Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung
Summary: Neutrophils play a critical role in the eradication of Pseudomonas aeruginosa, a major pathogen causing lung infection. However, the mechanisms used by the pathogen to evade neutrophil-mediated killing remain poorly understood. Using a high-density transposon screen, we find that P. aerugin...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-08-01
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| Series: | Cell Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211124723009841 |
| _version_ | 1797731096413077504 |
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| author | Yoshinari Nakatsuka Masanori Matsumoto Naohiro Inohara Gabriel Núñez |
| author_facet | Yoshinari Nakatsuka Masanori Matsumoto Naohiro Inohara Gabriel Núñez |
| author_sort | Yoshinari Nakatsuka |
| collection | DOAJ |
| description | Summary: Neutrophils play a critical role in the eradication of Pseudomonas aeruginosa, a major pathogen causing lung infection. However, the mechanisms used by the pathogen to evade neutrophil-mediated killing remain poorly understood. Using a high-density transposon screen, we find that P. aeruginosa colonization in the lung is promoted by pathogen nitrite reductase nirD. nirD is required for ammonia production from nitrite, a metabolite derived from nitrogen oxide (NO) generated by inducible NO synthetase (iNOS) in phagocytes. P. aeruginosa deficient in nirD exhibit reduced survival in wild-type neutrophils but not in iNOS-deficient neutrophils. Mechanistically, nirD enhances P. aeruginosa survival in neutrophils by inhibiting the localization of the pathogen in late phagosomes. P. aeruginosa deficient in nirD show impaired lung colonization after infection in wild-type mice but not in mice with selective iNos deficiency in neutrophils. Thus, P. aeruginosa uses neutrophil iNOS-mediated NO production to limit neutrophil pathogen killing and to promote its colonization in the lung. |
| first_indexed | 2024-03-12T11:53:48Z |
| format | Article |
| id | doaj.art-82866412688d41b6a9f478a23ed6f4ad |
| institution | Directory Open Access Journal |
| issn | 2211-1247 |
| language | English |
| last_indexed | 2024-03-12T11:53:48Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cell Reports |
| spelling | doaj.art-82866412688d41b6a9f478a23ed6f4ad2023-08-31T05:02:23ZengElsevierCell Reports2211-12472023-08-01428112973Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lungYoshinari Nakatsuka0Masanori Matsumoto1Naohiro Inohara2Gabriel Núñez3Department of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48019, USA; Corresponding authorDepartment of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48019, USADepartment of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48019, USADepartment of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48019, USA; Corresponding authorSummary: Neutrophils play a critical role in the eradication of Pseudomonas aeruginosa, a major pathogen causing lung infection. However, the mechanisms used by the pathogen to evade neutrophil-mediated killing remain poorly understood. Using a high-density transposon screen, we find that P. aeruginosa colonization in the lung is promoted by pathogen nitrite reductase nirD. nirD is required for ammonia production from nitrite, a metabolite derived from nitrogen oxide (NO) generated by inducible NO synthetase (iNOS) in phagocytes. P. aeruginosa deficient in nirD exhibit reduced survival in wild-type neutrophils but not in iNOS-deficient neutrophils. Mechanistically, nirD enhances P. aeruginosa survival in neutrophils by inhibiting the localization of the pathogen in late phagosomes. P. aeruginosa deficient in nirD show impaired lung colonization after infection in wild-type mice but not in mice with selective iNos deficiency in neutrophils. Thus, P. aeruginosa uses neutrophil iNOS-mediated NO production to limit neutrophil pathogen killing and to promote its colonization in the lung.http://www.sciencedirect.com/science/article/pii/S2211124723009841CP: MicrobiologyCP: Immunology |
| spellingShingle | Yoshinari Nakatsuka Masanori Matsumoto Naohiro Inohara Gabriel Núñez Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung Cell Reports CP: Microbiology CP: Immunology |
| title | Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| title_full | Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| title_fullStr | Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| title_full_unstemmed | Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| title_short | Pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| title_sort | pseudomonas aeruginosa hijacks the murine nitric oxide metabolic pathway to evade killing by neutrophils in the lung |
| topic | CP: Microbiology CP: Immunology |
| url | http://www.sciencedirect.com/science/article/pii/S2211124723009841 |
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