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Lepe BA, Zheng CR, Leddy OK, Allsup BL, Solomon SL, Bryson BD. Protease shaving of Mycobacterium tuberculosis facilitates vaccine antigen discovery and delivery of novel cargoes to the Mtb surface. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.02.601718. [PMID: 39005324 PMCID: PMC11245043 DOI: 10.1101/2024.07.02.601718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), is the leading cause of infectious disease death and lacks a vaccine capable of protecting adults from pulmonary TB. Studies have shown that Mtb uses a variety of mechanisms to evade host immunity. Secreted Mtb proteins such as Type VII secretion system substrates have been characterized for their ability to modulate anti-Mtb immunity; however, studies of other pathogens such as Salmonella Typhi and Staphylococcus aureus have revealed that outer membrane proteins can also interact with the innate and adaptive immune system. The Mtb outer membrane proteome has received relatively less attention due to limited techniques available to interrogate this compartment. We filled this gap by deploying protease shaving and quantitative mass spectrometry to identify Mtb outer membrane proteins which serve as nodes in the Mtb-host interaction network. These analyses revealed several novel Mtb proteins on the Mtb surface largely derived from the PE/PPE class of Mtb proteins, including PPE18, a component of a leading Mtb vaccine candidate. We next exploited the localization of PPE18 to decorate the Mtb surface with heterologous proteins and deliver these surface-engineered Mtb to the phagosome. Together, these studies reveal potential novel targets for new Mtb vaccines as well as facilitate new approaches to study difficult to study cellular compartments during infection.
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Affiliation(s)
- Bianca A. Lepe
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
| | - Christine R. Zheng
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
| | - Owen K. Leddy
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, USA
| | - Benjamin L. Allsup
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
| | - Sydney L. Solomon
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
| | - Bryan D. Bryson
- Department of Biological Engineering, MIT, Cambridge, USA
- Ragon Institute of Mass General, Harvard, and MIT, Cambridge, USA
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Sun H, Sheng G, Xu Y, Chu H, Cao T, Dai G, Tian N, Duan H, Sun Z. Efflux pump Rv1258c activates novel functions of the oxidative stress and via the VII secretion system ESX-3-mediated iron metabolic pathway in Mycobacterium tuberculosis. Microbes Infect 2024; 26:105239. [PMID: 37863312 DOI: 10.1016/j.micinf.2023.105239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 10/08/2023] [Accepted: 10/17/2023] [Indexed: 10/22/2023]
Abstract
Oxidative stress and iron metabolism are essential for Mycobacterium tuberculosis (M.tb) survival in host cells. The efflux pump Rv1258c belongs to the major facilitator superfamily (MFS) and can actively pump drugs to promote certain drug resistance in M.tb. In this study, we compared H37RvΔRv1258c with wild-type (WT) M.tb H37Rv. The qRT-PCR results suggested that Rv1258c is potentially involved in the iron metabolic pathway by regulating the expression of ESX-3, which is required for iron uptake. Protein-Protein Affinity Predictor (PPA-Pred2) and the artificial intelligence program AlphaFold 2 were used for prediction and showed that Rv1258c has direct interactions with PPE4 and EccD3 but weak interactions with EccB3. This was further determined via protein-protein interaction analysis of the yeast two-hybrid expression system. By comparing mutant H37RvΔRv1258c strains with WT strains, we discovered that the absence of Rv1258c led to elevated intracellular H+ potential and NAD+/NADH ratios in M.tb, thereby resulting in oxidative stress. We hypothesize that the efflux pump Rv1258c not only has the function of regulating drug resistance in M.tb but also has a novel function in activating oxidative stress and regulating ESX-3-associated iron metabolism in M.tb.
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Affiliation(s)
- Hong Sun
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Gang Sheng
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Yuhui Xu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing 100700, China
| | - Hongqian Chu
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Tingming Cao
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Guangming Dai
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Na Tian
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Huijuan Duan
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Zhaogang Sun
- Translational Medicine Center, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China, Beijing Key Laboratory in Drug Resistant Tuberculosis Research, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China.
