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Current Genomics

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https://www.readbyqxmd.com/read/28603453/centromeric-non-coding-transcription-opening-the-black-box-of-chromosomal-instability
#1
REVIEW
Rodrigo Cáceres-Gutiérrez, Luis A Herrera
In eukaryotes, mitosis is tightly regulated to avoid the generation of numerical chromosome aberrations, or aneuploidies. The aneuploid phenotype is a consequence of chromosomal instability (CIN), i.e., an enhanced rate of chromosome segregation errors, which is frequently found in cancer cells and is associated with tumor aggressiveness and increased tumor cell survival potential. To avoid the generation of aneuploidies, cells rely on the spindle assembly checkpoint (SAC), a widely conserved mechanism that protects the genome against this type of error...
June 2017: Current Genomics
https://www.readbyqxmd.com/read/28367077/protein-and-genetic-composition-of-four-chromatin-types-in-drosophila-melanogaster-cell-lines
#2
Lidiya V Boldyreva, Fyodor P Goncharov, Olga V Demakova, Tatyana Yu Zykova, Victor G Levitsky, Nikolay N Kolesnikov, Alexey V Pindyurin, Valeriy F Semeshin, Igor F Zhimulev
BACKGROUND: Recently, we analyzed genome-wide protein binding data for the Drosophila cell lines S2, Kc, BG3 and Cl.8 (modENCODE Consortium) and identified a set of 12 proteins enriched in the regions corresponding to interbands of salivary gland polytene chromosomes. Using these data, we developed a bioinformatic pipeline that partitioned the Drosophila genome into four chromatin types that we hereby refer to as aquamarine, lazurite, malachite and ruby. RESULTS: Here, we describe the properties of these chromatin types across different cell lines...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367076/genetic-imbalance-in-patients-with-cervical-artery-dissection
#3
Caspar Grond-Ginsbach, Bowang Chen, Michael Krawczak, Rastislav Pjontek, Philip Ginsbach, Yanxiang Jiang, Shérine Abboud, Marie-Luise Arnold, Anna Bersano, Tobias Brandt, Valeria Caso, Stéphanie Debette, Martin Dichgans, Andreas Geschwendtner, Giacomo Giacalone, Juan-José Martin, Antti J Metso, Tiina M Metso, Armin J Grau, Manja Kloss, Christoph Lichy, Alessandro Pezzini, Christopher Traenka, Stefan Schreiber, Vincent Thijs, Emmanuel Touzé, Elisabetta Del Zotto, Turgut Tatlisumak, Didier Leys, Philippe A Lyrer, Stefan T Engelter
BACKGROUND: Genetic and environmental risk factors are assumed to contribute to the susceptibility to cervical artery dissection (CeAD). To explore the role of genetic imbalance in the etiology of CeAD, copy number variants (CNVs) were identified in high-density microarrays samples from the multicenter CADISP (Cervical Artery Dissection and Ischemic Stroke Patients) study and from control subjects from the CADISP study and the German PopGen biobank. Microarray data from 833 CeAD patients and 2040 control subjects (565 subjects with ischemic stroke due to causes different from CeAD and 1475 disease-free individuals) were analyzed...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367075/anticancer-natural-compounds-as-epigenetic-modulators-of-gene-expression
#4
REVIEW
Edward A Ratovitski
Accumulating evidence shows that hallmarks of cancer include: "genetic and epigenetic alterations leading to inactivation of cancer suppressors, overexpression of oncogenes, deregulation of intracellular signaling cascades, alterations of cancer cell metabolism, failure to undergo cancer cell death, induction of epithelial to mesenchymal transition, invasiveness, metastasis, deregulation of immune response and changes in cancer microenvironment, which underpin cancer development". Natural compounds as bioactive ingredients isolated from natural sources (plants, fungi, marine life forms) have revolutionized the field of anticancer therapeutics and rapid developments in preclinical studies are encouraging...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367074/anti-cancer-phytometabolites-targeting-cancer-stem-cells
#5
REVIEW
Heron F V Torquato, Márcia I Goettert, Giselle Z Justo, Edgar J Paredes-Gamero
Medicinal plants are a plentiful source of bioactive molecules with much structural diversity. In cancer treatment, molecules obtained from plants represent an attractive alternative to other treatments because several plant-derived compounds have exhibited lower toxicity and higher selectivity against cancer cells. In this review, we focus on the possible application of bioactive molecules obtained from plants against more primitive cell populations in cancers, cancer stem cells. Cancer stem cells are present in several kinds of tumors and are responsible for recurrences and metastases...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367073/natural-compounds-as-modulators-of-non-apoptotic-cell-death-in-cancer-cells
#6
Luis Miguel Guamán-Ortiz, Maria Isabel Ramirez Orellana, Edward A Ratovitski
Cell death is an innate capability of cells to be removed from microenvironment, if and when they are damaged by multiple stresses. Cell death is often regulated by multiple molecular pathways and mechanism, including apoptosis, autophagy, and necroptosis. The molecular network underlying these processes is often intertwined and one pathway can dynamically shift to another one acquiring certain protein components, in particular upon treatment with various drugs. The strategy to treat human cancer ultimately relies on the ability of anticancer therapeutics to induce tumor-specific cell death, while leaving normal adjacent cells undamaged...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367072/natural-compounds-as-modulators-of-cell-cycle-arrest-application-for-anticancer-chemotherapies
#7
REVIEW
Natalia Bailon-Moscoso, Gabriela Cevallos-Solorzano, Juan Carlos Romero-Benavides, Maria Isabel Ramirez Orellana
Natural compounds from various plants, microorganisms and marine species play an important role in the discovery novel components that can be successfully used in numerous biomedical applications, including anticancer therapeutics. Since uncontrolled and rapid cell division is a hallmark of cancer, unraveling the molecular mechanisms underlying mitosis is key to understanding how various natural compounds might function as inhibitors of cell cycle progression. A number of natural compounds that inhibit the cell cycle arrest have proven effective for killing cancer cells in vitro, in vivo and in clinical settings...
