NXN Gene Epigenetic Changes in an Adult Neurogenesis Model of Alzheimer's Disease.

In view of the proven link between adult hippocampal neurogenesis (AHN) and learning and memory impairment, we generated a straightforward adult neurogenesis model to recapitulate DNA methylation marks in the context of Alzheimer's disease (AD). Neural progenitor cells (NPCs) were differentiated for 29 days and Aβ peptide 1-42 was added. mRNA expression of Neuronal Differentiation 1 (), Neural Cell Adhesion Molecule 1 (), Tubulin Beta 3 Class III (), RNA Binding Fox-1 Homolog 3 (), Calbindin 1 (), and Glial Fibrillary Acidic Protein () was determined by RT-qPCR to characterize the culture and framed within the multistep process of AHN.

Reduction of mRNA export unmasks different tissue sensitivities to low mRNA levels during Caenorhabditis elegans development.

Animal development requires the execution of specific transcriptional programs in different sets of cells to build tissues and functional organs. Transcripts are exported from the nucleus to the cytoplasm where they are translated into proteins that, ultimately, carry out the cellular functions. Here we show that in Caenorhabditis elegans, reduction of mRNA export strongly affects epithelial morphogenesis and germline proliferation while other tissues remain relatively unaffected.

Cooking a Research Project: New Trends in the Kitchen and in Scientific Policies.

The culture of chefs from the world's best restaurants is substituted by new trends paradigmatically epitomized by the TV program Masterchef. The authors feel that a similar transformation affects modern research. Recent scientific policies constrict the design of research grants with the aim of short-term maximization of the monetary value generated by the researcher.

Disruption of the Caenorhabditis elegans Integrator complex triggers a non-conventional transcriptional mechanism beyond snRNA genes.

Gene expression is generally regulated by recruitment of transcription factors and RNA polymerase II (RNAP II) to specific sequences in the gene promoter region. The Integrator complex mediates processing of small nuclear RNAs (snRNAs) as well as the initiation and release of paused RNAP II at specific genes in response to growth factors. Here we show that in C.

Loss of glutathione redox homeostasis impairs proteostasis by inhibiting autophagy-dependent protein degradation.

In the presence of aggregation-prone proteins, the cytosol and endoplasmic reticulum (ER) undergo a dramatic shift in their respective redox status, with the cytosol becoming more oxidized and the ER more reducing. However, whether and how changes in the cellular redox status may affect protein aggregation is unknown. Here, we show that C.

Effect of the diet type and temperature on the transcriptome.

The transcriptomes of model organisms have been defined under specific laboratory growth conditions. The standard protocol for growth and maintenance is 20°C on an diet. Temperatures ranging from 15°C to 25°C or feeding with other species of bacteria are considered physiological conditions, but the effect of these conditions on the worm transcriptome has not been well characterized.