A Modified Murine Embryonic Stem Cell Test for Evaluating the Teratogenic Effects of Drugs.
Methods Mol Biol
; 2753: 217-230, 2024.
Article
en En
| MEDLINE
| ID: mdl-38285341
ABSTRACT
Animal-based test systems have traditionally been used to screen for the potential teratogenic activity of drugs. Still, their deficits in predicting precise human-specific outcomes and ethical concerns have led to a need for alternative approaches. In vitro, teratogenicity testing using cell cultures or other in vitro systems is a potential alternative. Of the different in vitro platforms, the mouse embryonic stem cell test (mEST) is currently the most widely used and validated in vitro test for assessing the potential effects of teratogens on early embryonic development. The mEST involves exposing mouse embryonic stem cells to the test compound and monitoring their differentiation for several days.Nevertheless, its predictive ability was comparatively lower when distinguishing weak developmental toxicants from non-toxic substances. Since then, several modifications and adaptations of the mEST protocol have been developed. This chapter describes an alternative method based on molecular approaches to predict embryotoxicity. This method, originated from the mEST, analyzes the expression of differentiation genes involved in the development of mesoderm, endoderm, and stoderm and allows screening embryo-toxicants with different mechanisms of action. The hanging drops embryoid bodies used in the original mEST protocol have been replaced with monolayer culture, and thus the process has been shortened. In general, the method shows higher predictability compared with the traditional ones.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Células Madre Embrionarias
/
Teratogénesis
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Aspecto:
Ethics
Límite:
Animals
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Methods Mol Biol
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2024
Tipo del documento:
Article
País de afiliación:
Irán