1
|
Arifin J, Sakti M, Massi N, Bukhari A, Hamid F, Winangun PA. Vertebral destruction in tuberculous spondylitis correlates with Toll-like Receptor 4 (TLR-4) levels: a cross-sectional study. Ann Med Surg (Lond) 2024; 86:800-804. [PMID: 38333260 PMCID: PMC10849308 DOI: 10.1097/ms9.0000000000001707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 12/29/2023] [Indexed: 02/10/2024] Open
Abstract
Background Tuberculous (TB) spondylitis is a hazardous infectious disease causing significant spinal deformity. Increased toll-like receptor-4 (TLR-4) activity promotes more extensive infections in patients with TB spondylitis, so it has the potential to be used as a biomarker to predict the severity. This study aims to determine the relationship between TLR-4 levels and the degree of vertebral destruction in TB spondylitis patients. Materials and methods A cross-sectional study was conducted from May to October 2023. A total of 27 TB spondylitis samples were then measured for TLR-4 serum levels. Vertebral destruction is assessed based on the Spine At Risk Signs (SARS) criteria on X-ray and MRI examinations. Moreover, the degree of sensory and motor impairment was also assessed in this study. The Spearman correlation test assessed the correlation between TLR-4 levels and vertebral destruction. Results Most of the samples in this study were less than 30 years old (10 people, 37%), female (14 people, 51.9%), had spinal destruction at 1 level (11 people, 40.7%), had paraplegia (8 people, 29.6%), and had hypoesthesia (11 people, 40.7%). TLR-4 levels had a mean value of 8254.1±1076.1 ng/ml. TLR-4 levels were positively correlated with the degree of vertebral destruction (r=0.599, P=0.001), motor disorders (r=0.632.x, P=0.000), and sensory disorders (r=0.574, P=0.002). Conclusion TLR-4 levels are associated with the severity of vertebral destruction in TB spondylitis, so it has the potential to be used as a prognostic biomarker.
Collapse
Affiliation(s)
- Jainal Arifin
- Department of Orthopedic and Traumatology, Spine Divison
| | - Muhammad Sakti
- Department of Orthopedic and Traumatology, Sports and Injury Division
| | | | | | | | - Putu A.N. Winangun
- Orthopaedic and Traumatology Study Program, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| |
Collapse
|
2
|
Naidoo L, Arumugam T, Ramsuran V. Host Genetic Impact on Infectious Diseases among Different Ethnic Groups. ADVANCED GENETICS (HOBOKEN, N.J.) 2023; 4:2300181. [PMID: 38099246 PMCID: PMC10716055 DOI: 10.1002/ggn2.202300181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/11/2023] [Indexed: 12/17/2023]
Abstract
Infectious diseases such as malaria, tuberculosis (TB), human immunodeficiency virus (HIV), and the coronavirus disease of 2019 (COVID-19) are problematic globally, with high prevalence particularly in Africa, attributing to most of the death rates. There have been immense efforts toward developing effective preventative and therapeutic strategies for these pathogens globally, however, some remain uncured. Disease susceptibility and progression for malaria, TB, HIV, and COVID-19 vary among individuals and are attributed to precautionary measures, environment, host, and pathogen genetics. While studying individuals with similar attributes, it is suggested that host genetics contributes to most of an individual's susceptibility to disease. Several host genes are identified to associate with these pathogens. Interestingly, many of these genes and polymorphisms are common across diseases. This paper analyzes genes and genetic variations within host genes associated with HIV, TB, malaria, and COVID-19 among different ethnic groups. The differences in host-pathogen interaction among these groups, particularly of Caucasian and African descent, and which gene polymorphisms are prevalent in an African population that possesses protection or risk to disease are reviewed. The information in this review could potentially help develop personalized treatment that could effectively combat the high disease burden in Africa.
