Cortico-thalamic development and disease: From cells, to circuits, to schizophrenia

Area of Science:

• Neuroscience
• Developmental Biology
• Computational Biology

Background:

• The human brain's complexity arises from intricate neural network development.
• Cortico-thalamic and thalamo-cortical (CT-TC) circuits are crucial for cognitive functions like wakefulness, sleep, and memory.
• Alterations in CT-TC circuits are linked to neurodevelopmental and psychiatric disorders, including schizophrenia, autism, and epilepsy.

Purpose of the Study:

• To review the ontogenesis and molecular/cellular mechanisms of CT-TC circuit development.
• To discuss various models used for studying CT-TC development, from animal models to advanced in vitro platforms.
• To highlight the role of CT-TC circuitry in both physiological and pathological brain conditions.

Main Methods:

• Review of existing literature on CT-TC circuit development.
• Discussion of animal models for studying neural network establishment.
• Exploration of advanced in vitro platforms like brain organoids and assembloids.
• Inclusion of in silico approaches for analyzing CT-TC circuitry.

Main Results:

• CT-TC circuits are fundamental for higher brain functions and are implicated in major psychiatric and neurodevelopmental disorders.
• Brain organoids and assembloids offer novel in vitro systems for studying human CT-TC development and its dysfunctions.
• In silico methods provide valuable insights into CT-TC connectivity maps in health and disease.

Conclusions:

• Understanding CT-TC circuit development is essential for deciphering brain function and pathology.
• Advanced models like organoids and computational approaches are accelerating research into CT-TC circuitry.
• Further research into CT-TC development holds promise for understanding and treating complex brain disorders.