Profiling Sex-Specific piRNAs in Zebrafish
Profiling Sex-Specific piRNAs in Zebrafish
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斑马鱼性别特异性 piRNA 分析
DOI:
10.1534/genetics.110.122234
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发表时间:
2010-12
期刊:
影响因子:
3.3
通讯作者:
中科院分区:
文献类型:
--
作者:
Piwi proteins and their partner small RNAs play an essential role in fertility, germ-line stem cell development, and the basic control and evolution of animal genomes. However, little knowledge exists regarding piRNA biogenesis. Utilizing microfluidic chip analysis, we present a quantitative profile of zebrafish piRNAs expressed differentially between testis and ovary. The sex-specific piRNAs are derived from separate loci of repeat elements in the genome. Ovarian piRNAs can be categorized into groups that reach up to 92 members, indicating a sex-specific arrangement of piRNA genes in the genome. Furthermore, precursor piRNAs preferentially form a hairpin structure at the 3′end, which seem to favor the generation of mature sex-specific piRNAs. In addition, the mature piRNAs from both the testis and the ovary are 2′-O-methylated at their 3′ ends.
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DOI:
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发表时间:
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期刊:
Molecular and General Genetics MGG
影响因子:
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通讯作者:
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发表时间:
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影响因子:
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通讯作者:
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