Abstract
Doublecortin-like kinase 1 (DCLK1) is critical for neurogenesis, but overexpression is also observed in multiple cancers and is associated with poor prognosis. Nevertheless, the function of DCLK1 in cancer, especially the context-dependent functions, are poorly understood. We present a “toolkit” that includes the DCLK1 inhibitor DCLK1-IN-1, a complementary DCLK1-IN-1-resistant mutation G532A, and kinase dead mutants D511N and D533N, which can be used to investigate signaling pathways regulated by DCLK1. Using a cancer cell line engineered to be DCLK1 dependent for growth and cell migration, we show that this toolkit can be used to discover associations between DCLK1 kinase activity and biological processes. In particular, we show an association between DCLK1 and RNA processing, including the identification of CDK11 as a potential substrate of DCLK1 using phosphoproteomics.
Original language | English (US) |
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Pages (from-to) | 1229-1240.e4 |
Journal | Cell Chemical Biology |
Volume | 27 |
Issue number | 10 |
DOIs | |
State | Published - Oct 15 2020 |
Keywords
- cancer
- doublecortin-like kinase 1
- kinase inhibitor
- mass spectrometry
- phosphoproteomics
- signal transduction
- structural biology
ASJC Scopus subject areas
- Biochemistry
- Molecular Medicine
- Molecular Biology
- Pharmacology
- Drug Discovery
- Clinical Biochemistry