Martinostat

Martinostat
Clinical data
Drug classHistone deacetylase inhibitor
ATC code
  • None
Identifiers
  • (2E)-3-(4-{[(Adamantan-1-ylmethyl)(methyl)amino]methyl}phenyl)-N-hydroxyacrylamide
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC22H30N2O2
Molar mass354.494 g·mol−1
3D model (JSmol)
  • CN(CC1=CC=C(C=C1)/C=C/C(=O)NO)CC23CC4CC(C2)CC(C4)C3
  • InChI=1S/C22H30N2O2/c1-24(14-17-4-2-16(3-5-17)6-7-21(25)23-26)15-22-11-18-8-19(12-22)10-20(9-18)13-22/h2-7,18-20,26H,8-15H2,1H3,(H,23,25)/b7-6+
  • Key:WNIDBXBLQFPAJA-VOTSOKGWSA-N

Martinostat is a histone deacetylase (HDAC) inhibitor which is used in scientific research.

Martinostat activities
EnzymeIC50Tooltip Half-maximal inhibitory concentration (nM)
HDAC10.3
HDAC20.8–2.0
HDAC30.6
HDAC41,970
HDAC5352
HDAC64.1
HDAC7>20,000
HDAC8>15,000
HDAC9>15,000
HDAC10ND
HDAC11ND
Refs:

It is potent against recombinant class I HDACs (HDAC1, HDAC2, HDAC3) and class IIb HDAC (HDAC6) with low nanomolar affinities. In tissue CETSA assays, martinostat exhibits selectivity for class I HDACs.

Unlike many other HDAC inhibitors, like vorinostat and givinostat, which show poor brain penetrance and only subtle brain HDAC inhibition, martinostat is highly lipophilic due to its adamantyl group and shows robust brain uptake. When tagged with the radioisotope carbon-11, martinostat can be used to quantify HDAC in the brain and peripheral organs using positron emission tomography (PET) imaging.

Martinostat was first described in the scientific literature by 2014. It was given a name that adopted the style of other HDAC inhibitors, such as vorinostat, entinostat, and crebinostat, that recognized the academic center in which it was developed, the Martinos Center for Biomedical Imaging.

11C-labeled martinostat

See also

References

  1. 1 2 3 4 Schroeder FA, Wang C, Van de Bittner GC, Neelamegam R, Takakura WR, Karunakaran A, Wey HY, Reis SA, Gale J, Zhang YL, Holson EB, Haggarty SJ, Hooker JM (October 2014). "PET imaging demonstrates histone deacetylase target engagement and clarifies brain penetrance of known and novel small molecule inhibitors in rat". ACS Chem Neurosci. 5 (10): 1055–1062. doi:10.1021/cn500162j. PMC 4198064. PMID 25188794. Quantification of dynamic imaging data revealed that the hydroxamates SAHA and givinostat both resulted in only subtle blockade of radiotracer binding in whole brain (Figure 3A), consistent with recent reports demonstrating poor brain penetrance of the prototypical hydroxamic acid HDAC inhibitor, SAHA.14,15 Poor brain penetrance was overcome in the development of martinostat by the addition of an adamantyl group, a chemical moiety frequently used developing in CNS-penetrant compounds.10
  2. 1 2 3 4 5 Wang C, Schroeder FA, Wey HY, Borra R, Wagner FF, Reis S, et al. (October 2014). "In vivo imaging of histone deacetylases (HDACs) in the central nervous system and major peripheral organs". Journal of Medicinal Chemistry. 57 (19): 7999–8009. doi:10.1021/jm500872p. PMC 4191584. PMID 25203558.
  3. ↑ Jafari R, Almqvist H, Axelsson H, Ignatushchenko M, Lundbäck T, Nordlund P, Martinez Molina D (September 2014). "The cellular thermal shift assay for evaluating drug target interactions in cells". Nature Protocols. 9 (9): 2100–22. doi:10.1038/nprot.2014.138. PMID 25101824. S2CID 14939791.
  4. ↑ Wey HY, Gilbert TM, Zürcher NR, She A, Bhanot A, Taillon BD, et al. (August 2016). "Insights into neuroepigenetics through human histone deacetylase PET imaging". Science Translational Medicine. 8 (351): 351ra106. doi:10.1126/scitranslmed.aaf7551. PMC 5784409. PMID 27510902.