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Università della Svizzera italiana

A bispecific immunotweezer prevents soluble PrP oligomers and abolishes prion toxicity

Bardelli, Marco ; Frontzek, Karl ; Simonelli, Luca ; Hornemann, Simone ; Pedotti, Mattia ; Mazzola, Federica ; Carta, Manfredi ; Eckhardt, Valeria ; D’Antuono, Rocco ; Virgilio, Tommaso ; González, Santiago F. ; Aguzzi, Adriano ; Varani, Luca

In: Plos pathogens, 2018, vol. 14, no. 10, p. e1007335

Antibodies to the prion protein, PrP, represent a promising therapeutic approach against prion diseases but the neurotoxicity of certain anti-PrP antibodies has caused concern. Here we describe scPOM-bi, a bispecific antibody designed to function as a molecular prion tweezer. scPOM-bi combines the complementarity-determining regions of the neurotoxic antibody POM1 and the neuroprotective...

Università della Svizzera italiana

The protein disulfide isomerase ERp57 regulates the steady-state levels of the prion protein

Torres, Mauricio ; Medinas,Danilo B. ; Matamala, José Manuel ; Woehlbier, Ute ; Cornejo, Víctor Hugo ; Solda, Tatiana ; Andreu, Catherine ; Rozas, Pablo ; Matus, Soledad ; Muñoz, Natalia ; Vergara, Carmen ; Cartier, Luis ; Soto, Claudio ; Molinari, Maurizio ; Hetz, Claudio

In: The journal of biological chemistry, 2015, vol. 290, no. 39, p. 23631-23645

Although the accumulation of a misfolded and protease-resistant form of the prion protein (PrP) is a key event in Prion pathogenesis, the cellular factors involved in its folding and quality control are poorly understood. PrP is a glycosylated and disulfide-bonded protein synthesized at the endoplasmic reticulum (ER). The ER foldase ERp57 (also known as Grp58) is highly expressed in the brain...

Université de Fribourg

Ubiquitous overexpression of the DNA repair factor dPrp19 reduces DNA damage and extends Drosophila life span

Garschall, Kathrin ; Dellago, Hanna ; Gáliková, Martina ; Schosserer, Markus ; Flatt, Thomas ; Grillari, Johannes

In: npj Aging and Mechanisms of Disease, 2017, vol. 3, no. 1, p. 5

Mechanisms that ensure and maintain the stability of genetic information are fundamentally important for organismal function and can have a large impact on disease, aging, and life span. While a multi-layered cellular apparatus exists to detect and respond to DNA damage, various insults from environmental and endogenous sources continuously affect DNA integrity. Over time this can lead to the...