DNase 2 is the Main DNA-Degrading Enzyme of the Stratum Corneum
Author Information
Author(s): Heinz Fischer, Jennifer Scherz, Sandra Szabo, Michael Mildner, Charaf Benarafa, Alicia Torriglia, Erwin Tschachler, Leopold Eckhart
Primary Institution: Department of Dermatology, Medical University of Vienna, Vienna, Austria
Hypothesis
What is the main DNase activity in the stratum corneum?
Conclusion
DNase 2 is identified as the predominant DNase on the mammalian skin surface, primarily targeting exogenous DNA.
Supporting Evidence
- DNase 2 was shown to be essential for acid DNase activity in the stratum corneum.
- Knockdown of DNase 2 significantly reduced DNase activity in human skin models.
- DNase 2 activity was absent in the stratum corneum of DNase 2-deficient mice.
Takeaway
The skin has a special enzyme called DNase 2 that helps break down DNA from germs and other sources, keeping our skin healthy.
Methodology
Biochemical and genetic experiments were performed to identify DNase activities in the stratum corneum using DNA degradation assays and zymographic analyses.
Limitations
The study did not achieve complete knockdown of serpinB1, which may limit the conclusions about its role.
Digital Object Identifier (DOI)
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