2D-DIGE based urinary proteomics and functional enrichment studies to reveal novel Mycobacterium tuberculosis and human protein biomarker candidates for pulmonary tuberculosis

Amit Kaushik, Sabyasachi Bandyopadhyay, Chhavi Porwal, Alagiri Srinivasan, Lokesh A. Rukmangadachar, Gururao Hariprasad, Srujana Kola, Jitender Kataria, Urvashi B. Singh

Research output: Contribution to journalArticlepeer-review

Abstract

In the absence of a sensitive and specific diagnostic modality capable of detecting all forms of tuberculosis (TB), proteomics may identify specific Mycobacterium tuberculosis (M.tb) proteins in urine, with a potential as biomarkers. To identify candidate biomarkers for TB, proteome profile of urine from pulmonary TB patients was compared with non-disease controls (NDC) and disease controls (DC, Streptococcus pneumonia infected patients) using a combination of two-dimensional difference gel electrophoresis (2D-DIGE) and liquid chromatography tandem mass spectrometry (LCMS/MS). Eleven differentially expressed host proteins and Eighteen high abundant M.tb proteins were identified. Protein-protein interactome (PPI) and functional enrichment analyses like Gene Ontologies, Reactome pathway etc. demonstrated that the human proteins mainly belong to extracellular space and show physiological pathways for immune response and hematological disorders. Whereas, M.tb proteins belong to the cell periphery, plasma membrane and cell wall, and demonstrated catalytic, nucleotide binding and ATPase activities along with other functional processes. The study findings provide valuable inputs about the biomarkers of TB and shed light on the probable disease consequences as an outcome of the bacterial pathogenicity.

Original languageEnglish (US)
Pages (from-to)15-21
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume619
DOIs
StatePublished - Sep 3 2022
Externally publishedYes

Keywords

  • 2D-DIGE
  • Biomarker
  • LC-MS/MS
  • Mycobacterium tuberculosis
  • Proteomics
  • Urine

ASJC Scopus subject areas

  • Molecular Biology
  • Biophysics
  • Biochemistry
  • Cell Biology

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