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However, the number of endogenous ECs is inadequate for both experimental purposes and clinical applications. Porcine ovarian putative stem cells (poPSCs), although not pluripotent, are characterized by great plasticity. Therefore, this study aimed to investigate whether poPSCs have the potential to differentiate into cells of endothelial lineage. poPSCs were immunomagnetically isolated from postnatal pig ovaries based on the presence of SSEA-4 protein. Expression of mesenchymal stem cells (MSCs) markers after pre-culture, both at the level of mRNA: <jats:italic>ITGB1, THY,<\/jats:italic> and <jats:italic>ENG<\/jats:italic> and corresponding protein: CD29, CD90, and CD105 were significantly higher compared to the control ovarian cortex cells. To differentiate poPSCs into ECs, inducing medium containing vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), insulin-like growth factor (IGF), epidermal growth factor (EGF), ascorbic acid, and heparin was applied. After 14\u00a0days, poPSC differentiation into ECs was confirmed by immunofluorescence staining for vascular endothelial cadherin (VECad) and vascular endothelial growth factor receptor-2 (VEGFR-2). Semi-quantitative WB analysis of these proteins confirmed their high abundance. Additionally, qRT-PCR showed that mRNA expression of corresponding marker genes: <jats:italic>CDH5, KDR<\/jats:italic> was significantly higher compared with undifferentiated poPSCs. Finally, EC functional status was confirmed by the migration test that revealed that they were capable of positive chemotaxis, while tube formation assay demonstrated their ability to develop capillary networks. In conclusion, our results provided evidence that poPSCs may constitute the MSC population in the ovary and confirmed that they might be a potential source of ECs for tissue engineering.<\/jats:p>","DOI":"10.1007\/s00418-021-02016-6","type":"journal-article","created":{"date-parts":[[2021,7,16]],"date-time":"2021-07-16T15:03:01Z","timestamp":1626447781000},"page":"349-362","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Porcine ovarian cortex-derived putative stem cells can differentiate into endothelial cells in vitro"],"prefix":"10.1007","volume":"156","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4120-067X","authenticated-orcid":false,"given":"Kamil","family":"Wartalski","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4609-7461","authenticated-orcid":false,"given":"Gabriela","family":"Gorczyca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0911-3696","authenticated-orcid":false,"given":"Jerzy","family":"Wiater","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7715-6554","authenticated-orcid":false,"given":"Zbigniew","family":"Tabarowski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0100-7979","authenticated-orcid":false,"given":"Ma\u0142gorzata","family":"Duda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,7,16]]},"reference":[{"key":"2016_CR1","doi-asserted-by":"publisher","first-page":"41","DOI":"10.1038\/nrn1824","volume":"7","author":"NJ Abbott","year":"2006","unstructured":"Abbott NJ, R\u00f6nnb\u00e4ck L, Hansson E (2006) Astrocyte-endothelial interactions at the blood-brain barrier. 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