Silkworm coatomers and their role in tube expansion of posterior silkgland.
Silkworm coatomers and their role in tube expansion of posterior silkgland.
复制标题
蚕外壳及其在后丝腺管扩张中的作用。
DOI:
10.1371/journal.pone.0013252
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发表时间:
2010-10-12
期刊:
影响因子:
3.7
通讯作者:
Chen J
中科院分区:
文献类型:
--
作者:
Wang Q;Shen B;Zheng P;Feng H;Chen L;Zhang J;Zhang C;Zhang G;Teng J;Chen J
Coat protein complex I (COPI) vesicles, coated by seven coatomer subunits, are mainly responsible for Golgi-to-ER transport. Silkworm posterior silkgland (PSG), a highly differentiated secretory tissue, secretes fibroin for silk production, but many physiological processes in the PSG cells await further investigation. Here, to investigate the role of silkworm COPI, we cloned six silkworm COPI subunits (α,β,β′, δ, ε, and ζ-COP), determined their peak expression in day 2 in fifth-instar PSG, and visualized the localization of COPI, as a coat complex, with cis-Golgi. By dsRNA injection into silkworm larvae, we suppressed the expression of α-, β′- and γ-COP, and demonstrated that COPI subunits were required for PSG tube expansion. Knockdown of α-COP disrupted the integrity of Golgi apparatus and led to a narrower glandular lumen of the PSG, suggesting that silkworm COPI is essential for PSG tube expansion. The initial characterization reveals the essential roles of silkworm COPI in PSG. Although silkworm COPI resembles the previously characterized coatomers in other organisms, some surprising findings require further investigation. Therefore, our results suggest the silkworm as a model for studying intracellular transport, and would facilitate the establishment of silkworm PSG as an efficient bioreactor.
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DOI:
10.1083/jcb.128.3.293
发表时间:
1995-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lippincott-Schwartz J;Cole NB;Marotta A;Conrad PA;Bloom GS
通讯作者:
Bloom GS
DOI:
10.1073/pnas.0611360104
发表时间:
2007-03-13
影响因子:
11.1
作者:
Moelleken, Joerg;Malsam, Joerg;Wieland, Felix T.
通讯作者:
Wieland, Felix T.
DOI:
10.1073/pnas.0511270103
发表时间:
2006-03-21
影响因子:
11.1
作者:
Ohnishi, A;Hull, JJ;Matsumoto, S
通讯作者:
Matsumoto, S
影响因子:
11.4
作者:
Eugster, A;Frigerio, G;Duden, R
通讯作者:
Duden, R
影响因子:
9.8
作者:
Chen W;Foss M;Tseng KF;Zhang D
通讯作者:
Zhang D