文献类型: 外文期刊
作者: Li, Muwang;Li, Muwang;Zhang, Guozheng;Qin, Sheng;Qin, Sheng;Zhang, Shu;Hou, Chengxiang;Hou, Chengxiang;Sun, Xia;Sun, Xia;Zhang, Guozheng
作者机构:
关键词: microRNA; silk gland; RNA-sequencing; naked silkworm
期刊名称: JOURNAL OF ECONOMIC ENTOMOLOGY
ISSN: 0022-0493
年卷期: 2018 年 111 卷 6 期
页码:
摘要: The silk gland (SG) is characterized by the synthesis and secretion of silk protein in the economically important silkworm, Bombyx mori L. (Lepidoptera: Bombycidae). Nd and Nd-s are two fibroin-secretion-deficient silkworm mutants. MicroRNA (miRNA) plays an important role in many biological processes, such as cell proliferation, differentiation, and apoptosis. Using the Dazao silkworm as a control, we explored the miRNA expression profiles in the SGs of u02 (Nd) and u05 (Nd-s) to reveal the potential functions of miRNAs in silk protein expression and SG development. Here, we sequenced small RNA libraries made from the whole SGs of three strains. There are 260, 236, and 233 known miRNAs and 20, 18, and 18 potential new miRNAs identified from Dazao, u02, and u05, respectively. Fifty-three miRNAs are differentially expressed between Dazao and u02, 51 between Dazao and u05, and 16 between u02 and u05. Gene ontology/KEGG analyses show that most of the predicted target genes of differentially expressed miRNAs were assigned to functional categories involved in cell proliferation, organ development, and cellular compartment structures. The miRNA expression profile of naked silkworms will pave the way for the understanding of SG development and the regulation of silk protein expression.
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