Collapse
Affiliation(s)
- Lisa Naidoo
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
| | - Thilona Arumugam
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
| | - Veron Ramsuran
- School of Laboratory Medicine and Medical SciencesCollege of Health SciencesUniversity of KwaZulu‐NatalDurban4041South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA)University of KwaZulu‐NatalDurban4041South Africa
| |
Collapse
|
3
|
Ponnusamy N, Arumugam M. Interaction of Host Pattern Recognition Receptors (PRRs) with Mycobacterium Tuberculosis and Ayurvedic Management of Tuberculosis: A Systemic Approach. Infect Disord Drug Targets 2022; 22:e130921196420. [PMID: 34517809 DOI: 10.2174/1871526521666210913110834] [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: 11/20/2020] [Revised: 04/15/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
Tuberculosis (TB), an infectious disease caused by Mycobacterium tuberculosis (Mtb), infects the lungs' alveolar surfaces through aerosol droplets. At this stage, the disease progression may have many consequences, determined primarily by the reactions of the human immune system. However, one approach will be to more actively integrate the immune system, especially the pattern recognition receptor (PRR) systems of the host, which notices pathogen-associated molecular patterns (PAMPs) of Mtb. Several types of PRRs are involved in the detection of Mtb, including Toll-like receptors (TLRs), C-type lectin receptors (CLRs), Dendritic cell (DC) -specific intercellular adhesion molecule-3-grabbing non-integrin (DC-SIGN), Mannose receptor (MR), and NOD-like receptors (NLRs) related to inflammasome activation. In this study, we focus on reviewing the Mtb pathophysiology and interaction of host PPRs with Mtb as well as adverse drug effects of anti-tuberculosis drugs (ATDs) and systematic TB treatment via Ayurvedic medicine.
Collapse
Affiliation(s)
- Nirmaladevi Ponnusamy
- Department of Biotechnology, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Mohanapriya Arumugam
- Department of Biotechnology, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| |
Collapse
|
4
|
Alemnew B, Hoff ST, Abebe T, Abebe M, Aseffa A, Howe R, Wassie L. Ex vivo mRNA expression of toll-like receptors during latent tuberculosis infection. BMC Immunol 2021; 22:9. [PMID: 33509080 PMCID: PMC7842038 DOI: 10.1186/s12865-021-00400-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/14/2021] [Indexed: 12/24/2022] Open
Abstract
Background Understanding immune mechanisms, particularly the role of innate immune markers during latent TB infection remains elusive. The main objective of this study was to evaluate mRNA gene expression patterns of toll-like receptors (TLRs) as correlates of immunity during latent TB infection and further infer their roles as potential diagnostic biomarkers. Methods Messenger RNA (mRNA) levels were analysed in a total of 64 samples collected from apparently healthy children and adolescents latently infected with tuberculosis (n = 32) or non-infected (n = 32). Relative expression in peripheral blood of selected genes encoding TLRs (TLR-1, TLR-2, TLR-4, TLR-6 and TLR-9) was determined with a quantitative real-time polymerase chain reaction (qRT-PCR) using specific primers and florescent labelled probes and a comparative threshold cycle method to define fold change. Data were analysed using Graph-Pad Prism 7.01 for Windows and a p-value less than 0.05 was considered statistically significant. Results An increased mean fold change in the relative expression of TLR-2 and TLR-6 mRNA was observed in LTBI groups relative to non-LTBI groups (p < 0.05), whereas a slight fold decrease was observed for TLR-1 gene. Conclusions An increased mRNA expression of TLR-2 and TLR-6 was observed in latently infected individuals relative to those non-infected, possibly indicating the roles these biomarkers play in sustenance of the steady state interaction between the dormant TB bacilli and host immunity. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00400-4.
Collapse
Affiliation(s)
- Birhan Alemnew
- College of Health Sciences, Department of Medical Laboratory Sciences, Woldia University, Woldia, Ethiopia.,Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | | | - Tamrat Abebe
- Department of Microbiology, Immunology and Parasitology, College of Health Sciences, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Markos Abebe
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Abraham Aseffa
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Rawleigh Howe
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Liya Wassie
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia.
| |
Collapse
|
5
|
Fighting Persistence: How Chronic Infections with Mycobacterium tuberculosis Evade T Cell-Mediated Clearance and New Strategies To Defeat Them. Infect Immun 2020; 88:IAI.00916-19. [PMID: 32094248 DOI: 10.1128/iai.00916-19] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Chronic bacterial infections are caused by pathogens that persist within their hosts and avoid clearance by the immune system. Treatment and/or detection of such pathogens is difficult, and the resulting pathologies are often deleterious or fatal. There is an urgent need to develop protective vaccines and host-directed therapies that synergize with antibiotics to prevent pathogen persistence and infection-associated pathologies. However, many persistent pathogens, such as Mycobacterium tuberculosis, actively target the very host pathways activated by vaccination. These immune evasion tactics blunt the effectiveness of immunization strategies and are impeding progress to control these infections throughout the world. Therefore, it is essential that M. tuberculosis immune evasion-related pathogen virulence strategies are considered to maximize the effectiveness of potential new treatments. In this review, we focus on how Mycobacterium tuberculosis infects antigen-presenting cells and evades effective immune clearance by the adaptive response through (i) manipulating antigen presentation, (ii) repressing T cell-activating costimulatory molecules, and (iii) inducing ligands that drive T cell exhaustion. In this context, we will examine the challenges that bacterial virulence strategies pose to developing new vaccines. We will then discuss new approaches that will help dissect M. tuberculosis immune evasion mechanisms and devise strategies to bypass them to promote long-term protection and prevent disease progression.
