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Updated: Jan 9, 2026

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
Published on: October 5, 2015
Serum Omics Analysis Reveals Tissue Damage and Metabolic Reprogramming in Cavitary Pulmonary Tuberculosis
Jianhai Wang1,2,3, Dong Zhang4, Chunnan Du1
1Department of Tuberculosis, Haihe Clinical School, Tianjin Medical University, Tianjin 300350, China.
Cavitary pulmonary tuberculosis (PTB) involves destructive lung damage. Researchers identified suppressed cell junction proteins and altered metabolism, with DSG4 and amyl salicylate showing potential as biomarkers for this severe TB form.
Area of Science:
- Biochemistry
- Immunology
- Infectious Diseases
Background:
- Cavitary pulmonary tuberculosis (cPTB) is a severe form of Mycobacterium tuberculosis infection.
- cPTB is linked to poor treatment outcomes and high transmissibility.
- Understanding systemic changes in cPTB is crucial for improving patient care.
Purpose of the Study:
- To identify systemic molecular signatures associated with cavitary pulmonary tuberculosis.
- To compare molecular profiles of cPTB, noncavitary PTB, and healthy individuals.
- To discover potential biomarkers for cPTB diagnosis and understanding disease mechanisms.
Main Methods:
- Serum profiling using proximity-extension proteomics.
- Untargeted ultraperformance liquid-chromatography tandem mass spectrometry (UPLC-MS/MS).
- Multigroup analysis and integrated network mapping of proteomic and metabolomic data.
Main Results:
- Pulmonary tuberculosis (PTB) showed suppressed cell-junction proteins and altered amino acid/lipid metabolism.
- cPTB exhibited more pronounced metabolic changes and differences in cardiomyocyte-associated proteins compared to noncavitary PTB.
- Down-regulation of desmoglein-4 (DSG4) and amyl salicylate was observed, with their combined levels discriminating cPTB (AUC = 0.738).
Conclusions:
- Cavity formation in PTB is associated with cardiovascular pathway perturbations and significant metabolic reprogramming.
- The DSG4-amyl salicylate pair is a potential exploratory biomarker signature for cPTB.
- Further validation in independent cohorts is necessary before clinical application or therapeutic use.
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