Aim of this thesis was to investigate the lens-specific regulation of the gamma-crystallins in vertebrates using the proximal gamma-F-crystallin promoter as representative in gene reporter assays. The alpha-A-crystallin caused no dose dependent effect upon the gamma-F-crystallin promoter. In contrast to alpha-A-crystallin, Prox1 activates the gamma-F-crystallin promoter 10-fold. Six3 represses the promoter to less than 20 % of its basal activity. This leads to a model of the gamma-crystallin regulation in the lens, which explains the correlation of Six3 being down-regulated, while gamma-crystallin expression is switched on. This additionally is supported by Prox1, activating gamma-crystallin genes.
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Aim of this thesis was to investigate the lens-specific regulation of the gamma-crystallins in vertebrates using the proximal gamma-F-crystallin promoter as representative in gene reporter assays. The alpha-A-crystallin caused no dose dependent effect upon the gamma-F-crystallin promoter. In contrast to alpha-A-crystallin, Prox1 activates the gamma-F-crystallin promoter 10-fold. Six3 represses the promoter to less than 20 % of its basal activity. This leads to a model of the gamma-crystallin reg...
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