Expression profile of cathepsin B in the fat body of Bombyx mori during metamorphosis

文献类型： 外文期刊

第一作者： Roh, Jong Yul

作者： Roh, Jong Yul;Je, Yeon Ho;Lee, Kwang Sik;Kim, Bo Yeon;Choo, Young Moo;Sohn, Hung Dae;Jin, Byung Rae;Yoon, Hyung Joo;Kang, Pil Don;Woo, Soo Dong;Gui, Zhong Zheng

作者机构：

关键词： Cathepsin;Cathepsin;Proteolysis;Metamorphosis;Silk worm;Insects;Apoptosis;Molt;RNAi

期刊名称：COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY （ 影响因子：2.231； 五年影响因子：2.215 ）

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收录情况： SCI

摘要： Proteolytic enzymes are involved in insect molting and metamorphosis, and play a vital role in the programmed cell death of obsolete organs. Herewe show the expression profile of cathepsin B in the fat body of the silkworm Bombyx mori during development. We also compare the expression profiles of B. mori cathepsins B (BmCatB) and D (BmCatD) during normal development and after RNA interference (RNAi)-mediated inhibition. BmCatB is induced by 20-OH-ecdysone, and is expressed in the fat body of B. mori during molting and the larval–pupal and pupal–adult transformations, where its expression leads to programmed cell death. In particular, BmCatB is highly expressed in the fat body of B. mori during the larval–pupal transformation, and BmCatB RNAi treatment resulted in an arrest of the larval–pupal transformation. RNAi-mediated BmCatB knockdown sustained the expression of BmCatD during the larval–pupal transformation. On the other hand, when BmCatD was inhibited via RNAi, the expression of BmCatB was upregulated. Based on these results, we conclude that BmCatB is involved in the programmed cell death of the fat body during B. mori metamorphosis, and that BmCatB and BmCatD contribute to B. mori metamorphosis.

分类号： Q5

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