The m6A‑methylase complex and mRNA export
Publication date: Available online 2 October 2018Source: Biochimica et Biophysica Acta (BBA) - Gene Regulatory MechanismsAuthor(s): Simon Lesbirel, Stuart A. WilsonAbstractDuring synthesis, mRNA undergoes a number of modifications such as capping, splicing and polyadenylation. These processes are coupled with the orderly deposition of the TREX complex on the mRNA and subsequent recruitment of the NXF1-P15 heterodimer which stimulates the nuclear export of mature mRNAs. mRNAs also undergo a number of internal modifications, the most common of which is the N6‑methyladenosine (m6A) modification. In this review we discuss th...
Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms - October 5, 2018 Category: Genetics & Stem Cells Source Type: research

Transcription factor Zbtb38 downregulates the expression of anti-inflammatory IL1r2 in mouse model of rheumatoid arthritis
Publication date: Available online 15 September 2018Source: Biochimica et Biophysica Acta (BBA) - Gene Regulatory MechanismsAuthor(s): Tímea Ocskó, Dániel M. Tóth, Gyula Hoffmann, Vilmos Tubak, Tibor T. Glant, Tibor A. RauchAbstractDNA methylation is a decisive regulator of gene expression. Differentially methylated promoters were described in rheumatoid arthritis (RA), but we do not know how these epimutations can trigger a proinflammatory cytokine milieu. B cell-focused DNA methylome studies identified a group of genes that had undergone disease-associated changes in a murine model of RA. An arthritis-specific epimut...
Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms - September 17, 2018 Category: Genetics & Stem Cells Source Type: research

G-quadruplex structures at the promoter of HOXC10 regulate its expression
In this report, we revealed that the HOXC10 promoter contains multiple G-tracts in its negative strand and has high potential of forming G-quadruplex structures. In circular dichroism studies, synthesized oligonucleotides based on the G-rich region of 241–297 base pairs upstream of the HOXC10 transcription start site showed molar ellipticity at specific wavelengths characteristic of G-quadruplex structures. Analyses of these oligonucleotides by native polyacrylamide gel electrophoresis, gel-shift assay, immunostaining and replication stop assay revealed formation of multiple types of G-quadruplex structures in presence o...
Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms - September 15, 2018 Category: Genetics & Stem Cells Source Type: research

Pro-inflammatory cytokines IL-6 and CCL2 suppress expression of circadian gene Period2 in mammary epithelial cells
Publication date: Available online 13 September 2018Source: Biochimica et Biophysica Acta (BBA) - Gene Regulatory MechanismsAuthor(s): Chan-Wei Yu, Kuo-Chih Cheng, Ling-Chih Chen, Meng-Xuan Lin, Yi-Cheng Chang, Wendy W. Hwang-VersluesAbstractChronic inflammation is known to contribute to tumor initiation and cancer progression. In breast tissue, the core circadian gene Period (PER)2 plays a critical role in mammary gland development and possesses tumor suppressor function. Interleukin (IL)-6 and C-C motif chemokine ligand (CCL) 2 are among the most abundant cytokines in the inflammatory microenvironment. We found that acut...
Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms - September 15, 2018 Category: Genetics & Stem Cells Source Type: research

Comprehensive analysis of chromatin signature and transcriptome uncovers functional lncRNAs expressed in nephron progenitor cells
In conclusion, we identified a lncRNA, Gm29418, in nephron progenitor cells that has an enhancer-like function on a key regulatory gene, Six2. (Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms)
Source: Biochimica et Biophysica Acta (BBA) Gene Regulatory Mechanisms - September 15, 2018 Category: Genetics & Stem Cells Source Type: research