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Meyoid-specific deficiency of Glutamine Synthetase Aggravates LPS/D-GalN-induced liver injury via the activation of monocyte-derived macrophages

ABSTRACT: Glutamine synthase (Glul) is a key enzyme to synthesize glutamine, but its function in acute liver injury (ALI) remains unclear. Here, we investigated the regulatory role of Glul on immnuity in LPS/D-GalN-induced ALI. The study firstly found that the expression of Glul in myeloid cells was inhibited following LPS/D-GalN challenge. Then myeloid-specific knockout Glul mice were generated, which showed more severe ALI and higher mortality due to the activation of monocyte-derived macrophages (MoMFs) and the secretion of CCL2, as well as the recruitment of CCR2+ monocytes. Notably, liver injury can be relieved with adeno-associated virus (AAV)-mediated hepatic delivery of Glul via tail vein injection in mice. In conclusion, this research validates the protective effect of Glul against ALI.

ORGANISM(S): Mus musculus

PROVIDER: GSE229818 | GEO | 2024/04/17

REPOSITORIES: GEO

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