Identification of a pou2 ortholog in Chinese sturgeon, Acipenser sinensis and its expression patterns in tissues, immature individuals and during embryogenesis.
Identifieur interne : 000303 ( PubMed/Curation ); précédent : 000302; suivant : 000304Identification of a pou2 ortholog in Chinese sturgeon, Acipenser sinensis and its expression patterns in tissues, immature individuals and during embryogenesis.
Auteurs : Huan Ye [République populaire de Chine] ; Hao Du ; Xi-Hua Chen ; Hong Cao ; Tao Liu ; Chuang-Ju LiSource :
- Fish physiology and biochemistry [ 1573-5168 ] ; 2012.
English descriptors
- KwdEn :
- Amino Acid Sequence, Animals, Base Sequence, Cloning, Molecular, Embryo, Nonmammalian (metabolism), Embryonic Development, Female, Fish Proteins (genetics), Fish Proteins (metabolism), Fishes (embryology), Fishes (physiology), Gene Expression, Larva (growth & development), Larva (metabolism), Male, Molecular Sequence Data, Ovary (metabolism), Phylogeny, Protein Structure, Secondary, RNA, Messenger (metabolism), Transcription Factors (genetics), Transcription Factors (metabolism).
- MESH :
- chemical , genetics : Fish Proteins, Transcription Factors.
- embryology : Fishes.
- growth & development : Larva.
- metabolism : Embryo, Nonmammalian, Fish Proteins, Larva, Ovary, RNA, Messenger, Transcription Factors.
- physiology : Fishes.
- Amino Acid Sequence, Animals, Base Sequence, Cloning, Molecular, Embryonic Development, Female, Gene Expression, Male, Molecular Sequence Data, Phylogeny, Protein Structure, Secondary.
Abstract
The class V POU family genes, including pou5f1 and pou2, encode transcription factors critical for the maintenance of pluripotency in embryonic stem cells (ESC) and germ line cells in vertebrates. In the present study, the full-length cDNA of a pou2 ortholog in A. sinensis, Aspou2, was cloned and sequenced. This cDNA sequence is 2,853 base pairs in length and encodes a peptide of 431 amino acid residues. A comparison of the deduced amino acid sequence of Aspou2 with that of other vertebrate species showed that they were highly conserved in the POU domain, which shared 88 and 90% identity with that of zebrafish and medaka, respectively, and was 69, 67 and 67% identical to frog, mouse and human, respectively. RT-PCR analysis revealed that Aspou2 was detected in all tissues examined except for the liver, and high mRNA levels of Aspou2 were found in the muscle, pituitary and brain. During the embryogenesis and early larval development, the expression level of Aspou2 mRNAs decreased gradually apart from 1-day larvae that were not observed. Furthermore, Aspou2 seemed to raise with the development of gonads of immature Chinese sturgeons. These results suggested the possible involvement of Aspou2 in the nonpluripotent cells, pluripotent cells, embryogenesis, and gonad development.
DOI: 10.1007/s10695-011-9579-8
PubMed: 22127527
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A comparison of the deduced amino acid sequence of Aspou2 with that of other vertebrate species showed that they were highly conserved in the POU domain, which shared 88 and 90% identity with that of zebrafish and medaka, respectively, and was 69, 67 and 67% identical to frog, mouse and human, respectively. RT-PCR analysis revealed that Aspou2 was detected in all tissues examined except for the liver, and high mRNA levels of Aspou2 were found in the muscle, pituitary and brain. During the embryogenesis and early larval development, the expression level of Aspou2 mRNAs decreased gradually apart from 1-day larvae that were not observed. Furthermore, Aspou2 seemed to raise with the development of gonads of immature Chinese sturgeons. 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