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Gene regulation review

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https://www.readbyqxmd.com/read/29786110/multi%C3%A2-layered-prevention-and-treatment-of-chronic-inflammation-organ-fibrosis-and-cancer-associated-with-canonical-wnt-%C3%AE-%C3%A2-catenin-signaling-activation-review
#1
Masaru Katoh
β‑catenin/CTNNB1 is an intracellular scaffold protein that interacts with adhesion molecules (E‑cadherin/CDH1, N‑cadherin/CDH2, VE‑cadherin/CDH5 and α‑catenins), transmembrane‑type mucins (MUC1/CD227 and MUC16/CA125), signaling regulators (APC, AXIN1, AXIN2 and NHERF1/EBP50) and epigenetic or transcriptional regulators (BCL9, BCL9L, CREBBP/CBP, EP300/p300, FOXM1, MED12, SMARCA4/BRG1 and TCF/LEF). Gain‑of‑function CTTNB1 mutations are detected in bladder cancer, colorectal cancer, gastric cancer, liver cancer, lung cancer, pancreatic cancer, prostate cancer and uterine cancer, whereas loss‑of‑function CTNNB1 mutations are also detected in human cancer...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29785401/rheumatoid-arthritis-and-mirnas-a-critical-review-through-a-functional-view
#2
REVIEW
Maria Cristina Moran-Moguel, Stefania Petarra-Del Rio, Evangelina E Mayorquin-Galvan, Maria G Zavala-Cerna
Rheumatoid arthritis (RA) is a systemic autoimmune disease with severe joint inflammation and destruction associated with an inflammatory environment. The etiology behind RA remains to be elucidated; most updated concepts include the participation of environmental, proteomic, epigenetic, and genetic factors. Epigenetic is considered the missing link to explain genetic diversification among RA patients. Within epigenetic factors participating in RA, miRNAs are defined as small noncoding molecules with a length of approximately 22 nucleotides, capable of gene expression modulation, either negatively through inhibition of translation and degradation of the mRNA or positively through increasing the translation rate...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29784956/dynamics-and-function-of-dna-methylation-in-plants
#3
REVIEW
Huiming Zhang, Zhaobo Lang, Jian-Kang Zhu
DNA methylation is a conserved epigenetic modification that is important for gene regulation and genome stability. Aberrant patterns of DNA methylation can lead to plant developmental abnormalities. A specific DNA methylation state is an outcome of dynamic regulation by de novo methylation, maintenance of methylation and active demethylation, which are catalysed by various enzymes that are targeted by distinct regulatory pathways. In this Review, we discuss DNA methylation in plants, including methylating and demethylating enzymes and regulatory factors, and the coordination of methylation and demethylation activities by a so-called methylstat mechanism; the functions of DNA methylation in regulating transposon silencing, gene expression and chromosome interactions; the roles of DNA methylation in plant development; and the involvement of DNA methylation in plant responses to biotic and abiotic stress conditions...
May 21, 2018: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/29784926/clinical-utility-of-circulating-non-coding-rnas-an-update
#4
REVIEW
Simone Anfossi, Anna Babayan, Klaus Pantel, George A Calin
Over the past decade, the amount of research and the number of publications on associations between circulating small and long non-coding RNAs (ncRNAs) and cancer have grown exponentially. Particular focus has been placed on the development of diagnostic and prognostic biomarkers to enable efficient patient management - from early detection of cancer to monitoring for disease recurrence or progression after treatment. Owing to their high abundance and stability, circulating ncRNAs have potential utility as non-invasive, blood-based biomarkers that can provide information on tumour biology and the effects of treatments, such as targeted therapies and immunotherapies...
May 21, 2018: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/29783703/regulation-mediated-by-n-acyl-homoserine-lactone-quorum-sensing-signals-in-the-rhizobium-legume-symbiosis
#5
REVIEW
Nieves Calatrava-Morales, Matthew McIntosh, María J Soto
Soil-dwelling bacteria collectively referred to as rhizobia synthesize and perceive N -acyl-homoserine lactone (AHL) signals to regulate gene expression in a population density-dependent manner. AHL-mediated signaling in these bacteria regulates several functions which are important for the establishment of nitrogen-fixing symbiosis with legume plants. Moreover, rhizobial AHL act as interkingdom signals triggering plant responses that impact the plant-bacteria interaction. Both the regulatory mechanisms that control AHL synthesis in rhizobia and the set of bacterial genes and associated traits under quorum sensing (QS) control vary greatly among the rhizobial species...
May 18, 2018: Genes
https://www.readbyqxmd.com/read/29782831/mapping-cellular-polarity-networks-using-mass-spectrometry-based-strategies
#6
REVIEW
Avais M Daulat, Tania M Puvirajesinghe, Luc Camoin, Jean-Paul Borg
Cell polarity is a vital biological process involved in the building, maintenance and normal functioning of tissues in invertebrates and vertebrates. Unsurprisingly, molecular defects affecting polarity organization and functions have a strong impact on tissue homeostasis, embryonic development and adult life, and may directly or indirectly lead to diseases. Genetic studies have demonstrated the causative effect of several polarity genes in diseases, however much remains to be clarified before a comprehensive view of the molecular organization and regulation of the protein networks associated with polarity proteins is obtained...
