G9a promotes inflammation in Streptococcus pneumoniae induced pneumonia mice by stimulating M1 macrophage polarization and H3K9me2 methylation in FOXP1 promoter region.

ABSTRACT:

Background

Streptococcus pneumoniae has become a leading cause of pneumonia in recent years. Here, we investigated the mechanism of histone methylase G9a in Streptococcus pneumoniae-induced pneumonia (Spn).

Methods

G9a expression in Spn mouse tissue was measured. G9a lentivirus interference vector was injected into Spn mice to evaluate the wet and dry weight of the right upper lobe and the total lung water content (TLW) and wet/dry ratio (W/D). The number of neutrophils, macrophages, and lymphocytes in bronchoalveolar lavage fluid (BALF) was detected, and the levels of interleukin-1β (IL-1β), IL-6, tumor necrosis factor-α (TNF-α), and IL-10 in BALF were assessed. The expressions of M1 and M2 macrophage markers were also detected. The enrichment of histone 3 lys

SUBMITTER: Li Y 

PROVIDER: S-EPMC9201180 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature