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Université de Fribourg

Absence of calretinin protein expression in malignant mesotheliomas from asbestos-exposed NF2+/− mice and mouse mesothelioma cell lines from various mouse strains

Blum, Walter ; Henzi, Thomas ; Châtel-Soulet, Hugues-Etienne ; Pecze, Laszlo ; Wörthmüller Rodriguez, Janine ; Vrugt, Bart ; Schwaller, Beat

In: Biomarker Research, 2018, vol. 6, no. 1, p. 19

Calretinin is the most widespread positive marker for the immunohistochemical identification of malignant mesothelioma (MM) and was proposed to serve as a blood- based biomarker. Functionally, evidence has accumulated that calretinin might be implicated in MM tumorigenesis. We aimed to identify calretinin (CR; Calb2) in murine MM and reactive mesothelial cells in granuloma from...

Université de Fribourg

Dysregulation of parvalbumin expression in the Cntnap2−/− mouse model of autism spectrum disorder

Lauber, Emanuel ; Filice, Federica ; Schwaller, Beat

In: Frontiers in Molecular Neuroscience, 2018, vol. 11, p. -

Due to the complex and heterogeneous etiology of autism spectrum disorder (ASD), identification of convergent pathways and/or common molecular endpoints in the pathophysiological processes of ASD development are highly needed in order to facilitate treatment approaches targeted at the core symptoms. We recently reported on decreased expression of the Ca2+-binding protein parvalbumin (PV) in...

Université de Fribourg

Regulation of calretinin in malignant mesothelioma is mediated by septin 7 binding to the CALB2 promoter

Blum, Walter ; Pecze, László ; Wörthmüller Rodriguez, Janine ; Steinauer, Martine ; Schwaller, Beat

In: BMC Cancer, 2018, vol. 18, p. 475

The calcium-binding protein calretinin (gene name: CALB2) is currently considered as the most sensitive and specific marker for the diagnosis of malignant mesothelioma (MM). MM is a very aggressive tumor strongly linked to asbestos exposure and with no existing cure so far. The mechanisms of calretinin regulation, as well as its distinct function in MM are still poorly understood.

Université de Fribourg

Putative cancer stem cells may be the key target to inhibit cancer cell repopulation between the intervals of chemoradiation in murine mesothelioma

Wu, Licun ; Blum, Walter ; Zhu, Chang-Qi ; Yun, Zhihong ; Pecze, Laszlo ; Kohno, Mikihiro ; Chan, Mei-Lin ; Zhao, Yidan ; Felley-Bosco, Emanuela ; Schwaller, Beat ; Perrot, Marc de

In: BMC Cancer, 2018, vol. 18, p. 471

Cancer cell repopulation during chemotherapy or radiotherapy is a major factor limiting the efficacy of treatment. Cancer stem cells (CSC) may play critical roles during this process. We aim to demonstrate the role of mesothelioma stem cells (MSC) in treatment failure and eventually to design specific target therapies against MSC to improve the efficacy of treatment in malignant mesothelioma.

Université de Fribourg

How asbestos drives the tissue towards tumors: YAP activation, macrophage and mesothelial precursor recruitment, RNA editing, and somatic mutations

Rehrauer, Hubert ; Wu, Licun ; Blum, Walter ; Pecze, Lazslo ; Henzi, Thomas ; Serre-Beinier, Véronique ; Aquino, Catherine ; Vrugt, Bart ; Perrot, Marc de ; Schwaller, Beat ; Felley-Bosco, Emanuela

In: Oncogene, 2018, vol. 37, no. 20, p. 2645–2659

Chronic exposure to intraperitoneal asbestos triggered a marked response in the mesothelium well before tumor development. Macrophages, mesothelial precursor cells, cytokines, and growth factors accumulated in the peritoneal lavage. Transcriptome profiling revealed YAP/TAZ activation in inflamed mesothelium with further activation in tumors, paralleled by increased levels of cells with...

Université de Fribourg

17-β estradiol increases parvalbumin levels in Pvalb heterozygous mice and attenuates behavioral phenotypes with relevance to autism core symptoms

Filice, Federica ; Lauber, Emanuel ; Vörckel, Karl Jakob ; Wöhr, Markus ; Schwaller, Beat

In: Molecular Autism, 2018, vol. 9, p. 15

Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders characterized by two core symptoms: impaired social interaction and communication, and restricted, repetitive behaviors and interests. The pathophysiology of ASD is not yet fully understood, due to a plethora of genetic and environmental risk factors that might be associated with or causal for ASD. Recent findings...

Université de Fribourg

Biological noise and positional effects influence cell stemness

Blum, Walter ; Henzi, Thomas ; Schwaller, Beat ; Pecze, László

In: Journal of Biological Chemistry, 2018, vol. 293, no. 14, p. 5247–5258

Biological (or cellular) noise is the random quantitative variability of proteins and other molecules in individual, genetically identical cells. As the result of biological noise in the levels of some transcription factors that determine a cell's differentiation status, differentiated cells may dedifferentiate to a stem cell state given a sufficiently long time period. Here, to provide...

Université de Fribourg

Menthol evokes Ca2+ signals and induces oxidative stress independently of the presence of TRPM8 (menthol) receptor in cancer cells

Nazıroğlu, Mustafa ; Blum, Walter ; Jósvay, Katalin ; Çiğ, Bilal ; Henzi, Thomas ; Oláh, Zoltán ; Vizler, Csaba ; Schwaller, Beat ; Pecze, László

In: Redox Biology, 2018, vol. 14, p. 439–449

Menthol is a naturally occurring monoterpene alcohol possessing remarkable biological properties including antipruritic, analgesic, antiseptic, anti-inflammatory and cooling effects. Here, we examined the menthol-evoked Ca2+ signals in breast and prostate cancer cell lines. The effect of menthol (50–500µM) was predicted to be mediated by the transient receptor potential ion channel...

Université de Fribourg

Parvalbumin neurons as a hub in autism spectrum disorders

Lauber, Emanuel ; Filice, Federica ; Schwaller, Beat

In: Journal of Neuroscience Research, 2018, vol. 96, no. 3, p. 360–361

Université de Fribourg

Targeting breast cancer cells by MRS1477, a positive allosteric modulator of TRPV1 channels

Nazıroğlu, Mustafa ; Çiğ, Bilal ; Blum, Walter ; Vizler, Csaba ; Buhala, Andrea ; Marton, Annamária ; Katona, Róbert ; Jósvay, Katalin ; Schwaller, Beat ; Oláh, Zoltán ; Pecze, László

In: PLOS ONE, 2017, vol. 12, no. 6, p. e0179950

There is convincing epidemiological and experimental evidence that capsaicin, a potent natural transient receptor potential cation channel vanilloid member 1 (TRPV1) agonist, has anticancer activity. However, capsaicin cannot be given systemically in large doses, because of its induction of acute pain and neurological inflammation. MRS1477, a dihydropyridine derivative acts as a positive...