May 18, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29779583/mouse-models-of-peripheral-metabolic-disease
#7
REVIEW
Gabriela da Silva Xavier, David J Hodson
Metabolic disease risk is driven by defects in the function of cells that regulate energy homeostasis, as well as altered communication between the different tissues or organs that these cells occupy. Thus, it is desirable to use model organisms to understand the contribution of different cells, tissues and organs to metabolism. Mice are widely used for metabolic research, since well-characterised mouse strains (in terms of their genotype and phenotype) allow comparative studies and human disease modelling...
June 2018: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29778495/protection-of-photosynthesis-in-desiccation-tolerant-resurrection-plants
#8
Dinakar Challabathula, Qingwei Zhang, Dorothea Bartels
Inhibition of photosynthesis is a central, primary response that is observed in both desiccation-tolerant and desiccation-sensitive plants affected by drought stress. Decreased photosynthesis during drought stress can either be due to the limitation of carbon dioxide entry through the stomata and the mesophyll cells, due to increased oxidative stress or due to decreased activity of photosynthetic enzymes. Although the photosynthetic rates decrease in both desiccation-tolerant and sensitive plants during drought, the remarkable difference lies in the complete recovery of photosynthesis after rehydration in desiccation-tolerant plants...
May 12, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29778216/nitric-oxide-signalling-in-yeast
#9
Rika I Astuti, Ryo Nasuno, Hiroshi Takagi
Nitric oxide (NO) is a cellular signalling molecule widely conserved among organisms, including microorganisms such as bacteria, yeasts, and fungi, and higher eukaryotes such as plants and mammals. NO is mainly produced by the activities of NO synthase (NOS) or nitrite reductase (NIR). There are several NO detoxification systems, including NO dioxygenase (NOD) and S-nitrosoglutathione reductase (GSNOR). NO homeostasis, based on the balance between NO synthesis and degradation, is important for regulating its physiological functions, since an excess of NO causes nitrosative stress due to the high reactivity of NO and NO-derived compounds...
2018: Advances in Microbial Physiology
https://www.readbyqxmd.com/read/29778215/anaerobic-bacterial-response-to-nitrosative-stress
#10
Jeffrey A Cole
This chapter provides an overview of current knowledge of how anaerobic bacteria protect themselves against nitrosative stress. Nitric oxide (NO) is the primary source of this stress. Aerobically its removal is an oxidative process, whereas reduction is required anaerobically. Mechanisms required to protect aerobic and anaerobic bacteria are therefore different. Several themes recur in the review. First, how gene expression is regulated often provides clues to the physiological function of the gene products...
2018: Advances in Microbial Physiology
https://www.readbyqxmd.com/read/29777831/microcystis-bloom-containing-microcystin-lr-induces-type-2-diabetes-mellitus
#11
Qiong Zhang, Wendi Qin, Liuyan Yang, Jing An, Xuxiang Zhang, Hao Hong, Lizhi Xu, Yaping Wang
Epidemiological data from Lake Taihu showed significantly higher incidences of type 2 diabetes mellitus (T2DM) than in other areas of China. This may be related to the occurrence of a Microcystis bloom in Lake Taihu in the summer and autumn every year. The objective of this study is to investigate whether the contaminated water from the Microcystis bloom and the derivative pollutant microcystin-LR (MC-LR) can explain the higher incidences of T2DM. Healthy male mice were fed with water from different regions of Lake Taihu, and were either acutely or chronically exposed to MC-LR through oral administration or intraperitoneal injection...
May 16, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29777398/the-role-of-dna-methylation-in-renal-cell-carcinoma
#12
REVIEW
Brittany N Lasseigne, James D Brooks
Renal cell carcinoma (RCC) is the most common kidney cancer and includes several molecular and histological subtypes with different clinical characteristics. While survival rates are high if RCC is diagnosed when still confined to the kidney and treated definitively, there are no specific diagnostic screening tests available and symptoms are rare in early stages of the disease. Management of advanced RCC has changed significantly with the advent of targeted therapies, yet survival is usually increased by months due to acquired resistance to these therapies...
May 18, 2018: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/29776381/wnt-signaling-in-multiple-myeloma-a-central-player-in-disease-with-therapeutic-potential
#13
REVIEW
Ingrid Spaan, Reinier A Raymakers, Anja van de Stolpe, Victor Peperzak
Multiple myeloma is the second most frequent hematological malignancy in the western world and remains incurable, predominantly due to acquired drug resistance and disease relapse. The highly conserved Wnt signal transduction pathway, which plays a key role in regulating cellular processes of proliferation, differentiation, migration, and stem cell self-renewal, is associated with multiple aspects of disease. Bone homeostasis is severely disturbed by Wnt antagonists that are secreted by the malignant plasma cells in the bone marrow...
