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Aneuploidy renders cancer cells vulnerable to mitotic checkpoint inhibition. 2021

Yael Cohen-Sharir, and James M McFarland, and Mai Abdusamad, and Carolyn Marquis, and Sara V Bernhard, and Mariya Kazachkova, and Helen Tang, and Marica R Ippolito, and Kathrin Laue, and Johanna Zerbib, and Heidi L H Malaby, and Andrew Jones, and Lisa-Marie Stautmeister, and Irena Bockaj, and René Wardenaar, and Nicholas Lyons, and Ankur Nagaraja, and Adam J Bass, and Diana C J Spierings, and Floris Foijer, and Rameen Beroukhim, and Stefano Santaguida, and Todd R Golub, and Jason Stumpff, and Zuzana Storchová, and Uri Ben-David
Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

Selective targeting of aneuploid cells is an attractive strategy for cancer treatment1. However, it is unclear whether aneuploidy generates any clinically relevant vulnerabilities in cancer cells. Here we mapped the aneuploidy landscapes of about 1,000 human cancer cell lines, and analysed genetic and chemical perturbation screens2-9 to identify cellular vulnerabilities associated with aneuploidy. We found that aneuploid cancer cells show increased sensitivity to genetic perturbation of core components of the spindle assembly checkpoint (SAC), which ensures the proper segregation of chromosomes during mitosis10. Unexpectedly, we also found that aneuploid cancer cells were less sensitive than diploid cells to short-term exposure to multiple SAC inhibitors. Indeed, aneuploid cancer cells became increasingly sensitive to inhibition of SAC over time. Aneuploid cells exhibited aberrant spindle geometry and dynamics, and kept dividing when the SAC was inhibited, resulting in the accumulation of mitotic defects, and in unstable and less-fit karyotypes. Therefore, although aneuploid cancer cells could overcome inhibition of SAC more readily than diploid cells, their long-term proliferation was jeopardized. We identified a specific mitotic kinesin, KIF18A, whose activity was perturbed in aneuploid cancer cells. Aneuploid cancer cells were particularly vulnerable to depletion of KIF18A, and KIF18A overexpression restored their response to SAC inhibition. Our results identify a therapeutically relevant, synthetic lethal interaction between aneuploidy and the SAC.

UI MeSH Term Description Entries
D008941 Spindle Apparatus A microtubule structure that forms during CELL DIVISION. It consists of two SPINDLE POLES, and sets of MICROTUBULES that may include the astral microtubules, the polar microtubules, and the kinetochore microtubules. Mitotic Apparatus,Mitotic Spindle Apparatus,Spindle Apparatus, Mitotic,Meiotic Spindle,Meiotic Spindle Apparatus,Mitotic Spindle,Apparatus, Meiotic Spindle,Apparatus, Mitotic,Apparatus, Mitotic Spindle,Apparatus, Spindle,Meiotic Spindles,Mitotic Spindles,Spindle Apparatus, Meiotic,Spindle, Meiotic,Spindle, Mitotic,Spindles, Meiotic,Spindles, Mitotic
D009369 Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms. Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D004171 Diploidy The chromosomal constitution of cells, in which each type of CHROMOSOME is represented twice. Symbol: 2N or 2X. Diploid,Diploid Cell,Cell, Diploid,Cells, Diploid,Diploid Cells,Diploidies,Diploids
D005804 Genes, Lethal Genes whose loss of function or gain of function MUTATION leads to the death of the carrier prior to maturity. They may be essential genes (GENES, ESSENTIAL) required for viability, or genes which cause a block of function of an essential gene at a time when the essential gene function is required for viability. Alleles, Lethal,Allele, Lethal,Gene, Lethal,Lethal Allele,Lethal Alleles,Lethal Gene,Lethal Genes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000072020 Synthetic Lethal Mutations Mutations in genes which lead to cell or organism death when occurring in combination with mutations in one or more other genes. Synthetic Lethal Mutation,Synthetic Lethality,Lethal Mutation, Synthetic,Lethal Mutations, Synthetic,Lethality, Synthetic,Mutation, Synthetic Lethal,Mutations, Synthetic Lethal
D000782 Aneuploidy The chromosomal constitution of cells which deviate from the normal by the addition or subtraction of CHROMOSOMES, chromosome pairs, or chromosome fragments. In a normally diploid cell (DIPLOIDY) the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is MONOSOMY (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is TRISOMY (symbol: 2N+1). Aneuploid,Aneuploid Cell,Aneuploid Cells,Aneuploidies,Aneuploids,Cell, Aneuploid,Cells, Aneuploid
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D016547 Kinesins A family of microtubule-associated mechanical adenosine triphosphatases, that uses the energy of ATP hydrolysis to move organelles along microtubules including mitosis, meiosis, and axonal transport. Kinesin,Kinesin Heavy-Chain Protein,Kinesin Light-Chain Protein,Kinesin Light-Chain Proteins,Kinesin Superfamily,Heavy-Chain Protein, Kinesin,Light-Chain Protein, Kinesin,Light-Chain Proteins, Kinesin,Protein, Kinesin Heavy-Chain,Protein, Kinesin Light-Chain,Proteins, Kinesin Light-Chain,Superfamily, Kinesin
D045744 Cell Line, Tumor A cell line derived from cultured tumor cells. Tumor Cell Line,Cell Lines, Tumor,Line, Tumor Cell,Lines, Tumor Cell,Tumor Cell Lines

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