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A critical evaluation of in vitro cell culture models for high-throughput drug screening and toxicity.

Abstract：

:Drug candidate and toxicity screening processes currently rely on results from early-stage in vitro cell-based assays expected to faithfully represent essential aspects of in vivo pharmacology and toxicology. Several in vitro designs are optimized for high throughput to benefit screening efficiencies, allowing the entire libraries of potential pharmacologically relevant or possible toxin molecules to be screened for different types of cell signals relevant to tissue damage or to therapeutic goals. Creative approaches to multiplexed cell-based assay designs that select specific cell types, signaling pathways and reporters are routine. However, substantial percentages of new chemical and biological entities (NCEs/NBEs) that fail late-stage human drug testing, or receive regulatory "black box" warnings, or that are removed from the market for safety reasons after regulatory approvals all provide strong evidence that in vitro cell-based assays and subsequent preclinical in vivo studies do not yet provide sufficient pharmacological and toxicity data or reliable predictive capacity for understanding drug candidate performance in vivo. Without a reliable translational assay tool kit for pharmacology and toxicology, the drug development process is costly and inefficient in taking initial in vitro cell-based screens to in vivo testing and subsequent clinical approvals. Commonly employed methods of in vitro testing, including dissociated, organotypic, organ/explant, and 3-D cultures, are reviewed here with specific focus on retaining cell and molecular interactions and physiological parameters that determine cell phenotypes and their corresponding responses to bioactive agents. Distinct advantages and performance challenges for these models pertinent to cell-based assay and their predictive capabilities required for accurate correlations to in vivo mechanisms of drug toxicity are compared.

journal_name

Pharmacol Ther

journal_title

Pharmacology & therapeutics

authors

Astashkina A,Mann B,Grainger DW

doi

10.1016/j.pharmthera.2012.01.001

subject

Has Abstract

pub_date

2012-04-01 00:00:00

pages

82-106

issue

eissn

0163-7258

issn

1879-016X

pii

S0163-7258(12)00002-2

journal_volume

134

pub_type

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A critical evaluation of in vitro cell culture models for high-throughput drug screening and toxicity.