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Home SCIENCE NEWS Biology

A dimmer switch for human brain cell growth

March 18, 2022
in Biology
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Controlling how cells grow is fundamental to ensuring proper brain development and stopping aggressive brain tumors. The network of molecules that control brain cell growth is thought to be complex and vast, but now McGill University researchers provide striking evidence of a single gene that can, by itself, control brain cell growth in humans.

Cluster of neuronal cells colored for genes known to be expressed in brain cells

Credit: Nuwan Hettige

Controlling how cells grow is fundamental to ensuring proper brain development and stopping aggressive brain tumors. The network of molecules that control brain cell growth is thought to be complex and vast, but now McGill University researchers provide striking evidence of a single gene that can, by itself, control brain cell growth in humans.

 

In a paper published recently in Stem Cell reports, Carl Ernst, an Associate Professor in the Department of Psychiatry at McGill University and his team have shown that the loss of the FOXG1 gene in brain cells from patients with severe microcephaly – a disease where the brain does not grow large enough – reduces brain cell growth.  Using genetic engineering, they turned on FOXG1 in cells from a microcephaly patient to different levels and showed corresponding increases in brain cell growth.  They have uncovered a remarkable dimmer switch to turn brain cell growth up or down.

 

Their research indicates that a single gene could potentially be targeted to stop brain tumour cells from growing. Or that future gene therapy might allow this same gene to be turned up in patients with microcephaly or other neurodevelopmental disorders.

 

“FOXG1 dose tunes cell proliferation dynamics in human forebrain progenitor cells”  by Nuwan C. Hettige et al. was published in Stem Cell Reports



Journal

Stem Cell Reports

DOI

10.1016/j.stemcr.2022.01.010

Subject of Research

Human tissue samples

Article Title

FOXG1 dose tunes cell proliferation dynamics in human forebrain progenitor cells

Article Publication Date

8-Mar-2022

Tags: braincelldimmergrowthhumanswitch
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