Yoda1 opens the lymphatic path for craniosynostosis therapy.

Area of Science:

• Neuroscience
• Vascular Biology
• Developmental Biology

Background:

• Meningeal lymphatic vessels (MLVs) play a role in neurological conditions.
• Craniosynostosis (CS) involves premature fusion of cranial sutures, leading to developmental issues.
• MLV dysfunction is implicated in conditions with altered intracranial pressure and cerebrospinal fluid (CSF) dynamics.

Purpose of the Study:

• To investigate the role of MLVs in craniosynostosis (CS).
• To explore the impact of MLV defects on CSF outflow and brain flow.
• To evaluate therapeutic strategies targeting MLVs in CS and related neurological pathologies.

Main Methods:

• Utilized Twist1-haploinsufficient mouse models exhibiting CS.
• Assessed intracranial pressure, CSF outflow, and paravascular CSF-brain flow.
• Investigated the effect of activating the mechanosensor Piezo1 using Yoda1.

Main Results:

• CS mice showed elevated intracranial pressure, reduced CSF outflow, and impaired paravascular flow.
• These CS features were linked to MLV defects and worsened Alzheimer's disease pathology in mouse models.
• Yoda1-mediated Piezo1 activation restored MLV function and CSF perfusion in CS and aged mice.

Conclusions:

• MLV dysfunction is a key feature of craniosynostosis with significant implications for CSF dynamics.
• Targeting Piezo1 offers a potential therapeutic approach for restoring MLV function and CSF flow.
• This research opens new avenues for treating neurological disorders associated with impaired CSF clearance.