Proteome profiling of L3 and L4 Anisakis simplex development stages by TMT-based quantitative proteomics

Area of Science:

• Parasitology
• Proteomics
• Foodborne Diseases

Background:

• Anisakis simplex is a parasitic nematode causing anisakiosis and allergic reactions in humans.
• Invasive third-stage larvae (L3) in fish and fourth-stage larvae (L4) in marine mammals pose a global health concern.
• Control and prevention strategies are essential for this emerging public health issue.

Purpose of the Study:

• To comprehensively analyze and compare the global proteomes of Anisakis simplex third-stage larvae (L3) and fourth-stage larvae (L4).
• To identify stage-specific proteins that can serve as potential targets for parasite control and disease eradication.

Main Methods:

• Quantitative proteomics using Tandem Mass Tag (TMT) labeling.
• Protein extraction from L3 and L4 stages.
• High-Intensity Focused Ultrasound (HIFU)-assisted trypsin digestion.
• High-pH reversed-phase fractionation and LC-MS/MS analysis.

Main Results:

• Identification of 2443 unique proteins in Anisakis simplex.
• Characterization of stage-specific proteomic signatures for L3 (e.g., pseudocoelomic globin, endochitinase 1) and L4 (e.g., neprilysin-2, glutamate dehydrogenase).
• Establishment of the most comprehensive protein dataset for A. simplex L3 and L4 stages to date.

Conclusions:

• The identified stage-specific proteins provide valuable insights into Anisakis simplex biology.
• These proteins represent potential targets for developing novel diagnostic and therapeutic strategies against anisakiosis.
• This research contributes to controlling fish-borne parasitic diseases and improving food safety.