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Structure-function Studies in Mouse Embryonic Stem Cells Using Recombinase-mediated Cassette Exchange

Structure-function Studies in Mouse Embryonic Stem Cells Using Recombinase-mediated Cassette Exchange

Published on: April 27, 2017

Fezf2 regulates telencephalic precursor differentiation from mouse embryonic stem cells.

Zhi-Bo Wang¹, Erin Boisvert, Xiaoqing Zhang

¹Department of Neuroscience, University of Connecticut Health Center, Farmington, CT 06030, USA.

Cerebral Cortex (New York, N.Y. : 1991)

|February 19, 2011

Summary

Forebrain embryonic zinc finger like (Fezf2) acts as a key transcription factor in early brain development. Fezf2 controls cell fate by regulating rostrocaudal and dorsoventral patterning genes during neural progenitor specification.

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Area of Science:

Neuroscience
Developmental Biology
Stem Cell Biology

Background:

Mechanisms of transcription factor-mediated lineage restriction in cortical neuron specification are poorly understood.
Understanding early patterning events is crucial for developmental neuroscience.

Purpose of the Study:

To investigate the role of forebrain embryonic zinc finger like (Fezf2) in controlling stepwise lineage restriction during cortical neuron specification.
To elucidate Fezf2's function in early rostrocaudal and later dorsoventral patterning of neural progenitors.

Main Methods:

Generation of Fezf2 knockdown and tetracycline-inducible Fezf2 overexpression mouse embryonic stem cell (mESC) lines.
Analysis of gene expression patterns (e.g., Foxg1, Six3, En1, Irx) following Fezf2 manipulation.
Assessment of Wnt signaling pathway involvement.

Main Results:

Early Fezf2 overexpression increased rostral forebrain progenitors (Foxg1(+), Six3(+)) and inhibited midbrain/caudal diencephalon factors (En1(+), Irx(+)), partly via Wnt signaling.
Fezf2 knockdown decreased Foxg1/Six3 and increased En1 expression, confirming its role in rostrocaudal patterning.
Later Fezf2 overexpression promoted dorsal telencephalic progenitors and deep-layer cortical neurons, indicating a role in dorsoventral patterning.

Conclusions:

Fezf2 acts as a critical regulator of telencephalic progenitor specification from mESCs.
Fezf2 differentially regulates rostrocaudal and dorsoventral patterning genes during distinct developmental stages.