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Université de Fribourg

A novel gene expression signature in peripheral blood mononuclear cells for early detection of colorectal cancer

Nichita, C. ; Ciarloni, L. ; Monnier-Benoit, S. ; Hosseinian, S. ; Dorta, G. ; Rüegg, Curzio

In: Alimentary Pharmacology & Therapeutics, 2014, vol. 39, no. 5, p. 507–517

Background: Early detection and treatment of colorectal adenomatous polyps (AP) and colorectal cancer (CRC) is associated with decreased mortality for CRC. However, accurate, non-invasive and compliant tests to screen for AP and early stages of CRC are not yet available. A blood-based screening test is highly attractive due to limited invasiveness and high acceptance rate among patients.Aim: To...

Université de Fribourg

The αVβ3/αVβ5 integrin inhibitor cilengitide augments tumor response to melphalan isolated limb perfusion in a sarcoma model

Hagen, Timo L.M. ten ; Seynhaeve, Ann L.B. ; Wiel-Ambagtsheer, Gisela aan de ; Bruijn, Ernst A. de ; Tiel, Sandra T. van ; Rüegg, Curzio ; Meyring, Michael ; Grell, Matthias ; Goodman, Simon L. ; Eggermont, Alexander M.M.

In: International Journal of Cancer, 2012, p. -

Isolated limb perfusion (ILP) with melphalan and tumor necrosis factor (TNF)-α is used to treat bulky, locally advanced melanoma and sarcoma. However, TNF toxicity suggests a need for better-tolerated drugs. Cilengitide (EMD 121974), a novel cyclic inhibitor of alpha-V integrins, has both anti-angiogenic and direct anti-tumor effects and is a possible alternative to TNF in ILP. In this study,...

Université de Fribourg

Molecular Pathways: Emerging pathways mediating growth, invasion and metastasis of tumors progressing in an irradiated microenvironment

Kuonen, François ; Secondini, Chiara ; Rüegg, Curzio

In: Clinical Cancer Research, 2012, vol. 18, no. 19, p. 5196-5202

Radiotherapy is a well-established therapeutic modality in oncology. It provides survival benefits in several different cancer types. However, cancers relapsing after radiotherapy often develop into more aggressive conditions, which are difficult to treat and are associated with poor prognosis. Cumulating experimental evidence indicates that the irradiated tumor bed contributes to such...

Université de Fribourg

Inhibition of the Kit ligand/c-Kit axis attenuates metastasis in a mouse model mimicking local breast cancer relapse after radiotherapy

Kuonen, François ; Laurent, Jullien ; Secondini, Chiara ; Lorusso, Girieca ; Stehle, Jean-Christophe ; Rausch, Thierry ; Hull, Eveline Faes-van't ; Bieler, Gregory ; Alghisi, Gian Carlo ; Schwendener, Reto A. ; Andrejevic-Blant, Snezana ; Mirimanoff, René-Olivier ; Rüegg, Curzio

In: Clinical Cancer Research, 2012, vol. 18, no. 16, p. 4365-4374

Purpose: Local breast cancer relapse after breast-saving surgery and radiotherapy is associated with increased risk of distant metastasis formation. The mechanisms involved remain largely elusive. We used the well-characterized 4T1 syngeneic, orthotopic breast cancer model to identify novel mechanisms of post-radiation metastasis. Experimental Design: 4T1 cells were injected in 20 Gy...

Université de Fribourg

New insights into the mechanisms of organ-specific breast cancer metastasis

Lorusso, Girieca ; Rüegg, Curzio

In: Seminars in Cancer Biology, 2012, p. -

Despite the substantial advances obtained in the treatment of localized malignancies, metastatic disease still lacks effective treatment and remains the primary cause of cancer mortality, including in breast cancer. Thus, in order to improve the survival of cancer patients it is necessary to effectively improve prevention or treatment of metastasis. To achieve this goal, complementary strategies...

Université de Fribourg

Concepts of metastasis in flux: the stromal progression model

Sleeman, Jonathan P. ; Christofori, Gerhard ; Fodde, Riccardo ; Collard, John G. ; Berx, Geert ; Decraene, Charles ; Rüegg, Curzio

In: Seminars in Cancer Biology, 2012, p. -

The ability of tumor cells to leave a primary tumor, to disseminate through the body, and to ultimately seed new secondary tumors is universally agreed to be the basis for metastasis formation. An accurate description of the cellular and molecular mechanisms that underlie this multistep process would greatly facilitate the rational development of therapies that effectively allow metastatic...

Université de Fribourg

Akt/PKB-mediated phosphorylation of Twist1 promotes tumor metastasis via mediating cross-talk between PI3K/Akt and TGF-β signaling axes

Xue, Gongda ; Restuccia, David F. ; Lan, Qiang ; Hynx, Debby ; Dirnhofer, Stephan ; Hess, Daniel ; Rüegg, Curzio ; Hemmings, Brian A.

In: Cancer Discovery, 2012, vol. 2, no. 3, p. 248-259

Metastatic breast tumor cells display an epithelial–mesenchymal transition (EMT) that increases cell motility, invasion, and dissemination. Although the transcription factor Twist1 has been shown to contribute to EMT and cancer metastasis, the signaling pathways regulating Twist1 activity are poorly understood. Here, we show that Twist1 is ubiquitously phosphorylated in 90% of 1,532 invasive...

Université de Fribourg

Radiation-induced modifications of the tumor microenvironment promote metastasis

Rüegg, Curzio ; Monnier, Yan ; Kuonen, François ; Imaizumi, Natsuko

In: Bulletin du Cancer, 2011, vol. 98, no. 6, p. 47-57

Radiotherapy is successfully used to treat cancer. Emerging evidence, however, indicates that recurrences after radiotherapy are associated with increased local invasion, metastatic spreading and poor prognosis. Radiation-induced modifications of the tumor microenvironment have been proposed to contribute to increased aggressive tumor behavior, an effect also referred to as tumor bed effect, but...

Université de Fribourg

68Ga-NODAGA-RGDyK for αvβ3 integrin PET imaging : Preclinical investigation and dosimetry

Buchegger, F. ; Viertl, D. ; Baechler, Sébastien ; Dunet, V. ; Kosinski, M. ; Poitry-Yamate, C. ; Rüegg, Curzio ; Prior, J. O.

In: Nuklearmedizin, 2011, vol. 50, no. 6, p. 221-246

Ziel: Zur Darstellung von Integrin αvβ3 von Tumoren oder Tumorneugefäßen wählten wir das zyklische Bindungspeptid Arg-Gly-Asp-D-Tyr-Lys (RGDyK) gekoppelt an NODAGA zur Markierung mit 68Ga. Methoden: NODAGA-RGDyK (ABX) wurde mit dem 68Ga-Eluat des 68Ge-Generators IGG100 markiert mit der Prozessoreinheit PharmTracer. Bioverteilungen wurden in weiblichen Hsd-Mäusen 10, 30, 60 und 90 min nach...

Université de Fribourg

Emerging paradigms and questions on pro-angiogenic bone marrow-derived myelomonocytic cells

Laurent, Julien ; Touvrey, Cédric ; Botta, Francesca ; Kuonen, François ; Rüegg, Curzio

In: The International Journal of Developmental Biology, 2011, vol. 55, p. 527-534

Cancer-related inflammation has emerged in recent years as a major event contributing to tumor angiogenesis, tumor progression and metastasis formation. Bone marrow-derived and inflammatory cells promote tumor angiogenesis by providing endothelial progenitor cells that differentiate into mature endothelial cells, and by secreting pro-angiogenic factors and remodeling the extracellular matrix...