Human-Monkey Chimeras for Modeling Human Disease: Opportunities and Challenges.

Area of Science:

• Biomedical Research
• Stem Cell Biology
• Neuroscience

Background:

• Developing accurate animal models for human diseases remains a significant challenge in biomedical research.
• Advances in pluripotent stem cell (PS cell) technology and chimera research offer new possibilities for creating more relevant disease models.

Purpose of the Study:

• To explore the potential of human-primate chimeras, specifically using human stem cells in non-ape primate hosts, as improved models for neurological and psychiatric diseases.
• To address the urgent ethical and scientific considerations surrounding the creation and use of such human-animal chimeras.

Main Methods:

• The study discusses the theoretical application of blastocyst complementation experiments involving human stem cells and primate embryos.
• It reviews recent advances in PS cell research and interspecies chimera generation techniques.

Main Results:

• Human-primate chimeras could potentially overcome limitations of current non-human primate models for studying complex human neurological and psychiatric conditions.
• The creation of these chimeras necessitates careful consideration of ethical issues, including invasive research practices and the moral status of chimeras.

Conclusions:

• The development of human-primate chimeras presents a promising avenue for advancing disease modeling but requires a thorough ethical and regulatory framework.
• Navigating the scientific potential against ethical concerns is crucial, especially given varying global regulations on human stem cell research in animal models.