at the core of the cellular blueprint. A primary role of the endocytic matrix is the delivery of space-resolved and time-resolved signals to the cell in an interpretable format, and, as such, it has profound consequences on polarized cellular and supra-cellular functions, first and foremost, cell motility...
March 12, 2018: Current Opinion in Cell Biology
Natthakan Thongon, Chiara Zucal, Vito Giuseppe D'Agostino, Toma Tebaldi, Silvia Ravera, Federica Zamporlini, Francesco Piacente, Ruxanda Moschoi, Nadia Raffaelli, Alessandro Quattrone, Alessio Nencioni, Jean-Francois Peyron, Alessandro Provenzani
Background: Inhibitors of nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme in NAD+ biosynthesis from nicotinamide, exhibit anticancer effects in preclinical models. However, continuous exposure to NAMPT inhibitors, such as FK866, can induce acquired resistance. Methods: We developed FK866-resistant CCRF-CEM (T cell acute lymphoblastic leukemia) and MDA MB231 (breast cancer) models, and by exploiting an integrated approach based on genetic, biochemical, and genome wide analyses, we annotated the drug resistance mechanisms...
2018: Cancer & Metabolism
Mette Schou Nissen, Zara Ann Stokholm, Mette Skovgaard Christensen, Vivi Schlünssen, Jesper Medom Vestergaard, Inge Brosbøl Iversen, Henrik Albert Kolstad
BACKGROUND: Sinonasal adenocarcinoma is a rare disease expected to have rare causes and potential for strong risk factors as reflected by the strong association with occupational wood dust exposure. High level styrene exposure is a rare and suspected carcinogen, and this study examines the exposure-response relation between occupational styrene exposure, sinonasal adenocarcinoma and other subtypes. METHODS: We followed 73 092 styrene-exposed workers from 1968 to 2011 and identified sinonasal cancers in the Danish Cancer Registry...
March 14, 2018: Occupational and Environmental Medicine
M Sohn, M Dietrich, A Wirthmann, U M Rieger
BACKGROUND: Due to the rising incidence of penile cancer and increasing life expectancy in western nations, the current international guidelines recommend a less aggressive surgical approach with reduced safety margins and preferably with organ preservation. OBJECTIVES: The goal of this review is to review the current data on stage-dependent reconstructive surgical techniques and their oncological and functional results. MATERIALS AND METHODS: Five recently published reviews and several single studies and publications on the topic of organ-sparing surgical techniques and penile reconstruction were evaluated to draw conclusions for surgery in penile cancer...
March 13, 2018: Der Urologe. Ausg. A
Yan Ting Shue, Jing Shan Lim, Julien Sage
Small cell lung carcinoma (SCLC) is a fast-growing, highly metastatic form of lung cancer. A major difference between SCLC and other forms of lung cancer is that SCLC tumors often respond well to chemotherapy initially; unfortunately, resistant tumors rapidly recur. In addition, despite a large number of clinical trials with a variety of therapeutic agents, little progress has been achieved in the past three decades in improving the survival of SCLC patients. These clinical observations indicate that SCLC tumors have a high degree of plasticity and rapid adaptability to changes in growth conditions...
February 2018: Translational Lung Cancer Research
Dongya Jia, Jun Hyoung Park, Kwang Hwa Jung, Herbert Levine, Benny Abraham Kaipparettu
Aerobic glycolysis, also referred to as the Warburg effect, has been regarded as the dominant metabolic phenotype in cancer cells for a long time. More recently, it has been shown that mitochondria in most tumors are not defective in their ability to carry out oxidative phosphorylation (OXPHOS). Instead, in highly aggressive cancer cells, mitochondrial energy pathways are reprogrammed to meet the challenges of high energy demand, better utilization of available fuels and macromolecular synthesis for rapid cell division and migration...
March 13, 2018: Cells
Mette Skovgaard Christensen, Jesper Medom Vestergaard, Francesco d'Amore, Jette Sønderskov Gørløv, Gunnar Toft, Cecilia Høst Ramlau-Hansen, Zara Ann Stokholm, Inge Brosbøl Iversen, Mette Schou Nissen, Henrik Albert Kolstad
BACKGROUND: Styrene is an important industrial chemical that the general population is exposed to at low levels. Previous research has suggested increased occurrence of leukemia and lymphoma among reinforced plastics workers exposed at high levels of styrene. METHODS: We followed 73,036 workers of 456 small and medium sized Danish reinforced plastics companies 1968-2011 and investigated the exposure-response relation between cumulative styrene exposure and incidence of lymphohematopoietic malignancies...
