Viability of chicken cells in response to DNA and dsRNA. Viability of cells was measured by MTT cleavage at 1 h post electroporation unless indicated otherwise. A. DNAinduced
cell death in HD-11 cells after electroporation with 10 mg CT DNA. Bars represent data of 14 experiments (mean ± SEM), normalised to the no DNA sample in all experiments.
Statistical significance was determined prior to normalisation by paired one tailed t-test. ****p < 1011. B. DNA-specific response of HD-11 cells. Cells were electroporated
with 10 mg CT DNA that was untreated or treated with DNase I. Bars represent data from 3 experiments (mean ± SEM), normalised to the no DNA sample for each experiment. C.
Dose-dependent response of HD-11 to electroporation with indicated amounts of DNA. Bars represent data from 3 experiments (mean ± SEM), normalised to the no DNA sample for
each experiment. D. HD-11 death in response to DNA, but not to synthetic dsRNA poly(I:C). HD-11 cells were electroporated with 10 mg CT DNA or poly(I:C), and cleavage of MTT
measured after 1 and 3 h. Bars represent data from 3 experiments (mean ± SEM), normalised to the no DNA samples. E. Cytotoxic effect of DNA from different sources. 10 mg of CT
DNA, salmon sperm DNA or E. coli genomic DNA were used in electroporation. Bars represent results of two electroporations (mean ± range). F. Denatured CT DNA induces cell
death in HD-11 cells, but not mouse macrophages. CT DNA was left intact or boiled for 10 min, transferred to ice and 10 mg used immediately for electroporation. Bars represent data
from 3 (HD-11) or 2 (BMMs) experiments (mean ± SEM, or mean ± range, respectively), normalised to the no DNA sample. G. Response of chicken BMMs to DNA and dsRNA. Intact
or DNaseI-digested CT DNA or poly(I:C) (all 10 mg) were transfected via electroporation and viability was measured at 1 and 3 h after treatment using MTT cleavage. Bars represent
data from 2 experiments (mean ± range)