of pDCs induced by native as well as oxidized mtDNA treatments was
mainly mediated through TLR9.
Cytokine and chemokine production of primary human pDCs is
potentiated by the presence of a high level of 8-oxoG in mtDNA
To further examine the effects of high 8-oxoG content of
mtDNA on pDC functions, freshly isolated pDCs were treated with
native and oxidized mtDNA purified from nontreated or oxidative
stress-exposed human HL-60 cells, respectively. Levels of TNF-α
and IL-8 were determined in the supernatants of the cell cultures
by means of ELISA. The administration of native mtDNA augmented
the secretion of both TNF-α (Fig. 3A) and IL-8 (Fig. 3B);