March 10, 2018: Epidemiology
Theresa L Whiteside
Regulatory T cells (Treg) characterized by expression of FOXP3 and strong immunosuppressive activity play a key role in regulating homeostasis in health and disease. Areas covered: Human Treg are highly diverse phenotypically and functionally. In the tumor microenvironment (TME), Treg are reprogrammed by the tumor, acquiring an activated phenotype and enhanced suppressor functions. No unique phenotypic markers for Treg accumulating in human tumors exist. Treg are heterogeneous and use numerous mechanisms to mediate suppression, which either silences anti-tumor immune surveillance or prevents tissue damage by activated T cells...
March 13, 2018: Expert Opinion on Therapeutic Targets
Yuanyuan Weng, Xueyu Fan, Yongfeng Bai, Siwei Wang, Hui Huang, Huimin Yang, Jin Zhu, Feng Zhang
The metabolism of cancer cells is highly plastic. Cancer cells can change their preference for nutrient uptake under nutrient stress. Fructose is one of the most common carbohydrates in diet and its metabolism is also involved in the development and progression of tumors. GLUT5, encoded by SLC2A5 , is the specific fructose transporter in mammalian cells. In this study, we found that SLC2A5 is significantly upregulated in lung adenocarcinoma (LUAD) patients and overexpression of SLC2A5 is highly correlated with poor prognosis of LUAD patients...
December 2018: Cell Death Discovery
Shengwen Calvin Li, Mustafa H Kabeer
Pediatric origin of cancer stem cell hypothesis holds great promise and potential in adult cancer treatment, however; the road to innovation is full of obstacles as there are plenty of questions left unanswered. First, the key question is to characterize the nature of such stem cells (concept). Second, the quantitative imaging of pediatric stem cells should be implemented (technology). Conceptually, pediatric stem cell origins of adult cancer are based on the notion that plasticity in early life developmental programming evolves local environments to cancer...
February 26, 2018: World Journal of Stem Cells
Igor Motuzyuk, Oleg Sydorchuk, Natalia Kovtun, Zinaida Palian, Yevhenii Kostiuchenko
Background: The study aims to evaluate the current state and tendencies in multiple primary breast cancer incidence, behavior, and treatment in Ukraine. Methods: A total of 2032 patients who received special treatment at the Department of Breast Tumors and Reconstructive Surgery of the National Cancer Institute from 2008 to 2015 were included in the study. Among them, there were 195 patients with multiple primary malignant neoplasms: 54.9% patients with synchronous cancer and 45...
2018: Breast Cancer: Basic and Clinical Research
Peter J Lee, Amareshwar Podugu, Dong Wu, Arier C Lee, Tyler Stevens, John A Windsor
BACKGROUND: Controversy remains about the best pre-operative management of jaundice in patients with resectable pancreatic head cancer (RPC) undergoing planned pancreaticoduodenectomy (PD). OBJECTIVE: The aim of this study was to compare rates of post-operative complications in patients undergoing four pre-operative approaches (POA): preoperative biliary drainage with plastic stent (PBD-PS), metal stent (PBD-MS), and percutaneous transhepatic drain (PBD-PT), or no pre-operative biliary drainage (NPBD)...
March 8, 2018: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
Aleksandra S Chikina, Antonina Y Alexandrova
During the last few years, significant attention has been given to the plasticity of cell migration, i.e., the ability of individual cell to switch between different motility modes, in particular between mesenchymal and amoeboid motilities. This phenomenon is called the mesenchymal-to-amoeboid transition (MAT). Such a plasticity of cell migration is a mechanism, by which cancer cells can adapt their migration mode to different microenvironments and thus it may promote tumor dissemination. It was shown that interventions at certain regulatory points of mesenchymal motility as well as alterations of environmental conditions can trigger MAT...
