No severe and global X chromosome inactivation in meiotic male germline of Drosophila
No severe and global X chromosome inactivation in meiotic male germline of Drosophila
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DOI：
10.1186/1741-7007-10-50
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发表时间：
2012-06-12
期刊：
影响因子：
5.4
通讯作者：
Nurminsky DI
中科院分区：
文献类型：
--
作者：
Mikhaylova LM;Nurminsky DI
This article is a response to Vibranovski et al. See correspondence article http://www.biomedcentral.com/1741-7007/10/49 and the original research article http://www.biomedcentral.com/1741-7007/9/29 We have previously reported a high propensity of testis-expressed X-linked genes to activation in meiotic cells, a similarity in global gene expression between the X chromosome and autosomes in meiotic germline, and under-representation of various types of tissue-specific genes on the X chromosome. Based on our findings and a critical review of the current literature, we believe that there is no global and severe silencing of the X chromosome in the meiotic male germline of Drosophila. The term 'meiotic sex chromosome inactivation' (MSCI) therefore seems misleading when used to describe the minor underexpression of the X chromosome in the testis of Drosophila, because this term erroneously implies a profound and widespread silencing of the X-linked genes, by analogy to the well-studied MSCI system in mammals, and therefore distracts from identification and analysis of the real mechanisms that orchestrate gene expression and evolution in this species.
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