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Insufficient invasion of trophoblasts is correlated with the development of preeclampsia (PE). MicroRNA (miR)‑491‑5p has been reported to be implicated in human cancer cell invasion; however, whether miR‑491‑5p is involved in the development of PE remains largely unclear. The aim of the present study was to investigate the role of miR‑491‑5p in trophoblastic invasion in vitro and to determine its underlying mechanism of action. The expression levels of miR‑491‑5p were validated using reverse transcription‑quantitative PCR. The effects of miR‑491‑5p on trophoblast cell invasion were evaluated in vitro. Then, the association between miR‑491‑5p and its downstream target was investigated in both cell lines and clinical specimens. miR‑491‑5p expression levels were observed to be significantly increased in the placental tissues from patients with PE. The invasive capacity of HTR‑8/SVneo trophoblast cells was suppressed following the upregulation of miR‑491‑5p and increased following the inhibition of miR‑491‑5p. Matrix metalloproteinase‑9 (MMP‑9), a well‑known regulator of trophoblast cell invasion, was discovered to be a direct target of miR‑491‑5p in HTR‑8/SVneo trophoblast cells. Moreover, miR‑491‑5p expression levels were found to be inversely correlated with MMP‑9 expression levels in placental tissues from patients with PE. The overexpression of MMP‑9 partly attenuated the inhibitory effects of miR‑491‑5p on HTR‑8/SVneo trophoblast cells invasion. Collectively, these findings suggested that the aberrant expression of miR‑491‑5p may contribute to PE through suppressing trophoblast invasion, thus highlighting the novel roles of miR‑491‑5p in the molecular pathogenesis of PE. The present study also showed that the miR‑491‑5p/MMP‑9 axis may be an effective biomarker or a viable drug target for therapeutic intervention in PE.
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http://dx.doi.org/10.3892/mmr.2020.11604 | DOI Listing |
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Taizhou University, Taizhou, China.
This study aimed to investigate the influence of metaphoric language intervention (MLI) on students' psychological perception in bilingual learning, focusing on both autistic and students with non-autism. Students with autism often exhibit apprehension toward engaging in bilingual learning with their peers, resulting in reduced enjoyment and unfavorable language learning outcomes. A cohort of 108 students with autism and 102 students with non-autism, who demonstrated psychological perception engagement through MLI, was recruited for the study.
View Article and Find Full Text PDFMol Cell Biochem
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Dysregulated expression of microtubule-associated protein tau (MAPT) has been reported in a variety of human cancers. However, whether and how Tau influences hepatocellular carcinogenesis remains elusive. This study was aimed to investigate the role and the underlying mechanism of Tau in the proliferation, invasion, migration and sorafenib sensitivity of hepatocellular carcinoma (HCC) cells.
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