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首页> 外文期刊>The international journal of developmental biology >Metamorphosis of Hydractinia echinata (Cnidaria) is caspase-dependent
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Metamorphosis of Hydractinia echinata (Cnidaria) is caspase-dependent

机译:紫锥菊的变态是依赖胱天蛋白酶的

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摘要

Apoptotic cell death plays an important role in many developmental pathways in multicellular animals. Here, we show that metamorphosis in the basal invertebrate Hydractinia echinata (Cnidaria) depends on the activity of caspases, the central enzymes in apoptosis. Caspases are activated during metamorphosis and this activity can be measured with caspase-3 specific fluorogenic substrates. In affinity labelling experiments 23/25 kDa bands were obtained, which represented active caspase. Specific inhibition of caspase activity with caspase-3 inhibitors abolished metamorphosis completely, reversibly and in a dose-dependent manner. This suggests that caspase activity is indispensable for metamorphosis in Hydractinia echinata.
机译:凋亡细胞死亡在多细胞动物的许多发育途径中起重要作用。在这里,我们显示了基底无脊椎动物紫锥菊(Cindaria)的变态取决于胱天蛋白酶的活性,胱天蛋白酶是凋亡中的中心酶。胱天蛋白酶在变态过程中被激活,并且该活性可以用caspase-3特异性的荧光底物来测量。在亲和标记实验中,获得了代表活性胱天蛋白酶的23/25 kDa条带。用caspase-3抑制剂对caspase活性的特异性抑制可完全,可逆地且以剂量依赖性方式消除变态。这表明半胱氨酸蛋白酶活性对于紫锥菊的变态是必不可少的。

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