SASH1, a family member of the SLY-adapter proteins, was initially described as a tumor suppressor in breast and colorectal cancer. The elucidation of its physiological function and its role in tumorigenesis were the aim of this thesis. In order to generate a conditional knock-out mouse strain two gene targeting vectors were developed. However, homologous recombination could not be obtained so far. The expression and subcellular localization of SASH1 were analyzed in detail by the generation of a SASH1-specific polyclonal antiserum. SASH1 expression was found to be highest in brain and lowest in haematopoetic tissues, with a prominent subcellular enrichment in the nucleus, as well as in lamellipodial areas. Several lines of evidence indicate an actin-regulating function for SASH1. Therefore, the downregulation of SASH1 may result in an increased migration and invasion of tumor cells.
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SASH1, a family member of the SLY-adapter proteins, was initially described as a tumor suppressor in breast and colorectal cancer. The elucidation of its physiological function and its role in tumorigenesis were the aim of this thesis. In order to generate a conditional knock-out mouse strain two gene targeting vectors were developed. However, homologous recombination could not be obtained so far. The expression and subcellular localization of SASH1 were analyzed in detail by the generation of a...
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