Effect of Alpha-1 Antitrypsin Deficiency on Zinc Homeostasis Gene Regulation and Interaction with Endoplasmic Reticulum Stress Response-Associated Genes
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View abstract on PubMed
Summary
This summary is machine-generated.Alpha-1 antitrypsin deficiency (AATD) impacts zinc levels and related gene expression. This study reveals zinc homeostasis gene involvement in the unfolded protein response (UPR) associated with AATD.
Area Of Science
- Genetics and Molecular Biology
- Hepatology
- Nutritional Science
Background
- Alpha-1 antitrypsin deficiency (AATD) is a genetic disorder affecting the lungs and liver, caused by <i>SERPINA1</i> gene mutations.
- The Z allele leads to misfolded alpha-1 antitrypsin (AAT) proteins, causing endoplasmic reticulum (ER) stress and activating the unfolded protein response (UPR).
- Limited information exists on nutritional recommendations for AATD, particularly concerning zinc metabolism and supplementation benefits.
Purpose Of The Study
- To investigate the relationship between AATD and zinc metabolism.
- To explore the role of zinc homeostasis in the UPR pathway in AATD.
Main Methods
- In vitro experiments using cultured mouse hepatocytes expressing mutant ATT (ATZ).
- Computational analysis of Gene Expression Omnibus (GEO) data from murine models of AATD (PiZ mice).
- Bayesian network analysis to identify gene-gene interactions.
Main Results
- Expression of ATZ in hepatocytes decreased labile zinc levels and dysregulated zinc homeostasis genes.
- PiZ mice showed significant differences in mRNA levels for zinc homeostasis and UPR genes compared to wildtype.
- Novel interactions were identified between zinc transporters, zinc homeostasis, and UPR-associated genes.
Conclusions
- Zinc homeostasis genes play a role in UPR processes in AATD.
- Findings offer insights into the molecular mechanisms linking AATD, ER stress, and zinc metabolism.
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