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Ma G, Luo P, Xu R, Ma R, Qiu L, Xu C, Yang R, Li Y, Zhao Z, Huang L, Yang Y, Wang P. Improving the profile and reliability of cytoplasmic proteins from M. tuberculosis using biomimetic affinity chromatography coupled with LC-MS/MS analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1225:123756. [PMID: 37236071 DOI: 10.1016/j.jchromb.2023.123756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 05/02/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023]
Abstract
M. tuberculosis is the most successful intracellular pathogen and remains a major threat to human health. It is crucial to investigate the profile of cytoplasmic proteins from M. tuberculosis for pathogenesis, clinical markers, and protein vaccine development. In this study, six biomimetic affinity chromatography (BiAC) resins with high differences were selected for M. tuberculosis-cytoplasmic protein fractionation. All fractions were identified using liquid chromatography-mass spectrometry (LC-MS/MS) analysis. A total of 1246 M. tuberculosis proteins were detected (p < 0.05), among which 1092 M. tuberculosis proteins were identified in BiAC fractionations and 714 M. tuberculosis proteins in un-fractionations (Table S1.3.1). The majority of 66.8% (831/1246) identifications were distributed in the range of Mw 7.0-70.0 kDa, pI 3.5-8.0, and Gravy values <0.3. Furthermore, 560 M. tuberculosis proteins were detected in both the BiAC fractionations and un-fractionations. Compared with the un-fractionations, the average number of prot_matches, prot_cover, prot_sequence, and emPAI values of these 560 proteins in the BiAC fractionations were increased by 3.791, 1.420, 1.307, and 1.788 times, respectively. Overall, compared with un-fractionations, the confidence and profile of M. tuberculosis cytoplasmic proteins were improved by BiAC fractionations coupled with LC-MS/MS analysis. The strategy of BiAC fractionation can be used as an effective method for pre-separating protein mixtures in proteomic studies.
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Affiliation(s)
- Guorong Ma
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China; Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases, Ningxia Medical University, Yinchuan 750004, PR China.
| | - Pengzheng Luo
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Ruiqiang Xu
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Rui Ma
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China; Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases, Ningxia Medical University, Yinchuan 750004, PR China
| | - Lei Qiu
- The Fourth People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750000, PR China
| | - Chenran Xu
- School of Clinical Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Rang Yang
- School of Clinical Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Yating Li
- School of Clinical Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Zhihao Zhao
- School of Clinical Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Ling Huang
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China
| | - Yanhui Yang
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China; Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases, Ningxia Medical University, Yinchuan 750004, PR China
| | - Pei Wang
- School of Basic Medical, Ningxia Medical University, Yinchuan 750004, PR China.
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Yu X, Jiang S, Li Y, Zhou H, Wei Y, Li X, Zhang Y, Hu P, Wu H, Wang H, Wu S, Zhang S. Development of a new cellular immunological detection method for tuberculosis based on HupB protein induced IL-6 release test. Front Microbiol 2023; 14:1148503. [PMID: 37077246 PMCID: PMC10106748 DOI: 10.3389/fmicb.2023.1148503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/14/2023] [Indexed: 04/05/2023] Open
Abstract
ObjectiveAs a virulence factor, HupB plays important roles in the survival of MTB after infection and modulates the host immune response. In the current study, we aim to explore a new cellular immunological detection method for tuberculosis infection detection based on HupB protein.MethodsHupB was used to stimulate PBMCs extracted from pulmonary tuberculosis (PTB) patients, and secreted cytokines was examined. Then, we constructed a single center and a multi-center clinical trials to collect PBMCs from PTB patients, nPTB patients, or healthy volunteers to verify our findings.ResultsCytokine’s screening illustrated that IL-6 was the only cytokine released after HupB stimulation. Single-center and multi-center clinical trials showed that HupB stimulation significantly increased the level of IL-6 in the supernatant of PBMCs from PTB patients. Then we compared the specificity and sensitivity of HupB induced IL-6 release assay with ESAT-6 and CFP10 induced interferon γ release assay (IGRA), and found in smear positive PTB patients, the specificity and sensitivity of HupB induced IL-6 release assay was better than IGRA, and in smear negative PTB patients, the sensitivity was better. Combination of both assays provided an improved specificity and sensitivity for tuberculosis diagnosis.ConclusionThis study explored an immunological detection method for tuberculosis infection cells based on HupB protein-induced IL-6 release test, which can be used to enhance the diagnosis diagnostic accuracy of TB.
