Host DNA Depletion Optimization Data for Blood Culture Sequencing

Jawad Ali's dataset details the development of a saponin and salt-activated nuclease method for depleting host DNA in blood cultures. The 11.5 KB Excel file contains experimental results for optimizing conditions to improve bacterial DNA recovery for sepsis diagnosis. The data was uploaded to figshare in April 2026.

Use Cases

• Compare host DNA reduction fold-changes (e.g., 38-fold, 10-fold) between different nuclease types (HL-SAN, M-SAN) and bacterial species (E. coli, S. aureus).
• Analyze the effect of saponin concentration (2% to 5%) and salt conditions (NaCl, MgCl2) on host DNA depletion efficiency.
• Evaluate the impact of bead-beating duration (6 min vs. 10 min) on DNA fragment size distribution for bacterial genome recovery.

Strengths

• Dataset provides specific, quantified results such as a 38-fold reduction in host DNA for key pathogens.
• Includes validation data from both spiked and clinical-positive blood cultures for relevant BSI pathogens.

Limitations

• The dataset is very small at 11.5 KB, indicating limited scope and likely a summary of results rather than raw experimental data.
• Specific sample sizes, row counts, and full experimental replicates are not provided in the description.

Provenance

Source

Jawad Ali, via figshare.

Collection Method

Experimental data from testing saponin concentrations, nucleases, salt conditions, and bead-beating durations on spiked and clinical blood cultures.

Freshness

Last updated in April 2026, indicating recent experimental work.