MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK

ABSTRACT Autophagy plays an important role in protecting the host against pathogens. Mycobacterium tuberculosis can suppress autophagy and then remain dormant and survive within the host for an extended period, which is responsible for latent tuberculosis infection (LTBI). Here, we explored the role...

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Autores principales:	Der-Yuan Chen, Yi-Ming Chen, Chin-Fu Lin, Che-Min Lo, Hung-Jen Liu, Tsai-Ling Liao
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2020
Materias:	autophagy biomarker latent tuberculosis infection (LTBI) microRNA-889 tumor necrosis factor-like weak inducer of apoptosis (TWEAK) Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/dbb1b02d37804f83aa6700dfa3748316
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spelling	oai:doaj.org-article:dbb1b02d37804f83aa6700dfa37483162021-11-15T15:56:57ZMicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK10.1128/mBio.03045-192150-7511https://doaj.org/article/dbb1b02d37804f83aa6700dfa37483162020-02-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mBio.03045-19https://doaj.org/toc/2150-7511ABSTRACT Autophagy plays an important role in protecting the host against pathogens. Mycobacterium tuberculosis can suppress autophagy and then remain dormant and survive within the host for an extended period, which is responsible for latent tuberculosis infection (LTBI). Here, we explored the role of microRNAs (miRNAs) in LTBI. The miRNA profiles were explored using the next-generation sequencing approach, followed by quantitative reverse transcription-PCR validation. The biological function of candidate miRNA was evaluated using immunoblotting, immunofluorescence techniques, and enzyme-linked immunosorbent assay in an in vitro human TB granuloma model. An increased miR-889 expression was observed in patients with LTBI compared with that in patients without infection. The reporter assay identified tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) as the target of miR-889. Mycobacterial infection induced TWEAK upregulation in the early phase. TWEAK induced autophagy and promoted mycobacterial autophagosome maturation through activation of AMP-activated protein kinase (AMPK). Upon entry to LTBI status, elevated miR-889 levels were associated with TNF alpha (TNF-α) and granuloma formation/maintenance. MiR-889 inhibited autophagy via posttranscriptional suppression of TWEAK expression to maintain mycobacterial survival in granulomas. Adalimumab (anti-TNF-α monoclonal antibody) treatment reduced levels of both TNF-α and miR-889 and caused granuloma destruction and LTBI reactivation. The circulating miR-889 and TWEAK levels were correlated with LTBI and subsequently associated with anti-TNF-α-related LTBI reactivation in patients. We propose that miR-889 and TWEAK can act as targets that can be manipulated for antimycobacterial therapeutic purposes and act as candidate biomarkers for LTBI and LTBI reactivation, respectively. IMPORTANCE TB remains a leading cause of morbidity and mortality worldwide. Approximately one-quarter of the world’s population has latent TB infection. TWEAK is a multiple-function cytokine and may be used as a target for the treatment of rheumatic diseases, cardiovascular diseases, and renal diseases. Here, we demonstrated a novel relationship between TWEAK and activation of the autophagic machinery which promotes antimycobacterial immunity. Additionally, TB infection is highly dynamic and determined by the interaction between the host and mycobacterium. We demonstrated a mechanism of fine-tuned balance between the mycobacterium and host for granuloma formation and/or maintenance in LTBI status. Once patients entered LTBI status, the upregulation of miR-889 was associated with TNF-α levels and granuloma formation to maintain mycobacterial survival. Adalimumab (a TNF-α inhibitor) reduced both TNF-α and miR-889 levels and caused LTBI reactivation and, thus, TWEAK enhancement. MiR-889 and TWEAK may become potential diagnostic biomarkers or therapeutic targets for LTBI and LTBI reactivation, respectively.Der-Yuan ChenYi-Ming ChenChin-Fu LinChe-Min LoHung-Jen LiuTsai-Ling LiaoAmerican Society for Microbiologyarticleautophagybiomarkerlatent tuberculosis infection (LTBI)microRNA-889tumor necrosis factor-like weak inducer of apoptosis (TWEAK)MicrobiologyQR1-502ENmBio, Vol 11, Iss 1 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	autophagy biomarker latent tuberculosis infection (LTBI) microRNA-889 tumor necrosis factor-like weak inducer of apoptosis (TWEAK) Microbiology QR1-502
