Funkční analýza vnitřně neuspořádané struktury substrátové domény v biologii proteinu p130Cas

Hejnarová, Marie

The p130Cas protein is an important mechanosensor in cell adhesive structures such as focal adhesions and podosomes. There, the protein is subjected to mechanical tension that underlie its participation in integrin signaling. At the level of p130Cas, the mechanical force is transduced into a chemical signal. Although p130Cas does not exhibit enzymatic activity, its high binding potential turns it into an important signaling junction that ensures signal distribution to different cellular pathways. As a result, p130Cas has a profound effect on fun- damental cellular processes such as cell proliferation, differentiation and motility. In addition to its irreplaceable role in embryonic development, its involvement in the origin of patholo- gies has also been reported. As a major substrate for Src kinase, p130Cas can participate in signaling leading to tumor transformation and further malignant development. Its upregulated expression is ofen observed in aggressive types of metastasizing tumors, such as breast, prostate, and melanoma cancer. Therefore, in recent years, the possible use of the p130Cas protein as a potential target for migrastatics under development has been discussed. Within this thesis, we focus on the functional analysis of the p130Cas substrate domain. This domain is respon- sible for...

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