Plasma DNA Profile Associated with DNASE1L3 Gene Mutations: Clinical Observations, Relationships to Nuclease Substrate Preference, and In Vivo Correction
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Plasma DNA fragmentomics is an emerging area in cell-free DNA diagnostics and research. In murine models, it has been shown that the extracellular DNase, DNASE1L3, plays a role in the fragmentation of plasma DNA. In humans, DNASE1L3 deficiency causes familial monogenic systemic lupus erythematosus with childhood onset and anti-dsDNA reactivity. In this study, we found that human patients with DNASE1L3 disease-associated gene variations showed aberrations in size and a reduction of a "CC" end motif of plasma DNA. Furthermore, we demonstrated that DNA from DNASE1L3-digested cell nuclei showed a median length of 153 bp with CC motif frequencies resembling plasma DNA from healthy individuals. Adeno-associated virus-based transduction of Dnase1l3 into Dnase1l3-deficient mice restored the end motif profiles to those seen in the plasma DNA of wild-type mice. Our findings demonstrate that DNASE1L3 is an important player in the fragmentation of plasma DNA, which appears to act in a cell-extrinsic manner to regulate plasma DNA size and motif frequency.
Aljaberi N, Bharathan A, Gopal R, Mohammed E, Al Shibli F, Tabouni M Lupus Sci Med. 2025; 12(1).
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Che H, Stanley K, Jatsenko T, Thienpont B, Vermeesch J Extracell Vesicles Circ Nucl Acids. 2024; 3(3):216-234.
PMID: 39697489 PMC: 11648412. DOI: 10.20517/evcna.2022.21.
Emerging frontiers of cell-free DNA fragmentomics.
Hu X, Ding S, Jiang P Extracell Vesicles Circ Nucl Acids. 2024; 3(4):380-392.
PMID: 39697357 PMC: 11648524. DOI: 10.20517/evcna.2022.34.
Malki Y, Kang G, Lam W, Lam W, Zhou Q, Cheng S Genome Res. 2024; 35(1):31-42.
PMID: 39603706 PMC: 11789642. DOI: 10.1101/gr.279667.124.
Cell-free DNA from germline TP53 mutation carriers reflect cancer-like fragmentation patterns.
Wong D, Tageldein M, Luo P, Ensminger E, Bruce J, Oldfield L Nat Commun. 2024; 15(1):7386.
PMID: 39191772 PMC: 11349871. DOI: 10.1038/s41467-024-51529-w.