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Freddy Radtke

Cette personne a quitté l’EPFL

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Publications associées (113)

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Notch Receptors and Smad3 Signaling Cooperate in the Induction of Interleukin-9-Producing T Cells

Freddy Radtke

Interleukin 9 (IL-9) is a pleiotropic cytokine that can regulate autoimmune responses by enhancing regulatory CD4(+)FoxP3(+) T regulatory (Treg) cell survival and T helper 17 (Th17) cell proliferation. Here, we analyzed the costimulatory requirements for t ...

2012

Dll1- and Dll4-mediated Notch signaling is required for homeostasis of intestinal stem cells

Freddy Radtke, Ute Koch, Luca Pellegrinet

BACKGROUND & AIMS: Ablation of Notch signaling within the intestinal epithelium results in loss of proliferating crypt progenitors, due to their conversion into post-mitotic secretory cells. We aimed to confirm that Notch was active in stem cells (SC), inv ...

2011

Canonical Notch signaling controls the early thymic epithelial progenitor cell state and emergence of the medullary epithelia lineage in fetal thymus development

Freddy Radtke, Ute Koch, Dong Liu

Thymus function depends on the epithelial compartment of the thymic stroma. Cortical thymic epithelial cells (cTECs) regulate T cell lineage commitment and positive selection, while medullary (m) TECs impose central tolerance on the T cell repertoire. Duri ...

2020

Multiple roles of Notch signaling in the regulation of epidermal development

Freddy Radtke

Recent studies have shown that Notch signaling plays an important role in epidermal development, but the underlying molecular mechanisms remain unclear. Here, by integrating loss- and gain-of-function studies of Notch receptors and Hes1, we describe molecu ...

Cell Press - Elsevier2008

The monolayer formation of Bergmann glial cells is regulated by Notch/RBP-J signaling

Freddy Radtke

The Bergmann glia is a unipolar astrocyte in the cerebellar cortex, displaying a tight association with Purkinje cells. The cell bodies of Bergmann glia are located in a row around Purkinje cell somata; they extend radially arranged Bergmann fibers which e ...

2007

Generation and characterization of a Notch1 signaling-specific reporter mouse line

Freddy Radtke, Yann Barrandon, Rajwinder Lehal, Stéphanie Claudinot, Luca Pellegrinet

Signaling through the Notch1 receptor is essential for the control of numerous developmental processes during embryonic life as well as in adult tissue homeostasis and disease. Since the outcome of Notch1 signaling is highly context-dependent, and its prec ...

Wiley-Blackwell2012

Inhibitors of notch signalling pathway and use thereof in treatment of cancers

Jieping Zhu, Freddy Radtke, Rajwinder Lehal, Viktoria Reinmüller

The present invention relates to use of inhibitors of Notch signalling pathway selected from the group consisting of 6-(4-Tert-Butylphenoxy)Pyridin-3-Amine (I3), its derivatives, in treating and/or preventing cancers. ...

2013

Tumor Vessel Normalization by Chloroquine Independent of Autophagy

Freddy Radtke

Chloroquine (CQ) has been evaluated as an autophagy blocker for cancer treatment, but it is unknown if it acts solely by inhibiting cancer cell autophagy. We report that CQ reduced tumor growth but improved the tumor milieu. By normalizing tumor vessel str ...

Elsevier2014

Notch1 Functions as a Tumor Suppressor in a Model of K-ras-Induced Pancreatic Ductal Adenocarcinoma

Freddy Radtke

K-ras is the most commonly mutated oncogene in pancreatic cancer and its activation in murine models is sufficient to recapitulate the spectrum of lesions seen in human pancreatic ductal adenocarcinoma (PDAC). Recent studies suggest that Notch receptor sig ...

American Association for Cancer Research2010

Alternative promoter usage at the notch1 locus supports ligand-independent signaling in T cell development and leukemogenesis

Freddy Radtke

Loss of the transcription factor Ikaros is correlated with Notch receptor activation in T cell acute lymphoblastic leukemia (T-ALL). However, the mechanism remains unknown. We identified promoters in Notch1 that drove the expression of Notch1 proteins in t ...

Elsevier2010

Signalling strength determines proapoptotic functions of STING

Freddy Radtke, Andrea Ablasser, Ute Koch, Muhammet Fatih Gülen

Mammalian cells use cytosolic nucleic acid receptors to detect pathogens and other stress signals. In innate immune cells the presence of cytosolic DNA is sensed by the cGAS-STING signalling pathway, which initiates a gene expression programme linked to ce ...

Springer Nature2017

Liver-specific inactivation of Notch2, but not Notch1, compromises intrahepatic bile duct development in mice

Freddy Radtke

The Notch pathway is an evolutionary conserved, intercellular signaling pathway that plays an important role in cell fate specification and the embryonic development of many organs, including the liver. In humans, mutations in the Notch receptor ligand Jag ...

2008

Induction of cardiogenesis in embryonic stem cells via downregulation of Notch1 signaling

Freddy Radtke

Embryonic stem cells represent an attractive source of cardiomyocytes for cell-replacement therapies. However, before embryonic stem cells can be successfully used for the treatment of cardiac diseases, the precise molecular mechanisms that underlie their ...

2006

In vitro anti-lymphoma activity of the first-in-class pan-NOTCH transcription inhibitor CB-103

Freddy Radtke, Rajwinder Lehal

WILEY2022

Notch Signaling Regulates Follicular Helper T Cell Differentiation

Freddy Radtke, Ute Koch, Nicolas Fasnacht

Follicular helper T (TFH) cells are specialized in providing help for B cell differentiation and Ab secretion. Several positive and negative regulators of TFH cell differentiation have been described but their control is not fully understood. In this study ...

American Association of Immunologists ; Oxford University Press2013

Notch signaling is required for exocrine regeneration after acute pancreatitis

Freddy Radtke

BACKGROUND & AIMS: The mechanisms for tissue regeneration and renewal after acute pancreatitis are not well understood but may involve activation of Notch signaling. To study the effect of Notch signaling ablation during acute experimental pancreatitis, we ...

2008

The E protein-TCF1 axis controls gamma delta T cell development and effector fate

Freddy Radtke

TCF1 plays a critical role in T lineage commitment and the development of alpha beta lineage T cells, but its role in gamma delta T cell development remains poorly understood. Here, we reveal a regulatory axis where T cell receptor (TCR) signaling controls ...

2021

Characterization and profiling of CB-103, a novel small-molecule protein-protein interaction inhibitor targeting the NOTCH transcription complex

Freddy Radtke, Rajwinder Lehal, Michele Vigolo, Charlotte Marie Urech-Varenne

AMER ASSOC CANCER RESEARCH2018

Notch1 signaling is limited in healthy mature kidneys in vivo

Freddy Radtke

ObjectiveA Delta-Notch signaling component, Notch1, is involved in the normal development and multiple disorders of the kidney. Although the increase in Notch1 signaling is crucial to these pathogeneses, the basal signaling level in 'healthy' mature kidney ...

SPRINGERNATURE2023

Pharmacological Activity Of Cb-103-An Oral Pan-Notch Inhibitor With A Novel Mode Of Action

Freddy Radtke, Rajwinder Lehal

Ferrata Storti Foundation2017