Abstract
KLF4 (GKLF/EZF) encodes a transcription factor that is associated with both tumour suppression and oncogenesis. We describe the identification of KLF4 in a functional genomic screen for genes that bypass RASV12-induced senescence. However, in untransformed cells, KLF4 acts as a potent inhibitor of proliferation. KLF4-induced arrest is bypassed by oncogenic
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