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Recent Advances of Epigenetics in Crop Biotechnology

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889198542 Year: Pages: 189 DOI: 10.3389/978-2-88919-854-2 Language: English
Publisher: Frontiers Media SA
Subject: Botany --- Science (General)
Added to DOAB on : 2016-01-19 14:05:46
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Epigenetics is a new field that explains gene expression at the chromatin structure and organization level. Three principal epigenetic mechanisms are known and hundreds of combinations among them can develop different phenotypic characteristics. DNA methylation, histone modifications and small RNAs have been identified, and their functions are being studied in order to understand the mechanisms of interaction and regulation among the different biological processes in plants. Although, fundamental epigenetic mechanisms in crop plants are beginning to be elucidated, the comprehension of the different epigenetic mechanisms, by which plant gene regulation and phenotype are modified, is a major topic to develop in the near future in order to increase crop productivity. Thus, the importance of epigenetics in improving crop productivity is undoubtedly growing. Current research on epigenetics suggest that DNA methylation, histone modifications and small RNAs are involved in almost every aspect of plant life including agronomically important traits such as flowering time, fruit development, responses to environmental factors, defense response and plant growth. The aim of this Research Topic is to explore the recent advances concerning the role of epigenetics in crop biotechnology, as well as to enhance and promote interactions among high quality researchers from different disciplines such as genetics, cell biology, pathology, microbiology, and evolutionary biology in order to join forces and decipher the epigenetic mechanisms in crop productivity.

Novel roles of non-coding brain RNAs in health and disease

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889193097 Year: Pages: 213 DOI: 10.3389/978-2-88919-309-7 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2016-02-05 17:24:33
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Non-coding RNAs (ncRNAs), and in particular microRNAs are rapidly becoming the focus of research interest in numerous basic and translational fields, including brain research; and their importance for many aspects in brain functioning merits special discussion. The wide-scope, multi-targeted and highly efficient manner of ncRNA regulatory activities draws attention to this topic by many, but the available research and analysis tools and experimental protocols are still at their infancy, and calls for special discussion given their importance for many aspects in brain functioning. This eBook is correspondingly focused on the search for, identification and exploration of those non-coding RNAs whose activities modulate the multi-leveled functions of the eukaryotic brain. The different articles strive to cover novel approaches for identifying and establishing ncRNA-target relationships, provide state of the art reports of the affected neurotransmission pathways, describe inherited and acquired changes in ncRNA functioning and cover the use of ncRNA mimics and blockade tools for interference with their functions in health and disease of the brain. Non-coding RNAs are here to stay, and this exciting eBook provides a glimpse into their impact on our brain’s functioning at the physiology, cell biology, behavior and immune levels.

Gene Silencing and Editing Strategies for Neurodegenerative Diseases

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889455515 Year: Pages: 115 DOI: 10.3389/978-2-88945-551-5 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Neurology
Added to DOAB on : 2019-01-23 14:53:42
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Neurodegenerative diseases (NDs) are a heterogeneous group of disorders affecting the central nervous system. Despite significant differences in their causes, neuropathological abnormalities, and clinical outcomes, some similarities can be found among them, as for example: 1) frequent aggregation and deposition of misfolded proteins, 2) common molecular mechanisms leading to neurodegeneration, and 3) certain overlap in symptoms and clinical features. To date, there is no cure that could stop or delay the progression of these diseases. The advent of advanced gene therapy techniques such as gene silencing and gene editing opened a new avenue for the development of therapeutic strategies for NDs.The discovery of the RNA interference (RNAi) mechanism, in 1998, by Andrew Fire and Craig Mello allowed an important boost to the gene therapy field, providing a potential therapeutic strategy to treat inherited dominant genetic disorders. The use of small RNA sequences to control the expression of disease-causing genes rapidly implemented in the preclinical studies for different diseases. In the field of NDs, several successful studies using this technology proved its potential as a therapeutic option. However, issues like the type of delivery system (non-viral versus viral) or the potential toxicity of the small RNA molecules, made the translation of gene silencing therapeutics to human application very slow and difficult.Recently, a new hope in the gene therapy field emerged with the development of gene editing techniques like TALENs or CRISPR/Cas9 systems. The opportunity of editing or deleting gene sequences drove the scientific community euphoric, with an enormous increase in the number of published studies using this type of techniques. Recently, the first clinical trial using one of these systems was approved in China. For NDs, gene-editing technology also represents an important therapeutic option, and the first preclinical studies are now being published, showing the potential accomplishment for this technology.

