Zinc-alpha-2-glycoprotein is a protein that in humans is encoded by the AZGP1 gene. This gene expresses a soluble protein that stimulates lipolysis, induces a reduction in body fat in mice, is associated with the cachexia related to cancer, and is known to be expressed in secretory cells of lung epithelium. In 2009, it was found that smoking increases expression of this gene, which is why smoking cessation leads to weight gain. Zinc-alpha-2-glycoprotein levels also rise with onset of diabetes 2, which accounts for weight loss thereafter.
Background References
1. Alenad AM et al. Associations of zinc-alpha-2-glycoprotein with metabolic syndrome and its components among adult Arabs. Sci Rep. 2022 Mar
2. Verma S et al. Zinc Alpha-2-Glycoprotein (ZAG/AZGP1) secreted by triple-negative breast cancer promotes tumor microenvironment fibrosis. bioRxiv [Preprint]. 2024 Mar
Western blot analysis of Zinc Alpha 2 Glycoprotein on different lysates with Rabbit anti-Zinc Alpha 2 Glycoprotein antibody (HA722298) at 1/1,000 dilution.
Lane 1: Human serum lysate Lane 2: Human plasma lysate
Lysates/proteins at 15 µg/Lane.
Predicted band size: 34 kDa Observed band size: 41 kDa
Exposure time: 10 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722298) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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