Ferritin H gene deletion in the choroid plexus and forebrain results in hydrocephalus
Claude Schweizer1, Patrick C Fraering2, Lukas C Kühn3
1Swiss Institute for Experimental Cancer Research (ISREC), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Insights
Forebrain-specific inactivation of the ferritin H gene in mice led to cerebrospinal fluid accumulation. This ferritin H deficiency impacted brain development but did not alter iron content.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Ferritin H is a crucial iron storage protein with known roles in embryonic development, liver, and intestine.
- The specific functions of ferritin H within the brain remain largely unexplored.
Purpose of the Study:
- To investigate the essential functions of ferritin H in the mammalian brain.
- To determine the consequences of forebrain-specific ferritin H gene inactivation.
Main Methods:
- Utilized the Cre/loxP system for targeted gene manipulation.
- Generated genetically modified mice with forebrain-specific ferritin H gene knockout.
- Analyzed brain morphology and iron content in knockout mice.
Main Results:
- Forebrain-specific ferritin H deficiency resulted in the accumulation of cerebrospinal fluid within the lateral ventricles and subarachnoid space.
- This phenotype was observed in most forebrain cells, including those of the choroid plexus.
- Despite the observed fluid accumulation, overall brain tissue iron content remained unchanged.
Conclusions:
- Ferritin H plays a critical role in maintaining normal cerebrospinal fluid homeostasis in the brain.
- The study highlights a novel function of ferritin H in brain development and fluid regulation.
- Further research is warranted to elucidate the precise mechanisms underlying ferritin H's role in the brain.
Abstract:
Ferritin H, the major iron storage protein, has essential functions in early embryonic development as well as in adult liver and intestine. To address the question whether ferritin H has similarly essential functions in the brain we used the Cre/loxP system to generate mice with a forebrain-specific inactivation of the ferritin H gene. Ferritin H deficiency in most cells of the forebrain including cells of the choroid plexus caused accumulation of cerebrospinal fluid in the lateral ventricles and the subarachnoid space. Brain tissue iron content was unchanged.
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