T-box brain transcription factor 1 (TBR1)

T-box brain transcription factor 1 (TBR1) is a neuron-specific transcription factor of the T-box family, characterized by a conserved DNA-binding domain[1][2][3][6]. It is critical for the differentiation and migration of glutamatergic projection neurons in the cerebral cortex and other brain regions, playing a key role in cortical and amygdalar development, neuronal migration, axon tract formation, and regulation of gene expression necessary for brain patterning and connectivity[1][2][3][5][6]. TBR1 repression or mutation leads to major defects in cortical lamination and neuronal projection, and human TBR1 mutations are strongly associated with neurodevelopmental disorders such as autism spectrum disorder and intellectual disability, including cases with speech delay, as well as being implicated in Alzheimer's and Parkinson's diseases[1][2][3][5][6]. TBR1 functions by controlling transcriptional cascades, including repression or activation of other key genes involved in neuronal identity and circuit formation, and interacts with a range of co-regulator proteins to orchestrate complex developmental programs across the developing brain[1][2][3][5][6]. There are currently no known drugs that target TBR1 directly as a therapeutic agent, and its utility is primarily in understanding disease mechanisms and developmental biology.

Other names

T-box brain protein 1T-brain-1TBR-1TES-56AUTS5IDDASMGC141978