What question did this study set out to answer?

To determine how Nramp1 expression influences Mycobacterium avium replication and the maturation and fusogenic properties of pathogen-containing phagosomes.

August 1, 2002Cellular MicrobiologyOpen Access

Effect of Nramp1 on bacterial replication and on maturation of Mycobacterium avium-containing phagosomes in bone marrow-derived mouse macrophages

View Full Paper

Ask AI

Bookmark

Authors

CFClaude FréhelInserm FCFrançois Canonne‐HergauxUniversité Toulouse III - Paul Sabatier PGPhilippe GrosThüringer Landesanstalt für Landwirtschaft

Discussion

Member takes

Implication

Experimental study demonstrates that Nramp1 restricts Mycobacterium avium replication by promoting phagosome maturation in mouse macrophages, indicating a vital role in host defense.

Key Points

To determine how Nramp1 expression influences Mycobacterium avium replication and the maturation and fusogenic properties of pathogen-containing phagosomes.
Infected bone marrow-derived macrophages from wild-type 129sv (Nramp1(G169)) and isogenic null mutant (Nramp1-/-) mice with a virulent strain of Mycobacterium avium.
Assessed bacterial viability and replication counts across wild-type and mutant macrophage cultures.
Evaluated phagosome maturation and fusion with early endosomes and lysosomes using electron microscopy and endocytic content markers.
Nramp1 expression exerted a clear bacteriostatic effect against M. avium, whereas targeted deletion of Nramp1 restored bacterial replication within macrophages.
M. avium failed to block phagosome maturation and lysosomal fusion in Nramp1-positive macrophages, while this inhibitory capacity was restored in Nramp1-deficient macrophages.

Cite This Study

Fréhel et al. (2002) studied this question.

synapsesocial.com/papers/6a8297b11d8eddfbf50f674e https://doi.org/10.1046/j.1462-5822.2002.00213.x

View Full Paper

Ask AI

Bookmark

Implication

Experimental study demonstrates that Nramp1 restricts Mycobacterium avium replication by promoting phagosome maturation in mouse macrophages, indicating a vital role in host defense.

Effect of Nramp1 on bacterial replication and on maturation of Mycobacterium avium-containing phagosomes in bone marrow-derived mouse macrophages

Discussion

Member takes

Implication

Key Points

Cite This Study

Effect of Nramp1 on bacterial replication and on maturation of Mycobacterium avium-containing phagosomes in bone marrow-derived mouse macrophages

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider