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Exploring Fish Parvalbumins through Allergen Names and Gene Identities
Johannes M Dijkstra1, Annette Kuehn2, Eiji Sugihara3
1Center for Medical Science, Fujita Health University, Toyoake 470-1192, Japan.
Genes
|October 26, 2024
Summary
Fish parvalbumins, a major cause of food allergies, have complex genetics. This study introduces a new gene naming system (PVALB1-PVALB10) to clarify fish parvalbumin gene identification and reduce allergen confusion.
Area of Science:
- Molecular Biology
- Immunology
- Genetics
- Food Science
Background:
- Parvalbumins are primary fish food allergens, with multiple variants per species.
- Current allergen naming is species-specific and can be misleading regarding protein similarity.
- This ambiguity complicates research into fish allergies.
Purpose of the Study:
- To elucidate the molecular basis of fish parvalbumins.
- To provide an accessible explanation of fish parvalbumin genetics for researchers.
- To establish a standardized gene identification system for fish parvalbumins.
Main Methods:
- Proposed a new nomenclature for ten ancestral parvalbumin genes (PVALB1-PVALB10).
- Introduced variant naming for duplicated genes (e.g., PVALB2A, PVALB2B).
- Systematically analyzed parvalbumin genes in red seabream and chum salmon as examples.
- Provided gene identifications for known parvalbumin allergens across various fish species.
Main Results:
- Teleost fish possess up to 22 parvalbumin genes, all derived from ten ancestral genes.
- The proposed nomenclature system systematically identifies fish parvalbumin genes.
- Illustrative analyses confirmed the system's utility in common allergy-inducing fish.
Conclusions:
- The new PVALB nomenclature clarifies the complex genetics of fish parvalbumins.
- This standardized system will aid researchers in identifying fish allergens and understanding cross-reactivity.
- Improved gene identification facilitates advancements in managing fish allergies.
