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Analysis of IGF2 mRNA expression and its methylation status between cattle yaks and their parents

文献类型： 外文期刊

作者： Liu, Zhenshan 1 ; Li, Qifa 1 ; Zhang, Qingbo 1 ; Qu, Xuguang 1 ; Dong, Liyan 1 ; Yang-zom, Chamba 3 ; Xie, Zhuang 1 ; Liu 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Lab Anim Reprod Genet & Mol Evolut, Nanjing 210095, Peoples R China

2.Shandong Acad Agr Sci, Inst Anim Husb & Vet Med, Jinan 250100, Peoples R China

3.Tibet Univ, Coll Agr & Anim Husb, Linzhi 860000, Peoples R China

关键词： Cattle yak;Male sterility;IGF2 gene;mRNA expression;DNA methylation

期刊名称：PROGRESS IN NATURAL SCIENCE （ 影响因子：3.607； 五年影响因子：4.795 ）

ISSN： 1002-0071

年卷期： 2009 年 19 卷 9 期

页码：

收录情况： SCI

摘要： Cattle yaks are an F1 hybrid between cattle and yaks and exhibit significant hybrid vigor. However, cattle yaks are sterile males. To study the epigenetic aspects of this reproductive isolation, IGF2 mRNA expression in cattle yaks and their parents and the patterns of the IGF2 differentially methylated regions (DMR) were examined in blood and testes. The results showed that IGF2 expression in cattle yaks' testes was lower than in their parents (P < 0.01). The IGF2 DMR was highly methylated (above 90%) in blood and testes of cattle yaks, yaks and cattle, with the highest level in cattle yaks (P > 0.05). Our study showed that IGF2 plays an important role in bovine spermatogenesis and might be involved in cattle-yak male sterility. The methylation level of the IGF2 DMR was irrelevant to the lower expression of IGF2 in cattle yaks; other factors perhaps play roles in its expression. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.

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