Journal: Journal of Advanced Research
Article Title: Fish oil reduces intestinal fat absorption by promoting lacteal junction zippering via GPR120-VEGFR3-MLCK pathway
doi: 10.1016/j.jare.2025.05.026
Figure Lengend Snippet: Fish oil gavage suppressed intestinal fat absorption associated with elevated proportion of lacteal zipper-like junctions and decreased expression of VEGFR3 in mice jejunum. (A) Oral fat tolerance test plasma TG level schematic. (B) Fat tolerance test serum TG levels at indicated times. (C, D) Effects of lard oil (with/without fish oil) on the expression of VEGFC, VEGFR3, and chylomicron formation related protein (ApoB48, MTTP) in the jejunum of chow diet-fed mice. (E) Button-like junctions (open) allow chylomicrons into lacteals; zipper-like junctions (closed) prevent this. (F, G) Morphometric analysis of jejunal villus length and lacteal dimensions (length/width) in mice: Representative imaging and quantitative comparisons. (H, I) Visual and comparative analysis of VE-cadherin positive junctions in mice jejunum lacteals. Each boxed area is highly magnified to differentiate button-like (red arrowheads) and zipper-like (yellow arrowheads) junctions. Scale bars, 50 μm. Data are represented as means ± SEM. Two-tailed unpaired Student’s t -test was performed to compare lard oil (with/without fish oil)-treated mice versus at the same time points. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
Article Snippet: Primary antibodies include CD36 (proteintech,18836–1-AP), VEGFC (proteintech,67116–1-Ig), VEGFR3 (R&D, AF743), ApoB48 (ThermoFisher, MA5-35458), MTTP (ThermoFisher, PA5-102474,), MLCK (ThermoFisher Scientific, PA5100908), GPR120 (Santa Cruz, sc-9901), p-MLC2 (CST, 95777S, Thr18/Ser19), GAPDH (Bioworld, AP0063), β-actin (Bioworld, AP0060) and β-Tubulin (Bioworld, AP0064).
Techniques: Expressing, Clinical Proteomics, Imaging, Two Tailed Test