National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The effect of Crk SH3domain inhibition in invasiveness of cells
Tomášová, Lea ; Rösel, Daniel (advisor) ; Vomastek, Tomáš (referee)
Protooncogene Crk was found to be upregulated in tumours with aggressive and invasive potential. The adaptor protein Crk has an important role in cell signaling: it integrates signals from activated integrins and growth factors receptors via its SH2 domain and transmits the signal to its SH3 domain binding partners that activate the small GTPases Rac1, Rap1 and Ras. This leads to regulation of cell migration, proliferation and survival. The aim of this thesis project was to inhibit the Crk dependent signaling by a competitive inhibition of the Crk SH3 domain, using a high affinity CrkSH3 binding peptoid. Binding of the inhibitor to the Crk SH3 domain prevents binding of cellular Crk SH3 interaction partners and the corresponding signal transmission is impaired. In this thesis project the effect of the Crk SH3 inhibition on the invasiveness of cancer cells was analyzed. The observed inhibitory effect on cell invasion as well as on anchorage independent growth provides a proof of therapeutical relevance of targeting CrkSH3N domain by peptoide-based inhibitors. Powered by TCPDF (
The role of proto-oncogene crk in invasiveness
Tomášová, Lea ; Rösel, Daniel (advisor) ; Ševčík, Jan (referee)
Proto-oncogene Crk was identified as an oncogenic product of an avian retrovirus in 1988. It is an adaptor protein containing SH2 and SH3 binding domains. Thanks to these domains Crk facilitates protein-protein interactions and therefore plays a crucial role in signal transduction. Crk forms signal complexes with several proteins and hence impacts many cellular processes, among them cell migration, tumorigenezis and invasion of the surrounding tissues. The increased invasiveness allows the tumour cells to detach from the primary tumour and form metastasis which is very problematic feature of cancer. Overexpression of Crk was observed in several tumour tissues, it correlates with an aggressive and metastatic phenotype of the tumours. The subject of this thesis is to describe the mechanisms of how Crk can regulate cellular motility and invasiveness.

See also: similar author names
1 TOMÁŠOVÁ, Ludmila
1 Tomášová, Lenka
2 Tomášová, Lucia
2 Tomášová, Lucie
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