May 18, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29775756/pkm2-a-potential-target-for-regulating-cancer
#14
REVIEW
Yu-Huan Li, Xiao-Feng Li, Jia-Tao Liu, Hua Wang, Lu-Lu Fan, Jun Li, Guo-Ping Sun
Aberrated glucose metabolism is a key future of cancer cells. Unlike normal cells, tumor cells favor glycolysis even in the presence of sufficient oxygen. Pyruvate kinase (PK), a key glucose metabolic enzyme, converts phosphoenolpyruvate (PEP) to pyruvate by transferring the high-energy phosphate group to adenosine diphosphate (ADP) to produce adenosine triphosphate (ATP). Pyruvate kinase M2 (PKM2), one of the four isozyme of PK, which universally expressed in rapidly proliferating cells such as embryonic cells and cancer cells...
May 15, 2018: Gene
https://www.readbyqxmd.com/read/29775660/the-role-of-the-egfr-signaling-pathway-in-stem-cell-differentiation-during-planarian-regeneration-and-homeostasis
#15
REVIEW
Sara Barberán, Francesc Cebrià
Cell signaling is essential for cells to adequately respond to their environment. One of the most evolutionarily conserved signaling pathways is that of the epidermal growth factor receptor (EGFR). Transmembrane receptors with intracellular tyrosine kinase activity are activated by the binding of their corresponding ligands. This in turn activates a wide variety of intracellular cascades and induces the up- or downregulation of target genes, leading to a specific cellular response. Freshwater planarians are an excellent model in which to study the role of cell signaling in the context of stem-cell based regeneration...
May 15, 2018: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29775032/-research-advance-of-microrna-in-the-pathogenesis-of-chronic-rhinosinusitis
#16
REVIEW
Y Ye, Q Luo, J Q Yu, J Zhang
Chronic rhinosinusitis (CRS) is a common disease of otorhinolaryngology head and neck surgery, manifested as nasal-sinus mucosal chronic inflammation. However, the pathogenesis of CRS is not clear. There are studies found that microRNA (miRNA) involved in CRS gene regulation. In this review, we summarize the expression of miRNAs in CRS, with the in-depth study of the role of miRNAs in CRS, and will further elucidate the pathogenesis of CRS.
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29774056/epigenetic-regulation-of-inflammation-in-stroke
#17
REVIEW
Gavin Yong-Quan Ng, Lim Yun-An, Christopher G Sobey, Thameem Dheen, David Yang-Wei Fann, Thiruma V Arumugam
Despite extensive research, treatments for clinical stroke are still limited only to the administration of tissue plasminogen activator and the recent introduction of mechanical thrombectomy, which can be used in only a limited proportion of patients due to time constraints. A plethora of inflammatory events occur during stroke, arising in part due to the body's immune response to brain injury. Neuroinflammation contributes significantly to neuronal cell death and the development of functional impairment and death in stroke patients...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29774045/transposon-derived-non-coding-rnas-and-their-function-in-plants
#18
REVIEW
Jungnam Cho
Transposable elements (TEs) are often regarded as harmful genomic factors and indeed they are strongly suppressed by the epigenetic silencing mechanisms. On the other hand, the mobilization of TEs brings about variability of genome and transcriptome which are essential in the survival and evolution of the host species. The vast majority of such controlling TEs influence the neighboring genes in cis by either promoting or repressing the transcriptional activities. Although TEs are highly repetitive in the genomes and transcribed in specific stress conditions or developmental stages, the trans -acting regulatory roles of TE-derived RNAs have been rarely studied...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29773061/development-of-novel-therapeutics-targeting-isocitrate-dehydrogenase-mutations-in-cancer
#19
Horrick Sharma
Isocitrate dehydrogenases 1 and 2 (IDH1 and IDH2) are key metabolic enzymes that catalyze the conversion of isocitrate to α-ketoglutarate (αKG). IDH 1 and IDH2 regulate several cellular processes, including oxidative respiration, glutamine metabolism, lipogenesis, and cellular defense against oxidative damage. Mutations in IDH1 and IDH2 have recently been observed in multiple tumor types, including gliomas, acute myeloid leukemia, myelodysplastic syndromes, and chondrosarcoma. IDH1 and IDH2 mutations involve a gain in neomorphic activity that catalyze αKG conversion to (R)-2-hydroxyglutarate ((R)-2HG)...
May 17, 2018: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/29772549/long-non-coding-rna-and-polycomb-an-intricate-partnership-in-cancer-biology
#20
Cyrinne Achour, Francesca Aguilo
High-throughput analyses have revealed that the vast majority of the transcriptome does not code for proteins. These non-translated transcripts, when larger than 200 nucleotides, are termed long non-coding RNAs (lncRNAs), and play fundamental roles in diverse cellular processes. LncRNAs are subject to dynamic chemical modification, adding another layer of complexity to our understanding of the potential roles that lncRNAs play in health and disease. Many lncRNAs regulate transcriptional programs by influencing the epigenetic state through direct interactions with chromatin-modifying proteins...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
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