spellingShingle	autophagy biomarker latent tuberculosis infection (LTBI) microRNA-889 tumor necrosis factor-like weak inducer of apoptosis (TWEAK) Microbiology QR1-502 Der-Yuan Chen Yi-Ming Chen Chin-Fu Lin Che-Min Lo Hung-Jen Liu Tsai-Ling Liao MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
description	ABSTRACT Autophagy plays an important role in protecting the host against pathogens. Mycobacterium tuberculosis can suppress autophagy and then remain dormant and survive within the host for an extended period, which is responsible for latent tuberculosis infection (LTBI). Here, we explored the role of microRNAs (miRNAs) in LTBI. The miRNA profiles were explored using the next-generation sequencing approach, followed by quantitative reverse transcription-PCR validation. The biological function of candidate miRNA was evaluated using immunoblotting, immunofluorescence techniques, and enzyme-linked immunosorbent assay in an in vitro human TB granuloma model. An increased miR-889 expression was observed in patients with LTBI compared with that in patients without infection. The reporter assay identified tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) as the target of miR-889. Mycobacterial infection induced TWEAK upregulation in the early phase. TWEAK induced autophagy and promoted mycobacterial autophagosome maturation through activation of AMP-activated protein kinase (AMPK). Upon entry to LTBI status, elevated miR-889 levels were associated with TNF alpha (TNF-α) and granuloma formation/maintenance. MiR-889 inhibited autophagy via posttranscriptional suppression of TWEAK expression to maintain mycobacterial survival in granulomas. Adalimumab (anti-TNF-α monoclonal antibody) treatment reduced levels of both TNF-α and miR-889 and caused granuloma destruction and LTBI reactivation. The circulating miR-889 and TWEAK levels were correlated with LTBI and subsequently associated with anti-TNF-α-related LTBI reactivation in patients. We propose that miR-889 and TWEAK can act as targets that can be manipulated for antimycobacterial therapeutic purposes and act as candidate biomarkers for LTBI and LTBI reactivation, respectively. IMPORTANCE TB remains a leading cause of morbidity and mortality worldwide. Approximately one-quarter of the world’s population has latent TB infection. TWEAK is a multiple-function cytokine and may be used as a target for the treatment of rheumatic diseases, cardiovascular diseases, and renal diseases. Here, we demonstrated a novel relationship between TWEAK and activation of the autophagic machinery which promotes antimycobacterial immunity. Additionally, TB infection is highly dynamic and determined by the interaction between the host and mycobacterium. We demonstrated a mechanism of fine-tuned balance between the mycobacterium and host for granuloma formation and/or maintenance in LTBI status. Once patients entered LTBI status, the upregulation of miR-889 was associated with TNF-α levels and granuloma formation to maintain mycobacterial survival. Adalimumab (a TNF-α inhibitor) reduced both TNF-α and miR-889 levels and caused LTBI reactivation and, thus, TWEAK enhancement. MiR-889 and TWEAK may become potential diagnostic biomarkers or therapeutic targets for LTBI and LTBI reactivation, respectively.
format	article
author	Der-Yuan Chen Yi-Ming Chen Chin-Fu Lin Che-Min Lo Hung-Jen Liu Tsai-Ling Liao
author_facet	Der-Yuan Chen Yi-Ming Chen Chin-Fu Lin Che-Min Lo Hung-Jen Liu Tsai-Ling Liao
author_sort	Der-Yuan Chen
title	MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
title_short	MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
title_full	MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
title_fullStr	MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
title_full_unstemmed	MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK
title_sort	microrna-889 inhibits autophagy to maintain mycobacterial survival in patients with latent tuberculosis infection by targeting tweak
publisher	American Society for Microbiology
publishDate	2020
url	https://doaj.org/article/dbb1b02d37804f83aa6700dfa3748316
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MicroRNA-889 Inhibits Autophagy To Maintain Mycobacterial Survival in Patients with Latent Tuberculosis Infection by Targeting TWEAK

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