The unfolded protein response to PI*Z alpha‐1 antitrypsin in human hepatocellular and murine models
Yuanqing Lu, Liqun R. Wang, Jungnam Lee, Naweed S. Mohammad, Alek M. Aranyos, Calvin Gould, Nazli Khodayari, Regina A. Oshins, Craig G. Moneypenny, Mark L. Brantly – 26 May 2022 – Alpha‐1 antitrypsin (AAT) deficiency (AATD) is an inherited disease caused by mutations in the serpin family A member 1 (SERPINA1, also known as AAT) gene. The most common variant, PI*Z (Glu342Lys), causes accumulation of aberrantly folded AAT in the endoplasmic reticulum (ER) of hepatocytes that is associated with a toxic gain of function, hepatocellular injury, liver fibrosis, and hepatocellular carcinoma.