Journal
ADVANCED SCIENCE
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/advs.202307505
Keywords
embryo development; lncRNA; short-interspersed elements; transcriptional regulation; ZGA
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This study identifies a novel retrotransposon-associated long noncoding RNA (lncRNA), SAWPA, in porcine early embryos. SAWPA is essential for porcine embryonic development by regulating the JNK-MAPK signaling pathway.
In mice, retrotransposon-associated long noncoding RNAs (lncRNA) play important regulatory roles in pre-implantation development; however, it is largely unknown whether they function in the pre-implantation development in pigs. The current study aims to screen for retrotransposon-associated lncRNA in porcine early embryos and identifies a porcine 8-cell embryo-specific SINE-associated nuclear long noncoding RNA named SAWPA. SAWPA is essential for porcine embryonic development as depletion of SAWPA results in a developmental arrest at the 8-cell stage, accompanied by the inhibition of the JNK-MAPK signaling pathway. Mechanistically, SAWPA works in trans as a transcription factor for JNK through the formation of an RNA-protein complex with HNRNPA1 and MED8 binding the SINE elements upstream of JNK. Therefore, as the first functional SINE-associated long noncoding RNAs in pigs, SAWPA provides novel insights for the mechanism research on retrotransposons in mammalian pre-implantation development.
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