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https://www.readbyqxmd.com/read/28938667/lncrnas-as-prognostic-molecular-biomarkers-in-hepatocellular-carcinoma-a-systematic-review-and-meta-analysis
#1
Chuqian Zheng, Xiuxia Liu, Leifeng Chen, Zheng Xu, Jianghua Shao
The latest studies have shown that long non-coding RNAs (lncRNAs) may be considered markers as their expression levels were abnormal in cancer and can be used as a molecular biomarker for the potential assessment of cancer prognosis. In this study, we aimed to assess the prognostic value of lncRNA as marker of patients with hepatocellular carcinoma. We performed a detailed search of the PubMed and Embase databases for articles on the prognostic value of various lncRNAs in HCC. We then carefully extracted the relevant data from the articles, and we used the meta-analysis method to analyze these results; heterogeneity and publication bias were also evaluated...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938636/patz1-is-a-new-prognostic-marker-of-glioblastoma-associated-with-the-stem-like-phenotype-and-enriched-in-the-proneural-subtype
#2
Elia Guadagno, Michela Vitiello, Paola Francesca, Gaetano Calì, Federica Caponnetto, Daniela Cesselli, Simona Camorani, Giorgio Borrelli, Marialuisa Califano, Paolo Cappabianca, Claudio Arra, Elvira Crescenzi, Laura Cerchia, Maria Laura Del Basso De Caro, Monica Fedele
Glioblastoma (GBM), the most malignant of the brain tumors, has been classified on the basis of molecular signature into four subtypes: classical, mesenchymal, proneural and neural, among which the mesenchymal and proneural subtypes have the shortest and longest survival, respectively. Here we show that the transcription factor PATZ1 gene is upregulated in gliomas compared to normal brain and, among GBMs, is particularly enriched in the proneural subtype and co-localize with stemness markers. Accordingly, in GBM-derived glioma-initiating stem cells (GSCs) PATZ1 is overexpressed compared to differentiated tumor cells and its expression significantly correlates with the characteristic stem cell capacity to grow as neurospheres in vitro...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938594/microrna-expression-levels-as-diagnostic-biomarkers-for-intraductal-papillary-mucinous-neoplasm
#3
Lei Wang, Jianming Zheng, Chang Sun, Li Wang, Gang Jin, Lei Xin, Zhendong Jin, Dong Wang, Zhaoshen Li
Intraductal papillary mucinous neoplasms (IPMNs) are deadly exocrine mucinous tumors. Currently the molecular features and diagnostic markers of IPMNs are not well understood. In this study, we performed microRNA (miRNA) profiling assays to study the potential roles of miRNAs in IPMNs using 78 cases of IPMN patients and controls. When comparing the miRNA expression between IPMN patient samples and controls, we found that miR-210, miR-223, miR-221, miR-155 and miR-187 were differentially expressed in normal pancreas and IPMNs...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938555/exosomes-of-invasive-urothelial-carcinoma-cells-are-characterized-by-a-specific-mirna-expression-signature
#4
Sophie Baumgart, Sebastian Hölters, Carsten-Henning Ohlmann, Rainer Bohle, Michael Stöckle, Marie Stampe Ostenfeld, Lars Dyrskjøt, Kerstin Junker, Joana Heinzelmann
Muscle-invasive bladder cancer (MIBC) represents a highly aggressive tumor type compared to non-muscle-invasive tumors. MIBC is characterized by specific molecular alterations, which may also modulate extracellular tumorigenic effects. Tumor-associated exosomes, especially exosomal miRNAs, are important regulators in the interaction between tumor cells and tumor microenvironment by affecting tumor-promoting processes in target cells. It is important to analyze whether their exosomal patterns also reflect the specific molecular characteristics of MIBC...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938549/long-non-coding-rnas-may-serve-as-biomarkers-in-breast-cancer-combined-with-primary-lung-cancer
#5
Xianfeng Ding, Yuhan Zhang, Hongjian Yang, Weimin Mao, Bo Chen, Shifeng Yang, Xiaowen Ding, Dehong Zou, Wenju Mo, Xiangming He, Xiping Zhang
