ArticleThe Journal of clinical investigation2026
GPR182 and the reframing of lacteal chylomicron uptake.
Article in The Journal of clinical investigation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Historically, research on chylomicron entry into intestinal lymphatic vessels (lacteals) has been polarized between paracellular and transcellular transport models. In this issue of the JCI, Sun et al. identified GPR182 as a lipoprotein receptor in lymphatic endothelial cells (LECs), profoundly advancing our understanding of intestinal lipid absorption. They observed poor fat absorption in GPR182-deficient mice and demonstrated the role of GPR182 in transporting chylomicrons across the LECs into the lacteal lumen. This discovery establishes a molecular basis for transcellular transport of chylomicrons, challenging the traditional view that lacteal lipid entry is predominantly paracellular. By linking receptor-mediated uptake to impaired fat absorption and protection against fat-induced obesity and steatosis, this study expands the biological and translational implications of lacteal transport. Consequently, rather than favoring a single model, future research should investigate the integration of both paracellular and transcellular transport models in vivo.
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