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| Item Type: | Article |
|---|---|
| Title: | Genetic determinants of micronucleus formation in vivo |
| Creators Name: | Adams, D.J., Barlas, B., McIntyre, R.E., Salguero, I., van der Weyden, L., Barros, A., Vicente, J.R., Karimpour, N., Haider, A., Ranzani, M., Turner, G., Thompson, N.A., Harle, V., Olvera-León, R., Robles-Espinoza, C.D., Speak, A.O., Geisler, N., Weninger, W.J., Geyer, S.H., Hewinson, J., Karp, N.A., Fu, B., Yang, F., Kozik, Z., Choudhary, J., Yu, L., van Ruiten, M.S., Rowland, B.D., Lelliott, C.J., Del Castillo Velasco-Herrera, M., Verstraten, R., Bruckner, L., Henssen, A.G., Rooimans, M.A., de Lange, J., Mohun, T.J., Arends, M.J., Kentistou, K.A., Coelho, P.A., Zhao, Y., Zecchini, H., Perry, J.R.B., Jackson, S.P. and Balmus, G. |
| Abstract: | Genomic instability arising from defective responses to DNA damage or mitotic chromosomal imbalances can lead to the sequestration of DNA in aberrant extranuclear structures called micronuclei (MN). Although MN are a hallmark of ageing and diseases associated with genomic instability, the catalogue of genetic players that regulate the generation of MN remains to be determined. Here we analyse 997 mouse mutant lines, revealing 145 genes whose loss significantly increases (n = 71) or decreases (n = 74) MN formation, including many genes whose orthologues are linked to human disease. We found that mice null for Dscc1, which showed the most significant increase in MN, also displayed a range of phenotypes characteristic of patients with cohesinopathy disorders. After validating the DSCC1-associated MN instability phenotype in human cells, we used genome-wide CRISPR-Cas9 screening to define synthetic lethal and synthetic rescue interactors. We found that the loss of SIRT1 can rescue phenotypes associated with DSCC1 loss in a manner paralleling restoration of protein acetylation of SMC3. Our study reveals factors involved in maintaining genomic stability and shows how this information can be used to identify mechanisms that are relevant to human disease biology. |
| Keywords: | Cancer Genetics, DNA Damage and Repair, Genomic Instability, High-Throughput Screening, Animals, Mice |
| Source: | Nature |
| ISSN: | 0028-0836 |
| Publisher: | Nature Publishing Group |
| Volume: | 627 |
| Number: | 8002 |
| Page Range: | 130–136 |
| Date: | 7 March 2024 |
| Official Publication: | https://doi.org/10.1038/s41586-023-07009-0 |
| PubMed: | View item in PubMed |
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