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Affiliation(s)
- Xiaoli Yu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Shengsheng Jiang
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Yang Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Huaiheng Zhou
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Yutong Wei
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Xuefang Li
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Ye Zhang
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Peng Hu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Haoming Wu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Hualin Wang
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
- *Correspondence: Hualin Wang,
| | - Shimin Wu
- Center for Clinical Laboratory, General Hospital of the Yangtze River Shipping, Wuhan Brain Hospital, Wuhan, China
- Shimin Wu,
| | - Shulin Zhang
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shulin Zhang,
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Ma G, Wang P, Yang Y, Wang W, Ma J, Zhou L, Ouyang J, Li R, Zhang S. emPAI-assisted strategy enhances screening and assessment of Mycobacterium tuberculosis infection serological markers. Microb Biotechnol 2021; 14:1827-1838. [PMID: 34173722 PMCID: PMC8313264 DOI: 10.1111/1751-7915.13829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 04/12/2021] [Accepted: 04/25/2021] [Indexed: 01/17/2023] Open
Abstract
Discovering new serological markers of Mycobacterium tuberculosis (MTB) infection and establishing a rapid and efficient detection technology is of great significance for the prevention and control of tuberculosis. In this study, we established an exponentially modified protein abundance index (emPAI) value-assisted strategy to investigate and improve the screening efficiency of serological biomarkers of tuberculosis. First, we used LC-MS/MS to analyse MTB culture filtrate proteins (MTB-CFPs), and 632 MTB proteins were identified. Then, the characteristic values of MTB-CFPs - including emPAI value, molecular weight (Mw), isoelectric point (pI), grand average of hydropathy (GRAVY), transmembrane domain (TMD) and functional groups were calculated. Next, we successfully prepared 10 MTB proteins with emPAI value > 1.0 and recombinantly expressed these proteins in Escherichia coli. At the same time, 3 MTB proteins with emPAI between 0.1 and 0.5 were randomly selected as the control groups, and the immunogenicity of the recombinant MTB proteins was detected using ELISA. The sensitivity and receiver operating characteristic (ROC) curves were calculated for each recombinant MTB protein. The results showed that the areas under the curve (AUC) value of Rv2031c, Rv0577, Rv0831c, Rv0934 and Rv3248c were all higher than those of Rv3875 (AUC, 0.6643). Further analysis of the relationship between emPAI value and antibody sensitivity, AUC value and antibody affinity in mice immunized with recombinant MTB protein showed that emPAI values were positively correlated with them, and R-squared value ranged from 0.64 to 0.79. The only exception was ESAT-6 (encoded by the Rv3875 gene), which AUC value was relatively low owing to its strong immunosuppressive properties. This study provides a rationale for the serological marker screening of emPAI-assisted tuberculosis clinical test. The results also provide new technical support for the screening of candidate serological markers of infectious diseases in the future.
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Affiliation(s)
- Guorong Ma
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesNingxia Medical UniversityYinchuan750004China
| | - Pei Wang
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
| | - Yanhui Yang
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesNingxia Medical UniversityYinchuan750004China
| | - Wei Wang
- College of Biological Science and EngineeringNorthern University for NationalitiesYinchuan750021China
| | - Jinhua Ma
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesNingxia Medical UniversityYinchuan750004China
| | - Lin Zhou
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesNingxia Medical UniversityYinchuan750004China
| | - Junlin Ouyang
- School of Basic Medical SciencesNingxia Medical UniversityYinchuan750004China
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesNingxia Medical UniversityYinchuan750004China
| | - Rongxiu Li
- State Key Laboratory of Microbial MetabolismSchool of Life Sciences & BiotechnologyShanghai Jiao Tong UniversityShanghai200240China
| | - Shulin Zhang
- Department of Immunology and MicrobiologySchool of MedicineShanghai Jiao Tong UniversityShanghai200025China
- Tuberculosis Research CenterSchool of MedicineShanghai Public Health Clinical CenterShanghai201508China
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6
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Kaushik AC, Wu Q, Lin L, Li H, Zhao L, Wen Z, Song Y, Wu Q, Wang J, Guo X, Wang H, Yu X, Wei D, Zhang S. Exosomal ncRNAs profiling of mycobacterial infection identified miRNA-185-5p as a novel biomarker for tuberculosis. Brief Bioinform 2021; 22:6309357. [PMID: 34169968 DOI: 10.1093/bib/bbab210] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND There are ever increasing researches implying that noncoded RNAs (ncRNAs) specifically circular RNAs (circRNAs) and microRNAs (miRNAs) in exosomes play vital roles in respiratory disease. However, the detailed mechanisms persist to be unclear in mycobacterial infection. METHODS In order to detect circRNAs and miRNAs expression pattern and potential biological function in tuberculosis, we performed immense parallel sequencing for exosomal ncRNAs from THP-1-derived macrophages infected by Mycobacterium tuberculosis H37Ra, Mycobacterium bovis BCG and control Streptococcus pneumonia, respectively and uninfected normal cells. Besides, THP-1-derived macrophages were used to verify the validation of differential miRNAs, and monocytes from PBMCs and clinical plasma samples were used to further validate differentially expressed miR-185-5p. RESULTS Many exosomal circRNAs and miRNAs associated with tuberculosis infection were recognized. Extensive enrichment analyses were performed to illustrate the major effects of altered ncRNAs expression. Moreover, the miRNA-mRNA and circRNA-miRNA networks were created and expected to reveal their interrelationship. Further, significant differentially expressed miRNAs based on Exo-BCG, Exo-Ra and Exo-Control, were evaluated, and the potential target mRNAs and function were analyzed. Eventually, miR-185-5p was collected as a promising potential biomarker for tuberculosis. CONCLUSION Our findings provide a new vision for exploring biological functions of ncRNAs in mycobacterial infection and screening novel potential biomarkers. To sum up, exosomal ncRNAs might represent useful functional biomarkers in tuberculosis pathogenesis and diagnosis.