Long non-coding RNAs (lncRNAs) have been shown to play important regulatory role in certain type of cancers biology, including breast and lung cancers. However, the lncRNA expression in breast cancer combined with primary lung cancer remains unknown. In this study, databases of the Cancer Genome Atlas (TCGA) and the lncRNA profiler of contained candidate 192 lncRNAs were utilized. 11 lncRNAs were differentially expressed in breast cancer, 9 candidate lncRNAs were differentially expressed in lung cancer. In order to find the aberrant expression of lncRNAs in breast cancer combined with primary lung cancer, seven samples of primary breast cancer and lung cancer were studied for the expression of selected lncRNAs...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938489/prognostic-classifier-based-on-genome-wide-dna-methylation-profiling-in-well-differentiated-thyroid-tumors
#6
Mariana Bisarro Dos Reis, Mateus Camargo Barros-Filho, Fábio Albuquerque Marchi, Caroline Moraes Beltrami, Hellen Kuasne, Clóvis Antônio Lopes Pinto, Srikant Ambatipudi, Zdenko Herceg, Luiz Paulo Kowalski, Silvia Regina Rogatto
Context: Even though the majority of well-differentiated thyroid cancer (WDTC) is indolent, a number of cases display an aggressive behavior. Cumulative evidences have suggested that the deregulation of DNA methylation has the potential to point out molecular markers associated with worse prognosis. Objective: To identify a prognostic epigenetic signature in thyroid cancer. Design: Genome-wide DNA methylation assays (450k platform, Illumina) were performed in a cohort of 50 non-neoplastic thyroid tissues (NT), 17 benign thyroid lesions (BTL) and 74 thyroid carcinomas (60 papillary, 8 follicular, 2 Hürthle cell, 1 poorly differentiated and 3 anaplastic)...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938477/growth-hormone-and-the-epithelial-to-mesenchymal-transition
#7
Alison L Brittain, Reetobrata Basu, Yanrong Qian, John J Kopchick
Context: Previous studies have implicated growth hormone (GH) in the progression of several cancers, including breast, colorectal and pancreatic. A mechanism by which GH may play this role in cancer is through the induction of the epithelial-to-mesenchymal transition (EMT). During the EMT process, epithelial cells lose their defining phenotypes causing loss of cellular adhesion and increased cell migration. This review aims to carefully summarize the previous two decades of research that points to GH as an initiator of EMT, in both cancerous and non-cancerous tissues...
August 4, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938435/the-role-of-sequential-bmp-signaling-in-directing-human-embryonic-stem-cells-to-bipotential-gonadal-cells
#8
Kirsi Sepponen, Karolina Lundin, Katri Knuus, Pia Väyrynen, Taneli Raivio, Juha S Tapanainen, Timo Tuuri
Context: Human gonads arise as a pair of epithelial ridges on the surface of intermediate mesoderm (IM)-derived mesonephros. Toxic environmental factors and mutations in various genes are known to disturb normal gonadal development, but due to a lack of suitable in vitro models, detailed studies characterizing the molecular basis of the observed defects have not been performed. Objective: Our objective was to establish an in vitro method for studying differentiation of bipotential gonadal progenitors using human embryonic stem cells (hESCs), and to investigate the role of bone morphogenetic protein (BMP) in gonadal differentiation...
August 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938159/lunatic-fringe-and-p53-cooperatively-suppress-mesenchymal-stem-like-breast-cancer
#9
Wen-Cheng Chung, Shubing Zhang, Lavanya Challagundla, Yunyun Zhou, Keli Xu
Claudin-low breast cancer (CLBC) is a poor prognosis molecular subtype showing stemness and mesenchymal features. We previously discovered that deletion of a Notch signaling modulator, Lunatic Fringe (Lfng), in the mouse mammary gland induced a subset of tumors resembling CLBC. Here we report that deletion of one copy of p53 on this background not only accelerated mammary tumor development but also led to a complete penetrance of the mesenchymal stem-like phenotype. All mammary tumors examined in the Lfng/p53 compound mutant mice displayed a mesenchymal/spindloid pathology...
