Poster Presentation 2014 Cutaneous Biology Meeting

“What’s the difference between this wound and that wound?”  Digitisation of wound fluids for the systems biology based analysis of wound microenvironments. (#28)

Daniel A Broszczak 1 , Catherine Tanzer 1 2 , Dayle L Sampson 1 , James A Broadbent 1 , Leila Cuttle 1 3 , Gary Shooter 1 4 , Zee Upton 1 , Roy M Kimble 3 , Tony J Parker 1
  1. Tissue Repair and Regeneration Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Qld, Australia
  2. Griffith University, Gold Coast, Qld, Australia
  3. The Centre for Children’s Burns and Trauma Research, Queensland Children’s Medical Research Institute, University of Queensland, Royal Children’s Hospital, Herston, QLD, Australia
  4. Tissue Therapies, Brisbane, Qld, Australia

The continued technological advances in protein mass spectrometry has enabled unprecedented analytical resolution and sample throughput. So called SWATH™ acquisition is a relatively recent mass spectrometry approach which effectively digitises and collects quantitative information on all detectable peptides in each tissue sample following standardised sample preparation protocols. Simultaneous generation of a sample type specific peptide library facilitates the concomitant identification and quantification of all the peptides in each of the test samples in one experiment. We have utilised SWATH™ acquisition to evaluate the wound fluid microenvironment proteome of chronic leg ulcers and a small number of acute burn wounds. The identification and relative abundance measures of over 1000 proteins were obtained from the chronic wound fluid of healing vs non-healing chronic wounds. Subsequent gene ontology analysis revealed over represented biological processes and molecular functions when examining healing versus non-healing chronic wounds. Furthermore, a similar preliminary analysis of paediatric burn blister fluid, collected at time of patient presentation, revealed a panel of 70 proteins which could stratify those wounds which were grafted from those which were not thus reflecting the clinical decision making. Further verification work is continuing; however, these data suggest that SWATH™ acquisition is a powerful tool for the investigation of the complexities of the wound microenvironment.