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Università della Svizzera italiana

CD49d promotes disease progression in chronic lymphocytic leukemia : new insights from CD49d bimodal expression

Tissino, Erika ; Pozzo, Federico ; Benedetti, Dania ; Caldana, Chiara ; Bittolo, Tamara ; Rossi, Francesca Maria ; Bomben, Riccardo ; Nanni, Paola ; Chivilò, Hillarj ; Cattarossi, Ilaria ; Zaina, Eva ; Norris, Kevin ; Polesel, Jerry ; Gentile, Massimo ; Tripepi, Giovanni ; Moia, Riccardo ; Santinelli, Enrico ; Innocenti, Idanna ; Olivieri, Jacopo ; D’Arena, Giovanni ; Laurenti, Luca ; Zaja, Francesco ; Pozzato, Gabriele ; Chiarenza, Annalisa ; Di Raimondo, Francesco ; Rossi, Davide ; Pepper, Chris ; Hartmann, Tanja Nicole ; Gaidano, Gianluca ; Del Poeta, Giovanni ; Gattei, Valter ; Zucchetto, Antonella

In: Blood, 2020, vol. 135, no. 15, p. 1244–1254

CD49d is a remarkable prognostic biomarker of chronic lymphocytic leukemia (CLL). The cutoff value for the extensively validated 30% of positive CLL cells is able to separate CLL patients into 2 subgroups with different prognoses, but it does not consider the pattern of CD49d expression. In the present study, we analyzed a cohort of 1630 CLL samples and identified the presence of ∼20% of CLL...

Université de Fribourg

Bacterial oxidases of the cytochrome bd family : redox enzymes of unique structure, function, and utility as drug targets

Borisov, Vitaliy B. ; Siletsky, Sergey A. ; Paiardini, Alessandro ; Hoogewijs, David ; Forte, Elena ; Giuffrè, Alessandro ; Poole, Robert K.

In: Antioxidants & Redox Signaling, 2021, vol. 34, no. 16, p. 1280-1318

Significance: Cytochrome bd is a ubiquinol:oxygen oxidoreductase of many prokaryotic respiratory chains with a unique structure and functional characteristics. Its primary role is to couple the reduction of molecular oxygen, even at submicromolar concentrations, to water with the generation of a proton motive force used for adenosine triphosphate production. Cytochrome bd is found in many ...

Université de Fribourg

The FKBP4 gene, encoding a regulator of the androgen receptor signaling pathway, is a novel candidate gene for androgen insensitivity syndrome

Ilaslan, Erkut ; Markosyan, Renata ; Sproll, Patrick ; Stevenson, Brian J. ; Sajek, Malgorzata ; Sajek, Marcin P. ; Hayrapetyan, Hasmik ; Sarkisian, Tamara ; Livshits, Ludmila ; Nef, Serge ; Jaruzelska, Jadwiga ; Kusz-Zamelczyk, Kamila

In: International Journal of Molecular Sciences, 2020, vol. 21, no. 21, p. 8403

Androgen insensitivity syndrome (AIS), manifesting incomplete virilization in 46,XY individuals, is caused mostly by androgen receptor (AR) gene mutations. Therefore, a search for AR mutations is a routine approach in AIS diagnosis. However, some AIS patients lack AR mutations, which complicates the diagnosis. Here, we describe a patient suffering from partial androgen insensitivity syndrome...

Université de Fribourg

Hypoxia enhances endothelial intercellular adhesion molecule 1 protein level through upregulation of arginase type II and mitochondrial oxidative stress

Liang, Xiujie ; Arullampalam, Prakash ; Yang, Zhihong ; Ming, Xiu-Fen

In: Frontiers in Physiology, 2019, vol. 10, p. -

Hypoxia plays a crucial role in the pathogenesis of cardiovascular diseases. Mitochondrial enzyme arginase type II (Arg-II) is reported to lead to endothelial dysfunction and enhance the expression of endothelial inflammatory adhesion molecules such as intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). In this study, we investigate the role of Arg-II in...

Université de Fribourg

Overproduction of H2S, generated by CBS, inhibits mitochondrial Complex IV and suppresses oxidative phosphorylation in Down syndrome

Panagaki, Theodora ; Randi, Elisa B. ; Augsburger, Fiona ; Szabo, Csaba

In: Proceedings of the National Academy of Sciences, 2019, p. 201911895

Down syndrome (DS) is associated with significant perturbances in mitochondrial function. Here we tested the hypothesis that the suppression of mitochondrial electron transport in DS cells is due to high expression of cystathionine-β-synthase (CBS) and subsequent overproduction of the gaseous transmitter hydrogen sulfide (H2S). Fibroblasts from DS individuals showed higher CBS expression...

Université de Fribourg

The PARP inhibitor olaparib exerts beneficial effects in mice subjected to cecal ligature and puncture and in cells subjected to oxidative stress without impairing DNA integrity: A potential opportunity for repurposing a clinically used oncological drug for the experimental therapy of sepsis

Ahmad, Akbar ; Vieira, Juliana de Camargo ; Mello, Aline Haas de ; Lima, Thais Martins de ; Ariga, Suely Kubo ; Barbeiro, Denise Frediani ; Barbeiro, Hermes Vieira ; Szczesny, Bartosz ; Törö, Gábor ; Druzhyna, Nadiya ; B.Randi, Elisa ; Marcatti, Michela ; Toliver-Kinsky, Tracy ; Kiss, András ; Liaudet, Lucas ; Salomao, Reinaldo ; Soriano, Francisco Garcia ; Szabo, Csaba

In: Pharmacological Research, 2019, vol. 145, p. 104263

Poly(ADP-ribose) polymerase (PARP) is involved in the pathogenesis of cell dysfunction, inflammation and organ failure during septic shock. The goal of the current study was to investigate the efficacy and safety of the clinically approved PARP inhibitor olaparib in experimental models of oxidative stress in vitro and in sepsis in vivo. In mice subjected to cecal ligation and puncture (CLP)...