Role of microRNAs in embryo implantation

Liang, Jingjie; Wang, Shaoyu; Wang, Zhengguang

doi:10.1186/s12958-017-0309-7

Cited by 146 publications

(120 citation statements)

References 101 publications

(123 reference statements)

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“…miRNAs have been demonstrated to be involved in embryo implantation through regulating target genes (24,25). miRNAs control the expression of target genes, and 60% of them are predicted to be regulators of protein-encoding genes in humans (26).…”

Section: Discussionmentioning

confidence: 99%

LRP6 is involved in the proliferation, migration and invasion of trophoblast cells via miR‑346

Zhang

et al. 2020

Int J Mol Med

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Low-density lipoprotein receptor-related protein 6 (LRP6) promotes metastasis in numerous types of cancer; however, its role in trophoblast cells has been less frequently reported. In the present study, the effects of up-and downregulation of LRP6 on trophoblast cells were investigated accordingly. The study aimed to develop a therapeutic target for gestational choriocarcinoma. The expression levels of LRP6 in pre-eclampsia (PE) tissues, trophoblast cell lines and gestational choriocarcinoma cells were determined using reverse transcription-quantitative polymerase chain reaction (RT-qPcR) assay. double-luciferase reporter analysis was conducted to detect the regulatory gene of LRP6. Furthermore, the proliferative, migratory and invasive abilities of trophoblasts and gestational choriocarcinoma cells were determined by ccK-8, wound healing, and Transwell assays, respectively. The expression levels of the genes and proteins of interest [matrix metalloproteinase (MMP)-2, MMP-9, tissue inhibitor of metalloproteinase-1 (TIMP-1), and TIMP-2] associated with tumor cell invasion were measured by performing RT-qPcR and western blotting, respectively. The National center for Biotechnology Information database revealed that LRP6 was relatively highly expressed in placental tissues, but was poorly expressed in PE tissues and trophoblast cell lines. The upregulation of LRP6 not only increased the activity, migration and invasion of trophoblast cells, but it also promoted the expression of MMP-2 and MMP-9, whereas it inhibited the expression levels of TIMP-1 and TIMP-2. Such results followed the opposite trend to those of downregulation of LRP6 in gestational choriocarcinoma cells. Moreover, LRP6 was predicted to be the target gene for microRNA (miR)-346, which was highly expressed in PE tissues and trophoblast cell lines. The present study also revealed that LRP6 could reverse the effects of miR-346 on the proliferation, migration and invasion of trophoblast cells. Therefore, considered collectively, the results of the present study have demonstrated that LRP6 is involved in the proliferation, migration and invasion of trophoblast cells via miR-346, and that LRP6 may serve as a potential target in cancer treatment.

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Section: Discussionmentioning

confidence: 99%

LRP6 is involved in the proliferation, migration and invasion of trophoblast cells via miR‑346

Zhang

et al. 2020

Int J Mol Med

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“…Despite numerous advancements in assisted reproductive technology (ART), the efficiency of pregnancy has not greatly improved. Assessments of embryo quality remain an important challenge in successful pregnancy outcomes …”

Section: Introductionmentioning

confidence: 99%

Expression of miR‐Let‐7a, miR‐15a, miR‐16‐1, and their target genes in fresh and vitrified embryos and its surrounding culture media for noninvasive embryo assessment

Heidari

Hosseini

Yeganeh

et al. 2019

J of Cellular Biochemistry

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microRNAs (miRNAs) play a critical role in implantation and development of mouse embryos. In this study, we aim to evaluate the possibility of miRNAs as potential biomarkers in the blastocyst culture to assess embryo quality. We also intend to investigate whether improved clinical outcomes of vitrified embryos agree with altered miRNA expressions. Mouse embryos from in vitro fertilization were vitrified at the two-cell stage. After thawing, the embryos were individually cultured and developed to the blastocyst stage. We used quantitative real-time polymerase chain reaction to evaluate miRNA expression levels in both vitrified and fresh groups, and culture medium (CM). The fibronectin binding assay was performed to examine for blastocyst attachment.The findings showed reduced expressions of miR-16-1 (0.2 ± 0.06) and miR-Let-7a (0.65 ± 0.1) after vitrification compared to fresh embryos. We observed significant upregulation of the target genes Vav3 (4.33 ± 0.25), integrin β-3 (Itg β3; 4.73 ± 0.2), and Bcl2 (2.29 ± 0.16) in the vitrified embryos compared to the fresh groups. Evaluation of blastocyst CM showed upregulation of miR-Let-7a (15.68 ± 0.89), miR-16-1 (16.18 ± 0.75), and miR-15a (13.36 ± 0.73) in the vitrified group in comparison to the fresh blastocysts (P < .05). The expression levels of miR-16-1 (3.28 ± 0.63), miR-15a (5.91 ± 0.38), and miR-Let-7a (9.07 ± 0.6) in CM of the vitrified blastocysts conducted on fibronectin were significantly higher than the fresh group (P < .05).This study showed that vitrification of embryos changes implantation and proliferation biomarkers. In addition, upregulated miRNAs in CM could be potentially used for noninvasive early assessment of embryo quality.

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“…It has been shown that, from the first trimester, small EVs, acting through their miRNAs, modulate communications between embryonic cells of the blastocyst and endometrial cells, promoting the receptivity of one and the adhesion of the other. In detail, it has been demonstrated that miRNA210 could be used as an index of a good implant, therefore possibly predicting an eventual receptivity failure [86].…”

Section: Receptivity Failurementioning

confidence: 99%

Extracellular Vesicles in Feto–Maternal Crosstalk and Pregnancy Disorders

Buca

Bologna

D’Amico

et al. 2020

IJMS

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Extracellular vesicles (EVs) actively participate in inter-cellular crosstalk and have progressively emerged as key players of organized communities of cells within multicellular organisms in health and disease. For these reasons, EVs are attracting the attention of many investigators across different biomedical fields. In this scenario, the possibility to study specific placental-derived EVs in the maternal peripheral blood may open novel perspectives in the development of new early biomarkers for major obstetric pathological conditions. Here we reviewed the involvement of EVs in feto–maternal crosstalk mechanisms, both in physiological and pathological conditions (preeclampsia, fetal growth restriction, preterm labor, gestational diabetes mellitus), also underlining the usefulness of EV characterization in maternal–fetal medicine.

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Role of microRNAs in embryo implantation

Cited by 146 publications

References 101 publications

LRP6 is involved in the proliferation, migration and invasion of trophoblast cells via miR‑346

LRP6 is involved in the proliferation, migration and invasion of trophoblast cells via miR‑346

Expression of miR‐Let‐7a, miR‐15a, miR‐16‐1, and their target genes in fresh and vitrified embryos and its surrounding culture media for noninvasive embryo assessment

Extracellular Vesicles in Feto–Maternal Crosstalk and Pregnancy Disorders

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