Transcriptome Analysis of Potential Genes Involved in Innate Immunity in Mudflat Crab (Helice tientsinensis)

Area of Science:

• Marine biology
• Crustacean immunology
• Aquaculture pathology

Background:

• Mudflat crabs (H. tientsinensis) are ecologically and economically important intertidal species.
• Vibrio species are significant marine bacterial pathogens, causing disease in various aquatic organisms.
• The immune response of H. tientsinensis to Vibrio infections is not well understood.

Purpose of the Study:

• To investigate the physiological and immune mechanisms of H. tientsinensis against Vibrio parahaemolyticus infection.
• To analyze structural changes and differential gene expression in response to infection.
• To provide insights for aquaculture management and disease resistance.

Main Methods:

• Infection of mudflat crabs with Vibrio parahaemolyticus.
• Histopathological examination of gill and hepatopancreas tissues.
• Transcriptome analysis to identify differentially expressed genes (DEGs).
• KEGG enrichment analysis for pathway identification.

Main Results:

• V. parahaemolyticus infection induced cellular damage in gills and hepatopancreas.
• Significant differential gene expression observed in both tissues, with DEGs related to ribosomal subunits (gills) and energy metabolism/lipid transport (hepatopancreas).
• Immune pathways, amino acid metabolism, and DNA adducts were identified as crucial for defense.

Conclusions:

• H. tientsinensis exhibits specific structural and molecular responses to V. parahaemolyticus infection.
• Gene expression analysis highlights the roles of ribosomal function, energy metabolism, and immune pathways in crab defense.
• Understanding these mechanisms can improve disease management in crab aquaculture.