Isocitrate Dehydrogenase 1 (IDH1)

Isocitrate dehydrogenase 1 (IDH1) EC:1.1.1.42 is one of three isocitrate dehydrogenase isoforms found in humans. Mutated IDH1 catalyzes α-KG to D-2-hydroxyglutarate (D2HG) and has been linked to tumorigenesis in certain types of cancers.

Products
Background
Literature
Gene Data

Inhibitors

Cat No Product Name / Activity
5244 TC-E 5008
Selective mutant isocitrate dehydrogenase 1 (mIDH1) inhibitor; phenotypically lethal

Other

Cat No Product Name / Activity
6124 (R)-2-Hydroxyglutaric acid disodium salt
Oncometabolite produced by mutant isocitrate dehydrogenase

Related Targets

    Isocitrate dehydrogenase 1 (IDH1) EC:1.1.1.42 is one of three isocitrate dehydrogenase isoforms found in humans. IDH1 and IDH2 are homodimeric enzymes found in the cytoplasm and mitochondria, respectively. In their wildtype form, they catalyze the conversion of isocitrate to α-ketoglutarate (α-KG), an essential intermediate in the Krebs cycle. IDH1 and IDH2 are structurally and functionally similar, but they differ substantially from IDH3 (an enzyme that plays a role in the Krebs cycle production of NADH).

    In hypoxic cancer cells, or in those with defects in the electron transport chain, HIF-1 mediates signaling that upregulates PDK1 and Myc. This in turn drives IDH1-mediated reductive metabolism of glutamine, a process that is integral to lipogenesis in cancer cells. Genome sequencing projects have identified that mutations in IDH1 are linked to glioblastomas and acute myeloid leukemias (AML), as well as other cancers. Mutant IDH1 converts α-KG to D-2-hydroxyglutarate (D2HG) resulting in high intracellular levels of D2HG, which have been postulated to act as an oncometabolite, driving tumorigenesis. D2HG competitively blocks α-KG binding at a family of enzymes called 2-OG-dependent dioxygenases, which are regulators of important epigenetic events. Mutant IDH enzymes are strongly associated with hypermethylation of CpG islands in AML and glioblastomas. Furthermore, mutations in IDH1 switch the enzyme's function from NADPH production to NADPH catabolism, thus reducing the prevalence of a critical redox mediator.

    Literature for Isocitrate Dehydrogenase 1 (IDH1)

    Cancer

    Cancer Research Product Guide

    A collection of over 750 products for cancer research, the guide includes research tools for the study of:

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    Epigenetics

    Epigenetics Scientific Review

    Written by Susanne Müller-Knapp and Peter J. Brown, this review gives an overview of the development of chemical probes for epigenetic targets, as well as the impact of these tool compounds being made available to the scientific community. In addition, their biological effects are also discussed. Epigenetic compounds available from Tocris are listed.

    Cancer Metabolism

    Cancer Metabolism Poster

    Adapted from the 2015 Cancer Product Guide, Edition 3, this poster summarizes the main targets for cancer metabolism researchers. Genetic changes and epigenetic modifications in cancer cells alter the regulation of cellular metabolic pathways. These distinct metabolic circuits could provide viable cancer therapeutic targets.

    Epigenetics in Cancer

    Epigenetics in Cancer Poster

    Adapted from the 2015 Cancer Product Guide Edition 3, this poster summarizes the main epigenetic targets in cancer. The dysregulation of epigenetic modifications has been shown to result in oncogenesis and cancer progression. Unlike genetic mutations, epigenetic alterations are considered to be reversible and thus make promising therapeutic targets.

    Isocitrate Dehydrogenase 1 (IDH1) Gene Data

    Gene Species Gene Symbol Gene Accession No. Protein Accession No.
    IDH1 Human IDH1 NM_005896 O75874
    Mouse Idh1 NM_001111320 O88844
    Rat Idh1 NM_031510 P41562