Nutrigenomics and immune function in fish: new insights from omics technologies

Area of Science:

• Aquaculture nutrition and immunology

Background:

• Formulated fish feeds differ from natural diets, using more terrestrial ingredients.
• Functional feeds aim to improve fish health and disease resistance.
• The integration of nutrition, energy status, and immune function in fish is not fully understood.

Purpose of the Study:

• To clarify the impact of nutrition on fish immune systems using advanced molecular techniques.
• To investigate how changes in feed composition affect fish health and immunity.

Main Methods:

• Utilized omics technologies like transcriptomics (microarray, RNA-seq) and proteomics.
• Employed molecular pathway enrichment analysis to identify altered immune gene modules.
• Focused on both local (intestinal) and systemic immune responses.

Main Results:

• Omics technologies are revealing the effects of nutrition on fish immunity.
• Molecular pathway analysis highlights changes in both local and systemic immune functions.
• Significant progress has been made in defining host immune function alterations.

Conclusions:

• The study advances understanding of how nutrition impacts fish immune systems.
• Further research is needed to explore the interplay between fish nutrition, gut microbiome, and immunity.
• Emerging research is beginning to uncover the complex interactions within fish health management.