What is the mechanism of action of ensidipine?

Enasidenib is an oral targeted inhibitor mainly used to treat specific types of acute myeloid leukemia (AML). Its mechanism of action involves the inhibition of IDH2 (isocitrate dehydrogenase 2) mutant enzyme, thereby affecting the production of abnormal metabolites, restoring normal cell function, and ultimately inhibiting the development of AML.

The following is a detailed explanation of the mechanism of action of ensidipine:

1.IDH2Mutation and abnormal metabolism: In AML, some patients' AML cells will have IDH2 gene mutations. This mutation leads to the abnormal activity of IDH2 enzyme. Under normal circumstances, IDH2enzyme participates in the metabolic process of cells, converting isocitrate (α-ketoglutarate) into acetone and citric acid. But in IDH2mutatedAML, this enzyme catalyzes 2-hydroxyglutarate (2-HG) leads to a large accumulation of 2-HG in cells.

2.2-HGEffects:2-HG is an abnormal metabolite that can interfere with the normal metabolism and function of cells, especially the differentiation and proliferation processes of cells. In AML, excess 2-HG can inhibit cell differentiation and promote the proliferation of leukemia cells, thereby accelerating the development of AML.

3.The role of ensidipine: Ensidipine is a specific IDH2Mutated enzyme inhibitors. It reduces the production of 2-HG by binding to the IDH2 mutant enzyme and blocking its activity. In this way, ensidipine can reduce the accumulation of 2-HG in cells and restore the normal metabolism and function of cells.

4.Cell function recovery: Through ensidipine treatment, cell metabolism gradually returns to normal, and cell differentiation and proliferation can be regulated. This not only helps control the progression of AML, but may also promote the differentiation of leukemia cells into mature hematopoietic cells, further inhibiting the development of AML.

In general, ensidipine inhibits the development of AML by inhibiting the activity of IDH2 mutant enzyme, reducing the production of 2-HG and restoring the normal functions of cells. This targeted therapeutic mechanism makes it one of the effective drugs for treating specific types of AML and provides new treatment options for patients with AML.