Abstract
Sheep are valuable resources for the wool industry. Wool growth of Aohan fine wool sheep has cycled during different seasons in 1 year. Therefore, identifying genes that control wool growth cycling might lead to ways for improving the quality and yield of fine wool. In this study, we employed Agilent sheep gene expression microarray and proteomic technology to compare the gene expression patterns of the body side skins at August and December time points in Aohan fine wool sheep (a Chinese indigenous breed). Microarray study revealed that 2,223 transcripts were differentially expressed, including 1,162 up-regulated and 1,061 down-regulated transcripts, comparing body side skin at the August time point to the December one (A/D) in Aohan fine wool sheep. Then seven differentially expressed genes were selected to validated the reliability of the gene chip data. The majority of the genes possibly related to follicle development and wool growth could be assigned into the categories including regulation of receptor binding, extracellular region, protein binding and extracellular space. Proteomic study revealed that 84 protein spots showed significant differences in expression levels. Of the 84, 63 protein spots were upregulated and 21 were downregulated in A/D. Finally, 55 protein points were determined through MALDI-TOF/MS analyses. Furthermore, the regulation mechanism of hair follicle might resemble that of fetation.
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Acknowledgments
We are very grateful to Prof. Yinlin Ge for technical assistance. This research was supported by the Project of National Hair Sheep Industry Technology System (CARS-40) and the Project of Qingdao People’s Livelihood Science and Technology (13-1-3-88-nsh).
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Nan Liu and Hegang Li contributed equally to this paper.
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Liu, N., Li, H., Liu, K. et al. Differential expression of genes and proteins associated with wool follicle cycling. Mol Biol Rep 41, 5343–5349 (2014). https://doi.org/10.1007/s11033-014-3405-1
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DOI: https://doi.org/10.1007/s11033-014-3405-1