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The Widespread Impact of Mammalian MicroRNAs on mRNA Repression and Evolution.

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Title: The Widespread Impact of Mammalian MicroRNAs on mRNA Repression and Evolution.
Authors: Farh, Kyle Kai-How, Crimson, Andrew, Jan, Calvin, Lewis, Benjamin P., Johnston, Wendy K., Lim, Lee P., Burge, Christopher B., Bartel, David P.
Source: Science (pre-March 2025). 12/16/2005, Vol. 310 Issue 5755, p1817-1821. 5p. 4 Graphs.
Subjects: Messenger RNA, Biological evolution, Nucleotides, Genes, Tissues, Surgery
Abstract: Thousands of mammalian messenger RNAs are under selective pressure to maintain 7-nucleotide sites matching microRNAs (miRNAs). We found that these conserved targets are often highly expressed at developmental stages before miRNA expression and that their levels tend to fall as the miRNA that targets them begins to accumulate. Nonconserved sites, which outnumber the conserved sites 10 to 1, also mediate repression. As a consequence, genes preferentially expressed at the same time and place as a miRNA have evolved to selectively avoid sites matching the miRNA. This phenomenon of selective avoidance extends to thousands of genes and enables spatial and temporal specificities of miRNAs to be revealed by finding tissues and developmental stages in which messages with corresponding sites are expressed at lower levels. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: The Widespread Impact of Mammalian MicroRNAs on mRNA Repression and Evolution.
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  Data: <searchLink fieldCode="AR" term="%22Farh%2C+Kyle+Kai-How%22">Farh, Kyle Kai-How</searchLink><br /><searchLink fieldCode="AR" term="%22Crimson%2C+Andrew%22">Crimson, Andrew</searchLink><br /><searchLink fieldCode="AR" term="%22Jan%2C+Calvin%22">Jan, Calvin</searchLink><br /><searchLink fieldCode="AR" term="%22Lewis%2C+Benjamin+P%2E%22">Lewis, Benjamin P.</searchLink><br /><searchLink fieldCode="AR" term="%22Johnston%2C+Wendy+K%2E%22">Johnston, Wendy K.</searchLink><br /><searchLink fieldCode="AR" term="%22Lim%2C+Lee+P%2E%22">Lim, Lee P.</searchLink><br /><searchLink fieldCode="AR" term="%22Burge%2C+Christopher+B%2E%22">Burge, Christopher B.</searchLink><br /><searchLink fieldCode="AR" term="%22Bartel%2C+David+P%2E%22">Bartel, David P.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 12/16/2005, Vol. 310 Issue 5755, p1817-1821. 5p. 4 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Messenger+RNA%22">Messenger RNA</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+evolution%22">Biological evolution</searchLink><br /><searchLink fieldCode="DE" term="%22Nucleotides%22">Nucleotides</searchLink><br /><searchLink fieldCode="DE" term="%22Genes%22">Genes</searchLink><br /><searchLink fieldCode="DE" term="%22Tissues%22">Tissues</searchLink><br /><searchLink fieldCode="DE" term="%22Surgery%22">Surgery</searchLink>
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  Data: Thousands of mammalian messenger RNAs are under selective pressure to maintain 7-nucleotide sites matching microRNAs (miRNAs). We found that these conserved targets are often highly expressed at developmental stages before miRNA expression and that their levels tend to fall as the miRNA that targets them begins to accumulate. Nonconserved sites, which outnumber the conserved sites 10 to 1, also mediate repression. As a consequence, genes preferentially expressed at the same time and place as a miRNA have evolved to selectively avoid sites matching the miRNA. This phenomenon of selective avoidance extends to thousands of genes and enables spatial and temporal specificities of miRNAs to be revealed by finding tissues and developmental stages in which messages with corresponding sites are expressed at lower levels. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=19303916
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        Value: 10.1126/science.1121158
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        Text: English
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      – SubjectFull: Nucleotides
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              Text: 12/16/2005
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              Y: 2005
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