ArticleThe Journal of biological chemistry2020
The N-terminal domain of the non-receptor tyrosine kinase ABL confers protein instability and suppresses tumorigenesis.
Article in The Journal of biological chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 6 citations in OpenAlex.
- The ubiquitin ligase UBR4 and the deubiquitylase USP5 modulate the stability of DNA mismatch repair protein MLH1.The Journal of biological chemistry · 2024Article
- Emerging roles of the HECT-type E3 ubiquitin ligases in hematological malignancies.Discover oncology · 2021Review
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
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Abstract
Chromosome translocation can lead to chimeric proteins that may become oncogenic drivers. A classic example is the fusion of the BCR activator of RhoGEF and GTPase and the ABL proto-oncogene nonreceptor tyrosine kinase, a result of a chromosome abnormality (Philadelphia chromosome) that causes leukemia. To unravel the mechanism underlying BCR-ABL-mediated tumorigenesis, here we compared the stability of ABL and the BCR-ABL fusion. Using protein degradation, cell proliferation, 5-ethynyl-2-deoxyuridine, and apoptosis assays, along with xenograft tumor analysis, we found that the N-terminal segment of ABL, which is lost in the BCR-ABL fusion, confers degradation capacity that is promoted by SMAD-specific E3 ubiquitin protein ligase 1. We further demonstrate that the N-terminal deletion renders ABL more stable and stimulates cell growth and tumorigenesis. The findings of our study suggest that altered protein stability may contribute to chromosome translocation-induced cancer development.
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