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Cancer Research in Switzerland - Krebsliga Schweiz

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112<br />

In this project we will <strong>in</strong>vestigate whether the RasGAP<br />

peptide can <strong>in</strong>deed block the formation of metastases <strong>in</strong><br />

mice. We will also study the mode of action of the peptide<br />

on tumour cells by <strong>in</strong>vestigat<strong>in</strong>g the effect of the peptide<br />

on cell adhesion molecules and on the cytoskeleton. These<br />

experiments might lead to cl<strong>in</strong>ical application <strong>in</strong> humans.<br />

Project coord<strong>in</strong>ator<br />

Prof. Dr Christian Widmann<br />

Département de physiologie<br />

Université de Lausanne<br />

Rue du Bugnon 7<br />

CH­1005 Lausanne<br />

Phone +41 (0)21 692 51 23<br />

Fax +41 (0)21 692 55 95<br />

christian.widmann@unil.ch<br />

Wymann Matthias Paul | Identification and modulation<br />

of targets to reprogram glioblastoma cancer stem<br />

cells (KFS 02680­08­2010)<br />

Duration: 01.01.2011– 01.01.2014<br />

Glioblastoma multiforme (GBM) is a very aggressive bra<strong>in</strong><br />

tumour. A signall<strong>in</strong>g pathway connect<strong>in</strong>g a lipid k<strong>in</strong>ase<br />

(phospho<strong>in</strong>ositide 3­k<strong>in</strong>ase (PI3K)) to a nutrient sensor<br />

complex (target of rapamyc<strong>in</strong> (mTOR)) constitutes a central<br />

piece of GBM aetiology. To date, little is known regard<strong>in</strong>g<br />

relevant signall<strong>in</strong>g downstream of the lipid product PtdIns(3,4,5)P3<br />

of PI3Ks. Explor<strong>in</strong>g structural determ<strong>in</strong>ants<br />

of putative phospho<strong>in</strong>ositide­<strong>in</strong>teract<strong>in</strong>g prote<strong>in</strong>s, we will<br />

assemble pathway modules to be targeted <strong>in</strong> GBM. We<br />

have developed enrichment protocols for GBM­derived<br />

cancer stem cells (GBM CSCs). These will be monitored for<br />

phenotypic outputs of pharmacologically and genetically<br />

modulated PIiPs­dependent pathways. Pilot studies <strong>in</strong>dicate<br />

that reprogramm<strong>in</strong>g GBM CSCs could drive them<br />

towards differentiation and cell death. The identification<br />

of novel signall<strong>in</strong>g elements <strong>in</strong> GBM CSCs is of critical importance<br />

for develop<strong>in</strong>g novel strategies for the treatment<br />

of this devastat<strong>in</strong>g disease.<br />

Project coord<strong>in</strong>ator<br />

Prof. Dr. Matthias Paul Wymann<br />

Institut für Biochemie und Genetik<br />

Departement Biomediz<strong>in</strong><br />

Universität Basel<br />

Mattenstrasse 28<br />

CH­4058 Basel<br />

Phone +41 (0)61 695 30 46<br />

matthias.wymann@unibas.ch<br />

Zaugg Kathr<strong>in</strong> | Elucidat<strong>in</strong>g the role of the hypoxiaprotective<br />

gene CPT1C (Carnit<strong>in</strong>e Palmitoyl-transferase<br />

1C) <strong>in</strong> carc<strong>in</strong>ogenesis (KLS 02569­02­2010)<br />

Duration: 01.05.2010 – 01.05.2011<br />

Hypoxia is a key regulator <strong>in</strong> tumour growth and can lead<br />

through an epigenetic phenomenon to more resistant<br />

cancer cells. In our laboratory we are <strong>in</strong>vestigat<strong>in</strong>g the<br />

mechanism of a gene that modulates cancer cell death under<br />

hypoxic conditions. In addition, it promotes migration<br />

and <strong>in</strong>vasion when overexpressed.<br />

Project coord<strong>in</strong>ator<br />

Dr. Kathr<strong>in</strong> Zaugg<br />

Labor für angewandte Radio­Onkologie<br />

UniversitätsSpital Zürich<br />

NUK E 17<br />

Rämistrasse 100<br />

CH­8091 Zürich<br />

Phone +41 (0)44 255 29 30<br />

Fax +41 (0)44 255 44 35<br />

kathr<strong>in</strong>.zaugg@usz.ch<br />

Zavolan Mihaela | Identification of cancer-related<br />

targets of <strong>in</strong>dividual members of the miR-17~92 cluster<br />

of miRNA (KFS 02477­08­2009)<br />

Duration: 01.01.2010 – 01.01.2013<br />

MicroRNAs (miRNAs) are short RNA molecules that regulate<br />

expression of prote<strong>in</strong>­cod<strong>in</strong>g genes that play important<br />

roles <strong>in</strong> the growth, division, differentiation and apoptosis<br />

of cells. Some act as cancer suppressors, downregulat<strong>in</strong>g<br />

cancer­promot<strong>in</strong>g cellular factors, while others are oncogenic,<br />

promot<strong>in</strong>g malignancies. We are study<strong>in</strong>g the miR­<br />

17~92 miRNA family, which consists of six related miRNAs<br />

that collectively have been implicated <strong>in</strong> various lymphomas,<br />

as well as lung, bladder and colon cancers. Our project<br />

aims to uncover the targets and pathways that <strong>in</strong>dividual<br />

members of the miR­17~92 cluster affect <strong>in</strong> br<strong>in</strong>g<strong>in</strong>g<br />

about carc<strong>in</strong>ogenesis. We comb<strong>in</strong>e high­throughput experiments<br />

with computational predictions and direct molecular<br />

biology techniques for target validation. By observ<strong>in</strong>g<br />

the behaviour of tumour­derived cells <strong>in</strong> which we<br />

deplete these targets with small <strong>in</strong>terfer<strong>in</strong>g RNAs, we will<br />

further identify the role of these targets <strong>in</strong> tumour formation.<br />

The targets that we hope to identify would constitute<br />

potential factors for novel drugs that prevent or slow<br />

down cancer formation.<br />

Project coord<strong>in</strong>ator<br />

Prof. Dr. Mihaela Zavolan<br />

Departement Biozentrum<br />

Universität Basel<br />

Kl<strong>in</strong>gelbergstrasse 50–70<br />

CH­4056 Basel<br />

Phone +41 (0)61 267 15 77<br />

mihaela.zavolan@unibas.ch

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