An overview on the origin and production of tetrodotoxin | 水產百科網

由SJal著作·2015·被引用53次—TTXispresentintaxonomicallydiversegroupsofanimalsinhabitingterrestrial,marine,freshwaterandbrackishwaterenvironments,stillitsoriginremainsunclear ...

Tetrodotoxin (TTX) is a deadly neurotoxin which selectively inhibits Na(+) activation mechanism of nerve impulse, without affecting the permeability of K(+) ions. Because of this sodium channel blocking action, it is majorly being studied for biomedical applications. TTX is present in taxonomically diverse groups of animals inhabiting terrestrial, marine, fresh water and brackish water environments, still its origin remains unclear. The extensive study of the toxin has revealed a few possibilities of its origin. This review reports on the aspects of the origin of TTX, where the primary focus is on its exogenous origin. The significance of bacterial, cellular and environmental factors in its biogenesis and accumulation is also discussed. The possible facets for engineering the bacterial genomics to modulate the gene expression for TTX production are also outlined.

Keywords: bacteria; environment; exogenou...