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Trauma-associated human neutrophil alterations revealed by comparative proteomics profiling
Jian-Ying Zhou1, Ravi K Krovvidi, Yuqian Gao
1Biological Sciences Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
Proteomics. Clinical Applications
|April 17, 2013
Summary
Severe trauma activates polymorphonuclear neutrophils (PMNs) and inhibits their apoptosis. This study reveals key proteome changes in neutrophils after injury, offering insights into innate immune responses.
Area of Science:
- Immunology
- Proteomics
- Trauma Research
Background:
- Polymorphonuclear neutrophils (PMNs) are crucial for innate immunity following severe trauma.
- The comprehensive proteomic response of neutrophils to trauma remains largely uncharacterized.
Purpose of the Study:
- To investigate the cellular proteome changes in human PMNs after severe traumatic injury.
- To compare proteomic findings with transcriptomic data and elucidate neutrophil functional responses.
Main Methods:
- Utilized 2D-LC-MS/MS-based shotgun proteomics for comparative proteome profiling.
- Analyzed human PMNs from severe trauma patients and healthy controls.
- Integrated proteomics data with transcriptomics data from an independent patient cohort.
Main Results:
- Identified significant abundance changes in 197 out of ~2500 proteins in PMNs post-trauma.
- Observed consistency between protein and mRNA abundance changes for most proteins.
- Indicated increased protein secretion and identified involvement in immune response, biosynthesis, NRF2-mediated oxidative stress, and apoptosis pathways.
Conclusions:
- Trauma leads to increased neutrophil activation and suppressed neutrophil apoptosis.
- Provides a detailed proteomic landscape of neutrophil response to trauma.
- Offers a valuable data resource for future research on trauma-associated neutrophil functions.
