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2017 ; 8
(16
): 26573-26590
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Systematic identification and comparison of expressed profiles of lncRNAs and
circRNAs with associated co-expression and ceRNA networks in mouse germline stem
cells
#MMPMID28404936
Li X
; Ao J
; Wu J
Oncotarget
2017[Apr]; 8
(16
): 26573-26590
PMID28404936
show ga
Accumulating evidence indicates that long noncoding RNAs (lncRNAs) and circular
RNAs (circRNAs) involve in germ cell development. However, little is known about
the functions and mechanisms of lncRNAs and circRNAs in self-renewal and
differentiation of germline stem cells. Therefore, we explored the expression
profiles of mRNAs, lncRNAs, and circRNAs in male and female mouse germline stem
cells by high-throughput sequencing. We identified 18573 novel lncRNAs and 18822
circRNAs in the germline stem cells and further confirmed the existence of these
lncRNAs and circRNAs by RT-PCR. The results showed that male and female germline
stem cells had similar GDNF signaling mechanism. Subsequently, 8115 mRNAs, 3996
lncRNAs, and 921 circRNAs exhibited sex-biased expression that may be associated
with germline stem cell acquisition of the sex-specific properties required for
differentiation into gametes. Gene Ontology (GO) and KEGG pathway enrichment
analyses revealed different functions for these sex-biased lncRNAs and circRNAs.
We further constructed correlated expression networks including coding-noncoding
co-expression and competing endogenous RNAs with bioinformatics. Co-expression
analysis showed hundreds of lncRNAs were correlated with sex differences in mouse
germline stem cells, including lncRNA Gm11851, lncRNA Gm12840, lncRNA
4930405O22Rik, and lncRNA Atp10d. CeRNA network inferred that lncRNA Meg3 and
cirRNA Igf1r could bind competitively with miRNA-15a-5p increasing target gene
Inha, Acsl3, Kif21b, and Igfbp2 expressions. These findings provide novel
perspectives on lncRNAs and circRNAs and lay a foundation for future research
into the regulating mechanisms of lncRNAs and circRNAs in germline stem cells.