The expansion of the PRAME gene family in Eutheria.
The PRAME gene family belongs to the group of cancer/testis genes whose expression is restricted primarily to the testis and a variety of cancers. The expansion of this gene family as a result of gene duplication has been observed in primates and rodents. We analyzed the PRAME gene family in Eutheri...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3037382?pdf=render |
| _version_ | 1818305078087385088 |
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| author | Ti-Cheng Chang Yang Yang Hiroshi Yasue Arvind K Bharti Ernest F Retzel Wan-Sheng Liu |
| author_facet | Ti-Cheng Chang Yang Yang Hiroshi Yasue Arvind K Bharti Ernest F Retzel Wan-Sheng Liu |
| author_sort | Ti-Cheng Chang |
| collection | DOAJ |
| description | The PRAME gene family belongs to the group of cancer/testis genes whose expression is restricted primarily to the testis and a variety of cancers. The expansion of this gene family as a result of gene duplication has been observed in primates and rodents. We analyzed the PRAME gene family in Eutheria and discovered a novel Y-linked PRAME gene family in bovine, PRAMEY, which underwent amplification after a lineage-specific, autosome-to-Y transposition. Phylogenetic analyses revealed two major evolutionary clades. Clade I containing the amplified PRAMEYs and the unamplified autosomal homologs in cattle and other eutherians is under stronger functional constraints; whereas, Clade II containing the amplified autosomal PRAMEs is under positive selection. Deep-sequencing analysis indicated that eight of the identified 16 PRAMEY loci are active transcriptionally. Compared to the bovine autosomal PRAME that is expressed predominantly in testis, the PRAMEY gene family is expressed exclusively in testis and is up-regulated during testicular maturation. Furthermore, the sense RNA of PRAMEY is expressed specifically whereas the antisense RNA is expressed predominantly in spermatids. This study revealed that the expansion of the PRAME family occurred in both autosomes and sex chromosomes in a lineage-dependent manner. Differential selection forces have shaped the evolution and function of the PRAME family. The positive selection observed on the autosomal PRAMEs (Clade II) may result in their functional diversification in immunity and reproduction. Conversely, selective constraints have operated on the expanded PRAMEYs to preserve their essential function in spermatogenesis. |
| first_indexed | 2024-12-13T06:20:52Z |
| format | Article |
| id | doaj.art-7475be12ba99405d9e8edb656ce2d506 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T06:20:52Z |
| publishDate | 2011-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-7475be12ba99405d9e8edb656ce2d5062022-12-21T23:56:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-0162e1686710.1371/journal.pone.0016867The expansion of the PRAME gene family in Eutheria.Ti-Cheng ChangYang YangHiroshi YasueArvind K BhartiErnest F RetzelWan-Sheng LiuThe PRAME gene family belongs to the group of cancer/testis genes whose expression is restricted primarily to the testis and a variety of cancers. The expansion of this gene family as a result of gene duplication has been observed in primates and rodents. We analyzed the PRAME gene family in Eutheria and discovered a novel Y-linked PRAME gene family in bovine, PRAMEY, which underwent amplification after a lineage-specific, autosome-to-Y transposition. Phylogenetic analyses revealed two major evolutionary clades. Clade I containing the amplified PRAMEYs and the unamplified autosomal homologs in cattle and other eutherians is under stronger functional constraints; whereas, Clade II containing the amplified autosomal PRAMEs is under positive selection. Deep-sequencing analysis indicated that eight of the identified 16 PRAMEY loci are active transcriptionally. Compared to the bovine autosomal PRAME that is expressed predominantly in testis, the PRAMEY gene family is expressed exclusively in testis and is up-regulated during testicular maturation. Furthermore, the sense RNA of PRAMEY is expressed specifically whereas the antisense RNA is expressed predominantly in spermatids. This study revealed that the expansion of the PRAME family occurred in both autosomes and sex chromosomes in a lineage-dependent manner. Differential selection forces have shaped the evolution and function of the PRAME family. The positive selection observed on the autosomal PRAMEs (Clade II) may result in their functional diversification in immunity and reproduction. Conversely, selective constraints have operated on the expanded PRAMEYs to preserve their essential function in spermatogenesis.http://europepmc.org/articles/PMC3037382?pdf=render |
| spellingShingle | Ti-Cheng Chang Yang Yang Hiroshi Yasue Arvind K Bharti Ernest F Retzel Wan-Sheng Liu The expansion of the PRAME gene family in Eutheria. PLoS ONE |
| title | The expansion of the PRAME gene family in Eutheria. |
| title_full | The expansion of the PRAME gene family in Eutheria. |
| title_fullStr | The expansion of the PRAME gene family in Eutheria. |
| title_full_unstemmed | The expansion of the PRAME gene family in Eutheria. |
| title_short | The expansion of the PRAME gene family in Eutheria. |
| title_sort | expansion of the prame gene family in eutheria |
| url | http://europepmc.org/articles/PMC3037382?pdf=render |
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