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Affiliation(s)
- Aman Chandra Kaushik
- State Key Laboratory of Microbial Metabolism, School of life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Qiqi Wu
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Lin
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haibo Li
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Longqi Zhao
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Zilu Wen
- Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Yanzheng Song
- Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Qihang Wu
- Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Jin Wang
- Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
| | - Xiaokui Guo
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hualin Wang
- School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Xiaoli Yu
- School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Dongqing Wei
- State Key Laboratory of Microbial Metabolism, School of life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Shulin Zhang
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Research Center for Tuberculosis, Shanghai Public Health Clinical Center, Shanghai, China
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7
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Hermann C, Karamchand L, Blackburn JM, Soares NC. Cell Envelope Proteomics of Mycobacteria. J Proteome Res 2020; 20:94-109. [PMID: 33140963 DOI: 10.1021/acs.jproteome.0c00650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The World Health Organization (WHO) estimates that Mycobacterium tuberculosis, the most pathogenic mycobacterium species to humans, has infected up to a quarter of the world's population, with the occurrence of multidrug-resistant strains on the rise. Research into the detailed composition of the cell envelope proteome in mycobacteria over the last 20 years has formed a key part of the efforts to understand host-pathogen interactions and to control the current tuberculosis epidemic. This is due to the great importance of the cell envelope proteome during infection and during the development of antibiotic resistance as well as the search of surface-exposed proteins that could be targeted by therapeutics and vaccines. A variety of experimental approaches and mycobacterial species have been used in proteomic studies thus far. Here we provide for the first time an extensive summary of the different approaches to isolate the mycobacterial cell envelope, highlight some of the limitations of the studies performed thus far, and comment on how the recent advances in membrane proteomics in other fields might be translated into the field of mycobacteria to provide deeper coverage.
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Affiliation(s)
- Clemens Hermann
- Department of Integrative Biomedical Sciences, Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Leshern Karamchand
- National Research Council Canada, Nanotechnology Research Centre, Biomedical Nanotechnologies, 11421 Saskatchewan Drive NW, Edmonton, Alberta T6G 2M9, Canada
| | - Jonathan M Blackburn
- Department of Integrative Biomedical Sciences, Institute of Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Nelson C Soares
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.,College of Pharmacy, Department of Medicinal Chemistry, University of Sharjah, Sharjah 27272, United Arab Emirates
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8
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Ma G, Pan J, Han J, Gao L, Zhang S, Li R. Identification of M. tuberculosis antigens in the sera of tuberculosis patients using biomimetic affinity chromatography in conjunction with ESI-CID-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:452-458. [PMID: 28820984 DOI: 10.1016/j.jchromb.2017.07.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 07/19/2017] [Accepted: 07/28/2017] [Indexed: 11/16/2022]
Abstract
The profiling of abnormally-expressed proteins in host cells using mass spectrometry (MS) analysis is a classical approach for screening disease-associated biomarkers in clinical diagnosis. However, few pathogen-specific antigens can currently be detected in serum using this proteomic approach, since these are very low-abundant proteins that are easily masked by host high-abundant proteins. Identification of pathogen-specific antigens in the sera of tuberculosis patients is crucial for the clinical diagnosis of this infectious disease, especially in immune-compromised patients. In the present study, two biomimetic affinity chromatography (BiAC) media, At-23 and A115-94, were selected from a library of BiAC media and used to selectively fractionate Albumin and Immunoglobulin from sera, respectively, prior to MS analyses. Each fraction was collected and screened against the proteomic database of M. tuberculosis complex. Three antigens, FbpA, FbpB and BfrB, were identified with two distinct peptides in BiAC-fractionated sera from tuberculosis patients, which were confirmed by Western blotting. Moreover, the identification of pathogen-specific antigens in sera by BiAC in conjunction with ESI-CID-MS/MS represents a promising strategy for the discovery of disease-associated biomarkers in other diseases.
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Affiliation(s)
- Guorong Ma
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinting Pan
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jincheng Han
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lina Gao
- Clinical Laboratory of the Second Affiliated Hospital, Lanzhou University, Lanzhou 730030, China
| | - Shulin Zhang
- Department of Immunology and Microbiology, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China.
| | - Rongxiu Li
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; Engineering Research Center of Cells & Therapeutic Antibodies, Ministry of Education, Shanghai, China.
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