201
|
Zhao Z, Zhao Q, Warrick J, Lockwood CM, Woodworth A, Moley KH, Gronowski AM. Circulating microRNA miR-323-3p as a biomarker of ectopic pregnancy. Clin Chem 2012; 58:896-905. [PMID: 22395025 DOI: 10.1373/clinchem.2011.179283] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND The use of serum human chorionic gonadotropin (hCG) and progesterone to identify patients with ectopic pregnancy (EP) has been shown to have poor clinical utility. Pregnancy-associated circulating microRNAs (miRNAs) have been proposed as potential biomarkers for the diagnosis of pregnancy-associated complications. This proof-of-concept study examined the diagnostic accuracy of various miRNAs to detect EP in an emergency department (ED) setting. METHODS This study was a retrospective case-control analysis of 89 women who presented to the ED with vaginal bleeding and/or abdominal pain/cramping and received a diagnosis of viable intrauterine pregnancy (VIP), spontaneous abortion (SA), or EP. Serum hCG and progesterone concentrations were measured by immunoassays. The serum concentrations of miRNAs miR-323-3p, miR-517a, miR-519d, and miR-525-3p were measured with TaqMan real-time PCR. Statistical analysis was performed to determine the clinical utility of these biomarkers, both as single markers and as multimarker panels for EP. RESULTS Concentrations of serum hCG, progesterone, miR-517a, miR-519d, and miR-525-3p were significantly lower in EP and SA cases than in VIP cases (P < 0.01). In contrast, the concentration of miR-323-3p was significantly increased in EP cases, compared with SA and VIP cases (P < 0.01). As a single marker, miR-323-3p had the highest sensitivity of 37.0% (at a fixed specificity of 90%). In comparison, the combined panel of hCG, progesterone, and miR-323-3p yielded the highest sensitivity (77.8%, at a fixed specificity of 90%). A stepwise analysis that used hCG first, added progesterone, and then added miR-323-3p yielded a 96.3% sensitivity and a 72.6% specificity. CONCLUSIONS Pregnancy-associated miRNAs, especially miR-323-3p, added substantial diagnostic accuracy to a panel including hCG and progesterone for the diagnosis of EP.
Collapse
Affiliation(s)
- Zhen Zhao
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | | | | | | | | | | |
Collapse
|
202
|
Hromadnikova I. Extracellular nucleic acids in maternal circulation as potential biomarkers for placental insufficiency. DNA Cell Biol 2012; 31:1221-32. [PMID: 22364204 DOI: 10.1089/dna.2011.1530] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Since the placenta is being continuously remodeled during normal placental development, extracellular nucleic acids of both fetal and placental origin, packed into either trophoblast-derived apoptotic bodies or shedding syncytiotrophoblast microparticles, may be detected in maternal circulation during the course of normal gestation. Placental-insufficiency-related pregnancy complications have been shown to be associated with excessive placental trophoblast apoptosis and shedding of placenta debris. Recent advances in the field are reviewed with a focus on the diagnostic potential of particular molecular biomarkers and their eventual implementation in the currently used predictive and diagnostic algorithms for placental-insufficiency-related pregnancy complications.
Collapse
Affiliation(s)
- Ilona Hromadnikova
- Department of Molecular Biology and Cell Pathology, Third Faculty of Medicine, Charles University in Prague, Prague 10, Czech Republic.
| |
Collapse
|
203
|
Sundrani DP, Chavan-Gautam PM, Pisal HR, Mehendale SS, Joshi SR. Matrix metalloproteinase-1 and -9 in human placenta during spontaneous vaginal delivery and caesarean sectioning in preterm pregnancy. PLoS One 2012; 7:e29855. [PMID: 22253805 PMCID: PMC3257231 DOI: 10.1371/journal.pone.0029855] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 12/05/2011] [Indexed: 11/18/2022] Open
Abstract
Preterm birth is a major public health problem in terms of loss of life, long-term and short term disabilities worldwide. The process of parturition (both term and preterm) involves intensive remodelling of the extracellular matrix (ECM) in the placenta and fetal membranes by matrix metalloproteinases (MMPs). Our previous studies show reduced docosahexaenoic acid (DHA) in women delivering preterm. Further omega 3 fatty acids are reported to regulate MMP levels. This study was undertaken to examine the placental levels of MMPs and their association with placental DHA levels in women delivering preterm. The levels of MMP-1 and MMP-9 in 74 women delivering preterm (52 by spontaneous vaginal delivery and 22 by caesarean sectioning) and 75 women delivering at term (59 by spontaneous vaginal delivery and 16 by caesarean sectioning) were determined by enzyme-linked immunosorbent assay (ELISA) and their association with placental DHA was studied. Placental MMP-1 levels were higher (p<0.05) in women delivering preterm (both by spontaneous vaginal delivery and caesarean sectioning) as compared to those delivering at term. In contrast, placental MMP-9 levels in preterm pregnancies was higher (p<0.05) in women with spontaneous vaginal delivery while lower (p<0.05) in women delivering by caesarean sectioning. Low placental DHA was associated with higher placental MMP-9 levels. Our study suggests a differential effect of mode of delivery on the levels of MMPs from placenta. Further this study suggests a negative association of DHA and the levels of MMP-9 in human placenta although the mechanisms need further study.
