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A Human Cerebral Organoid Model of Neural Cell Transplantation
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Better science with human cell-based organ and tissue models.

Tuula Heinonen1

  • 1Finnish Centre for Alternative Methods, School of Medicine, University of Tampere, Finland.

Alternatives to Laboratory Animals : ATLA
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PubMed
Summary

Animal models poorly predict human health effects. Human organotypic models, mimicking human tissues, offer superior predictability for chemical safety assessment and pharmaceutical development, improving human science and animal welfare.

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Area of Science:

  • Toxicology
  • Biomedical Research
  • Drug Development

Background:

  • Animal-based models are standard for chemical safety and drug efficacy testing.
  • Despite genetic similarities, animal models exhibit poor predictability for human health outcomes.
  • There is a critical need for human-relevant testing strategies.

Purpose of the Study:

  • To highlight the limitations of animal models in predicting human health effects.
  • To advocate for the adoption of human organotypic models in safety assessment and pharmaceutical research.
  • To emphasize the importance of human-relevant biological data in advancing science.

Main Methods:

  • Characterization of human organotypic models at structural, genetic, and functional levels.
  • Comparison of organotypic models with corresponding human tissues.
  • Validation of model predictivity using known reference chemicals with human data.

Main Results:

  • Human organotypic models demonstrate high predictability by mimicking human tissue microenvironments.
  • Characterization and comparison confirm the biological relevance of these models.
  • Validation with reference chemicals supports their utility in safety assessment.

Conclusions:

  • Human organotypic models offer superior predictivity compared to animal models for human health effects.
  • These advanced models are essential for accurate safety assessment and pharmaceutical development.
  • Implementing human-relevant models enhances scientific understanding and promotes animal welfare.