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Characterization of a Linked Jumonji Domain of the KDM5/JARID1 Family of Histone H3 Lysine 4 Demethylases

Journal Article · · Journal of Biological Chemistry
The KDM5/JARID1 family of Fe(II)- and α-ketoglutarate-dependent demethylases remove methyl groups from tri- and dimethylated lysine 4 of histone H3. Accumulating evidence from primary tumors and model systems supports a role for KDM5A (JARID1A/RBP2) and KDM5B (JARID1B/PLU1) as oncogenic drivers. The KDM5 family is unique among the Jumonji domain-containing histone demethylases in that there is an atypical insertion of a DNA-binding ARID domain and a histone-binding PHD domain into the Jumonji domain, which separates the catalytic domain into two fragments (JmjN and JmjC). Here we demonstrate that internal deletion of the ARID and PHD1 domains has a negligible effect on in vitro enzymatic kinetics of the KDM5 family of enzymes. We present a crystal structure of the linked JmjN-JmjC domain from KDM5A, which reveals that the linked domain fully reconstitutes the cofactor (metal ion and α-ketoglutarate) binding characteristics of other structurally characterized Jumonji domain demethylases. Docking studies with GSK-J1, a selective inhibitor of the KDM6/KDM5 subfamilies, identify critical residues for binding of the inhibitor to the reconstituted KDM5 Jumonji domain. Further, we found that GSK-J1 inhibited the demethylase activity of KDM5C with 8.5-fold increased potency compared with that of KDM5B at 1 mm α-ketoglutarate. In contrast, JIB-04 (a pan-inhibitor of the Jumonji demethylase superfamily) had the opposite effect and was ~8-fold more potent against KDM5B than against KDM5C. Interestingly, the relative selectivity of JIB-04 toward KDM5B over KDM5C in vitro translates to a ~10–50-fold greater growth-inhibitory activity against breast cancer cell lines. Here, these data define the minimal requirements for enzymatic activity of the KDM5 family to be the linked JmjN-JmjC domain coupled with the immediate C-terminal helical zinc-binding domain and provide structural characterization of the linked JmjN-JmjC domain for the KDM5 family, which should prove useful in the design of KDM5 demethylase inhibitors with improved potency and selectivity.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
NCI; National Inst. of Health (NIH)
OSTI ID:
1237765
Journal Information:
Journal of Biological Chemistry, Journal Name: Journal of Biological Chemistry Journal Issue: 6 Vol. 291; ISSN 0021-9258
Publisher:
American Society for Biochemistry and Molecular BiologyCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

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Cited By (16)

KDM5 demethylases and their role in cancer cell chemoresistance: KDM5 demethylases journal November 2018
Epigenetics of Breast Cancer: Clinical Status of Epi-drugs and Phytochemicals book August 2019
Lysine-specific demethylase 1 cooperates with BRAF–histone deacetylase complex 80 to enhance HIV-1 Tat-mediated transactivation journal August 2018
Extended Recognition of the Histone H3 Tail by Histone Demethylase KDM5A journal January 2020
Structural analysis of human KDM5B guides histone demethylase inhibitor development journal May 2016
Histone H3 binding to the PHD1 domain of histone demethylase KDM5A enables active site remodeling journal January 2019
The transition structure of chromatin fibers at the nanoscale probed by cryogenic electron tomography journal January 2019
JARID1/KDM5 demethylases as cancer targets? journal November 2016
A CRISPR/Cas9 screen identifies the histone demethylase MINA53 as a novel HIV-1 latency-promoting gene (LPG) journal June 2019
Histone Lysine Demethylase Inhibitors journal October 2016
The H3K4 demethylase Jar1 orchestrates ROS production and expression of pathogenesis‐related genes to facilitate Botrytis cinerea virulence journal October 2019
Xue-fu-Zhu-Yu decoction protects rats against retinal ischemia by downregulation of HIF-1α and VEGF via inhibition of RBP2 and PKM2 journal July 2017
Assessing histone demethylase inhibitors in cells: lessons learned journal March 2017
Histone demethylase JARID1B/KDM5B promotes aggressiveness of non-small cell lung cancer and serves as a good prognostic predictor journal August 2018
Genetic heterogeneity within collective invasion packs drives leader and follower cell phenotypes journal September 2019
KDM5 histone demethylases repress immune response via suppression of STING journal August 2018

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