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. 2022 Nov 14;13(11):955. doi: 10.1038/s41419-022-05409-0

Fig. 7. Graphical abstract.

Fig. 7

SIRT4 controls GDH enzyme activity, targeting glutamine metabolism in HSCs, inhibiting the activation and proliferation of HSCs, and ultimately alleviating liver fibrosis. Glutamine metabolic pathway: Glutamine is catalyzed by mitochondrial glutaminase (GLS) to produce glutamate and NH4+; Glutamate is converted into α-Ketoglutaric acid (α-KG) under the catalysis of GDH and enters the tricarboxylic acid (TCA) cycle, providing energy for the rapidproliferation of cells.