{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nSLF2 is an essential component of the RAD18‐SLF1/2‐SMC5/6 genome stability pathway, playing a critical role in ensuring proper DNA replication and repair. Defects in SLF2 compromise the cell’s ability to effectively replicate through challenging DNA structures—such as G-quadruplexes—and disrupt normal sister chromatid cohesion, ultimately leading to replication stress. These deficiencies are linked to severe developmental abnormalities, including microcephaly, short stature, and chromosomal instability, as observed in the recently characterized Atelís Syndrome."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its role in replication, SLF2 has been identified as an ATRX-associated factor through proximity-dependent biotinylation studies. Its interaction with ATRX, along with chromatin maintenance proteins, suggests that SLF2 contributes to the regulation of chromatin structure at repetitive DNA regions, including telomeres. In this context, SLF2 appears to help inhibit telomere exchanges and maintain telomeric stability, broadening its impact on genome integrity."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn addition to safeguarding replication and chromatin structure, SLF2 functions as a key mediator of the DNA damage response (DDR). Loss of SLF2 results in the diminished presence of crucial DDR factors such as Claspin and impaired CHK1 activation, leading to an accumulation of DNA damage. This disruption predisposes cells to vulnerabilities in the post-translational SUMOylation pathway, a dependency that can be exploited therapeutically in aggressive B-cell lymphomas. Hence, SLF2 serves both as a critical DDR regulator and as a potential biomarker for certain malignancies."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Laura J Grange, John J Reynolds, Farid Ullah, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Pathogenic variants in SLF2 and SMC5 cause segmented chromosomes and mosaic variegated hyperploidy."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Nat Commun (2022)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/s41467-022-34349-8"}], "href": "https://doi.org/10.1038/s41467-022-34349-8"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "36333305"}], "href": "https://pubmed.ncbi.nlm.nih.gov/36333305"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "William A Scott, Erum Z Dhanji, Boris J A Dyakov, et al. "}, {"type": "b", "children": [{"type": "t", "text": "ATRX proximal protein associations boast roles beyond histone deposition."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS Genet (2021)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pgen.1009909"}], "href": "https://doi.org/10.1371/journal.pgen.1009909"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "34780483"}], "href": "https://pubmed.ncbi.nlm.nih.gov/34780483"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Le Zhang, Matthias Wirth, Upayan Patra, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Actionable loss of SLF2 drives B-cell lymphomagenesis and impairs the DNA damage response."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "EMBO Mol Med (2023)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.15252/emmm.202216431"}], "href": "https://doi.org/10.15252/emmm.202216431"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "37485814"}], "href": "https://pubmed.ncbi.nlm.nih.gov/37485814"}]}]}]}