Skip to main content

Metabolic Stability Assessed by Liver Microsomes and Hepatocytes

  • Protocol
Optimization in Drug Discovery

Abstract

Metabolic stability is defined as the percentage of parent compound lost over time in the presence of a metabolically active test system. For metabolic stability assays, the typical test systems are liver microsomes, liver S9, or hepatocytes (plated or suspended), depending on the goal of the assay. To determine the metabolic stability of a new chemical entity, quantification of the drug candidate from incubate supernatants is required and usually accomplished by high-performance liquid chromatography (HPLC) with mass spectrometry. This analytical approach incorporates specificity, increased sensitivity, and higher throughput via decreased method development and analysis runtime. By understanding the metabolic stability of compounds early in discovery, compounds can be ranked for further studies, and the potential for a drug candidate to fail in development as a result of pharmacokinetic reasons may be reduced. This chapter details the procedures for performing a standard metabolic stability assay and the subsequent analysis of generated incubate samples.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Protocol
USD 49.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Li, A. (2001) Screening for human ADME/TOX drug properties in drug discovery. Drug Discov. Today 6, 357–366.

    Article  PubMed  CAS  Google Scholar 

  2. Seglen, P. O. (1976) Preparation of isolated rat liver cells. Methods Cell. Biol. 13, 29–83.

    Article  PubMed  CAS  Google Scholar 

  3. LeCluyse, E. L., Bullock, P. L., Parkinson, A., and Hochman, J. H. (1996) Cultured rat hepatocytes, in Models for Assessing Drug Absorption and Metabolism, (Borchardt, R. T., et al., eds.), Plenum, New York, pp. 121–159.

    Google Scholar 

  4. Li, A. P., Lu, C., Brent, J. A., Pham, C., Fackett, A., Ruegg, C. E., et al. (1999) Cyropreserved human hepatocytes: characterization of drug-metabolizing enzyme activities and applications in higher throughput screening assays for hepatotoxicity, metabolic stability and drug-drug interaction potential. Chem. Biol. Interact. 121, 17–35.

    Article  PubMed  CAS  Google Scholar 

  5. Easterbrook, J., Lu, C., Sakai, Y., and Li, A. P. (2001) Effects of organic solvents on the activities of cytochrome P450 isoforms, UDP-dependent glucuronyl transferase, and phenol sulfotransferase in human hepatocytes. Drug Metab. Dispos. 29, 141–144.

    PubMed  CAS  Google Scholar 

  6. Baker, T. R., Foltz, D. J., Bornes, D. M., Peng, S. X., Hu, J. K., and Grace, J. M. (1999) Multiple-compound HPLC/MS/MS assays to obtain high-throughput metabolic stability data. Paper presented at the 47th ASMS Conference on Mass Spectrometry and Allied Topics, June, Dallas, TX.

    Google Scholar 

  7. deBethizy, J. D. and Hayes, J. R. (2001) Metabolism: a determinant in toxicity, in Principles and Methods of Toxicology, 4th ed., (Hayes, A. W., ed.), Taylor & Francis, Philadelphia, pp. 77–136.

    Google Scholar 

  8. Hickman, D., Wang, J.-P., Wang, Y., and Unadkat, J. D. (1998) Evaluation of the selectivity of in-vitro probes and suitability of organic solvents for the measurements of human cytochrome P450 monooxygenase activities. Drug Metab. Disp. 26, 207–215.

    CAS  Google Scholar 

  9. Chauret, N., Gauthier, A., and Nicoll-Griffith, D. A. (1998) Effect of common organic solvents on in vitro cytochrome P450-mediated metabolic activities in human liver microsomes. Drug Metab. Disp. 26, 1–4.

    CAS  Google Scholar 

  10. Kariv, I., Rourick, R. A., Kassel, D. B., and Chung, T. D. (2002) Improvements of “hit-to-lead” optimization by integration of in vitro HTS experimental models for early determination of pharmacokinetic properties. Comb. Chem. High Throughput Screen 5, 459–472.

    PubMed  CAS  Google Scholar 

  11. Mandaagere, A. K., Thompson, T. N., and Hwang, K. K. (2002) Graphical model for estimating oral bioavailability of drugs in humans and other species from their Caco-2 permeability and in vitro liver enzyme metabolic stability rates. J. Med. Chem. 45, 304–311.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2004 Humana Press Inc., Totowa, NJ

About this protocol

Cite this protocol

Ackley, D.C., Rockich, K.T., Baker, T.R. (2004). Metabolic Stability Assessed by Liver Microsomes and Hepatocytes. In: Yan, Z., Caldwell, G.W. (eds) Optimization in Drug Discovery. Methods in Pharmacology and Toxicology. Humana Press. https://doi.org/10.1385/1-59259-800-5:151

Download citation

  • DOI: https://doi.org/10.1385/1-59259-800-5:151

  • Publisher Name: Humana Press

  • Print ISBN: 978-1-58829-332-9

  • Online ISBN: 978-1-59259-800-7

  • eBook Packages: Springer Protocols

Publish with us

Policies and ethics