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28367071/anticancer-natural-compounds-molecular-mechanisms-and-functions-%C3%A2-part-ii
#8
Edward A Ratovitski
No abstract text is available yet for this article.
April 2017: Current Genomics
https://www.readbyqxmd.com/read/28503092/management-of-gene-variants-of-unknown-significance-analysis-method-and-risk-assessment-of-the-vhl-mutation-p-p81s-c-241c-t
#9
REVIEW
Daniela Alosi, Marie Luise Bisgaard, Sophie Nowak Hemmingsen, Lotte Nylandsted Krogh, Hanne Birte Mikkelsen, Marie Louise Mølgaard Binderup
BACKGROUND: Evaluation of the pathogenicity of a gene variant of unknown significance (VUS) is crucial for molecular diagnosis and genetic counseling, but can be challenging. This is especially so in phenotypically variable diseases, such as von Hippel-Lindau disease (vHL). vHL is caused by germline mutations in the VHL gene, which predispose to the development of multiple tumors such as central nervous system hemangioblastomas and renal cell carcinoma (RCC). OBJECTIVE: We propose a method for the evaluation of VUS pathogenicity through our experience with the VHL missense mutation c...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503091/natural-compounds-as-anticancer-agents-targeting-dna-topoisomerases
#10
REVIEW
Chetan Kumar Jain, Hemanta Kumar Majumder, Susanta Roychoudhury
DNA topoisomerases are important cellular enzymes found in almost all types of living cells (eukaryotic and prokaryotic). These enzymes are essential for various DNA metabolic processes e.g. replication, transcription, recombination, chromosomal decatenation etc. These enzymes are important molecular drug targets and inhibitors of these enzymes are widely used as effective anticancer and antibacterial drugs. However, topoisomerase inhibitors have some therapeutic limitations and they exert serious side effects during cancer chemotherapy...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503090/compounds-from-celastraceae-targeting-cancer-pathways-and-their-potential-application-in-head-and-neck-squamous-cell-carcinoma-a-review
#11
REVIEW
Camila Hernandes, Ana Maria Soares Pereira, Patricia Severino
Squamous cell carcinoma of the head and neck is one of the most common cancer types worldwide. It initiates on the epithelial lining of the upper aerodigestive tract, at most instances as a consequence of tobacco and alcohol consumption. Treatment options based on conventional therapies or targeted therapies under development have limited efficacy due to multiple genetic alterations typically found in this cancer type. Natural products derived from plants often possess biological activities that may be valuable in the development of new therapeutic agents for cancer treatment...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503089/anticancer-chemodiversity-of-ranunculaceae-medicinal-plants-molecular-mechanisms-and-functions
#12
REVIEW
Da-Cheng Hao, Chun-Nian He, Jie Shen, Pei-Gen Xiao
The buttercup family, Ranunculaceae, comprising more than 2,200 species in at least 62 genera, mostly herbs, has long been used in folk medicine and worldwide ethnomedicine since the beginning of human civilization. Various medicinal phytometabolites have been found in Ranunculaceae plants, many of which, such as alkaloids, terpenoids, saponins, and polysaccharides, have shown anti-cancer activities in vitro and in vivo. Most concerns have been raised for two epiphany molecules, the monoterpene thymoquinone and the isoquinoline alkaloid berberine...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503088/restoring-trail-induced-apoptosis-using-naturopathy-hercules-joins-hand-with-nature-to-triumph-over-lernaean-hydra
#13
REVIEW
Ammad Ahmad Farooqi, Cosmo Damiano Gadaleta, Girolamo Ranieri, Sundas Fayyaz, Ilaria Marech
Cancer is a multifaceted disease. Our deepened knowledge about genetic and biological mechanisms of cancer cells presents an opportunity to explore the inter-individual differences in the body's ability to metabolize and respond to different nutrients. It is becoming progressively more understandable that the deregulation of several signaling pathways and the alterations in apoptotic response are some of the major determinants that underpin carcinogenesis. Tumor necrosis factor-Related Apoptosis-Inducing Ligand (TRAIL)-mediated signaling has gained a remarkable appreciation because of its ability to selectively induce apoptosis in cancer cells leaving normal cells intact...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503087/established-human-cell-lines-as-models-to-study-anti-leukemic-effects-of-flavonoids
#14
EDITORIAL
Katrin Sak, Hele Everaus
Despite the extensive work on pathological mechanisms and some recent advances in the treatment of different hematological malignancies, leukemia continues to present a significant challenge being frequently considered as incurable disease. Therefore, the development of novel therapeutic agents with high efficacy and low toxicity is urgently needed to improve the overall survival rate of patients. In this comprehensive review article, the current knowledge about the anticancer activities of flavonoids as plant secondary polyphenolic metabolites in the most commonly used human established leukemia cell lines (HL-60, NB4, KG1a, U937, THP-1, K562, Jurkat, CCRF- CEM, MOLT-3, and MOLT-4) is compiled, revealing clear anti-proliferative, pro-apoptotic, cell cycle arresting, and differentiation inducing effects for certain compounds...
