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Cell Mol Life Sci
2019 Jun 01;7611:2185-2198. doi: 10.1007/s00018-019-03036-1.
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Alternative polyadenylation coordinates embryonic development, sexual dimorphism and longitudinal growth in Xenopus tropicalis.
Zhou X
,
Zhang Y
,
Michal JJ
,
Qu L
,
Zhang S
,
Wildung MR
,
Du W
,
Pouchnik DJ
,
Zhao H
,
Xia Y
,
Shi H
,
Ji G
,
Davis JF
,
Smith GD
,
Griswold MD
,
Harland RM
.
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RNA alternative polyadenylation contributes to the complexity of information transfer from genome to phenome, thus amplifying gene function. Here, we report the first X. tropicalis resource with 127,914 alternative polyadenylation (APA) sites derived from embryos and adults. Overall, APA networks play central roles in coordinating the maternal-zygotic transition (MZT) in embryos, sexual dimorphism in adults and longitudinal growth from embryos to adults. APA sites coordinate reprogramming in embryos before the MZT, but developmental events after the MZT due to zygotic genome activation. The APA transcriptomes of young adults are more variable than growing adults and male frog APA transcriptomes are more divergent than females. The APA profiles of young females were similar to embryos before the MZT. Enriched pathways in developing embryos were distinct across the MZT and noticeably segregated from adults. Briefly, our results suggest that the minimal functional units in genomes are alternative transcripts as opposed to genes.
R21 HD076845 National Institute of Child Health and Human Development, 2016-67015-24470 National Institute of Food and Agriculture, 61573296 National Natural Science Foundation of China, 61673323 National Natural Science Foundation of China, R21 HD076845 NICHD NIH HHS
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