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Article Abstract
Fish-egg lectins (FELs) are identified in several species of fishes, but their activity and mode of action remain largely unknown in early life stages. Here we showed that zebrafish FEL (zFEL) was a maternal factor, which was capable of interacting with Gram-negative and Gram-positive bacteria and enhancing the phagocytosis of the bacteria by macrophages. Interestingly, microinjection of purified native zFEL into the embryos (resulting in the increase of zFEL in the embryos) markedly promoted the resistance of the embryos to the pathogenic Aeromonas hydrophila. Taken together, zFEL appears a maternal immune-relevant molecule capable of defending the developing embryos/larvae from pathogenic attacks.
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| http://dx.doi.org/10.1016/j.fsi.2016.03.016 | DOI Listing |
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Article Synopsis
- Fish-egg lectins (FELs) are found in many fish species, but their function in early developmental stages is not well understood.
- Research revealed that zebrafish FEL (zFEL) is a maternal factor that helps combat bacteria by enhancing macrophage phagocytosis.
- Injecting purified zFEL into zebrafish embryos boosted their resistance to the harmful bacteria Aeromonas hydrophila, suggesting it plays a key role in maternal immune defense for developing embryos.