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Target intelligence / Profile preview
Necator americanus glutathione S-transferase-1 (Na-GST-1)
- Target
- Na-GST-1
- Molecular classification
- Enzyme, Transferase (specifically glutathione S-transferase), Nu-class GST (nematode-specific)
01
Overview
Necator americanus glutathione S-transferase-1 is a nematode-specific enzyme (nu-class GST) involved in the detoxification of heme and metabolism of electrophiles, critical for the survival and blood-feeding of the adult human hookworm parasite. It has a unique heme-binding site and limited substrate range outside heme-related molecules, distinguishing it structurally and functionally from other GST families. Na-GST-1 is the lead antigen in ongoing vaccine development for hookworm infection, eliciting protective antibody responses and showing cross-species conservation that may provide protection against multiple hookworm species. Recombinant forms are produced in yeast for large-scale vaccine trials, and recent mRNA vaccine candidates further exploit its immunogenic properties.
- Other names
- Na-GST-1GST-1Glutathione S-transferase-1 of Necator americanus
02
Mechanism of action
Drugs or vaccines targeting Na-GST-1 elicit an immune response (production of IgG antibodies) that neutralizes parasite GST-1, impairs heme detoxification, and decreases parasite survival
03
Biological functions
Detoxification of heme in the parasite gutMetabolism of electrophilic compounds, aiding the inactivation/degradation of endogenous and exogenous toxicants via conjugation with glutathioneModulation of host immune response, playing a role in immune evasion
04
Disease associations
Infection (human hookworm disease, anemia)
05
Safety considerations
Cross-reactivity is possible due to sequence and structural similarity with GSTs from other hookworms, but this may enhance broad protection, not safety riskNo notable toxicity reported for recombinant Na-GST-1 in clinical trials
06
Interacting drugs
None approved; but it is a major vaccine antigen (e.g., recombinant Na-GST-1 vaccine candidates)
07
Biomarkers
Antigen-specific IgG titers against Na-GST-1 used to monitor immunogenicity and efficacy of vaccine candidates
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