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KMID : 1033620110380020061
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Clinical and Experimental Reproductive Medicine
2011 Volume.38 No. 2 p.61 ~ p.67
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Functions of PIWI proteins in spermatogenesis
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Bak Chong-Won
Yoon Tae-Ki
Choi Young-Sok
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Abstract
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Recently, a significant understanding of the molecular mechanisms regulating spermatogenesis has been achieved utilizing small RNA molecules (small RNAs), including small interfering RNAs (siRNAs), microRNAs (miRNAs), and Piwi-interacting RNAs (piRNAs) which emerged as important regulators of gene expression at the post-transcriptional or translation level. piRNAs are only present in pachytene spermatocytes and round spermatids, whereas miRNAs are expressed abundantly in male germ cells throughout spermatogenesis. This review is aimed at providing a glimpse of piRNAs and their interacting family proteins such as PIWIL1, PIWIL2, and PIWIL4 in spermatogenesis.
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KEYWORD
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PIWI Protein, piRNAs, Spermatogenesis, Infertility, Mice, Human
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