Mycobacterium tuberculosis replicates within necrotic human macrophages.

ABSTRACT: Mycobacterium tuberculosis modulation of macrophage cell death is a well-documented phenomenon, but its role during bacterial replication is less characterized. In this study, we investigate the impact of plasma membrane (PM) integrity on bacterial replication in different functional populations of human primary macrophages. We discovered that IFN-γ enhanced bacterial replication in macrophage colony-stimulating factor-differentiated macrophages more than in granulocyte-macrophage colony-stimulating factor-differentiated macrophages. We show that permissiveness in the different populations of macrophages to bacterial growth is the result of a differential ability to preserve PM integrity. By combining live-cell imaging, correlative light electron microscopy, and single-cell analysis

SUBMITTER: Lerner TR 

PROVIDER: S-EPMC5350509 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature