Differential neuroproteomic and systems biology analysis of spinal cord injury

Ahmed Moghieb, Helen Bramlett, Jyotirmoy H. Das, Zhihui Yang, Tyler Selig, Richard A. Yost, Michael S. Wang, W. Dalton Dietrich, Kevin K W Wang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Acute spinal cord injury (SCI) is a devastating condition with many consequences and no known effective treatment. Although it is quite easy to diagnose traumatic SCI, the assessment of injury severity and projection of disease progression or recovery are often challenging, as no consensus biomarkers have been clearly identified. Here rats were subjected to experimental moderate or severe thoracic SCI. At 24h and 7d postinjury, spinal cord segment caudal to injury center versus sham samples was harvested and subjected to differential proteomic analysis. Cationic/anionic-exchange chromatography, followed by 1D polyacrylamide gel electrophoresis, was used to reduce protein complexity. A reverse phase liquid chromatography-tandem mass spectrometry proteomic platform was then utilized to identify proteome changes associated with SCI. Twenty-two and 22 proteins were up-regulated at 24 h and 7 day after SCI, respectively; whereas 19 and 16 proteins are down-regulated at 24 h and 7 day after SCI, respectively, when compared with sham control. A subset of 12 proteins were identified as candidate SCI biomarkers-TF (Transferrin), FASN (Fatty acid synthase), NME1 (Nucleoside diphosphate kinase 1), STMN1 (Stathmin 1), EEF2 (Eukaryotic translation elongation factor 2), CTSD (Cathepsin D), ANXA1 (Annexin A1), ANXA2 (Annexin A2), PGM1 (Phosphoglucomutase 1), PEA15 (Phosphoprotein enriched in astrocytes 15), GOT2 (Glutamic-oxaloacetic transaminase 2), and TPI-1 (Triosephosphate isomerase 1), data are available via ProteomeXchange with identifier PXD003473. In addition, Transferrin, Cathepsin D, and TPI-1 and PEA15 were further verified in rat spinal cord tissue and/or CSF samples after SCI and in human CSF samples from moderate/severe SCI patients. Lastly, a systems biology approach was utilized to determine the critical biochemical pathways and interactome in the pathogenesis of SCI. Thus, SCI candidate biomarkers identified can be used to correlate with disease progression or to identify potential SCI therapeutic targets.

Original languageEnglish (US)
Pages (from-to)2379-2395
Number of pages17
JournalMolecular and Cellular Proteomics
Volume15
Issue number7
DOIs
StatePublished - Jul 1 2016

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Systems Biology
Spinal Cord Injuries
Triose-Phosphate Isomerase
Biomarkers
Cathepsin D
Phosphoproteins
Transferrin
Astrocytes
Proteomics
Disease Progression
Spinal Cord
NM23 Nucleoside Diphosphate Kinases
Proteins
Stathmin
Rats
Annexin A1
Peptide Elongation Factor 2
Phosphoglucomutase
Fatty Acid Synthases
Thoracic Injuries

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Analytical Chemistry

Cite this

Differential neuroproteomic and systems biology analysis of spinal cord injury. / Moghieb, Ahmed; Bramlett, Helen; Das, Jyotirmoy H.; Yang, Zhihui; Selig, Tyler; Yost, Richard A.; Wang, Michael S.; Dalton Dietrich, W.; Wang, Kevin K W.

In: Molecular and Cellular Proteomics, Vol. 15, No. 7, 01.07.2016, p. 2379-2395.

Research output: Contribution to journalArticle

Moghieb, Ahmed ; Bramlett, Helen ; Das, Jyotirmoy H. ; Yang, Zhihui ; Selig, Tyler ; Yost, Richard A. ; Wang, Michael S. ; Dalton Dietrich, W. ; Wang, Kevin K W. / Differential neuroproteomic and systems biology analysis of spinal cord injury. In: Molecular and Cellular Proteomics. 2016 ; Vol. 15, No. 7. pp. 2379-2395.
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