Cited by 95Histone Deacetylase Inhibitors ResearchPharmacogenetics and Drug MetabolismAnalytical Methods in Pharmaceuticals

PLASMA PHARMACOKINETICS AND METABOLISM OF THE HISTONE DEACETYLASE INHIBITOR TRICHOSTATIN A AFTER INTRAPERITONEAL ADMINISTRATION TO MICE

Sanderson, L., Taylor, G.W., Aboagye, E.O., Alao, J.P., Latigo, J.R., Coombes, R.C., Vigushin, D.M.·2004·Drug Metabolism and Disposition

Abstract

Trichostatin A is a potent and specific histone deacetylase inhibitor with promising antitumor activity in preclinical models. Plasma pharmacokinetics of trichostatin A were studied following single-dose intraperitoneal administration of 80 mg/kg (high dose) or 0.5 mg/kg (low dose) to female BALB/c mice. Plasma trichostatin A concentrations were quantified by high performance liquid chromatography (HPLC)-UV assay (high dose) or by HPLC-multiple reaction monitoring assay (low dose). Trichostatin A was rapidly absorbed from the peritoneum and detectable in plasma within 2 min. Cmax of 40 microg/ml and 8 ng/ml occurred within 5 min, followed by rapid exponential decay in plasma trichostatin A concentration with t1/2 of 6.3 min and 9.6 min (high and low doses, respectively). Phase I metabolites at the high dose were identified by simultaneous UV and positive ion electrospray mass spectrometry. Trichostatin A underwent extensive metabolism: primary metabolic pathways were N-demethylation, reduction of the hydroxamic acid to the corresponding trichostatin A amide, and oxidative deamination to trichostatic acid. N-Monomethyl trichostatin A amide was the major plasma metabolite. No didemethylated compounds were identified. Trichostatic acid underwent further biotransformation: reduction and beta-oxidation of the carboxylic acid, with or without N-demethylation, resulted in formation of dihydro trichostatic acid and dinor dihydro trichostatic acids. HPLC fractions corresponding to trichostatin A and N-demethylated trichostatin A exhibited histone deacetylase-inhibitory activity; no other fractions were biologically active. We conclude that trichostatin A is rapidly and extensively metabolized in vivo following intraperitoneal administration to mice, and N-demethylation does not compromise histone deacetylase-inhibitory activity.

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Crossref · 10.1124/dmd.104.000638

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Authors
Sanderson, L., Taylor, G. W., Aboagye, E. O., Alao, J. P., Latigo, J. R., Coombes, R. C., & Vigushin, D. M.
Affiliations
  • Hammersmith Hospital (GB)
  • Imperial College London (GB)
Venue
Drug Metabolism and Disposition
Publisher
Elsevier BV
Published
2004-10
Volume
32
Issue
10
Pages
1132-1138
ISSN
0090-9556 (ISSN-L)
OpenAlex
W2107542208
Cited by
90
References
28
Citations by year
2025: 3 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 13 · 2020: 6 · 2019: 8 · 2018: 3 · 2017: 1 · 2016: 4 · 2015: 4 · 2014: 3 · 2013: 6 · 2012: 5
FWCI
1.18
Type
journal article
Language
en
Open access
closed
Locations
  • Drug Metabolism and Disposition (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Physical Sciences › Chemistry › Analytical Chemistry › Analytical Methods in Pharmaceuticals
Keywords
trichostatin A, histone deacetylase inhibitors, plasma pharmacokinetics, drug metabolism, intraperitoneal administration, N-demethylation, oxidative deamination, fatty acid beta-oxidation, anticancer agents, BALB/c mice
MeSH terms
Animals, Chromatography, High Pressure Liquid, Enzyme Inhibitors, Female, Histone Deacetylases, Hydroxamic Acids, Injections, Intraperitoneal, Mice, Inbred BALB C, Rats, Wistar, Mice, Rats, Histone Deacetylase Inhibitors

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