RiboTRAP-seq identifies spatially distinct functions for the anterior and posterior intestine in immune and metabolic regulation in Caenorhabditis elegans.

RiboTRAP-seq reveals that anterior INT1 cells in C. elegans intestine are enriched for immune and stress response genes and are crucial for pathogen avoidance and survival.

• Why it matters: Understanding the molecular specialization along the intestinal epithelium is essential for comprehending how different gut regions coordinate immune and metabolic functions, yet this remains poorly characterized.
• What they did: The study generated cell type-specific translatomes of C. elegans intestine during fasting and refeeding, focusing on anterior INT1 cells and other intestinal regions, identifying their distinct gene expression profiles.
• The result: Findings show that INT1 cells act as sentinel enteroendocrine cells sensing luminal pyruvate to regulate immune and endocrine responses, providing a resource for future segment-specific intestinal research.