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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2015 ; 6
(ä): 8207
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Novel PRD-like homeodomain transcription factors and retrotransposon elements in
early human development
#MMPMID26360614
Töhönen V
; Katayama S
; Vesterlund L
; Jouhilahti EM
; Sheikhi M
; Madissoon E
; Filippini-Cattaneo G
; Jaconi M
; Johnsson A
; Bürglin TR
; Linnarsson S
; Hovatta O
; Kere J
Nat Commun
2015[Sep]; 6
(ä): 8207
PMID26360614
show ga
Transcriptional program that drives human preimplantation development is largely
unknown. Here, by using single-cell RNA sequencing of 348 oocytes, zygotes and
single blastomeres from 2- to 3-day-old embryos, we provide a detailed analysis
of the human preimplantation transcriptome. By quantifying transcript far 5'-ends
(TFEs), we include in our analysis transcripts that derive from alternative
promoters. We show that 32 and 129 genes are transcribed during the transition
from oocyte to four-cell stage and from four- to eight-cell stage, respectively.
A number of identified transcripts originates from previously unannotated genes
that include the PRD-like homeobox genes ARGFX, CPHX1, CPHX2, DPRX, DUXA, DUXB
and LEUTX. Employing de novo promoter motif extraction on sequences surrounding
TFEs, we identify significantly enriched gene regulatory motifs that often
overlap with Alu elements. Our high-resolution analysis of the human
transcriptome during preimplantation development may have important implications
on future studies of human pluripotent stem cells and cell reprograming.