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Profiling Individual Human Embryonic Stem Cells by Quantitative RT-PCR
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Teratogen screening using transcriptome profiling of differentiating human embryonic stem cells.

Yoav Mayshar1, Ofra Yanuka, Nissim Benvenisty

  • 1Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem, Israel.

Journal of Cellular and Molecular Medicine
|June 22, 2010
PubMed
Summary
This summary is machine-generated.

This study identifies teratogenic effects of drugs like ethanol and retinoic acid (RA) on human embryonic development using stem cells. The findings offer a new method for screening teratogens, complementing animal models.

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Area of Science:

  • Developmental Biology
  • Toxicology
  • Stem Cell Biology

Background:

  • Teratogens cause embryonic defects, but identification is challenging due to species-specific responses.
  • Existing animal screening methods have limitations in predicting human developmental toxicity.

Purpose of the Study:

  • To investigate the teratogenic effects of various compounds on early human development.
  • To establish a non-biased expression profiling method using human stem cells for teratogen screening.

Main Methods:

  • Differentiating human embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs).
  • Treatment with known teratogens: ethanol, lithium, retinoic acid (RA), caffeine, and thalidomide.
  • Non-biased gene expression profiling to analyze developmental pathways.

Main Results:

  • Ethanol significantly increased endodermal differentiation.
  • Retinoic acid (RA) disrupted neural development pathways.
  • Thalidomide impacted both endodermal and neural development processes.
  • Identified specific teratogenic effects and affected tissues/pathways for each compound.

Conclusions:

  • The proposed stem cell-based expression profiling method is effective for identifying teratogenic effects on human development.
  • This approach provides a valuable complement to traditional animal-based teratogen screening.
  • Highlights the distinct and overlapping developmental toxicities of ethanol, RA, and thalidomide.