Comparative iTRAQ proteomics revealed proteins associated with horn development in yak

文献类型： 外文期刊

第一作者： Li, Mingna

作者： Li, Mingna;Wu, Xiaoyun;Guo, Xian;Bao, Pengjia;Ding, Xuezhi;Chu, Min;Liang, Chunnian;Yan, Ping

作者机构：

关键词： Horn bud; iTRAQ; Proteomics; Yak (Bos grunniens)

期刊名称：PROTEOME SCIENCE （ 影响因子：2.48； 五年影响因子：2.619 ）

ISSN： 1477-5956

年卷期： 2018 年 16 卷

页码：

收录情况： SCI

摘要： Background: The practice of dehorning yak raises animal safety concerns, which have been addressed by selective breeding to obtain genetically hornless yak. The POLLED locus in yak has been studied extensively; however, little is known regarding the proteins that regulate horn bud development. Methods: A differential proteomic analysis was performed to compare the skin from the horn bud region of polled yak fetuses and the horn bud tissue of horned yak fetuses using isobaric tags for relative and absolute quantitation (iTRAQ) technology coupled with 2D LC-MS/MS. Results: One hundred differentially abundant proteins (DAPs) were identified. Of these, 29 were up-regulated and 71 were down-regulated in skin from the horn bud region of polled fetuses when compared to the horn bud tissue of horned fetuses. Bioinformatics analyses showed that the up-regulated DAPs were mainly associated with metabolic activities, while the down-regulated DAPs were significantly enriched in cell adhesion and cell movement activities. Conclusions: We concluded that some important proteins were associated with cell adhesion, cell motility, keratinocyte differentiation, cytoskeleton organization, osteoblast differentiation, and fatty acid metabolism during horn bud development. These results advance our understanding of the molecular mechanisms underlying horn development.

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