Identification of putative biomarkers for the serodiagnosis of drug-resistant Mycobacterium tuberculosis

Proteome Science

Research

Qingzhong Wang¹  Jun Yue²  Jie Wang²  ZhenLing Cui²  Wenjie Wang³  Lu Zhang³  Honghai Wang³  Ying Xu³  Wenxi Xu³  Xuelian Zhang³  Yanyan Liu³ 

[1] Shanghai Centre for Clinical Laboratory, 200126, Shanghai, Peoples Republic of China;Shanghai Pulmonary Hospital, Tongji University, 200433, Shanghai, Peoples Republic of China;State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, 220 Handan Road, 200433, Shanghai, Peoples Republic of China;

关键词: Immunoproteomics;    Mycobacterium tuberculosis;    Drug-resistance;    Serodiagnosis;   

DOI  :  10.1186/1477-5956-10-12

 received in 2011-08-27, accepted in 2012-02-25,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundEarly diagnosis and treatment of Mycobacterium tuberculosis infection can prevent most deaths resulting from this pathogen; however, multidrug-resistant strains present serious threats to global tuberculosis control and prevention efforts. In this study, we identified antigens that could be used for the serodiagnosis of drug-resistant M. tuberculosis strains, using a proteomics-based analysis.ResultsSerum from patients infected with drug-resistant or drug-susceptible M. tuberculosis strains and healthy controls was subjected to two-dimensional gel electrophoresis using a western blot approach. This procedure identified nine immunoreactive proteins, which were subjected to MALDI-TOF-MS analysis. Six recombinant proteins, namely rRv2031c, rRv0444c, rRv2145c, rRv3692, rRv0859c, and rRv3040, were expressed and used to determine the immuno-reactivity of 100 serum samples. Antibody reactivity against rRv2031c, rRv3692, and rRv0444c was consistently observed. Among them, the best sensitivity and specificity of rRv3692 were 37% and 95% respectively. Furthermore, when rRv2031c and rRv3692 or rRv2031c, rRv3692, and rRv0444c were combined in 2:1 or equal amounts, the assay sensitivity and specificity were improved to 56.7% and 100% respectively.ConclusionsThese results suggest that Rv2031c, Rv3692, and Rv0444c are possible candidate biomarkers for effective use in the serodiagnosis of drug-resistant tuberculosis infections, and a combined formula of these antigens should be considered when designing a subunit assay kit.

【 授权许可】

CC BY   
© Zhang et al; licensee BioMed Central Ltd. 2012