Genome-derived cytosolic DNA contributes to type I interferon expression and immunogenicity of B-cell lymphoma cells

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Abstract

We recently provided evidence that genome-derived DNA is present in the cytosol of many tumor cells. Genomic loci that give rise to cytosolic DNA can potentially form non-B DNA structures including triple-stranded RNA:DNA structures (R-loops). The RNA:DNA-specific endonuclease RNaseh1 reduced the levels of cytosolic DNA and type I interferon-dependent rejection of B-cell lymphoma suggesting that cytosolic DNA may contribute to immune surveillance of B-cell lymphoma.

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