The Epithelial-to-Mesenchymal Transition (EMT) in Cancer

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ISBN: 9783038427933 9783038427940 Year: Pages: VI, 254 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biology
Added to DOAB on : 2018-04-27 16:09:54
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The epithelial-to-mesenchymal transition (EMT) is a highly dynamic process with multiple transitional states, by which epithelial cells can convert into a mesenchymal phenotype. This process involves loss of cellular adhesion and cellular polarity, and an improvement in migratory and invasive properties. It occurs during normal embryonic development, tissue regeneration, organ fibrosis, and wound healing. It is also involved in tumor progression with metastatic expansion, and plays a major role in resistance to cancer treatment. In cancers, EMT inducers are hypoxia, cytokines and growth factors secreted by the tumor microenvironment, stroma crosstalk, metabolic changes, innate and adaptive immune responses, and treatment with antitumor drugs. Switch in gene expression from epithelial to mesenchymal phenotype is triggered by complex regulatory networks involving transcriptional control, non-coding RNAs, chromatin remodeling and epigenetic modifications, alternative splicing, post-translational regulation, protein stability and subcellular localization. Reversion of EMT, the mesenchymal-to-epithelial transition (MET), affects circulating cancer cells when they reach a desirable metastatic niche to develop secondary tumors. More knowledge and control of EMT to MET is necessary and will be beneficial for patients for cancer treatment. This current Special Issue entitled “Epithelial to Mesenchymal Transition in Cancer” will address these questions.

Towards New Promising Discoveries for Lung Cancer Patients: A Selection of Papers from the First Joint Meeting on Lung Cancer of the FHU OncoAge (Nice, France) and the MD Anderson Cancer Center (Houston, TX, USA)

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ISBN: 9783039214518 9783039214525 Year: Pages: 230 DOI: 10.3390/books978-3-03921-452-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General) --- Oncology
Added to DOAB on : 2019-12-09 11:49:15
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This Special Issue of Cancers (Basel) is mainly dedicated to selecting papers from the talks given during the first Joint Meeting on Lung Cancer (JMLC) between the MD Anderson Cancer Center (Houston, Texas USA) and the Hospital University Federation (HUF) OncoAge (University Côte d’Azur, Nice, France) (Nice, September 2018). The central theme of JMLC is to discuss new advances and exchange ideas regarding lung cancer. Notably, the talks covered different topics on new therapeutic strategies (targeted therapy and immuno-oncology), molecular and cellular biology, biomarkers, and the epidemiology of lung cancer. Special attention was also given to lung cancer in elderly patients. The articles published in this Special Issue covered subjects such as the assessment of new biomarkers and new approaches for the early detection of lung cancer, epidemiological data, and emphasized a place for the newly characterized cellular pathways in lung cancer, which opens room for therapeutic perspectives for lung cancer patients.

