食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 341-345.doi: 10.7506/spkx1002-6630-200919080

• 专题论述 • 上一篇    下一篇

TTX 的微生物合成及微生物转化和降解的可能性

舒 静,李柏林,欧 杰*   

  1. 上海海洋大学食品学院
  • 收稿日期:2009-07-09 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 欧 杰* E-mail:jou@shou.edu.cn
  • 基金资助:

    上海市科委部分地方院校计划项目(08390513900);“十一五”国家科技支撑计划项目(2008BAD94B09)

Microbial Synthesis, Transformation and Degradation of Tetrodotoxin

SHU Jing,LI Bai-lin,OU Jie*   

  1. (College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China)
  • Received:2009-07-09 Online:2009-10-01 Published:2010-12-29
  • Contact: OU Jie* E-mail:jou@shou.edu.cn

摘要:

TTX 是一种氨基全氢化喹唑啉化合物,是豚毒鱼类及其他生物体内含有的一种生物碱,也是一种强烈的神经毒素,较低的浓度就能选择性地抑制钠离子通过神经细胞膜。本文简要介绍TTX 的化学特性及其微生物来源,由于目前国内外尚无微生物来源的TTX 合成方面的详细报道,而与TTX 有类似结构和类似性质的石房蛤毒素和膝沟藻毒素的微生物合成均与精氨酸和乙酸的代谢有关,这些为TTX 的微生物合成提供了参考。综述微生物降解TTX 的类似结构化合物的研究成果,以此为基础探讨微生物转化降解TTX 使之由剧毒变为毒性减弱乃至无毒的可能性,并展望微生物转化降解TTX 的发展趋势。

关键词: 微生物合成, TTX, 转化, 降解

Abstract:

Tetrodotoxin (TTX) is a kind of amino-perhydrogenated quinazoline compound, which is an alkaloid in dolphin and other organisms. TTX is a strong neurotoxin and can selectively inhibit sodium ion transportation across nerve cell membrane at a low concentration. In this paper, chemical properties and microbial resource of TTX are reviewed. Currently, detailed investigations related to microbial synthesis of TTX have been less reported. However, microorganism synthesis of highly toxic substances such as saxitoxin and gonyautoxin with similar structures and properties as TTX has been reported to implement through arginine and acetate metabolisms. These previous investigations will also provide references for microorganism synthesis of TTX. Similarly, summarizing these achievements relative to microorganism degradation, a possibility or developing trend to degrade tetrodotoxin from high toxicity to low or no toxicity through microorganism transformation is proposed.

Key words: microbial synthesis, tetrodotoxin, transformation, degradation

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