Mycobacterium tuberculosis Infection and Innate Responses in a New Model of Lung Alveolar Macrophages
dc.contributor.author | Woo, M | |
dc.contributor.author | Wood, C | |
dc.contributor.author | Kwon, D | |
dc.contributor.author | Park, K-HP | |
dc.contributor.author | Fejer, Gyorgy | |
dc.contributor.author | Delorme, V | |
dc.date.accessioned | 2018-03-26T13:24:52Z | |
dc.date.available | 2018-03-26T13:24:52Z | |
dc.date.issued | 2018-03-12 | |
dc.identifier.issn | 1664-3224 | |
dc.identifier.issn | 1664-3224 | |
dc.identifier.other | ARTN 438 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/11172 | |
dc.description.abstract |
Lung alveolar macrophages (AMs) are in the first line of immune defense against respiratory pathogens and play key roles in the pathogenesis of Mycobacterium tuberculosis (Mtb) in humans. Nevertheless, AMs are available only in limited amounts for in vitro studies, which hamper the detailed molecular understanding of host-Mtb interactions in these macrophages. The recent establishment of the self-renewing and primary Max Planck Institute (MPI) cells, functionally very close to lung AMs, opens unique opportunities for in vitro studies of host-pathogen interactions in respiratory diseases. Here, we investigated the suitability of MPI cells as a host cell system for Mtb infection. Bacterial, cellular, and innate immune features of MPI cells infected with Mtb were characterized. Live bacteria were readily internalized and efficiently replicated in MPI cells, similarly to primary murine macrophages and other cell lines. MPI cells were also suitable for the determination of anti-tuberculosis (TB) drug activity. The primary innate immune response of MPI cells to live Mtb showed significantly higher and earlier induction of the pro-inflammatory cytokines TNFα, interleukin 6 (IL-6), IL-1α, and IL-1β, as compared to stimulation with heat-killed (HK) bacteria. MPI cells previously showed a lack of induction of the anti-inflammatory cytokine IL-10 to a wide range of stimuli, including HK Mtb. By contrast, we show here that live Mtb is able to induce significant amounts of IL-10 in MPI cells. Autophagy experiments using light chain 3B immunostaining, as well as LysoTracker labeling of acidic vacuoles, demonstrated that MPI cells efficiently control killed Mtb by elimination through phagolysosomes. MPI cells were also able to accumulate lipid droplets in their cytoplasm following exposure to lipoproteins. Collectively, this study establishes the MPI cells as a relevant, versatile host cell model for TB research, allowing a deeper understanding of AMs functions in this pathology. | |
dc.format.extent | 438- | |
dc.format.medium | Electronic-eCollection | |
dc.language | eng | |
dc.language.iso | eng | |
dc.publisher | Frontiers Media SA | |
dc.subject | Max Planck Institute cells | |
dc.subject | alveolar macrophages | |
dc.subject | Mycobacterium tuberculosis | |
dc.subject | innate response | |
dc.subject | cytokine secretion | |
dc.subject | autophagy | |
dc.subject | foamy macrophage | |
dc.title | Mycobacterium tuberculosis Infection and Innate Responses in a New Model of Lung Alveolar Macrophages | |
dc.type | journal-article | |
dc.type | Journal Article | |
dc.type | Research Support, Non-U.S. Gov't | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000427175700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.issue | MAR | |
plymouth.volume | 9 | |
plymouth.publication-status | Published online | |
plymouth.journal | Frontiers in Immunology | |
dc.identifier.doi | 10.3389/fimmu.2018.00438 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Health | |
plymouth.organisational-group | /Plymouth/Faculty of Health/School of Biomedical Sciences | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA01 Clinical Medicine | |
plymouth.organisational-group | /Plymouth/Research Groups | |
plymouth.organisational-group | /Plymouth/Research Groups/Institute of Translational and Stratified Medicine (ITSMED) | |
plymouth.organisational-group | /Plymouth/Research Groups/Institute of Translational and Stratified Medicine (ITSMED)/CBR | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
plymouth.organisational-group | /Plymouth/Users by role/Researchers in ResearchFish submission | |
dc.publisher.place | Switzerland | |
dcterms.dateAccepted | 2018-02-19 | |
dc.identifier.eissn | 1664-3224 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.3389/fimmu.2018.00438 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2018 | |
rioxxterms.type | Journal Article/Review |