Streptodornase: The DNase That Supercharges Streptococcal Virulence “Streptodornase is basically a DNA cutter that helps bacteria escape our immune system. Think of it as a molecular scissor that lets them break free from our traps.” Streptococcus pyogenes owes much of its invasive capability to a secreted DNase collectively termed streptodornase. While traditionally described as an enzyme that “degrades extracellular DNA,” its biological significance is far more strategic: streptodornase is a precision immunity-evasion factor that rewires host–pathogen interactions by eliminating DNA-based structural and immunological barriers. Firstly the question: Why DNA Degradation Matters in Infection? During acute infection, host tissues accumulate extracellular DNA originating from Neutrophil extracellular traps (NETs) Necrotic host cells Viscous inflammatory exudates This DNA is not passive debris; it is a biophysical defense element. NETs, in particular, immobiliz...
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