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Flashing light in sponges through their siliceous fiber network:A new strategy of “neuronal transmission” in animals

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Chinese Science Bulletin 2012年第25期57卷 3300-3311页

作者： WANG XiaoHong FAN XingTao SCHRODER Heinz C MULLER Werner E G National Research Center for Geoanalysis Chinese Academy of Geological SciencesBeijing 100037China ERC Advanced Grant Research Group at the Institute for Physiological Chemistry University Medical Center of the Johannes GutenbergUniversityMainz D-55099Germany

Sponges(phylum Porifera) represent a successful animal taxon that evolved prior to the Ediacaran-Cambrian boundary(542 million years ago).They have developed an almost complete array of cell-and tissue-based interaction systems necessary for the establishment of a functional,multicellular ***,a network of neurons,one cell/tissue-communication system is missing in *** fact is puzzling and enigmatic,because these animals possess receptors known to be involved in the nervous system in evolutionary younger animal *** an example,the metabotropic glutamate/GABA-like receptor has been identified and cloned by ***,we have identified a novel light transmission/light responsive system in sponges that is based on their skeletal elements,the siliceous glass fibers,termed *** classes of sponges,the Hexactinellida and the Demospongiae,possess a siliceous skeleton that is composed of *** the large spicules from hexactinellid sponges(>5 cm) revealed that these spicules are effective light-collecting optical *** we can report that the demosponge,Suberites domuncula,has a biosensor system consisting of the(organic) light producing luciferase and the(inorganic) light transducing silica *** light transmission features of these smaller spicules(200 μm) has been demonstrated and the ability of the sponge tissue to generate light had been *** for a luciferase gene in *** was *** the next step,we searched for a protein potentially involved in light *** a protein was identified,cloned and recombinantly expressed from *** protein sequence displays two domains characteristic of a cryptochrome,the N-terminal photolyase-related region and the C-terminal FAD-binding *** experimental data indicate that sponges may employ a network of luciferase-like proteins,a spicular system and a cryptochrome as the light source,optical waveguide and photosensor,***

关键词：海绵组织动物类群光纤网络硅质神经传导闪烁荧光素酶基因蛋白质序列

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Flashing light in sponges through their siliceous fiber network:A new strategy of “neuronal transmission” in animals

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Science Bulletin 2012年第25期 3301-3312页

作者： SCHRDER Heinz C MüLLER Werner E G ERC Advanced Grant Research Group at the Institute for Physiological Chemistry University Medical Center of the Johannes Gutenberg UniversityMainz D-55099Germany

关键词： sponges Suberites domuncula "nervous"-like signal system light transmission siliceous spicules luciferase cryptochrome

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