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Published on: February 16, 2020
miRNA in Diagnosis and Therapeutics of Tuberculosis: Importance in Latent and Brain Associated Pathologies
Parul Gupta1, Ravindra Kumar1, Rituraj Niranjan2
1Division of Genetics, ICMR-National Institute of Research in Tribal Health, Jabalpur, 482003, India.
Abstract:
MicroRNAs (miRNAs) are the regulators of gene expression and several cellular processes related to the immune system. miRNAs during tuberculosis (TB) infection are considered regulatory factors for the host immune system. Mycobacterium tuberculosis has a great ability to survive and multiply in phagocytic cells, which makes it difficult to treat. It can replicate through various cellular pathways. To establish the infection in the host cell, M. tuberculosis changes in the miRNA expression and increases survival capacity with high infectivity. miRNAs are widely used as biomarkers and therapeutic agents for tuberculosis. During M. tuberculosis infection, altered miRNA expressions can cause the progression of the disease and discriminate between latent and active TB infection. Due to their active involvement in disease progression, miRNAs may be utilized as potential biomarkers. Furthermore, the involvement of miRNA in autophagy and apoptosis modulation against M. tuberculosis highlights its potential for host-directed therapy. In this review article, we attempt to summarize the expression and role of various miRNAs in TB as immune modulators, differential activators between different phases of TB, including neuronal dysfunction in the brain, as therapeutic targets and diagnostic tools against TB.
Insights
MicroRNAs (miRNAs) regulate gene expression and immune responses in tuberculosis (TB). Understanding miRNA roles offers potential for diagnosing and treating this infectious disease.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are key regulators of gene expression and cellular processes, particularly within the immune system.
- Tuberculosis (TB) infection involves Mycobacterium tuberculosis evading host defenses by altering miRNA expression for survival and replication.
- Dysregulated miRNAs are implicated in TB pathogenesis, influencing disease progression and host immune response.
Purpose of the Study:
- To review the expression and multifaceted roles of miRNAs in tuberculosis (TB).
- To explore miRNAs as immune modulators, diagnostic biomarkers, and therapeutic targets in TB.
- To highlight miRNA involvement in host-directed therapies for TB.
Main Methods:
- Literature review of scientific articles on miRNAs and tuberculosis.
- Analysis of miRNA expression patterns in different TB infection phases.
- Examination of miRNA functions in immune modulation, autophagy, and apoptosis.
Main Results:
- Altered miRNA expression is crucial for Mycobacterium tuberculosis survival and infectivity within host cells.
- miRNAs can differentiate between latent and active TB infection, serving as potential diagnostic biomarkers.
- miRNA modulation of autophagy and apoptosis presents opportunities for host-directed therapeutic strategies.
Conclusions:
- miRNAs are critical regulators of the immune response to TB and can serve as biomarkers.
- Targeting miRNAs offers a promising avenue for novel diagnostic and therapeutic interventions against TB.
- Further research into miRNA functions can advance host-directed therapies for TB.
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