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Organoids and chimeras: the hopeful fusion transforming traumatic brain injury research
Cristina Bellotti1, Samudyata Samudyata2, Sebastian Thams1
1Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Abstract:
Research in the field of traumatic brain injury has until now heavily relied on the use of animal models to identify potential therapeutic approaches. However, a long series of failed clinical trials has brought many scientists to question the translational reliability of pre-clinical results obtained in animals. The search for an alternative to conventional models that better replicate human pathology in traumatic brain injury is thus of the utmost importance for the field. Recently, orthotopic xenotransplantation of human brain organoids into living animal models has been achieved. This review summarizes the existing literature on this new method, focusing on its potential applications in preclinical research, both in the context of cell replacement therapy and disease modelling. Given the obvious advantages of this approach to study human pathologies in an in vivo context, we here critically review its current limitations while considering its possible applications in traumatic brain injury research.
Insights
Human brain organoids transplanted into animals offer a promising new model for traumatic brain injury research, overcoming limitations of traditional animal studies for therapeutic development.
Area of Science:
- Neuroscience
- Regenerative Medicine
- Translational Research
Background:
- Traditional animal models for traumatic brain injury (TBI) research show limited translational reliability.
- Numerous failed clinical trials highlight the need for more human-relevant preclinical models.
- The limitations of current TBI models necessitate the development of alternative approaches.
Purpose of the Study:
- To review the emerging technique of orthotopic xenotransplantation of human brain organoids into animal models.
- To explore the potential applications of this novel model in TBI research, including disease modeling and cell replacement therapy.
- To critically assess the advantages and limitations of human brain organoid xenotransplantation for TBI studies.
Main Methods:
- Review of existing literature on orthotopic xenotransplantation of human brain organoids.
- Analysis of studies focusing on preclinical research applications in neuroscience.
- Evaluation of the methodology for integrating human brain organoids into living animal models.
Main Results:
- Orthotopic xenotransplantation of human brain organoids into animal models has been successfully achieved.
- This approach provides an in vivo context for studying human neuropathologies.
- The technique holds potential for both disease modeling and cell-based therapeutic strategies in TBI.
Conclusions:
- Human brain organoid xenotransplantation represents a significant advancement over conventional animal models for TBI research.
- This model offers a more translatable platform for evaluating therapeutic interventions and understanding human brain injury.
- Further research is warranted to overcome current limitations and fully realize the potential of this innovative TBI research model.
