{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T07:21:00Z","timestamp":1792653660148,"version":"4.5.0"},"reference-count":36,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T00:00:00Z","timestamp":1684368000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Bioeng. Biotechnol."],"abstract":"<jats:p><jats:bold>Introduction:<\/jats:bold> Functional disorder of the placenta is the principal cause of fetal growth restriction (FGR), usually cured with suitable clinical treatment and good nursing. However, some FGR mothers still give birth to small for gestational age (SGA) babies after treatment. The ineffectiveness of treatment in such a group of patients confused physicians of obstetrics and gynecology.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> In this study, we performed a microRNA-messenger RNA integrative analysis of gene expression profiles obtained from Gene Expression Omnibus. Differentially expressed genes were screened and checked using quantitative polymerase chain reaction. Target genes of significantly changed microRNA were screened and enriched for Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses. Function of the obtained microRNA-messenger RNA was evaluated using HTR-8\/SVneo trophoblast cells, human umbilical vein endothelial cells, and heterozygote male mice.<\/jats:p><jats:p><jats:bold>Result:<\/jats:bold> MiR-155-5p was upregulated (<jats:italic>p<\/jats:italic> = 0.001, fold-change = 2.275) in fetal-side placentals. Among the hub genes identified as key targets for miR-155-5p in fetal reprogramming, Smad2 was downregulated (<jats:italic>p<\/jats:italic> = 0.002, fold change = 0.426) and negatively correlated with miR-155-5p expression levels (r = \u22120.471, <jats:italic>p<\/jats:italic> &amp;lt; 1.0 E \u2013 04) in fetal-side placental tissues. The miR-155-5p mimic blocks Smad2 expression and suppresses villous trophoblast cell and endothelial cell function (proliferation, migration, and invasion), indicating a close relationship with placental development. Luciferase assays further confirmed the targeting of miR-155-5p to Smad2. Furthermore, Smad2<jats:sup>+\/\u2212<\/jats:sup> heterozygote male mice were born small with low body weight (<jats:italic>p<\/jats:italic> = 0.0281) and fat composition (<jats:italic>p<\/jats:italic> = 0.013) in the fourth week post-natal.<\/jats:p><jats:p><jats:bold>Discussion:<\/jats:bold> We provide the first evidence of the role of the Smad2\/miR-155-5p axis in the placental pathologies of FGR. Our findings elucidate the pathogenesis of FGR and provide new therapeutic targets.<\/jats:p>","DOI":"10.3389\/fbioe.2023.1159805","type":"journal-article","created":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T07:59:02Z","timestamp":1684396742000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":10,"title":["An miRNA-mRNA integrative analysis in human placentas and mice: role of the Smad2\/miR-155-5p axis in the development of fetal growth restriction"],"prefix":"10.3389","volume":"11","author":[{"given":"Jia-Xing","family":"Wu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Shi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bao-Ming","family":"Gong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bao-Wei","family":"Ji","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Chen","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gui-Cheng","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Lei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Tang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling V.","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Hui","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xue","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2023,5,18]]},"reference":[{"key":"B1","doi-asserted-by":"crossref","first-page":"496","DOI":"10.1093\/humrep\/14.2.496","article-title":"Are human placental bed giant cells merely aggregates of small mononuclear trophoblast cells? 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