Selection of cytotoxicity markers for the screening of new chemical entities in a pharmaceutical context: a preliminary study using a multiplexing approach

Toxicology in Vitro : an International Journal Published in Association with BIBRA
H H J GeretsF A Atienzar

Abstract

The present study was undertaken to validate a battery of cytotoxicity assays performed in a multiplex format to screen pharmaceutical compounds at an early stage of drug development. Two experiments were performed on HepG2 cells and the parameters were measured in 96-well plates. Biological and technical triplicates were performed to evaluate the reproducibility of the assay. In the first experiment, HepG2 cells were exposed to tamoxifen, staurosporine, phenobarbital and triton X-100 for 2 and 24h. The following nine cytotoxicity parameters were analyzed, cell viability, lactate dehydrogenase (LDH), adenosine triphosphate (ATP), caspase-3/7, aspartate aminotransferase (AST), glutamate dehydrogenase (GLDH), alanine aminotransferase (ALT), alkaline phosphatase (ALP) and alpha-glutathione-S-transferase (alpha-GST). In the second experiment, HepG2 cells were exposed to doxorubicin, t-butyl hydroperoxide, ferrous sulfate and sulfamoxole for 2 and 24h. Based on the results of the first experiment, six cytotoxicity parameters were selected for further evaluation (cell viability, ATP, LDH, caspase, AST and GLDH). ALT (activity always below detection limit), ALP (no response to drug treatment) and alpha-GST (too labor intensive and not...Continue Reading

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Related Concepts

Adenosine Triphosphate, Chromium Ammonium Salt
Cell Survival
Medicinal Plants Testing, Preclinical
Pharmaceutical Preparations
Xenobiotics
Viral Markers
Hepatocyte
Cell Line, Tumor
Alanine Transaminase
Alkaline Phosphatase

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