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Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
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Updated: Jan 8, 2026

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Nurr1 Orchestrates Claustrum Development and Functionality.

Kuo Yan1, Andrew G Newman1, Pauline Lange1

  • 1Institute of Cell Biology and Neurobiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 23, 2025
PubMed
Summary
This summary is machine-generated.

Nurr1 is a key transcription factor essential for the development and function of the claustrum, a brain region involved in cognition. Its absence leads to structural abnormalities and behavioral deficits in mice.

Keywords:
Nurr1 (Nr4a2)claustrum dependent behaviorsclaustrum morphogenesisfunctional connectivitysingle cell transcriptome

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Biology

Background:

  • The claustrum, a forebrain structure, is widely interconnected and crucial for cognitive functions like consciousness.
  • Molecular mechanisms governing claustrum development and behavioral control remain largely unknown.

Purpose of the Study:

  • To elucidate the molecular mechanisms underlying claustrum development and its role in behavioral control.
  • To identify key transcription factors involved in claustral morphogenesis and cell fate specification.

Main Methods:

  • Investigated the role of Nurr1 (Nr4a2) in mouse models with Nurr1 deficiency.
  • Utilized single-cell transcriptomics to analyze gene expression changes.
  • Examined structural and functional connectivity of the claustrum.
  • Assessed behavioral phenotypes in Nurr1-deficient mice.

Main Results:

  • Nurr1 is identified as a critical transcription factor for claustral development, including morphogenesis, cell fate, and connectivity.
  • Nurr1 deficiency causes aberrant migration of claustral cells, altering claustrum structure and activating ectopic gene programs.
  • Impaired claustrum connectivity and dysregulated behaviors were observed in Nurr1-deficient mice.
  • Nurr1 suppresses Gαs-PKA signaling to regulate neuron positioning and cell fate.

Conclusions:

  • Nurr1 plays a pivotal role in orchestrating claustral development and function.
  • Disruption of Nurr1 function leads to structural brain abnormalities and behavioral deficits.
  • Nurr1's regulation of Gαs-PKA signaling is a key mechanism in controlling claustral neuron development.