Environmental Toxicology Biomarker Antibodies

Key Biomarker Targets

• CYP1A

Cytochrome P450 1A (CYP1A) is one of the most established molecular biomarkers for xenobiotic exposure. Its expression is regulated through aryl hydrocarbon receptor (AHR)-mediated pathways and is commonly induced by polycyclic aromatic hydrocarbons (PAHs), dioxin-like compounds, planar PCBs and related organic pollutants. Monitoring CYP1A protein expression can help researchers evaluate exposure to AHR agonists, characterize contaminant impact after oil spills or industrial discharge, and compare tissue-specific responses in liver, gill, intestine and other organs. CYP1A detection is particularly useful when combined with chemical analysis, because it provides biological confirmation that exposure has triggered a detoxification-related response rather than simply documenting the presence of a compound.

• Vitellogenin (Vtg)

Vitellogenin is a major biomarker for estrogenic endocrine disruption. In oviparous vertebrates, Vtg is normally synthesized in the liver of mature females under estrogen regulation and transported through the bloodstream for incorporation into developing oocytes. In male or juvenile fish, basal Vtg expression is usually very low; therefore, abnormal induction of Vtg is a sensitive indicator of exposure to estrogenic or estrogen-mimicking chemicals such as natural and synthetic hormones, alkylphenols, certain pesticides and wastewater-derived contaminants. Reliable anti-Vtg antibodies support ELISA, western blot and immunodetection workflows for screening endocrine-active substances, evaluating field-collected samples and comparing estrogenic responses across different species.

• Metallothionein (MT)

Metallothioneins are low-molecular-weight, cysteine-rich metal-binding proteins that play important roles in metal homeostasis, detoxification and protection against oxidative stress. Increased MT expression is frequently associated with exposure to cadmium, copper, zinc, mercury and other metal stressors, making MT a valuable biomarker for monitoring metal contamination in aquatic environments. Because metal exposure can vary by tissue, life stage, feeding behavior and habitat, antibody-based MT detection enables researchers to evaluate biological response patterns in environmentally relevant sample types. MT analysis is also useful in integrated biomarker studies, where metal detoxification responses are assessed alongside oxidative stress, immune response or reproductive endpoints.

• Zona Radiata Protein (Zrp)

Zona radiata proteins, also known as egg-envelope or chorion-related proteins in many fish species, are closely linked to oocyte development, egg-envelope formation and reproductive competence. Changes in Zrp expression can reflect reproductive status and may also indicate endocrine or contaminant-associated disruption of normal gonadal development. Zrp biomarkers are especially relevant in studies focused on reproductive toxicology, fish spawning condition, sex-specific protein expression and pollutant effects on early life-stage development. When used with Vtg and other reproductive markers, Zrp detection can provide a more complete view of how endocrine-active compounds influence female reproductive physiology and population-level risk.

Key Features

• Broad Biomarker Coverage

The portfolio includes antibodies against CYP1A, vitellogenin, metallothionein and zona radiata proteins, enabling multi-marker evaluation of contaminant exposure and biological effects.

• Multiple Species Reactivity

Products cover commonly studied fish species such as rainbow trout, Atlantic salmon, Atlantic cod, carp, turbot, zebrafish, medaka, killifish and stickleback, as well as selected wildlife species including alligator and birds.

• Application-Oriented Selection

Most products are listed for ELISA and western blot, with selected antibodies also suitable for immunohistochemistry, supporting both quantitative assay development and tissue-based biomarker analysis.