Collapse
|
6
|
Huang Z, Liu J, Li L, Guo Y, Luo Q, Li J. Long non-coding RNA expression profiling of macrophage line RAW264.7 infected by Mycobacterium tuberculosis. Biotech Histochem 2020; 95:403-410. [PMID: 32077318 DOI: 10.1080/10520295.2019.1707874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been implicated in regulation of biological processes. The role of lncRNAs in macrophages in response to Mycobacterium tuberculosis infection has not been explored. We used high throughput lncRNA microarray analysis to detect differentially expressed lncRNAs and mRNAs in RAW264.7 macrophages with or without M. tuberculosis infection. Quantitative real-time PCR (qRT-PCR) was used to verify the microarray results. Bioinformatics analysis (GO and KEGG) were used to explore the function of significantly dysregulated genes. Microarray results indicated that 1,487 lncRNAs (791 up and 696 down) and 910 mRNAs (536 up and 374 down) were expressed differentially in RAW264.7 macrophages with M. tuberculosis infection compared to controls. GO and pathway analysis revealed that up-regulated mRNAs were involved in immune response, immune system process, system development or TNF signaling pathway, and antigen processing and presentation. To the contrary, down-regulated mRNAs participated in system development, regulation of biological processes and peroxisome proliferator-activated receptor (PPAR) signaling pathway. qRT-PCR results of 10 lncRNAs and mRNAs were consistent with the microarray data. M. tuberculosis infection of macrophages caused enhanced expression of lncRNA AK151345 in a time- and dose-dependent manner. We determined comprehensive expression profiles of differentially expressed lncRNAs in RAW264.7 macrophages infected by M. tuberculosis.
Collapse
Affiliation(s)
- Zikun Huang
- Department of Clinical Laboratory, the First Affiliated Hospital of Nanchang University , Nanchang 330006, China
| | - Jianing Liu
- 2014 grade of Queen Mary Department of Medical College of Nanchang University , Nanchang 330006, China
| | - Lu Li
- 2014 grade of Queen Mary Department of Medical College of Nanchang University , Nanchang 330006, China
| | - Yang Guo
- Department of Clinical Laboratory, the First Affiliated Hospital of Nanchang University , Nanchang 330006, China
| | - Qing Luo
- Department of Clinical Laboratory, the First Affiliated Hospital of Nanchang University , Nanchang 330006, China
| | - Junming Li
- Department of Clinical Laboratory, the First Affiliated Hospital of Nanchang University , Nanchang 330006, China
| |
Collapse
|
7
|
Li Z, Mao X, Liu Q, Song H, He B, Shi P, Zhang Q, Li X, Wang J. Functional variations of the TLR4 gene in association with chronic obstructive pulmonary disease and pulmonary tuberculosis. BMC Pulm Med 2019; 19:184. [PMID: 31640653 PMCID: PMC6805358 DOI: 10.1186/s12890-019-0939-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 09/16/2019] [Indexed: 02/07/2023] Open
Abstract
Objective Chronic obstructive pulmonary disease (COPD) and pulmonary tuberculosis (PTB) share a number of common risk factors, including innate immunity-related genetic factors. In the present study, we compared the role of genetic variations of the TLR4 gene in susceptibility to COPD and PTB and illuminated the underlying molecular mechanism of functional single-nucleotide polymorphisms (SNPs). Methods A population-based case control study was performed in a Chinese Han population and included 152 COPD cases, 1601 PTB cases and 1727 controls. Five SNPs in the TLR4 gene (rs10759932, rs2737190, rs7873784, rs11536889, and rs10983755) were genotyped using TaqMan allelic discrimination technology. We estimated the effects of SNPs using the odds ratio (OR) together with 95% confidence interval (CI). Dual-luciferase reporter vectors expressing different genotypes of SNPs were constructed and transfected into the human HEK 293 T cell line to explore their effects on potential transcription activity. Results After Bonferroni correction, the genetic polymorphisms of all five SNPs remained significantly associated with COPD, while rs10759932 and rs2737190 were also associated with PTB. Compared with rs10759932-TT, individuals carrying TC (OR: 0.42, 95% CI: 0.28–0.64) or CC (OR: 0.24, 95% CI: 0.09–0.63) had a significantly reduced risk of COPD. However, individuals carrying TC (OR: 1.28, 95% CI: 1.11–1.49) or CC (OR: 1.26, 95% CI: 0.98–1.62) had an increased risk of PTB. The OR (95% CI) for allele rs10759932-C was 0.45 (0.32–0.62) for COPD and 1.18 (1.07–1.32) for PTB. For rs2737190, heterozygous AG was related to a decreased risk of COPD (OR: 0.32, 95% CI: 0.21–0.49) and an increased risk of PTB (OR: 1.30, 95% CI: 1.11–1.52). The dual-luciferase reporter assay showed decreased transcription activity caused by rs10759932-C and rs2737190-G. Conclusion Genetic polymorphisms of rs10759932 and rs2737190 in TLR4 are significantly related to both COPD and PTB but with inverse effects. The altered transcription activity caused by mutations in these two loci may partly explain the observed relationship.