September 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28938034/influence-of-partial-o%C3%A2-pressure-on-the-adhesion-proliferation-and-osteogenic-differentiation-of-human-dental-pulp-stem-cells-on-%C3%AE-tricalcium-phosphate-scaffold
#10
Jose Viña-Almunia, Cristina Mas-Bargues, Consuelo Borras, Juan Gambini, Marya El Alami, Jorge Sanz-Ros, Miguel Peñarrocha, Jose Vina
PURPOSE: To analyze, in vitro, the influence of O₂ pressure on the adhesion, proliferation, and osteogenic differentiation of human dental pulp stem cells (DPSC) on β-tricalcium phosphate (β-TCP) scaffold. MATERIALS AND METHODS: DPSC, positive for the molecular markers CD133, Oct4, Nestin, Stro-1, and CD34, and negative for CD45, were isolated from extracted third molars. Experiments were started by seeding 200,000 cells on β-TCP cultured under 3% or 21% O₂ pressure...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28937662/glucose-responsive-insulin-by-molecular-and-physical-design
#11
Naveed A Bakh, Abel B Cortinas, Michael A Weiss, Robert S Langer, Daniel G Anderson, Zhen Gu, Sanjoy Dutta, Michael S Strano
The concept of a glucose-responsive insulin (GRI) has been a recent objective of diabetes technology. The idea behind the GRI is to create a therapeutic that modulates its potency, concentration or dosing relative to a patient's dynamic glucose concentration, thereby approximating aspects of a normally functioning pancreas. From the perspective of the medicinal chemist, the GRI is also important as a generalized model of a potentially new generation of therapeutics that adjust potency in response to a critical therapeutic marker...
September 22, 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28937589/viral-cellular-dna-junctions-as-molecular-markers-for-assessing-intra-tumor-heterogeneity-in-cervical-cancer-and-for-the-detection-of-circulating-tumor-dna
#12
Katrin Carow, Mandy Gölitz, Maria Wolf, Norman Häfner, Lars Jansen, Heike Hoyer, Elisabeth Schwarz, Ingo B Runnebaum, Matthias Dürst
The development of cervical cancer is frequently accompanied by the integration of human papillomaviruses (HPV) DNA into the host genome. Viral-cellular junction sequences, which arise in consequence, are highly tumor specific. By using these fragments as markers for tumor cell origin, we examined cervical cancer clonality in the context of intra-tumor heterogeneity. Moreover, we assessed the potential of these fragments as molecular tumor markers and analyzed their suitability for the detection of circulating tumor DNA in sera of cervical cancer patients...
September 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28936983/teaching-practice-and-experiences-of-verifying-the-three-laws-of-genetics-based-on-the-sslp-marker-analysis
#13
Xue-Ying Huang, Kai Fan, Yan-Fang Ye, Bin Wang, Wei-Ren Wu, Tao Lan
We explored the practical effect of the genetic analysis of simple sequence length polymorphism (SSLP) molecular markers in rice in the genetics lab course. Two parents and their F2 population were analyzed and detected with three SSLP molecular markers that located on two chromosomes of the rice genome. The markers' genotype data were used to verify the three laws of genetics, including segregation, independent assortment and linkage and crossing-over. Our practice has proved not only beneficial to deepen students' understandings about the three laws of genetics, but also conducive to cultivate students' interests in research and innovation and improve their skills and comprehensive analysis abilities...
September 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28936923/egfr-pathway-subgroups-in-chilean-colorectal-cancer-patients-detected-by-mutational-and-expression-profiles-associated-to-different-clinicopathological-features
#14
Karin Alvarez, Paulina Orellana, Cynthia Villarroel, Luis Contreras, Hiroshi Kawachi, Maki Kobayashi, Ana Maria Wielandt, Marjorie De la Fuente, Juan Carlos Triviño, Udo Kronberg, Pilar Carvallo, Francisco López-Köstner
Colorectal cancer is a multistep process affecting several signaling pathways including EGFR (epidermal growth factor receptor), a therapeutic target for metastatic disease. Our aim was to characterize the mutational and expression profiles of the EGFR pathway in colorectal tumors and to integrate these results according to five previously defined groups. We screened seven genes for mutations ( KRAS-BRAF-PIK3CA-PIK3R1-AKT1-MAP2K1-PTEN) and six proteins (EGFR-p110α-p85α-PTEN-phosphoAKT-phosphoMEK1) by immunohistochemistry, PTEN deletion, and MSI...
September 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28936467/peroxisome-motility-measurement-and-quantification-assay
#15
Jeremy Metz, Inês G Castro, Michael Schrader
Organelle movement, distribution and interaction contribute to the organisation of the eukaryotic cell. Peroxisomes are multifunctional organelles which contribute to cellular lipid metabolism and ROS homeostasis. They distribute uniformly in mammalian cells and move along microtubules via kinesin and dynein motors. Their metabolic cooperation with mitochondria and the endoplasmic reticulum (ER) is essential for the β-oxidation of fatty acids and the synthesis of myelin lipids and polyunsaturated fatty acids...
