| First Author | Matsuzaki K | Year | 2015 |
| Journal | Genes Dev | Volume | 29 |
| Issue | 24 | Pages | 2532-46 |
| PubMed ID | 26637282 | Mgi Jnum | J:227115 |
| Mgi Id | MGI:5699764 | Doi | 10.1101/gad.272740.115 |
| Citation | Matsuzaki K, et al. (2015) FANCJ suppresses microsatellite instability and lymphomagenesis independent of the Fanconi anemia pathway. Genes Dev 29(24):2532-46 |
| abstractText | Microsatellites are short tandem repeat sequences that are highly prone to expansion/contraction due to their propensity to form non-B-form DNA structures, which hinder DNA polymerases and provoke template slippage. Although error correction by mismatch repair plays a key role in preventing microsatellite instability (MSI), which is a hallmark of Lynch syndrome, activities must also exist that unwind secondary structures to facilitate replication fidelity. Here, we report that Fancj helicase-deficient mice, while phenotypically resembling Fanconi anemia (FA), are also hypersensitive to replication inhibitors and predisposed to lymphoma. Whereas metabolism of G4-DNA structures is largely unaffected in Fancj(-/-) mice, high levels of spontaneous MSI occur, which is exacerbated by replication inhibition. In contrast, MSI is not observed in Fancd2(-/-) mice but is prevalent in human FA-J patients. Together, these data implicate FANCJ as a key factor required to counteract MSI, which is functionally distinct from its role in the FA pathway. |