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28503086/anticancer-natural-compounds-molecular-mechanisms-and-functions-part-i
#15
EDITORIAL
Edward A Ratovitski
No abstract text is available yet for this article.
February 2017: Current Genomics
https://www.readbyqxmd.com/read/28217009/meta-analysis-reveals-no-association-of-dnmt3b-149-c-t-gene-polymorphism-with-overall-cancer-risk
#16
Raju Kumar Mandal, Shafiul Haque, Mohd Wahid, Arshad Jawed, Naseem Akhter, Md Ekhlaque Ahmed Khan, Aditya Kumar Panda, Mohammed Yahya Areeshi, Sajad Ahmad Dar
BACKGROUND: DNA methyltransferase-3B (DNMT3B) plays a key role in establishment and maintenance of genomic methylation patterns. Polymorphism in promoter region -149 C>T (C46359T) of DNMT3B gene may alter DNMT3B activity which leads to increased susceptibility to cancer. Inconsistent results regarding this have been reported in a number of studies. OBJECTIVE: To carry out a meta-analysis of the studies reported to assess the precise relationship between the DNMT3B -149 C>T polymorphism and the overall cancer risk...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28217008/toxicogenomics-to-evaluate-endocrine-disrupting-effects-of-environmental-chemicals-using-the-zebrafish-model
#17
Karina Caballero-Gallardo, Jesus Olivero-Verbel, Jennifer L Freeman
The extent of our knowledge on the number of chemical compounds related to anthropogenic activities that can cause damage to the environment and to organisms is increasing. Endocrine disrupting chemicals (EDCs) are one group of potentially hazardous substances that include natural and synthetic chemicals and have the ability to mimic endogenous hormones, interfering with their biosynthesis, metabolism, and normal functions. Adverse effects associated with EDC exposure have been documented in aquatic biota and there is widespread interest in the characterization and understanding of their modes of action...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28217007/computational-tools-for-genomic-studies-in-plants
#18
Manuel Martinez
In recent years, the genomic sequence of numerous plant species including the main crop species has been determined. Computational tools have been developed to deal with the issue of which plant has been sequenced and where is the sequence hosted. In this mini-review, the databases for genome projects, the databases created to host species/clade projects and the databases developed to perform plant comparative genomics are revised. Because of their importance in modern research, an in-depth analysis of the plant comparative genomics databases has been performed...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28217006/mutagenesis-and-tilling-to-dissect-gene-function-in-plants
#19
Zerihun Tadele
Mutagenesis can be random or targeted and occur by nature or artificially by humans. However, the bulk of mutagenesis employed in plants are random and caused by physical agents such as x-ray and gamma-ray or chemicals such as ethyl-methane sulfonate (EMS). Researchers are interested in first identifying these mutations and/or polymorphisms in the genome followed by investigating their effects in the plant function as well as their application in crop improvement. The high-throughput technique called TILLING (Targeting Induced Local Lesion IN Genomes) has been already established and become popular for identifying candidate mutant individuals harboring mutations in the gene of interest...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28217005/chromatin-based-epigenetic-regulation-of-plant-abiotic-stress-response
#20
Garima Pandey, Namisha Sharma, Pranav Pankaj Sahu, Manoj Prasad
Plants are continuously exposed to various abiotic and biotic factors limiting their growth and reproduction. In response, they need various sophisticated ways to adapt to adverse environmental conditions without compromising their proper development, reproductive success and eventually survival. This requires an intricate network to regulate gene expression at transcriptional and post-transcriptional levels, including epigenetic switches. Changes in chromatin modifications such as DNA and histone methylation have been observed in plants upon exposure to several abiotic stresses...
December 2016: Current Genomics
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