Unique dependence on Sos1 in KrasG12D-induced leukemogenesis

Abstract excerpt

Abstract We and others have previously shown that KrasG12D is a much more potent oncogene than oncogenic Nras in hematological malignancies. We attributed the strong leukemogenic activity of KrasG12D at least partially to its unique capability to hyperactivate wild-type (WT) Nras and Hras. Here, we report that Sos1, a guanine nucleotide exchange factor, is required to mediate this process. Sos1 is overexpressed...

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