September 5, 2017: Bio-protocol
https://www.readbyqxmd.com/read/28935965/aromatic-side-chain-conformational-switch-on-the-surface-of-the-rna-recognition-motif-enables-rna-discrimination
#16
Nana Diarra Dit Konté, Miroslav Krepl, Fred F Damberger, Nina Ripin, Olivier Duss, Jiří Šponer, Frédéric H-T Allain
The cyclooxygenase-2 is a pro-inflammatory and cancer marker, whose mRNA stability and translation is regulated by the CUG-binding protein 2 interacting with AU-rich sequences in the 3' untranslated region. Here, we present the solution NMR structure of CUG-binding protein 2 RRM3 in complex with 5'-UUUAA-3' originating from the COX-2 3'-UTR. We show that RRM3 uses the same binding surface and protein moieties to interact with AU- and UG-rich RNA motifs, binding with low and high affinity, respectively. Using NMR spectroscopy, isothermal titration calorimetry and molecular dynamics simulations, we demonstrate that distinct sub-states characterized by different aromatic side-chain conformations at the RNA-binding surface allow for high- or low-affinity binding with functional implications...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935612/use-of-aflp-for-the-study-of-eukaryotic-pathogens-affecting-humans
#17
REVIEW
Carlos M Restrepo, Alejandro Llanes, Ricardo Lleonart
Amplified fragment length polymorphism (AFLP) is a genotyping technique based on PCR amplification of specific restriction fragments from a particular genome. The methodology has been extensively used in plant biology to solve a variety of scientific questions, including taxonomy, molecular epidemiology, systematics, population genetics, among many others. The AFLP share advantages and disadvantages with other types of molecular markers, being particularly useful in organisms with no previous DNA sequence knowledge...
September 18, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28935259/module-based-systematic-construction-of-plasmids-for-episomal-gene-expression-in-fission-yeast
#18
Keita Kiriya, Hayato Tsuyuzaki, Masamitsu Sato
The fission yeast Schizosaccharomyces pombe is a powerful model organism for cell biology and molecular biology, as genetic manipulation is easily achieved. Introduction of exogenous genes cloned in episomal plasmids into yeast cells can be done through well-established transformation methods. For expression of genes in S. pombe cells, the multi-copy plasmid pREP1 and its derivatives, including pREP41 and pREP81, have been widely used as vectors. Although recent advancement of technology brought a number of useful genetic elements such as new promoters, selection marker genes and fluorescent protein tags, introduction of those elements into conventional pREP1 requires a large commitment of both time and effort because cloning procedures need to be repeated until the final products are constructed...
September 18, 2017: Gene
https://www.readbyqxmd.com/read/28935132/acute-leukemia-patients-needs-qualitative-findings-and-opportunities-for-early-palliative-care
#19
Nathan A Boucher, Kimberly S Johnson, Thomas W LeBlanc
BACKGROUND AND OBJECTIVE: Patients with acute leukemias likely have needs that palliative care can respond to, yet little is known about specific challenges they face, particularly during active treatment. We examined acute myeloid leukemia (AML) patients' expressed challenges and supports following intensive induction chemotherapy. We aimed to understand opportunities for palliative care interventions in this population. METHODS: A qualitative study of AML patients with high-risk disease at Duke University Hospital, Durham, NC...
September 18, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28934714/efficacy-of-dehydroepiandrosterone-dhea-to-overcome-the-effect-of-ovarian-ageing-ditto-a-proof-of-principle-double-blinded-randomized-placebo-controlled-trial
#20
Amarin Narkwichean, Walid Maalouf, Miriam Baumgarten, Lukasz Polanski, Nick Raine-Fenning, Bruce Campbell, Kannamannadiar Jayaprakasan
OBJECTIVE: To evaluate the effect of DHEA supplementation on In-Vitro Fertilisation (IVF) outcome as assessed by ovarian response, oocyte developmental competence and live birth rates in women predicted to have poor ovarian reserve (OR). The feasibility of conducting a large trial is also assessed by evaluating the recruitment rates and compliance of the recruited participants with DHEA/placebo intake and follow-up rates. STUDY DESIGN: A single centre, double blinded, placebo controlled, randomized trial was performed over two years with 60 women undergoing in-vitro fertilisation (IVF)...
September 8, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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