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2018 ; 10
(ä): 48
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Competing endogenous RNA expression profiling in pre-eclampsia identifies
hsa_circ_0036877 as a potential novel blood biomarker for early pre-eclampsia
#MMPMID29643944
Hu X
; Ao J
; Li X
; Zhang H
; Wu J
; Cheng W
Clin Epigenetics
2018[]; 10
(ä): 48
PMID29643944
show ga
BACKGROUND: The etiology and pathogenesis of pre-eclampsia (PE) is unclear, and
there is no ideal early clinical biomarker for prediction of PE. The competing
endogenous RNA (ceRNA) hypothesis is a new approach to uncover the molecular
pathology of PE. The first aim of this study was to perform messenger RNA, long
non-coding RNA, and circular RNA (circRNA) expression profiling of human normal
and severe pre-eclampsia (SPE) placentas. circRNA, which has a stable structure,
is a more suitable biomarker than other types of RNA. Therefore, the second aim
of our study was to select some differentially expressed circRNAs in PE placentas
as early clinical biomarkers of PE in blood circulation. RESULTS: Using
microarray analysis, we investigated differentially expressed ceRNAs in human
normal and SPE placentas. Bioinformatics, such as gene ontology, KEGG pathway,
and ceRNA network analyses, were performed to evaluate the microarray data and
gain further insights into the biological processes. RNAs (Chd5, Furin,
lnc-ELAVL4-9:1, lnc-RAP1GAP2-5:2, hsa_circ_0036877, hsa_circ_0036878,
hsa_circ_0055724, hsa_circ_0049730, and hsa_circ_0036474) were validated by
quantitative real-time PCR (qRT-PCR). RNA immunoprecipitation (RIP) of AGO2 in
htra-8 cells and qRT-PCR analysis of hsa_circ_0036877 expression in maternal
whole peripheral blood samples of participants were then conducted to confirm
that hsa_circ_0036877 is a ceRNA and potential novel blood biomarker for early
PE, respectively. CONCLUSION: Our study is the first systematic profiling of
ceRNAs in placentas of PE patients and revealed the global ceRNA network
integration in PE. Moreover, hsa_circ_0036877 can function as a ceRNA and serve
as a potential novel blood biomarker for early PE.