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Università della Svizzera italiana

Exon–Intron differential analysis reveals the role of competing endogenous RNAs in post-transcriptional regulation of translation

Munz, Nicolas ; Cascione, Luciano ; Parmigiani, Luca ; Tarantelli, Chiara ; Rinaldi, Andrea ; Cmiljanovic, Natasa ; Cmiljanovic, Vladimir ; Giugno, Rosalba ; Bertoni, Francesco ; Napoli, Sara

In: Non-coding RNA, 2021, vol. 7, no. 2, p. 13

Stressful conditions induce the cell to save energy and activate a rescue program modulated by mammalian target of rapamycin (mTOR). Along with transcriptional and translational regulation, the cell relies also on post-transcriptional modulation to quickly adapt the translation of essential proteins. MicroRNAs play an important role in the regulation of protein translation, and their...

Université de Fribourg

Tissue-specific transcription footprinting using RNA PoI DamID (RAPID) in Caenorhabditis elegans

Gómez-Saldivar, Georgina ; Osuna-Luque, Jaime ; Semple, Jennifer I. ; Glauser, Dominique A. ; Jarriault, Sophie ; Meister, Peter

In: Genetics, 2020, vol. 216, no. 4, p. 931–945

Differential gene expression across cell types underlies development and cell physiology in multicellular organisms. Caenorhabditis elegans is a powerful, extensively used model to address these biological questions. A remaining bottleneck relates to the difficulty to obtain comprehensive tissue-specific gene transcription data, since available methods are still challenging to execute and/or...

Université de Fribourg

Lentiviral-mediated up-regulation of let-7d microRNA decreases alcohol intake through down-regulating the dopamine D3 receptor

Bahi, Amine ; Dreyer, Jean-Luc

In: European Neuropsychopharmacology, 2020, vol. 37, p. 70–81

Recent studies have shown that Lethal-7 (let-7) microRNA (miRNA) is involved in a wide range of psychiatric disorders such as anxiety, depression, schizophrenia, and cocaine addiction. However, the exact role of let-7d miRNA in regulating ethanol intake and preference remains to be elucidated. The aim of the present study was to clarify the role of accumbal let-7d in controlling...

Università della Svizzera italiana

MicroRNAs in hematopoietic development

Montagner, Sara ; Dehó, Lorenzo ; Monticelli, Silvia

In: BMC immunology, 2014, vol. 15, p. 14

Background: MicroRNAs (miRNAs) are short non-coding RNAs involved in the posttranscriptional regulation of a wide range of biological processes. By binding to complementary sequences on target messenger RNAs, they trigger translational repression and degradation of the target, eventually resulting in reduced protein output. MiRNA-dependent regulation of protein translation is a very widespread...

Università della Svizzera italiana

MiR-146a in immunity and disease

Rusca, Nicole ; Monticelli, Silvia

In: Molecular biology international, 2011, vol. 2011, p. 1-7

MicroRNAs (miRNAs) are regulatory molecules able to influence all aspects of the biology of a cell. They have been associated with diseases such as cancer, viral infections, and autoimmune diseases, and in recent years, they also emerged as important regulators of immune responses. MiR-146a in particular is rapidly gaining importance as a modulator of differentiation and function of cells of...

Università della Svizzera italiana

MiR-221 influences effector functions and actin cytoskeleton in mast cells

Mayoral, Ramon J. ; Deho, Lorenzo ; Rusca, Nicole ; Bartonicek, Nenad ; Saini, Harpreet Kaur ; Enright, Anton J. ; Monticelli, Silvia

In: Plos one, 2011, vol. 6, no. 10, p. e26133

Mast cells have essential effector and immunoregulatory functions in IgE-associated allergic disorders and certain innate and adaptive immune responses, but the role of miRNAs in regulating mast cell functions is almost completely unexplored. To examine the role of the activation-induced miRNA miR-221 in mouse mast cells, we developed robust lentiviral systems for miRNA overexpression and...

Università della Svizzera italiana

Regulatory control of DNA end resection by Sae2 phosphorylation

Cannavo, Elda ; Johnson, Dominic ; Andres, Sara N. ; Kissling, Vera M. ; Reinert, Julia K. ; Garcia, Valerie ; Erie, Dorothy A. ; Hess, Daniel ; Thomä, Nicolas H. ; Enchev, Radoslav I. ; Peter, Matthias ; Williams, R. Scott ; Neale, Matt J. ; Cejka, Petr

In: Nature communications, 2018, vol. 9, p. 4016

DNA end resection plays a critical function in DNA double-strand break repair pathway choice. Resected DNA ends are refractory to end-joining mechanisms and are instead channeled to homology-directed repair. Using biochemical, genetic, and imaging methods, we show that phosphorylation of Saccharomyces cerevisiae Sae2 controls its capacity to promote the Mre11-Rad50-Xrs2 (MRX) nuclease to...