Opinion: more mouse models and more translation needed for ALS

Area of Science:

• Neuroscience
• Genetics
• Disease Modeling

Background:

• Amyotrophic Lateral Sclerosis (ALS) is a complex neurodegenerative disorder with 90% of cases being sporadic (unknown origin) and 10% familial, linked to over 30 genes.
• Existing mouse models primarily represent genetic forms of ALS, failing to capture the complexity of sporadic ALS and its diverse molecular pathologies.
• Current therapeutic development relies on limited models, often tested on patients irrespective of their specific ALS subtype.

Purpose of the Study:

• To highlight the critical need for more innovative and complex mouse models in ALS research.
• To address the lack of adequate models for sporadic ALS, which constitutes the majority of cases.
• To improve the translation of basic research findings into effective clinical therapies for all ALS patients.

Main Methods:

• Review of current limitations in existing ALS mouse models.
• Comparison with successful strategies in cancer research, particularly in developing complex models and patient stratification.
• Analysis of the potential for advanced mouse models to elucidate key disease pathologies.

Main Results:

• Current mouse models are insufficient for understanding the majority of ALS cases (sporadic).
• The development of complex, targeted mouse models is essential for dissecting specific disease mechanisms.
• Patient stratification, inspired by cancer research, is a key component for successful clinical translation.

Conclusions:

• Innovative and complex mouse models are urgently required to advance the understanding of ALS pathologies.
• Adopting strategies like those in cancer research, including sophisticated modeling and patient stratification, can accelerate therapeutic development for ALS.
• Enhanced modeling is critical for bridging the gap between basic research and effective clinical treatments for Amyotrophic Lateral Sclerosis.