Collapse
Affiliation(s)
- Deepali P. Sundrani
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Preeti M. Chavan-Gautam
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Hemlata R. Pisal
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Savita S. Mehendale
- Department of Obstetrics and Gynecology, Bharati Medical College and Hospital, Bharati Vidyapeeth University, Pune, India
| | - Sadhana R. Joshi
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
- * E-mail:
| |
Collapse
|
204
|
Robson JE, Eaton SA, Underhill P, Williams D, Peters J. MicroRNAs 296 and 298 are imprinted and part of the GNAS/Gnas cluster and miR-296 targets IKBKE and Tmed9. RNA (NEW YORK, N.Y.) 2012; 18:135-144. [PMID: 22114321 PMCID: PMC3261735 DOI: 10.1261/rna.029561.111] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 09/13/2011] [Indexed: 05/31/2023]
Abstract
Genomic imprinting is the phenomenon whereby a subset of genes is differentially expressed according to parental origin. Imprinted genes tend to occur in clusters, and microRNAs are associated with the majority of well-defined clusters of imprinted genes. We show here that two microRNAs, miR-296 and miR-298, are part of the imprinted Gnas/GNAS clusters in both mice and humans. Both microRNAs show imprinted expression and are expressed from the paternally derived allele, but not the maternal allele. They arise from a long, noncoding antisense transcript, Nespas, with a promoter more than 27 kb away. Nespas had been shown previously to act in cis to regulate imprinted gene expression within the Gnas cluster. Using microarrays and luciferase assays, IKBKE, involved in many signaling pathways, and Tmed9, a protein transporter, were verified as new targets of miR-296. Thus, Nespas has two clear functions: as a cis-acting regulator within an imprinted gene cluster and as a precursor of microRNAs that modulate gene expression in trans. Furthermore, imprinted microRNAs, including miR-296 and miR-298, impose a parental specific modulation of gene expression of their target genes.
Collapse
Affiliation(s)
- Joan E. Robson
- Mammalian Genetics Unit, MRC Harwell, Harwell Science and Innovation Centre, Oxfordshire, OX11 0RD, United Kingdom
| | - Sally A. Eaton
- Mammalian Genetics Unit, MRC Harwell, Harwell Science and Innovation Centre, Oxfordshire, OX11 0RD, United Kingdom
| | - Peter Underhill
- Mammalian Genetics Unit, MRC Harwell, Harwell Science and Innovation Centre, Oxfordshire, OX11 0RD, United Kingdom
| | - Debbie Williams
- Mammalian Genetics Unit, MRC Harwell, Harwell Science and Innovation Centre, Oxfordshire, OX11 0RD, United Kingdom
| | - Jo Peters
- Mammalian Genetics Unit, MRC Harwell, Harwell Science and Innovation Centre, Oxfordshire, OX11 0RD, United Kingdom
| |
Collapse
|
205
|
Wu L, Zhou H, Lin H, Qi J, Zhu C, Gao Z, Wang H. Circulating microRNAs are elevated in plasma from severe preeclamptic pregnancies. Reproduction 2011; 143:389-97. [PMID: 22187671 DOI: 10.1530/rep-11-0304] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Until recently, the molecular pathogenesis of preeclampsia (PE) remained largely unknown. Reports have shown that circulating microRNAs (miRNAs) are promising novel biomarkers for cancer, pregnancy, tissue injury, and other conditions. The objective of this study was to identify differentially expressed miRNAs in plasma from severe preeclamptic pregnancies compared with plasma from normal pregnancies. By mature miRNA microarray analysis, 15 miRNAs, including 13 up- and two downregulated miRNAs, were screened to be differentially expressed in plasma from women with severe PE (sPE). Seven miRNAs, namely miR-24, miR-26a, miR-103, miR-130b, miR-181a, miR-342-3p, and miR-574-5p, were validated to be elevated in plasma from severe preeclamptic pregnancies by real-time quantitative stem-loop RT-PCR analysis. Gene ontology and pathway enrichment analyses revealed that these miRNAs were involved in specific biological process categories (including regulation of metabolic processes, regulation of transcription, and cell cycle) and signaling pathways (including the MAP kinase signaling pathway, the transforming growth factor-β signaling pathway, and pathways in cancer metastasis). This study presents, for the first time, the differential expression profile of circulating miRNAs in sPE patients. The seven elevated circulating miRNAs may play critical roles in the pathogenesis of sPE, and one or more of them may become potential markers for diagnosing sPE.