2018: Methods in Molecular Biology
Javier García-Pérez, Virginia Lope, Beatriz Pérez-Gómez, Antonio José Molina, Adonina Tardón, María Angustias Díaz Santos, Eva Ardanaz, Cristina O'Callaghan-Gordo, Jone M Altzibar, Inés Gómez-Acebo, Víctor Moreno, Rosana Peiró, Rafael Marcos-Gragera, Manolis Kogevinas, Nuria Aragonés, Gonzalo López-Abente, Marina Pollán
Breast cancer is the most frequent tumor in women worldwide, although well-established risk factors account for 53%-55% of cases. Therefore, other risk factors, including environmental exposures, may explain the remaining variation. Our objective was to assess the relationship between risk of breast cancer and residential proximity to industries, according to categories of industrial groups and specific pollutants released, in the context of a population-based multicase-control study of incident cancer carried out in Spain (MCC-Spain)...
March 7, 2018: Environmental Pollution
Marc Giovannini
Ultrasound-guided drainage is the first-line modality for drainage of symptomatic of pancreatic fluid collections. In the context of pancreatic cancer, use of multiple double-pigtail plastic stents suffice, with high treatment efficacy. This approach provides similar success rates with low complications and better quality of life compared with surgery. Lumen apposing metallic stents (LAMSs) permit more effective drainage with larger diameter; because of their higher costs than plastic stents, their main role is probably in the context of walled-off necrosis, but the place and the use of LAMS should be studied to avoid and reduce the risks of complications...
April 2018: Gastrointestinal Endoscopy Clinics of North America
Linnea A Weiss, Marta Nieto
Cux1 and Cux2 are the vertebrate members of a family of homeodomain transcription factors (TF) containing Cut repeat DNA-binding sequences. Perturbation of their expression has been implicated in a wide variety of diseases and disorders, ranging from cancer to autism spectrum disorder (ASD). Within the nervous system, both genes are expressed during neurogenesis and in specific neuronal subpopulations. Their role during development and circuit specification is discussed here, with a particular focus on the cortex where their restricted expression in pyramidal neurons of the upper layers appears to be responsible for many of the specialized functions of these cells, and where their functions have been extensively investigated...
March 5, 2018: Brain Research
Yang Zhao, Yajing Liu, Li Lin, Qiong Huang, Wanming He, Shuyi Zhang, Shumin Dong, Zhaowei Wen, Jinjun Rao, Wangjun Liao, Min Shi
BACKGROUND: Metabolic plasticity has been increasingly thought to be a determinant of tumor growth and metastasis. MACC1, a transcriptional regulator of MET, was recognized as an oncogene in gastric cancer (GC); however, its transcriptional or post-translational regulation was not clear. We previously reported the metabolic role of MACC1 in glycolysis to promote GC progression. MACC1-AS1 is the antisense lncRNA of MACC1, yet its function was previously unknown. METHODS: We profiled and analyzed the expression of MACC1-AS1 utilizing the TCGA database as well as in situ hybridization using 123 pairs of GC tissues and matched adjacent normal gastric mucosa tissues (ANTs)...
March 6, 2018: Molecular Cancer
Luca Parisi, Elisabetta Gini, Denisa Baci, Marco Tremolati, Matteo Fanuli, Barbara Bassani, Giampietro Farronato, Antonino Bruno, Lorenzo Mortara
Macrophages are key cellular components of the innate immunity, acting as the main player in the first-line defence against the pathogens and modulating homeostatic and inflammatory responses. Plasticity is a major feature of macrophages resulting in extreme heterogeneity both in normal and in pathological conditions. Macrophages are not homogenous, and they are generally categorized into two broad but distinct subsets as either classically activated (M1) or alternatively activated (M2). However, macrophages represent a continuum of highly plastic effector cells, resembling a spectrum of diverse phenotype states...
2018: Journal of Immunology Research
Murat Alp, Francis A Cucinotta
Exposure to heavy-ion radiation during cancer treatment or space travel may cause cognitive detriments that have been associated with changes in neuron morphology and plasticity. Observations in mice of reduced neuronal dendritic complexity have revealed a dependence on radiation quality and absorbed dose, suggesting that microscopic energy deposition plays an important role. In this work we used morphological data for mouse dentate granular cell layer (GCL) neurons and a stochastic model of particle track structure and microscopic energy deposition (ED) to develop a predictive model of high-charge and energy (HZE) particle-induced morphological changes to the complex structures of dendritic arbors...
March 2018: Radiation Research
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