Collapse
Affiliation(s)
- Zhongqi Li
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Xuhua Mao
- Department of Clinical Laboratory, Yixing People's Hospital, Wuxi, 214200, People's Republic of China
| | - Qiao Liu
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Huan Song
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Biyu He
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Peiyi Shi
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Qun Zhang
- Health Management Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, People's Republic of China.
| | - Xiaona Li
- Health Management Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, People's Republic of China
| | - Jianming Wang
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China. .,Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, 211166, Nanjing, People's Republic of China.
| |
Collapse
|
8
|
Kabuye D, Chu Y, Lao W, Jin G, Kang H. Association between CLEC4E gene polymorphism of mincle and pulmonary tuberculosis infection in a northern Chinese population. Gene 2019; 710:24-29. [PMID: 31075410 DOI: 10.1016/j.gene.2019.05.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 04/24/2019] [Accepted: 05/06/2019] [Indexed: 01/16/2023]
Abstract
BACKGROUND Pulmonary tuberculosis caused by an intracellular pathogen, Mycobacterium tuberculosis continues to exist as a hazardous disease to human life globally. Genetic polymorphisms regulate resistance and susceptibility to tuberculosis. The C-type lectin receptor of family 4 member E (CLEC4E) confers protection against tuberculosis in laboratory animals but its function in influencing exposure or resistance to pulmonary tuberculosis (PTB) in humans remains obscure. AIM We conducted this research to analyze the effects or concomitance of CLEC4E gene variations with susceptibility to pulmonary tuberculosis in a northern Chinese population. METHOD In this study, 202 participants with pulmonary tuberculosis and 214 controls without PTB were enrolled. Two single nucleotide polymorphisms (SNPs) for CLEC4E on chromosome 12 were selected with a minor allele frequency of >0.05. All the SNPs were genotyped using high resolution melting analysis-PCR. RESULTS We estimated and compared two SNPs, rs10841845 and rs10841847. From our study findings, CLEC4E rs10841845 conferred protection against the development of pulmonary TB with a P value of <0.05 and odds ratio of <1 for all models of genetic inheritance. CLEC4E rs10841847 genotypes in co-dominant, Recessive, Dominant models and alleles had a significant statistical difference between patients and controls associated with resistance against the development of PTB (P<0.05 and OR<1). CONCLUSION Our findings suggest that variations at rs10841845 and rs10841847 of CLEC4E genes are associated with increased individual protection against PTB.
Collapse
Affiliation(s)
- Deo Kabuye
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Yang Chu
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Wenting Lao
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Guojiang Jin
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Hui Kang
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China.
