Matrix Gla Protein deficiency reveals a previously unrecognized mucosal calcification in the mouse airways

MGP-deficient mice show markedly accelerated tracheal cartilage calcification and an additional, previously unrecognized tracheal mucosal calcification that is absent in wild-type mice.

• Why it matters: Tracheal calcification is common but its cellular and molecular origins are unclear, and human MGP-related disorders suggest a regulatory role that needs mechanistic definition in the respiratory tract.
• What they did: The study characterized calcification development in wild-type mice starting around one month after birth and tested MGP deficiency, assessing whether it changes the rostro-caudal progression and cellular differentiation pattern.
• The result: MGP deficiency accelerates calcification through a similar mechanism and induces mucosal calcification, providing a potential explanation for Keutel syndrome respiratory symptoms such as dyspnea, cough, stridor, and recurrent infections.

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