Collapse
Affiliation(s)
- Liang Wu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
206
|
Li H, Guo L, Wu Q, Lu J, Ge Q, Lu Z. A comprehensive survey of maternal plasma miRNAs expression profiles using high-throughput sequencing. Clin Chim Acta 2011; 413:568-76. [PMID: 22155343 DOI: 10.1016/j.cca.2011.11.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/22/2011] [Accepted: 11/23/2011] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Recently, microRNAs (miRNAs) had been shown as potential important regulators in pregnancy. Circulating miRNAs are considered as potentially useful non-invasive biomarkers for the diagnosis of pregnancy-related disease and congenital disorders, but maternal peripheral blood miRNAs expression profile in pregnancy remains less investigated. We thus set out to investigate maternal plasma miRNAs expression profile using genome-wide sequencing. METHODS Maternal plasma miRNA expression profiles of different pregnancy stages were detected by SOLiD sequencing. We observed the expression level of the most abundant miRNAs in maternal plasma during pregnancy process. We examined functional relationships of targets of pregnancy-relative miRNAs by enrichment analyzing of signaling pathways. RESULTS 147 miRNAs were sequenced from maternal plasma in this study, among them, 90 types of miRNAs were found in all of the samples, while 136 miRNAs in the first trimester gestation, 108 in second trimester gestation, and 99 miRNAs in the third trimester gestation, respectively. The varieties and the expression level of maternal plasma miRNAs were changing during pregnancy. The expression level of miRNA cluster members was changing with the same trend during pregnancy. The function and functional relationship analysis of target genes of pregnancy-relative miRNAs showed that genetic disorder, immunological disease, cell signaling, cancer, and cell cycle were the enriched pathways. CONCLUSIONS Maternal plasma miRNA expression profiles are dynamically changing during pregnancy. The results of function analysis suggested that miRNAs may play an important role in regulating pregnancy process, which can help us understand the refine regulation mechanism in pregnancy. Moreover, the results of this present study may be the basis for a further study to find useful prenatal diagnosis biomarkers.
Collapse
Affiliation(s)
- Hailing Li
- State Key Laboratory of Bioelectronics, Southeast University Nanjing, China.
| | | | | | | | | | | |
Collapse
|
207
|
Ladomery MR, Maddocks DG, Wilson ID. MicroRNAs: their discovery, biogenesis, function and potential use as biomarkers in non-invasive prenatal diagnostics. INTERNATIONAL JOURNAL OF MOLECULAR EPIDEMIOLOGY AND GENETICS 2011; 2:253-260. [PMID: 21915364 PMCID: PMC3166153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 07/29/2011] [Indexed: 05/31/2023]
Abstract
MiRNAs are a widespread class of small non-coding RNAs that have the ability to silence gene expression through sequence complementarity to their targets. We describe their initial discovery in the nematode C.elegans and review what is currently known about their biogenesis. The regulation of expression and processing of miRNAs, and the mechanisms through which miRNAs locate their correct targets are not yet fully understood. MiRNAs are involved in a multitude of developmental and pathological processes leading to an explosion of research in disparate subject areas. In this review we draw attention to placentally expressed miRNAs that can be detected in the maternal plasma; and we discuss their potential use as biomarkers in non-invasive prenatal diagnostics.
Collapse
Affiliation(s)
- Michael R Ladomery
- Centre for Research in Bioscience, Faculty of Health and Life Sciences, University of the West of England, Coldhar-bour Lane Bristol BS16 1QY, UK
| | | | | |
Collapse
|
208
|
Hawkins SM, Buchold GM, Matzuk MM. Minireview: The roles of small RNA pathways in reproductive medicine. Mol Endocrinol 2011; 25:1257-79. [PMID: 21546411 DOI: 10.1210/me.2011-0099] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The discovery of small noncoding RNA, including P-element-induced wimpy testis-interacting RNA, small interfering RNA, and microRNA, has energized research in reproductive medicine. In the two decades since the identification of small RNA, first in Caenorhabditis elegans and then in other animals, scientists in many disciplines have made significant progress in elucidating their biology. A powerful battery of tools, including knockout mice and small RNA mimics and antagonists, has facilitated investigation into the functional roles and therapeutic potential of these small RNA pathways. Current data indicate that small RNA play significant roles in normal development and physiology and pathological conditions of the reproductive tracts of females and males. Biologically plausible mRNA targets for these microRNA are aggressively being discovered. The next phase of research will focus on elucidating the clinical utility of small RNA-selective agonists and antagonists.
Collapse
Affiliation(s)
- Shannon M Hawkins
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas 77030, USA.
| | | | | |
Collapse
|