Targeting Anaplastic lymphoma kinase (ALK) is a promising therapeutic strategy for aberrant ALK-expressing malignancies including neuroblastoma, but resistance to ALK tyrosine kinase inhibitors (ALK TKI) is a distinct possibility necessitating drug combination therapeutic approaches. Using high-throughput, genome-wide CRISPR-Cas9 knockout screens, we identify miR-1304-5p loss as a desensitizer to ALK TKIs in aberrant ALK-expressing neuroblastoma; inhibition of miR-1304-5p decreases, while mimics of this miRNA increase the sensitivity of neuroblastoma cells to ALK TKIs. We show that miR-1304-5p targets NRAS, decreasing cell viability via induction of apoptosis. It follows that the farnesyltransferase inhibitor (FTI) lonafarnib in addition to ALK TKIs act synergistically in neuroblastoma, inducing apoptosis in vitro. In particular, on combined treatment of neuroblastoma patient derived xenografts with an FTI and an ALK TKI complete regression of tumour growth is observed although tumours rapidly regrow on cessation of therapy. Overall, our data suggests that combined use of ALK TKIs and FTIs, constitutes a therapeutic approach to treat high risk neuroblastoma although prolonged therapy is likely required to prevent relapse.
- MeSH
- Anaplastic Lymphoma Kinase * genetics metabolism antagonists & inhibitors MeSH
- Apoptosis drug effects genetics MeSH
- Drug Resistance, Neoplasm genetics drug effects MeSH
- Dibenzocycloheptenes * MeSH
- Farnesyltranstransferase * antagonists & inhibitors metabolism MeSH
- GTP Phosphohydrolases * genetics metabolism MeSH
- Protein Kinase Inhibitors * pharmacology therapeutic use MeSH
- Humans MeSH
- Membrane Proteins metabolism genetics MeSH
- MicroRNAs * genetics metabolism MeSH
- Mutation MeSH
- Mice MeSH
- Cell Line, Tumor MeSH
- Neuroblastoma * drug therapy genetics pathology metabolism MeSH
- Piperidines * pharmacology therapeutic use MeSH
- Pyridines * pharmacology therapeutic use MeSH
- Gene Expression Regulation, Neoplastic drug effects MeSH
- Drug Synergism MeSH
- Xenograft Model Antitumor Assays MeSH
- Animals MeSH
- Check Tag
- Humans MeSH
- Mice MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- ALK protein, human MeSH Browser
- Anaplastic Lymphoma Kinase * MeSH
- Dibenzocycloheptenes * MeSH
- Farnesyltranstransferase * MeSH
- GTP Phosphohydrolases * MeSH
- Protein Kinase Inhibitors * MeSH
- lonafarnib MeSH Browser
- Membrane Proteins MeSH
- MicroRNAs * MeSH
- NRAS protein, human MeSH Browser
- Piperidines * MeSH
- Pyridines * MeSH