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Freddy Radtke

Cette personne a quitté l’EPFL

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Publications associées (113)

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Notch2 Signaling Maintains NSC Quiescence in the Murine Ventricular-Subventricular Zone

Freddy Radtke

Neurogenesis continues in the ventricular-subventricular zone (V-SVZ) of the adult forebrain from quiescent neural stem cells (NSCs). V-SVZ NSCs are a reservoir for new olfactory bulb (OB) neurons that migrate through the rostral migratory stream (RMS). To ...

2018

Notch1 Deficiency Induces Tumor Cell Accumulation Inside the Bronchiolar Lumen and Increases TAZ Expression in an Autochthonous Kras (LSL-G12V) Driven Lung Cancer Mouse Model

Freddy Radtke

Purpose: Abrogation of Notch signaling, which is pivotal for lung development and pulmonary epithelial cell fate decisions was shown to be involved in the aggressiveness and the differentiation of lung carcinomas. Additionally, the transcription factors YA ...

FRONTIERS MEDIA SA2021

Derivation of Traceable and Transplantable Photoreceptors from Mouse Embryonic Stem Cells

Freddy Radtke, Ute Koch

Retinal degenerative diseases resulting in the loss of photoreceptors are one of the major causes of blindness. Photoreceptor replacement therapy is a promising treatment because the transplantation of retina-derived photoreceptors can be applied now to di ...

Cell Press2014

Neutrophils suppress tumor-infiltrating T cells in colon cancer via matrix metalloproteinase-mediated activation of TGF beta

Freddy Radtke, Mauro Delorenzi, George Coukos, Nadine Fournier, Marc-Olivier Sauvain, Amber Dawn Bowler, Markus Germann

High T-cell infiltration in colorectal cancer (CRC) correlates with a favorable disease outcome and immunotherapy response. This, however, is only observed in a small subset of CRC patients. A better understanding of the factors influencing tumor T-cell re ...

2020

A third Notch in colorectal cancer progression and metastasis

Freddy Radtke, Ute Koch

In this issue of JEM, Varga et al. (https://doi.org/10.1084/jem.20191515) describe a mouse model of invasive and metastatic colorectal cancer (CRC) closely resembling the human consensus molecular subtype (CMS) 4 associated with the poorest overall surviva ...

ROCKEFELLER UNIV PRESS2020

Jagged1 is the major regulator of notch-dependent cell fate in proximal airways

Freddy Radtke

Background: The Notch signaling pathway plays complex roles in developing lungs, including regulation of proximodistal fates, airway cell specification and differentiation. However, the specific Notch-mediated signals involved in lung development remain un ...

Wiley-Blackwell2013

Early Notch signals from fibroblastic reticular cells program effector CD8+ T cell differentiation

Freddy Radtke, Ute Koch

A better understanding of the mechanisms regulating CD8+ T cell differentiation is essential to develop new strategies to fight infections and cancer. Using genetic mouse models and blocking antibodies, we uncovered cellular and molecular mechanisms by whi ...

ROCKEFELLER UNIV PRESS2025

Corneal epithelial stem cells and their niche at a glance

Freddy Radtke, Craig Nowell

The corneal epitheliumacts as a protective barrier on the anterior ocular surface and is essential for maintaining transparency of the cornea and thus visual acuity. During both homeostasis and repair, the corneal epithelium is maintained by self-renewing ...

Company Of Biologists Ltd2017

Notch Signaling Regulates the Homeostasis of Tissue-Restricted Innate-like T Cells

Freddy Radtke, Ute Koch

Although Notch signaling plays important roles in lineage commitment and differentiation of multiple cell types including conventional T cells, nothing is currently known concerning Notch function in innate-like T cells. We have found that the homeostasis ...

American Association of Immunologists ; Oxford University Press2016

The Notch 'gospel'

Freddy Radtke

2005

Simultaneous loss of beta- and gamma-catenin does not perturb hematopoiesis or lymphopoiesis

Freddy Radtke, Ute Koch

Hematopietic stem cells (HSCs) maintain life-long hematopoiesis in the bone marrow via their ability to self-renew and to differentiate into all blood lineages. Although a central role for the canonical wnt signaling pathway has been suggested in HSC self- ...

2008

Canonical notch signaling is dispensable for the maintenance of adult hematopoietic stem cells

Freddy Radtke, Ute Koch

Gain-of-function experiments have demonstrated the potential of Notch signals to expand primitive hematopoietic progenitors, but whether Notch physiologically regulates hematopoietic stem cell (HSC) homeostasis in vivo is unclear. To answer this question, ...

2008

Multiple functions of Notch signaling in self-renewing organs and cancer

Freddy Radtke

In recent years a substantial body of evidence has accumulated to support the notion that signaling pathways known to be important during embryonic development play important roles in regulating self-renewing tissues. Moreover, the same pathways are often ...

2006

Stem cells living with a Notch

Freddy Radtke, Ute Koch, Rajwinder Lehal

Notch signaling has been shown over the past few decades to play fundamental roles in a plethora of developmental processes in an evolutionarily conserved fashion. Notch-mediated cell-to-cell signaling is involved in many aspects of embryonic development a ...

Company of Biologists2013

Disruption of stem cell niche-confined R-spondin 3 expression leads to impaired hematopoiesis

Freddy Radtke, Ute Koch

Self-renewal and differentiation of stem and progenitor cells are tightly regulated to ensure tissue homeostasis. This regulation is enabled both remotely by systemic circulating cues, such as cytokines and hormones, and locally by various niche-confined f ...

ELSEVIER2023

Notch-induced T cell development requires phosphoinositide-dependent kinase 1

Freddy Radtke

Phosphoinositide-dependent kinase l (PDK1) phosphorylates and activates multiple AGC serine kinases, including protein kinase B (PKB), p70Ribosomal S6 kinase (S6K) and p90Ribosomal S6 kinase (RSK). PDK1 is required for thymocyte differentiation and prolife ...

2007

Loss of intestinal crypt progenitor cells owing to inactivation of both Notch1 and Notch2 is accompanied by derepression of CDK inhibitors p27Kip1 and p57Kip2

Freddy Radtke, Orbicia Riccio Wicht, Luca Pellegrinet

The crucial role of individual Notch receptors and the mechanism by which they maintain intestinal crypt progenitor cells were assessed by using a series of inducible gut-specific Notch mutant mice. We found that Notch1 and Notch2 receptors function redund ...

2008

Notch signaling in hematopoiesis and lymphopoiesis: lessons from Drosophila

Freddy Radtke

The evolutionarily conserved Notch signaling pathway regulates a broad spectrum of cell fate decisions and differentiation processes during fetal and postnatal life. It is involved in embryonic organogenesis as well as in the maintenance of homeostasis of ...

2005

Stem cell biology meets systems biology

Freddy Radtke

Stem cells and their descendents are the building blocks of life. How stem cell populations guarantee their maintenance and/or self-renewal, and how individual stem cells decide to transit from one cell stage to another to generate different cell types are ...

2009

Linking inflammation and mechanotransduction in stem cell regulation

Freddy Radtke, Craig Nowell

Taylor & Francis Inc2016