TitleHigh-throughput characterization of chemical-associated embryonic behavioral changes predicts teratogenic outcomes.
Publication TypeJournal Article
Year of Publication2016
AuthorsReif, DM, Truong, L, Mandrell, D, Marvel, S, Zhang, G, Tanguay, RL
JournalArch Toxicol
Date Published2016 Jun
KeywordsAnimals, Behavior, Animal, Dose-Response Relationship, Drug, Embryo, Nonmammalian, Hazardous Substances, High-Throughput Screening Assays, Predictive Value of Tests, Teratogens, Zebrafish

New strategies are needed to address the data gap between the bioactivity of chemicals in the environment versus existing hazard information. We address whether a high-throughput screening (HTS) system using a vertebrate organism (embryonic zebrafish) can characterize chemical-elicited behavioral responses at an early, 24 hours post-fertilization (hpf) stage that predict teratogenic consequences at a later developmental stage. The system was used to generate full concentration-response behavioral profiles at 24 hpf across 1060 ToxCast™ chemicals. Detailed, morphological evaluation of all individuals was performed as experimental follow-up at 5 days post-fertilization (dpf). Chemicals eliciting behavioral responses were also mapped against external HTS in vitro results to identify specific molecular targets and neurosignalling pathways. We found that, as an integrative measure of normal development, significant alterations in movement highlighted active chemicals representing several modes of action. These early behavioral responses were predictive for 17 specific developmental abnormalities and mortality measured at 5 dpf, often at lower (i.e., more potent) concentrations than those at which morphological effects were observed. Therefore, this system can provide rapid characterization of chemical-elicited behavioral responses at an early developmental stage that are predictive of observable adverse effects later in life.

Alternate JournalArch. Toxicol.
PubMed ID26126630
PubMed Central IDPMC4701642
Grant ListP30 ES025128 / ES / NIEHS NIH HHS / United States
R01 ES023788 / ES / NIEHS NIH HHS / United States
R01 ES019604 / ES / NIEHS NIH HHS / United States
RC4 ES019764 / ES / NIEHS NIH HHS / United States
P42 ES016465 / ES / NIEHS NIH HHS / United States
P30 ES000210 / ES / NIEHS NIH HHS / United States
P42 ES005948 / ES / NIEHS NIH HHS / United States