Abstract
Abstract Temporally regulated alternative splicing choices are vital for proper development yet the wrong splice choice may be detrimental. Here we highlight a novel role for the neurotrophin receptor splice variant TrkB.T1 in neurodevelopment, embryogenesis, transformation, and oncogenesis across multiple tumor types in both humans and mice. TrkB.T1 is the predominant NTRK2 isoform across embryonic organogenesis and is highly expressed in a wide range of adult and pediatric tumors. Further, forced expression of TrkB.T1 causes multiple solid and non-solid tumors in mice in the context of tumor suppressor loss. These results highlight a unique role for the neurotrophin receptor splicing in development and oncogenesis and underscore the need for considering alternative splicing and transcript level data in neuroscience, developmental biology, and oncology research.
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