Skólmowska Magdalena, Kmieć Marek
Katedra Genetyki i Ogólnej Hodowli Zwierząt, Wydział Biotechnologii i Hodowli Zwierząt, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie.
Postepy Hig Med Dosw (Online). 2011 Oct 6;65:640-4. doi: 10.5604/17322693.962163.
The application of catalase and superoxide dismutase in daily practice encounters many difficulties connected first of all with their loss of activity, and even with their degradation. Both enzymes, catalase and superoxide dismutase, practically do not penetrate biological membranes, which limits or even makes impossible their protective activity directed against ROS. However, the penetration of the membranous barrier becomes possible after the location of the enzymes in lipidic structures. One of the technologies of stabilization of the activity of enzymes consists in closing them in a liposome structure. The incorporation of the enzymes into a closed, such as liposome, structure or into their lipid bilayer screens and simultaneously protects them against degradation which they would undergo during use in the unshaded form. Concurrently it extends their half life and also increases their activity and stability. The structure in which an enzyme is enclosed in a liposome is called an enzymosome.
过氧化氢酶和超氧化物歧化酶在日常应用中遇到许多困难,首先与它们活性的丧失甚至降解有关。过氧化氢酶和超氧化物歧化酶这两种酶实际上都不能穿透生物膜,这限制甚至使其针对活性氧的保护活性无法实现。然而,当酶位于脂质结构中后,穿过膜屏障就成为可能。稳定酶活性的技术之一是将它们封闭在脂质体结构中。将酶掺入封闭结构(如脂质体)或其脂质双层中,既能屏蔽又能保护它们在以未遮蔽形式使用时免受降解。同时,这延长了它们的半衰期,还提高了它们的活性和稳定性。酶被封闭在脂质体中的结构称为酶体。