{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T07:42:44Z","timestamp":1775634164785,"version":"3.50.1"},"reference-count":52,"publisher":"Portland Press Ltd.","issue":"2","license":[{"start":{"date-parts":[[2024,1,3]],"date-time":"2024-01-03T00:00:00Z","timestamp":1704240000000},"content-version":"vor","delay-in-days":2,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004819","name":"Cultural Affairs and Missions Sector, Ministry of Higher Education","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100004819","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["portlandpress.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,1,24]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In vitro studies have shown that Wharton\u2019s jelly mesenchymal stem cells (WJ-MSCs) can cross umbilical and uterine endothelial barriers and up-regulate endothelial junctional integrity from sub-endothelial niches. This pericytic behaviour may be lost in pregnancies complicated by gestational diabetes (GDM), where increased vascular permeability and junctional disruption are reported. The aim of the present study was to investigate whether WJ-MSCs isolated from GDM pregnancies displayed any changes in morphology, proliferation, VEGF-A secretion, and their ability to influence paracellular junctional composition and permeability. WJ-MSCs were isolated from human umbilical cords from normal pregnancies (nWJ-MSCs, n=13) and those complicated by GDM (gWJ-MSCs), either diet-controlled (d-GDM, n=13) or metformin-treated (m-GDM, n=9). We recorded that 4-fold more WJ-MSCs migrated from m-GDM, and 2.5-fold from d-GDM cord samples compared with the normal pregnancy. gWJ-MSCs showed a less predominance of spindle-shaped morphology and secreted 3.8-fold more VEGF-A compared with nWJ-MSCs. The number of cells expressing CD105 (Endoglin) was higher in gWJ-MSCs compared with nWJ-MSCs (17%) at P-2. The tracer leakage after 24 h across the HUVEC + gWJ-MSCs bilayer was 22.13% and 11.2% higher in the m-GDM and d-GDM, respectively, HUVEC + nWJ-MSCs. Transfection studies with siRNAs that target Endoglin were performed in n-WJ-MSCs; transfected cells were co-cultured with HUVEC followed by permeability studies and VE-cadherin analyses. Loss of Endoglin also led to increased VEGF-A secretion, increased permeability and affected endothelial stabilization. These results reinforce the pericytic role of nWJ-MSCs to promote vascular repair and the deficient ability of gWJ-MSCs to maintain endothelial barrier integrity.<\/jats:p>","DOI":"10.1042\/cs20230657","type":"journal-article","created":{"date-parts":[[2024,1,3]],"date-time":"2024-01-03T10:37:36Z","timestamp":1704278256000},"page":"87-102","update-policy":"https:\/\/doi.org\/10.1042\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Umbilical cord mesenchymal stem cells from gestational diabetes show impaired ability to up-regulate paracellular permeability from sub-endothelial niche"],"prefix":"10.1042","volume":"138","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5918-8253","authenticated-orcid":false,"given":"Samar","family":"Salem","sequence":"first","affiliation":[{"name":"School of Life Sciences, Division of Physiology, Pharmacology and Neuroscience, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, U.K."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lopa","family":"Leach","sequence":"additional","affiliation":[{"name":"School of Life Sciences, Division of Physiology, Pharmacology and Neuroscience, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, U.K."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"288","published-online":{"date-parts":[[2024,1,12]]},"reference":[{"key":"2024011210194472800_B1","doi-asserted-by":"publisher","first-page":"851","DOI":"10.1007\/s10456-014-9432-7","article-title":"Functional analysis reveals angiogenic potential of human mesenchymal stem cells from Wharton's jelly in dermal regeneration","volume":"17","author":"Edwards","year":"2014","journal-title":"Angiogenesis"},{"key":"2024011210194472800_B2","doi-asserted-by":"publisher","first-page":"1570","DOI":"10.1089\/scd.2014.0490","article-title":"Transplanted umbilical cord mesenchymal stem cells modify the in vivo microenvironment enhancing angiogenesis and leading to bone regeneration","volume":"24","author":"Todeschi","year":"2015","journal-title":"Stem Cells Dev."},{"key":"2024011210194472800_B3","doi-asserted-by":"publisher","first-page":"e54","DOI":"10.1038\/emm.2013.94","article-title":"Mesenchymal stem cells: environmentally responsive therapeutics for regenerative medicine","volume":"45","author":"Murphy","year":"2013","journal-title":"Exp. 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