| Summary: | Cancer est avere etre une dissemination metastatique et touts ses etapes sont obligatoirement commis par des interactions specifiques entre lescellules tumorales et leur microenvironement. ECM est specifiquement structuree et hautement responsable de ces interactions et de la signalisation de celui-ci. En raison des interactions accordes fines, il peut en resulter dans l' expression du gene altere, et contribuer dans le remodelage de l' ECM dans les conditions pathologiques. Proteoglycanes constituent une categorie cledes proteines glycosylees specials, qui outre le role de structure, sont egalement impliques dans la croissance et la metastase du cancer. SLRPs constituent des molecules biologiquement actifs et sont generalemnt characterises comme les voies de signalisation multifonctions. Lumicane, molecule cle de cette these, appartient aus SLRPs et son effet anticacereux seront etudiees efficaciment. L'objectif de cette these, est de decouvrir la voie de signalisation, dans lequel lumicane actes, est encore reste inconue. === Cancer is proved to be a metastatic dissemination and all its stages are obligatorily perpetrated through specific interactions between tumor cells and their microenvironment. Specifically structured ECM is highly responsible for these interactions and the signalling thereof. Because of the fine tuned interactions,it can result in altered gene expression and contribute to remodeling of ECM under pathological conditions. Proteoglycans constitute a key category of special glycosylated proteins, which apart from the structural role, are also involved in all steps of cancer growth and metastasis. SLRPs constitute biologically active molecules of ECM and ususally are characterised as multifunctional signalling molecules. Lumican, key molecule of the thesis, belongs to the SLRPs and its anticancer effect will extensively be studied. The goal of the thesis is to discover the signalling pathway, in which lumican acts,and still remains unknown.
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