Repetitive DNA Sequences

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ISBN: 9783039283668 9783039283675 Year: Pages: 206 DOI: 10.3390/books978-3-03928-367-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Genetics
Added to DOAB on : 2020-04-07 23:07:08
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Repetitive DNA is ubiquitous in eukaryotic genomes, and, in many species, comprises the bulk of the genome. Repeats include transposable elements that can self-mobilize and disperse around the genome, and tandemly-repeated satellite DNAs that increase in copy number due to replication slippage and unequal crossing over. Despite their abundance, repetitive DNA is often ignored in genomic studies due to technical challenges in their identification, assembly, and quantification. New technologies and methods are now providing the unprecedented power to analyze repetitive DNAs across diverse taxa. Repetitive DNA is of particular interest because it can represent distinct modes of genome evolution. Some repetitive DNA forms essential genome structures, such as telomeres and centromeres, which are required for proper chromosome maintenance and segregation, whereas others form piRNA clusters that regulate transposable elements; thus, these elements are expected to evolve under purifying selection. In contrast, other repeats evolve selfishly and produce genetic conflicts with their host species that drive adaptive evolution of host defense systems. However, the majority of repeats likely accumulate in eukaryotes in the absence of selection due to mechanisms of transposition and unequal crossing over. Even these neutral repeats may indirectly influence genome evolution as they reach high abundance. In this Special Issue, the contributing authors explore these questions from a range of perspectives.

Transcriptional Regulation: Molecules, Involved Mechanisms and Misregulation

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ISBN: 9783039212651 9783039212668 Year: Pages: 356 DOI: 10.3390/books978-3-03921-266-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-08-28 11:21:27
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Transcriptional regulation is a critical biological process involved in the response of a cell, a tissue or an organism to a variety of intra- and extra-cellular signals. Besides, it controls the establishment and maintenance of cell identity throughout developmental and differentiation programs. This highly complex and dynamic process is orchestrated by a huge number of molecules and protein networks and occurs through multiple temporal and functional steps. Of note, many human disorders are characterized by misregulation of global transcription since most of the signaling pathways ultimately target components of transcription machinery. This book includes a selection of papers that illustrate recent advances in our understanding of transcriptional regulation and focuses on many important topics, from cis-regulatory elements to transcription factors, chromatin regulators and non-coding RNAs, other than several transcriptome studies and computational analyses.

Keywords

major depressive disorder --- glioblastoma --- differentially expressed genes --- transcriptomics --- common pathway --- mouse --- miR-25-3p --- Akt1 --- AP-2? --- promoter --- cell metabolism --- p57Kip2 --- CDKN1C --- epigenetics --- disease --- cell differentiation --- placenta --- long non-coding RNA (lncRNA) --- human --- pregnancy --- high-throughput RNA sequencing (RNA-Seq) --- transcriptome --- Rsh regulon --- Novosphingobium pentaromativorans US6-1 --- sphingomonads --- RNA-seq --- N-acyl-l-homoserine lactone --- ppGpp --- selenium --- selenocysteine --- selenoproteins --- selenocysteine insertion sequence --- nonsense-mediated decay --- G-quadruplex --- transcriptional regulation --- promoter --- CRISPR/Cas9 --- PRDM gene family --- TCGA data analysis --- somatic mutations --- transcriptome profiling --- human malignancies --- tristetraprolin (TTP) --- tumorigenesis --- posttranscriptional regulation --- adenosine and uridine-rich elements (AREs) --- circRNA-disease associations --- pathway --- heterogeneous network --- Patau Syndrome --- cytogenetics --- FOXO1 --- transcription factor --- molecular pathways --- bioinformatics --- molecular docking --- and drug design --- transcription regulation --- gene expression --- causal inference --- enhancer activity --- insect --- transcription factors --- structures and functions --- research methods --- progress and prospects --- Pax3 --- Pteria penguin (Röding, 1798) --- tyrosinase --- melanin --- RNA interference --- liquid chromatograph-tandem mass spectrometer (LC-MS/MS) --- epigenetics --- gene expression --- nutrition --- transcription --- disorders --- mechanisms --- Crassostrea gigas --- Pacific oyster --- pediveliger larvae --- bioadhesive --- transcriptome --- gene expression --- interactome --- microscopy --- fertilization --- self-incompatibility --- transcriptome --- tea --- long non-coding RNAs --- cancer --- acute leukemia --- therapeutic targets --- Adiponectin --- cancer --- Adiponectin receptors --- obesity --- inflammatory response --- inflammation --- nutritional status --- n/a

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