MicroRNAs 363 and 149 are differentially expressed in the maternal circulation preceding a diagnosis of preeclampsia

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Whigham, C-A; MacDonald, TM; Walker, SP; Hiscock, R; Hannan, NJ; Pritchard, N; Cannon, P; Tuong, VN; Miranda, M; Tong, S; ...Date
2020-10-22Source Title
Scientific ReportsPublisher
NATURE RESEARCHUniversity of Melbourne Author/s
Lino, Tu'uhevaha; Walker, Susan; Tong, Stephen; Cannon, Ping; Nguyen, Tuong-Vi; Whigham, Carole-Anne; MacDonald, Teresa; Hannan, Natalie; Hiscock, Richard; Pritchard, NatashaAffiliation
Obstetrics and GynaecologyMetadata
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Whigham, C. -A., MacDonald, T. M., Walker, S. P., Hiscock, R., Hannan, N. J., Pritchard, N., Cannon, P., Tuong, V. N., Miranda, M., Tong, S. & Kaitu'u-Lino, T. J. (2020). MicroRNAs 363 and 149 are differentially expressed in the maternal circulation preceding a diagnosis of preeclampsia. SCIENTIFIC REPORTS, 10 (1), https://doi.org/10.1038/s41598-020-73783-w.Access Status
Open AccessOpen Access at PMC
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7583242Abstract
Preeclampsia is a pregnancy complication associated with angiogenic dysbalance, maternal endothelial dysfunction and end-organ injury. A predictive test to identify those who will develop preeclampsia could substantially decrease morbidity and mortality. MicroRNAs (miRs) are small RNA molecules involved in post-transcriptional gene regulation. We screened for circulating miRs differentially expressed at 36 weeks' gestation in pregnancies before the development of preeclampsia. We used a case-control group (198 controls, 34 pre-preeclampsia diagnosis) selected from a prospective cohort (n = 2015) and performed a PCR-based microarray to measure the expression of 41 miRs. We found six circulating miRs (miRs 363, 149, 18a, 1283, 16, 424) at 36 weeks' had significantly reduced expression (p < 0.0001-0.04). miR363 was significantly downregulated at 28 weeks' gestation, 10-12 weeks before the onset of clinical disease. In the circulation of another cohort of 34 participants with established preterm preeclampsia (vs 23 controls), we found miRs363, 18a, 149 and 16 were significantly down regulated (p < 0.0001-0.04). Combined expression of miRs149 and 363 in the circulation at 36 weeks' gestation provides a test with 45% sensitivity (at a specificity of 90%) which suggests measuring both miRs may have promise as part of a multi-marker test to predict preeclampsia.
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