| |
Collapse
|
9
|
Wang X, Yin S, Li Y, Wang W, Du M, Guo W, Xue M, Wu J, Liang D, Wang R, Liu D, Chu D. Spatiotemporal epidemiology of, and factors associated with, the tuberculosis prevalence in northern China, 2010-2014. BMC Infect Dis 2019; 19:365. [PMID: 31039734 PMCID: PMC6492399 DOI: 10.1186/s12879-019-3910-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/17/2019] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Tuberculosis (TB) is an important public health issue worldwide. However, evidence concerning the impact of environmental factors on TB is sparse. We performed a retrospective analysis to determine the spatiotemporal trends and geographic variations of, and the factors associated with, the TB prevalence in Inner Mongolia. METHODS We performed a retrospective analysis of the epidemiology of TB. A Bayesian spatiotemporal model was used to investigate the spatiotemporal distribution and trends of the TB prevalence. A spatial panel data model was used to identify factors associated with the TB prevalence in the 101 counties of Inner Mongolia, using county-level aggregated data collected by the Inner Mongolia Center for Disease Control and Prevention. RESULTS From January 2010 to December 2014, 79,466 (6.36‱) incident TB cases were recorded. The TB prevalence ranged from 4.97‱ (12,515/25,167,547) in 2014 to 7.49‱ (18,406/ 24,578,678) in 2010; the majority of TB cases were in males, and in those aged 46-60 years; by occupation, farmers and herdsmen were the most frequently affected. The Bayesian spatiotemporal model showed that the overall TB prevalence decreased linearly from 2010 to 2014 and occupation-stratified analyses yielded similar results, corroborating the reliability of the findings. The decrease of TB prevalence in the central-western and eastern regions was more rapid than that in the overall TB prevalence. A spatial correlation analysis showed spatial clustering of the TB prevalence from 2011 to 2014 (Moran's index > 0, P < 0.05); in the spatial panel data model, rural residence, birth rate, number of beds, population density, precipitation, air pressure, and sunshine duration were associated with the TB prevalence. CONCLUSIONS The overall TB prevalence in Inner Mongolia decreased from 2010 to 2014; however, the incidence of TB was high throughout this period. The TB prevalence was influenced by a spatiotemporal interaction effect and was associated with epidemiological, healthcare, and environmental factors.
Collapse
Affiliation(s)
- Xuemei Wang
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
- School of Public Health, Peking University, Beijing, 100191 China
| | - Shaohua Yin
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
- School of Public Health, Peking University, Beijing, 100191 China
| | - Yunpeng Li
- Inner Mongolia Ecology and Agrometeorology Center, Hohhot, 010110 China
| | - Wenrui Wang
- Inner Mongolia Center for Disease Control and Prevention, Hohhot, 010031 China
| | - Maolin Du
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
| | - Weidong Guo
- Inner Mongolia Center for Disease Control and Prevention, Hohhot, 010031 China
| | - Mingming Xue
- School of Basic Medicine, Inner Mongolia Medical University, Hohhot, 010110 China
| | - Jing Wu
- National Center for Chronic and Non-Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 100050 China
| | - Danyan Liang
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
| | - Ruiqi Wang
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
| | - Dan Liu
- School of Public Health, Inner Mongolia Medical University, Hohhot, 010110 China
| | - Di Chu
- Inner Mongolia Center for Disease Control and Prevention, Hohhot, 010031 China
| |
Collapse
|
10
|
Magallanes-Puebla A, Espinosa-Cueto P, López-Marín LM, Mancilla R. Mycobacterial glycolipid Di-O-acyl trehalose promotes a tolerogenic profile in dendritic cells. PLoS One 2018; 13:e0207202. [PMID: 30532264 PMCID: PMC6287779 DOI: 10.1371/journal.pone.0207202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/26/2018] [Indexed: 12/29/2022] Open
Abstract
Due to prolonged coevolution with the human being, Mycobacterium tuberculosis has acquired a sophisticated capacity to evade host immunity and persist in a latent state in the infected individual. As part of this evolutive process, mycobacteria have developed a highly complex cell wall that acts as a protective barrier. Herein we studied the effects of Di-O-acyl trehalose, a cell-wall glycolipid of virulent mycobacteria on murine bone marrow-derived dendritic cells. We have demonstrated that Di-O-Acyl-trehalose promotes a tolerogenic phenotype in bone marrow-derived murine DCs activated with mycobacterial antigens and Toll-like receptor agonists. This phenotype included low expression of antigen presentation and costimulatory molecules and altered cytokine production with downregulation of IL-12 and upregulation of IL-10, an anti-inflammatory cytokine. Additional markers of tolerogenicity were the expression of Indoleamine 2,3-dioxygenase and CD25. Furthermore, Di-O-Acyl-Trehalose promoted the expansion of FoxP3+ regulatory T lymphocytes. A better understanding of mycobacterial cell-wall components involved in the evasion of immunity is a prerequisite to designing better strategies to fight tuberculosis.
Collapse
Affiliation(s)
- Alejandro Magallanes-Puebla
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Patricia Espinosa-Cueto
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
| | - Luz M. López-Marín
- Departamento de Ingeniería Molecular de Materiales¸ Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, México
| | - Raul Mancilla
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
- * E-mail:
| |
Collapse
|
11
|
Significance of CCL2 (−2518A/G), CCR2 (190G/A) and TLR4 polymorphisms (896 A/G and 1196C/T) in tuberculosis risk in Indian population. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
|