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Updated: Jul 8, 2025
07:23
Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
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Transcription factors in microcephaly.
1Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
Frontiers in Neuroscience
|December 14, 2023
Summary
Human brain size, crucial for higher cognition, depends on developmental processes. Transcription factor genes are key regulators, and their disruption is linked to microcephaly, a condition of reduced head size.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Human higher cognition correlates with increased brain size, particularly forebrain cortical area.
- Brain development involves complex processes like cell proliferation, differentiation, migration, and apoptosis.
- Disruptions in these processes can lead to microcephaly (small brain) or megalencephaly (large brain).
Purpose of the Study:
- To review transcription factor genes involved in human cortical development.
- To explore the role of these genes in microcephaly.
- To highlight the importance of transcriptional regulation in brain size determination.
Main Methods:
- Literature review focusing on genes encoding transcription factors.
- Analysis of studies linking gene function to cortical development.
- Examination of genetic associations with microcephaly.
Main Results:
- Transcription factors (e.g., homeobox, bHLH, FOX, HMG, zinc finger) are critical for cortical development.
- Mutations or dysregulation in these transcription factor genes are implicated in microcephaly.
- Spatial and temporal transcriptional regulation is a key mechanism controlling brain size.
Conclusions:
- Transcription factors play a vital role in regulating genes essential for cortical development.
- Genetic defects in transcription factors are a significant cause of microcephaly.
- Understanding these genetic mechanisms is crucial for studying human brain evolution and developmental disorders.
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