What question did this study set out to answer?

To examine the in vivo functional relationship between hemojuvelin and matriptase-2 in controlling hepcidin gene expression and iron balance.

September 14, 2009British Journal of Haematology

Suppression of the hepcidin‐encoding gene Hamp permits iron overload in mice lacking both hemojuvelin and matriptase‐2/TMPRSS6

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To examine the in vivo functional relationship between hemojuvelin and matriptase-2 in controlling hepcidin gene expression and iron balance.
Crossed mice lacking the protease domain of matriptase-2 with hemojuvelin-deficient mice to generate double-mutant models.
Assessed Hamp (Hamp1) gene expression alongside serum iron levels, transferrin saturation, liver iron stores, and cardiac iron content.
Mice lacking both functional matriptase-2 and hemojuvelin exhibited suppressed Hamp expression, marked transferrin saturation, and severe serum and liver iron overload.
Double-mutant mice displayed lower iron accumulation in cardiac tissue compared to mice lacking hemojuvelin alone, revealing a potential cardioprotective effect.

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Implication

Animal study demonstrates iron overload and suppressed Hamp in double-mutant mice, indicating that hemojuvelin is a primary substrate for matriptase-2.

Cite This Study

Truksa et al. (2009) studied this question.

synapsesocial.com/papers/6a85c94be954a56a77ada313 https://doi.org/10.1111/j.1365-2141.2009.07873.x

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Implication

Animal study demonstrates iron overload and suppressed Hamp in double-mutant mice, indicating that hemojuvelin is a primary substrate for matriptase-2.

Suppression of the hepcidin‐encoding gene Hamp permits iron overload in mice lacking both hemojuvelin and matriptase‐2/TMPRSS6

Key Points

Discussion

Implication

Cite This Study

Suppression of the hepcidin‐encoding gene Hamp permits iron overload in mice lacking both hemojuvelin and matriptase‐2/TMPRSS6

Key Points

Discussion

Implication

Cite This Study

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