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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 PLoS+Genet
2016 ; 12
(5
): e1005863
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UPF2-Dependent Nonsense-Mediated mRNA Decay Pathway Is Essential for
Spermatogenesis by Selectively Eliminating Longer 3 UTR Transcripts
#MMPMID27149259
Bao J
; Vitting-Seerup K
; Waage J
; Tang C
; Ge Y
; Porse BT
; Yan W
PLoS Genet
2016[May]; 12
(5
): e1005863
PMID27149259
show ga
During transcription, most eukaryotic genes generate multiple alternative
cleavage and polyadenylation (APA) sites, leading to the production of transcript
isoforms with variable lengths in the 3' untranslated region (3'UTR). In contrast
to somatic cells, male germ cells, especially pachytene spermatocytes and round
spermatids, express a distinct reservoir of mRNAs with shorter 3'UTRs that are
essential for spermatogenesis and male fertility. However, the mechanisms
underlying the enrichment of shorter 3'UTR transcripts in the developing male
germ cells remain unknown. Here, we report that UPF2-mediated nonsense-mediated
mRNA decay (NMD) plays an essential role in male germ cells by eliminating
ubiquitous genes-derived, longer 3'UTR transcripts, and that this role is
independent of its canonical role in degrading "premature termination codon"
(PTC)-containing transcripts in somatic cell lineages. This report provides
physiological evidence supporting a noncanonical role of the NMD pathway in
achieving global 3'UTR shortening in the male germ cells during spermatogenesis.