Oligodendroglial TANGO2 Regulates Lipid Metabolism to Control Motor Coordination

Area of Science:

• Neuroscience
• Genetics
• Metabolic Disorders

Background:

• TANGO2 deficiency disorder (TDD) is a rare genetic condition with severe neurological symptoms.
• The precise pathological mechanisms of TANGO2 loss-of-function in neurological deficits are not understood.

Purpose of the Study:

• To investigate the role of TANGO2 in the central nervous system (CNS) using mouse models.
• To elucidate the molecular mechanisms underlying TDD-related neurological symptoms.

Main Methods:

• Generation of constitutive and oligodendrocyte-specific Tango2 knockout mouse models.
• Behavioral analyses, morphological quantifications, transcriptional analysis, and lipidomic profiling.
• Assessment of vitamin B5 supplementation effects on knockout mice.

Main Results:

• Tango2 deletion in mice recapitulated motor deficits seen in TDD patients.
• Loss of Tango2 caused significant cerebellar myelin loss and increased synapse numbers.
• Tango2 deficiency downregulated phospholipid metabolism pathways.
• Vitamin B5 supplementation improved motor function and reduced myelin defects in knockout mice.

Conclusions:

• TANGO2 is essential for maintaining normal motor behaviors.
• TANGO2 regulates lipid metabolism, particularly phospholipid metabolism, in oligodendroglia.
• Vitamin B5 shows promise as a therapeutic intervention for TANGO2 deficiency disorder.