Akt Signaling Is Sustained by a CD44 Splice Isoform–Mediated Positive Feedback Loop

Abstract excerpt

Abstract Tumor cells nearly invariably evolve sustained PI3K/Akt signaling as an effective means to circumvent apoptosis and maintain survival. However, for those tumor cells that do not acquire PI3K/Akt mutations to achieve this end, the underlying mechanisms have remained obscure. Here, we describe the discovery of a splice isoform–dependent positive feedback loop that is essential to sustain PI3K/Akt signaling...

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